Thermophysical Properties of Refrigerents

30.1
CHAPTER 30
THERMOPHYSICAL PROPERTIES OF REFRIGERANTS
HIS chapter presents data for thermodynamic and transport
Tproperties of refrigerants, arranged for the occasional user. The
refrigerants have a thermodynamic property chart on pressure-
enthalpy coordinates with an abbreviated set of tabular data for sat-
urated liquid and vapor on the facing page. In addition, tabular data
in the superheated vapor region are given for R-134a to assist stu-
dents working on compression cycle examples.
For each cryogenic fluid, a second table of properties is pro-
vided for vapor at a pressure of one standard atmosphere; these data
are needed when such gases are used in heat transfer or purge gas
applications. For zeotropic blends, including R-729 (air), tables are
incremented in pressure, with properties given for liquid on the
bubble line and vapor on the dew line. This arrangement is used
because pressure is more commonly measured in the field while
servicing equipment; it also highlights the difference between bub-
ble and dew-point temperatures (the “temperature glide” experi-
enced with blends).
Most CFC refrigerants have been deleted. Tables for R-11, R-13,
R-113, R-114, R-141b, R-142b, R-500, R-502, R-503, and R-720
(neon) may be found in the 1997 ASHRAE Handbook—Fundamen-
tals. R-12 has been retained to assist in making comparisons. Re-
vised formulations have been used for many refrigerants; these
conform to international standards, where applicable. Thermody-
namic properties of R-12, R-22, R-32, R-123, R-125, R-134a,
R-143a, R-152a, R-717 (ammonia), and R-744 (carbon dioxide) and
refrigerant blends R-404A, R-407C, R-410A, and R-507 conform to
ISO/DIS Draft Standard 17584, Refrigerant Properties.
Reference states used for most refrigerants correspond to the inter-
national convention of 200 kJ/kg for enthalpy and 1 kJ/(kg·K) for
entropy, both for saturated liquid at 0°C. Exceptions are water and
fluids with very low critical temperatures (e.g., ethylene, cryogens).
These data are intended to help engineers make preliminary
comparisons among unfamiliar fluids. For greater detail and a
wider range of data, see the sources in the References.
Refrigerant Page Refrigerant Page
Halocarbon Refrigerants R-718 (water/steam) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.36
Methane Series R-744 (carbon dioxide) . . . . . . . . . . . . . . . . . . . . . . . . . . 30.38
R-12 (dichlorodifluoromethane). . . . . . . . . . . . . . . . . . . 30.2
R-22 (chlorodifluoromethane) . . . . . . . . . . . . . . . . . . . . 30.4 Hydrocarbon Refrigerants
R-23 (trifluoromethane) . . . . . . . . . . . . . . . . . . . . . . . . . 30.6 R-50 (methane) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.40
R-32 (difluoromethane) . . . . . . . . . . . . . . . . . . . . . . . . . 30.8 R-170 (ethane). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.42
Ethane Series R-290 (propane) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.44
R-123 (2,2-dichloro-1,1,1-trifluoroethane) . . . . . . . . . . 30.10 R-600 (n-butane) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.46
R-124 (2-chloro-1,1,1,2-tetrafluoroethane) . . . . . . . . . . 30.12 R-600a (isobutane) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.48
R-125 (pentafluoroethane) . . . . . . . . . . . . . . . . . . . . . . . 30.14 R-1150 (ethylene) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.50
R-134a (1,1,1,2-tetrafluoroethane). . . . . . . . . . . . . . . . . 30.16 R-1270 (propylene) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.52
R-143a (1,1,1-trifluoroethane) . . . . . . . . . . . . . . . . . . . . 30.20
R-152a (1,1-difluoroethane). . . . . . . . . . . . . . . . . . . . . . 30.22 Cryogenic Fluids
Propane Series R-702 (normal hydrogen) . . . . . . . . . . . . . . . . . . . . . . . . 30.54
R-245fa (1,1,1,3,3-pentafluoropropane). . . . . . . . . . . . . 30.24 R-702p (parahydrogen) . . . . . . . . . . . . . . . . . . . . . . . . . . 30.56
Zeotropic Blends (% by mass) R-704 (helium) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.58
R-404A [R-125/143a/134a (44/52/4)] . . . . . . . . . . . . . . 30.26 R-728 (nitrogen) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.60
R-407C [R-32/125/134a (23/25/52)] . . . . . . . . . . . . . . . 30.28 R-729 (air). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.62
R-410A [R-32/125 (50/50)] . . . . . . . . . . . . . . . . . . . . . . 30.30 R-732 (oxygen) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.64
Azeotropic Blends R-740 (argon) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.66
R-507A [R-125/143a (50/50)] . . . . . . . . . . . . . . . . . . . . 30.32
Absorption Solutions
Inorganic Refrigerants Ammonia/Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.68
R-717 (ammonia) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.34 Water/Lithium Bromide . . . . . . . . . . . . . . . . . . . . . . . . . 30.70
The preparation of this chapter is assigned to TC 3.1, Refrigerants and Secondary Coolants.
Related Commercial Resources
Licensedforsingleuser.©2009ASHRAE,Inc.
Copyright © 2009, ASHRAE

30.2 2009 ASHRAE Handbook—Fundamentals (SI)
Fig.1Pressure-EnthalpyDiagramforRefrigerant12
Pressure

Thermophysical Properties of Refrigerants 30.3
Refrigerant 12 (Dichlorodifluoromethane) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat
cp, kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
°CLiquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor
–100 0.00119 1679.1 10.0040 113.32 306.09 0.6077 1.7210 0.819 0.449 1.182 1035 118.5 1005.0 6.78 116.7 4.27 26.48 –100
–90 0.00286 1652.8 4.3948 121.53 310.59 0.6538 1.6861 0.824 0.465 1.176 990 121.4 819.0 7.18 112.0 4.67 24.90 –90
–80 0.00619 1626.3 2.1355 129.81 315.19 0.6978 1.6576 0.831 0.481 1.172 945 124.1 684.9 7.58 107.4 5.08 23.35 –80
–70 0.01228 1599.5 1.1286 138.17 319.87 0.7400 1.6344 0.840 0.497 1.168 902 126.7 584.0 7.97 103.0 5.50 21.81 –70
–60 0.02261 1572.3 0.63992 146.62 324.61 0.7806 1.6156 0.850 0.513 1.166 859 129.1 505.1 8.37 98.8 5.93 20.30 –60
–50 0.03911 1544.7 0.38494 155.18 329.39 0.8197 1.6004 0.861 0.530 1.165 816 131.2 441.8 8.76 94.7 6.38 18.81 –50
–40 0.06409 1516.5 0.24342 163.86 334.18 0.8577 1.5882 0.873 0.548 1.166 775 133.0 389.8 9.16 90.7 6.84 17.35 –40
–30 0.10026 1487.7 0.16057 172.67 338.94 0.8946 1.5784 0.886 0.566 1.169 733 134.5 346.2 9.55 86.9 7.32 15.91 –30
–29.75b 0.10133 1487.0 0.15900 172.89 339.06 0.8955 1.5782 0.887 0.567 1.169 732 134.5 345.2 9.56 86.8 7.33 15.88 –29.75
–28 0.10910 1481.9 0.14841 174.44 339.89 0.9019 1.5767 0.889 0.570 1.170 725 134.7 338.3 9.63 86.1 7.41 15.63 –28
–26 0.11854 1476.0 0.13736 176.23 340.83 0.9091 1.5751 0.892 0.574 1.171 717 135.0 330.6 9.71 85.3 7.51 15.35 –26
–24 0.12860 1470.1 0.12731 178.02 341.78 0.9163 1.5735 0.895 0.578 1.171 709 135.2 323.2 9.79 84.6 7.61 15.06 –24
–22 0.13931 1464.1 0.11815 179.81 342.72 0.9234 1.5720 0.898 0.582 1.172 701 135.4 316.0 9.87 83.8 7.71 14.78 –22
–20 0.15070 1458.1 0.10978 181.62 343.65 0.9305 1.5706 0.901 0.586 1.174 693 135.6 309.0 9.95 83.1 7.80 14.50 –20
–18 0.16279 1452.1 0.10213 183.42 344.59 0.9376 1.5693 0.904 0.590 1.175 684 135.8 302.2 10.03 82.4 7.90 14.23 –18
–16 0.17562 1446.1 0.09512 185.24 345.52 0.9447 1.5680 0.907 0.594 1.176 676 136.0 295.6 10.10 81.6 8.01 13.95 –16
–14 0.18920 1440.0 0.08870 187.06 346.44 0.9517 1.5667 0.910 0.598 1.178 668 136.1 289.2 10.18 80.9 8.11 13.67 –14
–12 0.20358 1433.8 0.08280 188.89 347.37 0.9587 1.5655 0.913 0.602 1.179 660 136.3 283.0 10.26 80.2 8.21 13.40 –12
–10 0.21878 1427.6 0.07737 190.72 348.29 0.9656 1.5644 0.917 0.607 1.181 652 136.4 276.9 10.34 79.4 8.31 13.12 –10
–8 0.23483 1421.4 0.07237 192.56 349.20 0.9726 1.5633 0.920 0.611 1.183 644 136.5 271.0 10.42 78.7 8.41 12.85 –8
–6 0.25176 1415.1 0.06777 194.41 350.11 0.9795 1.5623 0.923 0.616 1.184 636 136.6 265.2 10.50 78.0 8.52 12.58 –6
–4 0.26960 1408.8 0.06352 196.27 351.01 0.9863 1.5613 0.927 0.620 1.186 628 136.6 259.6 10.58 77.3 8.62 12.31 –4
–2 0.28839 1402.5 0.05959 198.13 351.91 0.9932 1.5603 0.930 0.625 1.189 620 136.7 254.1 10.66 76.6 8.73 12.04 –2
0 0.30815 1396.1 0.05595 200.00 352.81 1.0000 1.5594 0.934 0.630 1.191 612 136.7 248.7 10.74 75.9 8.84 11.77 0
2 0.32891 1389.6 0.05258 201.88 353.69 1.0068 1.5586 0.938 0.635 1.193 604 136.7 243.5 10.82 75.1 8.95 11.51 2
4 0.35071 1383.1 0.04946 203.76 354.57 1.0136 1.5577 0.942 0.640 1.196 596 136.7 238.4 10.90 74.4 9.06 11.24 4
6 0.37358 1376.5 0.04656 205.65 355.45 1.0203 1.5569 0.946 0.645 1.199 588 136.7 233.4 10.98 73.7 9.17 10.98 6
8 0.39756 1369.9 0.04386 207.56 356.32 1.0270 1.5561 0.950 0.650 1.202 580 136.6 228.6 11.07 73.0 9.28 10.71 8
10 0.42267 1363.2 0.04135 209.46 357.18 1.0337 1.5554 0.954 0.656 1.205 572 136.5 223.8 11.15 72.3 9.39 10.45 10
12 0.44895 1356.5 0.03901 211.38 358.03 1.0404 1.5547 0.958 0.661 1.208 564 136.5 219.1 11.23 71.6 9.51 10.19 12
14 0.47643 1349.7 0.03683 213.31 358.88 1.0471 1.5540 0.962 0.667 1.211 556 136.3 214.6 11.31 70.9 9.62 9.94 14
16 0.50514 1342.8 0.03480 215.24 359.71 1.0537 1.5533 0.967 0.672 1.215 548 136.2 210.1 11.40 70.2 9.74 9.68 16
18 0.53513 1335.9 0.03290 217.18 360.54 1.0603 1.5527 0.971 0.678 1.219 540 136.1 205.7 11.48 69.6 9.86 9.42 18
20 0.56642 1328.9 0.03112 219.14 361.36 1.0669 1.5521 0.976 0.685 1.223 532 135.9 201.4 11.57 68.9 9.98 9.17 20
22 0.59905 1321.8 0.02946 221.10 362.17 1.0735 1.5515 0.981 0.691 1.228 524 135.7 197.2 11.65 68.2 10.10 8.92 22
24 0.63305 1314.6 0.02790 223.07 362.97 1.0801 1.5509 0.986 0.697 1.232 516 135.5 193.1 11.74 67.5 10.23 8.67 24
26 0.66846 1307.4 0.02643 225.05 363.76 1.0866 1.5503 0.991 0.704 1.237 508 135.2 189.0 11.83 66.8 10.36 8.42 26
28 0.70531 1300.1 0.02506 227.04 364.54 1.0932 1.5498 0.997 0.711 1.242 499 134.9 185.0 11.92 66.1 10.49 8.17 28
30 0.74365 1292.7 0.02377 229.04 365.31 1.0997 1.5492 1.002 0.718 1.248 491 134.7 181.1 12.01 65.4 10.62 7.92 30
32 0.78350 1285.2 0.02256 231.06 366.07 1.1062 1.5487 1.008 0.726 1.254 483 134.3 177.3 12.10 64.8 10.75 7.68 32
34 0.82491 1277.6 0.02142 233.08 366.81 1.1127 1.5481 1.014 0.734 1.260 475 134.0 173.5 12.19 64.1 10.89 7.43 34
36 0.86791 1269.9 0.02034 235.12 367.54 1.1192 1.5476 1.020 0.742 1.267 467 133.6 169.8 12.28 63.4 11.03 7.19 36
38 0.91253 1262.2 0.01933 237.16 368.26 1.1257 1.5470 1.026 0.750 1.274 459 133.2 166.1 12.38 62.7 11.18 6.95 38
40 0.95882 1254.3 0.01838 239.22 368.96 1.1322 1.5465 1.033 0.759 1.282 450 132.8 162.5 12.48 62.1 11.33 6.72 40
42 1.00680 1246.3 0.01748 241.29 369.65 1.1387 1.5459 1.040 0.768 1.290 442 132.4 159.0 12.57 61.4 11.48 6.48 42
44 1.05660 1238.1 0.01662 243.38 370.33 1.1451 1.5454 1.048 0.778 1.299 434 131.9 155.5 12.67 60.7 11.63 6.25 44
46 1.10810 1229.9 0.01582 245.47 370.98 1.1516 1.5448 1.055 0.788 1.308 426 131.4 152.0 12.78 60.0 11.79 6.01 46
48 1.16140 1221.5 0.01505 247.59 371.62 1.1580 1.5443 1.063 0.798 1.318 417 130.9 148.6 12.88 59.4 11.96 5.78 48
50 1.21660 1213.0 0.01433 249.71 372.24 1.1645 1.5437 1.072 0.810 1.329 409 130.3 145.3 12.99 58.7 12.13 5.55 50
52 1.27370 1204.4 0.01365 251.85 372.85 1.1710 1.5431 1.081 0.821 1.340 400 129.7 141.9 13.10 58.0 12.31 5.33 52
54 1.33270 1195.6 0.01300 254.01 373.43 1.1774 1.5425 1.090 0.834 1.353 392 129.1 138.7 13.21 57.3 12.49 5.10 54
56 1.39380 1186.6 0.01238 256.18 373.99 1.1839 1.5418 1.100 0.847 1.366 383 128.4 135.4 13.33 56.7 12.68 4.88 56
58 1.45680 1177.5 0.01180 258.38 374.53 1.1904 1.5411 1.111 0.861 1.381 375 127.7 132.2 13.45 56.0 12.87 4.66 58
60 1.52190 1168.1 0.01124 260.58 375.05 1.1969 1.5404 1.122 0.876 1.397 366 127.0 129.1 13.57 55.3 13.08 4.44 60
62 1.58920 1158.6 0.01071 262.81 375.54 1.2033 1.5397 1.135 0.892 1.414 357 126.3 125.9 13.70 54.7 13.29 4.23 62
64 1.65860 1148.9 0.01021 265.06 376.00 1.2099 1.5389 1.148 0.910 1.433 348 125.5 122.8 13.83 54.0 13.51 4.01 64
66 1.73020 1139.0 0.00973 267.33 376.44 1.2164 1.5381 1.162 0.929 1.453 339 124.6 119.7 13.96 53.3 13.75 3.80 66
68 1.80410 1128.8 0.00927 269.62 376.84 1.2229 1.5372 1.177 0.949 1.476 330 123.8 116.7 14.11 52.6 13.99 3.59 68
70 1.88020 1118.3 0.00883 271.94 377.22 1.2295 1.5363 1.193 0.971 1.501 321 122.9 113.6 14.26 52.0 14.25 3.39 70
75 2.08110 1090.9 0.00782 277.84 377.99 1.2461 1.5337 1.241 1.037 1.576 298 120.4 106.1 14.66 50.3 14.96 2.88 75
80 2.29750 1061.4 0.00691 283.94 378.48 1.2629 1.5306 1.302 1.122 1.677 274 117.7 98.6 15.11 48.7 15.80 2.40 80
85 2.53040 1029.1 0.00608 290.27 378.64 1.2801 1.5268 1.384 1.239 1.817 249 114.7 91.1 15.65 47.2 16.82 1.93 85
90 2.78080 993.2 0.00533 296.91 378.35 1.2978 1.5220 1.501 1.410 2.026 224 111.4 83.4 16.29 45.9 18.11 1.49 90
95 3.05010 952.2 0.00463 303.95 377.45 1.3163 1.5159 1.679 1.683 2.362 197 107.8 75.6 17.11 45.1 19.81 1.07 95
100 3.33990 903.8 0.00396 311.58 375.60 1.3360 1.5076 1.996 2.192 2.990 169 103.7 67.3 18.20 45.7 22.27 0.69 100
105 3.65250 842.2 0.00330 320.24 372.08 1.3581 1.4952 2.754 3.458 4.544 139 99.3 58.1 19.87 51.7 26.34 0.35 105
110 3.99240 742.7 0.00252 331.82 363.95 1.3874 1.4712 7.81 11.440 14.140 105 94.0 46.3 23.46 113.7 39.46 0.07 110
111.97c 4.13610 565.0 0.00177 347.76 347.76 1.4283 1.4283 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 111.97
*Temperatures on ITS-90 scale bNormal boiling point cCritical point

Pressure

Refrigerant 22 (Chlorodifluoromethane) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–100 0.00201 1571.3 8.26600 90.71 358.97 0.5050 2.0543 1.061 0.497 1.243 1127 143.6 845.8 7.25 143.1 4.46 28.12 –100
–90 0.00481 1544.9 3.64480 101.32 363.85 0.5646 1.9980 1.061 0.512 1.237 1080 147.0 699.4 7.67 137.8 4.84 26.36 –90
–80 0.01037 1518.2 1.77820 111.94 368.77 0.6210 1.9508 1.062 0.528 1.233 1033 150.3 591.0 8.09 132.6 5.25 24.63 –80
–70 0.02047 1491.2 0.94342 122.58 373.70 0.6747 1.9108 1.065 0.545 1.231 986 153.3 507.6 8.52 127.6 5.68 22.92 –70
–60 0.03750 1463.7 0.53680 133.27 378.59 0.7260 1.8770 1.071 0.564 1.230 940 156.0 441.4 8.94 122.6 6.12 21.24 –60
–50 0.06453 1435.6 0.32385 144.03 383.42 0.7752 1.8480 1.079 0.585 1.232 893 158.3 387.5 9.36 117.8 6.59 19.58 –50
–48 0.07145 1429.9 0.29453 146.19 384.37 0.7849 1.8428 1.081 0.589 1.233 884 158.7 377.8 9.45 116.9 6.69 19.25 –48
–46 0.07894 1424.2 0.26837 148.36 385.32 0.7944 1.8376 1.083 0.594 1.234 875 159.1 368.6 9.53 115.9 6.79 18.92 –46
–44 0.08705 1418.4 0.24498 150.53 386.26 0.8039 1.8327 1.086 0.599 1.235 865 159.5 359.6 9.62 115.0 6.89 18.59 –44
–42 0.09580 1412.6 0.22402 152.70 387.20 0.8134 1.8278 1.088 0.603 1.236 856 159.9 351.0 9.70 114.0 6.99 18.27 –42
–40.81b 0.10132 1409.2 0.21260 154.00 387.75 0.8189 1.8250 1.090 0.606 1.236 851 160.1 346.0 9.75 113.5 7.05 18.08 –40.81
–40 0.10523 1406.8 0.20521 154.89 388.13 0.8227 1.8231 1.091 0.608 1.237 847 160.3 342.6 9.79 113.1 7.09 17.94 –40
–38 0.11538 1401.0 0.18829 157.07 389.06 0.8320 1.8186 1.093 0.613 1.238 838 160.6 334.5 9.87 112.2 7.19 17.62 –38
–36 0.12628 1395.1 0.17304 159.27 389.97 0.8413 1.8141 1.096 0.619 1.239 828 160.9 326.7 9.96 111.2 7.29 17.30 –36
–34 0.13797 1389.1 0.15927 161.47 390.89 0.8505 1.8098 1.099 0.624 1.241 819 161.2 319.1 10.04 110.3 7.40 16.98 –34
–32 0.15050 1383.2 0.14682 163.67 391.79 0.8596 1.8056 1.102 0.629 1.242 810 161.5 311.7 10.12 109.4 7.51 16.66 –32
–30 0.16389 1377.2 0.13553 165.88 392.69 0.8687 1.8015 1.105 0.635 1.244 800 161.8 304.6 10.21 108.5 7.61 16.34 –30
–28 0.17819 1371.1 0.12528 168.10 393.58 0.8778 1.7975 1.108 0.641 1.246 791 162.0 297.7 10.29 107.5 7.72 16.02 –28
–26 0.19344 1365.0 0.11597 170.33 394.47 0.8868 1.7937 1.112 0.646 1.248 782 162.3 291.0 10.38 106.6 7.83 15.70 –26
–24 0.20968 1358.9 0.10749 172.56 395.34 0.8957 1.7899 1.115 0.653 1.250 772 162.5 284.4 10.46 105.7 7.94 15.39 –24
–22 0.22696 1352.7 0.09975 174.80 396.21 0.9046 1.7862 1.119 0.659 1.253 763 162.7 278.1 10.55 104.8 8.06 15.07 –22
–20 0.24531 1346.5 0.09268 177.04 397.06 0.9135 1.7826 1.123 0.665 1.255 754 162.8 271.9 10.63 103.9 8.17 14.76 –20
–18 0.26479 1340.3 0.08621 179.30 397.91 0.9223 1.7791 1.127 0.672 1.258 744 163.0 265.9 10.72 103.0 8.29 14.45 –18
–16 0.28543 1334.0 0.08029 181.56 398.75 0.9311 1.7757 1.131 0.678 1.261 735 163.1 260.1 10.80 102.1 8.40 14.14 –16
–14 0.30728 1327.6 0.07485 183.83 399.57 0.9398 1.7723 1.135 0.685 1.264 726 163.2 254.4 10.89 101.1 8.52 13.83 –14
–12 0.33038 1321.2 0.06986 186.11 400.39 0.9485 1.7690 1.139 0.692 1.267 716 163.3 248.8 10.98 100.2 8.65 13.52 –12
–10 0.35479 1314.7 0.06527 188.40 401.20 0.9572 1.7658 1.144 0.699 1.270 707 163.3 243.4 11.06 99.3 8.77 13.21 –10
–8 0.38054 1308.2 0.06103 190.70 401.99 0.9658 1.7627 1.149 0.707 1.274 697 163.4 238.1 11.15 98.4 8.89 12.91 –8
–6 0.40769 1301.6 0.05713 193.01 402.77 0.9744 1.7596 1.154 0.715 1.278 688 163.4 233.0 11.24 97.5 9.02 12.60 –6
–4 0.43628 1295.0 0.05352 195.33 403.55 0.9830 1.7566 1.159 0.722 1.282 679 163.4 227.9 11.32 96.6 9.15 12.30 –4
–2 0.46636 1288.3 0.05019 197.66 404.30 0.9915 1.7536 1.164 0.731 1.287 669 163.4 223.0 11.41 95.7 9.28 12.00 –2
0 0.49799 1281.5 0.04710 200.00 405.05 1.0000 1.7507 1.169 0.739 1.291 660 163.3 218.2 11.50 94.8 9.42 11.70 0
2 0.53120 1274.7 0.04424 202.35 405.78 1.0085 1.7478 1.175 0.748 1.296 650 163.2 213.5 11.59 93.9 9.56 11.40 2
4 0.56605 1267.8 0.04159 204.71 406.50 1.0169 1.7450 1.181 0.757 1.301 641 163.1 208.9 11.68 93.1 9.70 11.10 4
6 0.60259 1260.8 0.03913 207.09 407.20 1.0254 1.7422 1.187 0.766 1.307 632 163.0 204.4 11.77 92.2 9.84 10.81 6
8 0.64088 1253.8 0.03683 209.47 407.89 1.0338 1.7395 1.193 0.775 1.313 622 162.8 200.0 11.86 91.3 9.99 10.51 8
10 0.68095 1246.7 0.03470 211.87 408.56 1.0422 1.7368 1.199 0.785 1.319 613 162.6 195.7 11.96 90.4 10.14 10.22 10
12 0.72286 1239.5 0.03271 214.28 409.21 1.0505 1.7341 1.206 0.795 1.326 603 162.4 191.5 12.05 89.5 10.29 9.93 12
14 0.76668 1232.2 0.03086 216.70 409.85 1.0589 1.7315 1.213 0.806 1.333 594 162.2 187.3 12.14 88.6 10.45 9.64 14
16 0.81244 1224.9 0.02912 219.14 410.47 1.0672 1.7289 1.220 0.817 1.340 584 161.9 183.2 12.24 87.7 10.61 9.35 16
18 0.86020 1217.4 0.02750 221.59 411.07 1.0755 1.7263 1.228 0.828 1.348 575 161.6 179.2 12.33 86.8 10.77 9.06 18
20 0.91002 1209.9 0.02599 224.06 411.66 1.0838 1.7238 1.236 0.840 1.357 565 161.3 175.3 12.43 85.9 10.95 8.78 20
22 0.96195 1202.3 0.02457 226.54 412.22 1.0921 1.7212 1.244 0.853 1.366 555 161.0 171.5 12.53 85.0 11.12 8.50 22
24 1.01600 1194.6 0.02324 229.04 412.77 1.1004 1.7187 1.252 0.866 1.375 546 160.6 167.7 12.63 84.1 11.30 8.22 24
26 1.07240 1186.7 0.02199 231.55 413.29 1.1086 1.7162 1.261 0.879 1.385 536 160.2 163.9 12.74 83.2 11.49 7.94 26
28 1.13090 1178.8 0.02082 234.08 413.79 1.1169 1.7136 1.271 0.893 1.396 527 159.7 160.3 12.84 82.3 11.69 7.66 28
30 1.19190 1170.7 0.01972 236.62 414.26 1.1252 1.7111 1.281 0.908 1.408 517 159.2 156.7 12.95 81.4 11.89 7.38 30
32 1.25520 1162.6 0.01869 239.19 414.71 1.1334 1.7086 1.291 0.924 1.420 507 158.7 153.1 13.06 80.5 12.10 7.11 32
34 1.32100 1154.3 0.01771 241.77 415.14 1.1417 1.7061 1.302 0.940 1.434 497 158.2 149.6 13.17 79.6 12.31 6.84 34
36 1.38920 1145.8 0.01679 244.38 415.54 1.1499 1.7036 1.314 0.957 1.448 487 157.6 146.1 13.28 78.7 12.54 6.57 36
38 1.46010 1137.3 0.01593 247.00 415.91 1.1582 1.7010 1.326 0.976 1.463 478 157.0 142.7 13.40 77.8 12.77 6.30 38
40 1.53360 1128.5 0.01511 249.65 416.25 1.1665 1.6985 1.339 0.995 1.480 468 156.4 139.4 13.52 76.9 13.02 6.04 40
42 1.60980 1119.6 0.01433 252.32 416.55 1.1747 1.6959 1.353 1.015 1.498 458 155.7 136.1 13.64 76.0 13.28 5.77 42
44 1.68870 1110.6 0.01360 255.01 416.83 1.1830 1.6933 1.368 1.037 1.517 448 155.0 132.8 13.77 75.1 13.55 5.51 44
46 1.77040 1101.4 0.01291 257.73 417.07 1.1913 1.6906 1.384 1.061 1.538 437 154.2 129.5 13.90 74.1 13.83 5.25 46
48 1.85510 1091.9 0.01226 260.47 417.27 1.1997 1.6879 1.401 1.086 1.561 427 153.4 126.3 14.04 73.2 14.13 5.00 48
50 1.94270 1082.3 0.01163 263.25 417.44 1.2080 1.6852 1.419 1.113 1.586 417 152.6 123.1 14.18 72.3 14.45 4.74 50
52 2.03330 1072.4 0.01104 266.05 417.56 1.2164 1.6824 1.439 1.142 1.614 407 151.7 120.0 14.32 71.4 14.78 4.49 52
54 2.12700 1062.3 0.01048 268.89 417.63 1.2248 1.6795 1.461 1.173 1.644 396 150.8 116.9 14.47 70.4 15.14 4.24 54
56 2.22390 1052.0 0.00995 271.76 417.66 1.2333 1.6766 1.485 1.208 1.677 386 149.8 113.8 14.63 69.5 15.52 4.00 56
58 2.32400 1041.3 0.00944 274.66 417.63 1.2418 1.6736 1.511 1.246 1.714 375 148.8 110.7 14.80 68.6 15.92 3.75 58
60 2.42750 1030.4 0.00896 277.61 417.55 1.2504 1.6705 1.539 1.287 1.755 364 147.7 107.6 14.98 67.6 16.36 3.51 60
65 2.70120 1001.4 0.00785 285.18 417.06 1.2722 1.6622 1.626 1.413 1.881 337 144.9 100.0 15.46 65.3 17.61 2.92 65
70 2.99740 969.7 0.00685 293.10 416.09 1.2945 1.6529 1.743 1.584 2.056 309 141.7 92.4 16.02 62.9 19.16 2.36 70
75 3.31770 934.4 0.00595 301.46 414.49 1.3177 1.6424 1.913 1.832 2.315 280 138.1 84.6 16.70 60.6 21.16 1.82 75
80 3.66380 893.7 0.00512 310.44 412.01 1.3423 1.6299 2.181 2.231 2.735 249 134.2 76.6 17.55 58.6 23.87 1.30 80
85 4.03780 844.8 0.00434 320.38 408.19 1.3690 1.6142 2.682 2.984 3.532 215 129.7 68.1 18.71 57.4 27.82 0.83 85
90 4.44230 780.1 0.00356 332.09 401.87 1.4001 1.5922 3.981 4.975 5.626 177 124.6 58.3 20.48 59.3 34.55 0.40 90
95 4.88240 662.9 0.00262 349.56 387.28 1.4462 1.5486 17.31 25.29 26.43 128 118.0 44.4 24.76 83.5 59.15 0.05 95
96.15c 4.99000 523.8 0.00191 366.90 366.90 1.4927 1.4927 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 96.15

Pressure

Refrigerant 23 (Trifluoromethane) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal
Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–155.13a 0.00006 1701.9 241.360 –3.67 289.21 –0.0705 2.4111 1.221 0.500 1.315 1211 135.7 2055.0 5.35 268.6 3.80 34.37 –155.13
–150 0.00014 1685.3 105.950 2.54 291.73 –0.0190 2.3293 1.205 0.506 1.311 1200 138.4 1662.0 5.64 250.2 4.07 33.12 –150
–140 0.00060 1652.0 26.330 14.53 296.65 0.0746 2.1934 1.195 0.522 1.304 1151 143.3 1153.0 6.22 220.9 4.61 30.71 –140
–130 0.00206 1617.9 8.21940 26.48 301.56 0.1612 2.0828 1.195 0.541 1.297 1092 147.9 845.9 6.80 198.2 5.15 28.35 –130
–120 0.00588 1583.3 3.06950 38.45 306.45 0.2420 1.9919 1.199 0.565 1.292 1033 152.2 648.3 7.37 180.1 5.70 26.03 –120
–110 0.01447 1548.2 1.32190 50.47 311.27 0.3179 1.9165 1.205 0.593 1.289 976 156.0 514.4 7.93 165.3 6.25 23.75 –110
–100 0.03157 1512.3 0.63807 62.56 315.98 0.3898 1.8534 1.213 0.625 1.290 921 159.5 419.2 8.48 152.9 6.82 21.53 –100
–90 0.06239 1475.7 0.33766 74.76 320.51 0.4582 1.8000 1.225 0.661 1.294 866 162.4 349.0 9.03 142.4 7.42 19.35 –90
–82.02b 0.10132 1445.6 0.21446 84.60 323.96 0.5106 1.7630 1.237 0.694 1.301 823 164.3 305.1 9.47 135.0 7.92 17.65 –82.02
–80 0.11370 1437.9 0.19248 87.10 324.81 0.5236 1.7543 1.241 0.702 1.304 812 164.7 295.3 9.58 133.2 8.05 17.23 –80
–78 0.12712 1430.2 0.17333 89.59 325.63 0.5364 1.7459 1.245 0.711 1.306 801 165.1 286.1 9.69 131.5 8.18 16.81 –78
–76 0.14175 1422.5 0.15644 92.09 326.44 0.5491 1.7378 1.249 0.721 1.309 790 165.4 277.2 9.80 129.8 8.31 16.40 –76
–74 0.15768 1414.7 0.14151 94.60 327.24 0.5617 1.7299 1.253 0.730 1.312 779 165.8 268.8 9.91 128.2 8.45 15.98 –74
–72 0.17496 1406.8 0.12828 97.12 328.03 0.5742 1.7221 1.258 0.740 1.315 769 166.1 260.7 10.01 126.6 8.59 15.57 –72
–70 0.19370 1398.9 0.11652 99.64 328.79 0.5866 1.7146 1.262 0.750 1.319 758 166.3 253.0 10.12 125.1 8.73 15.16 –70
–68 0.21395 1390.9 0.10605 102.18 329.55 0.5990 1.7073 1.267 0.760 1.323 747 166.6 245.6 10.23 123.5 8.87 14.76 –68
–66 0.23582 1382.8 0.09669 104.72 330.29 0.6112 1.7001 1.272 0.771 1.327 736 166.8 238.5 10.34 122.0 9.02 14.36 –66
–64 0.25937 1374.7 0.08832 107.28 331.01 0.6234 1.6931 1.278 0.782 1.332 725 167.0 231.6 10.45 120.5 9.16 13.96 –64
–62 0.28469 1366.4 0.08081 109.85 331.71 0.6356 1.6863 1.283 0.793 1.337 714 167.1 225.1 10.56 119.1 9.32 13.56 –62
–60 0.31188 1358.1 0.07406 112.43 332.40 0.6476 1.6796 1.290 0.805 1.342 703 167.2 218.7 10.67 117.7 9.47 13.16 –60
–58 0.34102 1349.7 0.06798 115.02 333.06 0.6596 1.6731 1.296 0.817 1.347 692 167.3 212.6 10.78 116.2 9.63 12.77 –58
–56 0.37220 1341.3 0.06249 117.62 333.71 0.6716 1.6667 1.303 0.830 1.354 681 167.3 206.7 10.89 114.9 9.79 12.38 –56
–54 0.40552 1332.7 0.05753 120.24 334.33 0.6835 1.6604 1.310 0.843 1.360 670 167.4 201.1 11.00 113.5 9.96 11.99 –54
–52 0.44106 1324.0 0.05303 122.88 334.94 0.6953 1.6542 1.317 0.856 1.367 659 167.3 195.6 11.11 112.1 10.13 11.61 –52
–50 0.47893 1315.3 0.04895 125.53 335.52 0.7071 1.6482 1.325 0.870 1.375 648 167.3 190.3 11.22 110.8 10.30 11.22 –50
–48 0.51921 1306.4 0.04523 128.19 336.07 0.7189 1.6422 1.333 0.885 1.383 637 167.2 185.1 11.34 109.5 10.48 10.85 –48
–46 0.56201 1297.4 0.04185 130.87 336.61 0.7306 1.6363 1.342 0.900 1.392 625 167.0 180.1 11.45 108.2 10.66 10.47 –46
–44 0.60743 1288.3 0.03877 133.57 337.11 0.7423 1.6305 1.351 0.915 1.401 614 166.8 175.3 11.57 106.9 10.85 10.10 –44
–42 0.65557 1279.0 0.03595 136.29 337.59 0.7539 1.6248 1.361 0.932 1.411 603 166.6 170.6 11.68 105.6 11.04 9.73 –42
–40 0.70653 1269.7 0.03336 139.02 338.04 0.7655 1.6191 1.371 0.949 1.422 591 166.4 166.0 11.80 104.3 11.24 9.36 –40
–38 0.76042 1260.2 0.03100 141.78 338.46 0.7771 1.6135 1.382 0.967 1.433 580 166.1 161.6 11.92 103.1 11.45 9.00 –38
–36 0.81734 1250.5 0.02882 144.56 338.85 0.7887 1.6080 1.393 0.985 1.446 569 165.7 157.3 12.04 101.8 11.66 8.64 –36
–34 0.87740 1240.7 0.02682 147.36 339.21 0.8002 1.6025 1.405 1.005 1.459 557 165.3 153.1 12.16 100.5 11.88 8.28 –34
–32 0.94071 1230.7 0.02498 150.18 339.53 0.8118 1.5970 1.418 1.026 1.474 545 164.9 149.0 12.29 99.3 12.10 7.93 –32
–30 1.00740 1220.5 0.02328 153.03 339.82 0.8233 1.5915 1.432 1.048 1.490 534 164.4 144.9 12.42 98.0 12.33 7.58 –30
–28 1.07750 1210.1 0.02171 155.90 340.06 0.8348 1.5861 1.447 1.072 1.507 522 163.9 141.0 12.55 96.8 12.57 7.23 –28
–26 1.15130 1199.6 0.02026 158.80 340.27 0.8464 1.5806 1.462 1.097 1.526 510 163.3 137.2 12.68 95.5 12.82 6.89 –26
–24 1.22880 1188.8 0.01892 161.73 340.43 0.8579 1.5752 1.479 1.123 1.546 498 162.7 133.4 12.81 94.3 13.08 6.55 –24
–22 1.31000 1177.8 0.01767 164.69 340.55 0.8695 1.5697 1.497 1.152 1.569 486 162 129.7 12.95 93.1 13.35 6.21 –22
–20 1.39530 1166.6 0.01651 167.68 340.62 0.8810 1.5642 1.517 1.182 1.593 474 161.3 126.1 13.10 91.8 13.63 5.88 –20
–18 1.48460 1155.0 0.01544 170.71 340.63 0.8927 1.5586 1.538 1.215 1.620 462 160.5 122.6 13.25 90.5 13.92 5.56 –18
–16 1.57810 1143.2 0.01443 173.77 340.59 0.9043 1.5530 1.561 1.251 1.650 449 159.7 119.1 13.40 89.3 14.23 5.23 –16
–14 1.67600 1131.1 0.01350 176.88 340.49 0.9160 1.5473 1.586 1.290 1.682 437 158.8 115.6 13.56 88.0 14.55 4.92 –14
–12 1.77840 1118.7 0.01263 180.02 340.33 0.9277 1.5416 1.613 1.333 1.719 424 157.9 112.2 13.73 86.7 14.88 4.60 –12
–10 1.88530 1105.9 0.01181 183.21 340.09 0.9395 1.5357 1.643 1.38 1.759 411 156.9 108.9 13.90 85.4 15.23 4.29 –10
–8 1.99710 1092.7 0.01105 186.45 339.78 0.9514 1.5297 1.676 1.432 1.805 399 155.8 105.6 14.09 84.1 15.60 3.99 –8
–6 2.11370 1079.1 0.01033 189.75 339.39 0.9634 1.5235 1.712 1.491 1.857 386 154.7 102.3 14.28 82.7 15.99 3.69 –6
–4 2.23540 1064.9 0.00966 193.10 338.91 0.9755 1.5172 1.754 1.556 1.916 372 153.5 99.0 14.49 81.4 16.40 3.40 –4
–2 2.36240 1050.3 0.00902 196.51 338.33 0.9877 1.5107 1.800 1.630 1.983 359 152.3 95.8 14.71 80.0 16.83 3.11 –2
0 2.49470 1035.1 0.00843 200.00 337.64 1.0000 1.5039 1.853 1.715 2.061 345 151.0 92.5 14.94 78.5 17.29 2.83 0
2 2.63260 1019.2 0.00786 203.56 336.83 1.0125 1.4969 1.915 1.814 2.152 332 149.6 89.3 15.19 77.1 17.79 2.55 2
4 2.77620 1002.5 0.00733 207.22 335.89 1.0252 1.4895 1.986 1.929 2.259 318 148.1 86.1 15.47 75.6 18.32 2.28 4
6 2.92590 985.0 0.00683 210.97 334.78 1.0382 1.4817 2.071 2.067 2.388 303 146.5 82.8 15.77 74.0 18.89 2.02 6
8 3.08170 966.5 0.00635 214.84 333.50 1.0514 1.4735 2.173 2.234 2.545 289 144.9 79.6 16.10 72.4 19.51 1.76 8
10 3.24380 946.7 0.00589 218.84 332.01 1.0650 1.4647 2.300 2.441 2.742 274 143.2 76.2 16.47 70.7 20.20 1.52 10
12 3.41270 925.6 0.00545 223.00 330.27 1.0790 1.4552 2.461 2.704 2.993 259 141.3 72.9 16.89 68.9 20.95 1.28 12
14 3.58850 902.6 0.00502 227.37 328.22 1.0936 1.4448 2.673 3.053 3.325 243 139.4 69.4 17.38 67.0 21.80 1.05 14
16 3.77150 877.4 0.00461 231.98 325.79 1.1089 1.4333 2.966 3.536 3.787 227 137.3 65.8 17.95 65.0 22.76 0.83 16
18 3.96220 849.1 0.00421 236.93 322.84 1.1252 1.4203 3.404 4.252 4.474 210 135.0 62.0 18.64 62.7 23.88 0.63 18
20 4.16100 816.4 0.00381 242.36 319.17 1.1430 1.4050 4.130 5.429 5.602 193 132.5 57.9 19.51 60.2 25.25 0.44 20
25 4.69860 680.1 0.00263 261.94 301.55 1.2067 1.3396 18.870 26.84 26.080 141 124.3 44.3 24.79 53.4 35.21 0.05 25
26.14c 4.83200 526.5 0.00190 280.97 280.97 1.2697 1.2697 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 26.14
*Temperatures on ITS-90 scale aTriple point bNormal boiling point cCritical point

Pressure

Refrigerant 32 (Difluoromethane) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–136.81a 0.00005 1429.3 453.850 –19.07 444.31 –0.1050 3.2937 1.592 0.660 1.321 1414 169.6 1226.0 5.70 242.9 6.95 39.01 –136.81
–130 0.00013 1412.7 174.360 –8.26 448.77 –0.0276 3.1651 1.583 0.665 1.318 1378 173.6 1023.0 5.97 240.6 6.97 37.47 –130
–120 0.00048 1388.4 51.1840 7.52 455.33 0.0790 3.0030 1.573 0.674 1.315 1326 179.2 811.8 6.39 236.1 7.02 35.23 –120
–110 0.00145 1363.8 17.9070 23.20 461.86 0.1782 2.8668 1.565 0.686 1.312 1273 184.5 664.6 6.80 230.6 7.12 33.02 –110
–100 0.00381 1339.0 7.22200 38.83 468.31 0.2711 2.7515 1.560 0.703 1.310 1221 189.5 556.1 7.22 224.3 7.27 30.83 –100
–90 0.00887 1313.9 3.27210 54.42 474.61 0.3586 2.6529 1.559 0.725 1.310 1169 194.1 472.6 7.64 217.4 7.45 28.68 –90
–80 0.01865 1288.4 1.63160 70.02 480.72 0.4415 2.5679 1.561 0.754 1.311 1118 198.3 406.4 8.06 210.0 7.68 26.56 –80
–70 0.03607 1262.4 0.88072 85.66 486.57 0.5204 2.4939 1.566 0.790 1.314 1066 202.0 352.7 8.48 202.2 7.96 24.48 –70
–60 0.06496 1235.7 0.50786 101.38 492.11 0.5958 2.4289 1.576 0.833 1.320 1014 205.1 308.2 8.91 194.2 8.28 22.42 –60
–51.65b 0.10133 1212.9 0.33468 114.59 496.45 0.6565 2.3805 1.587 0.875 1.328 971 207.4 276.7 9.26 187.4 8.60 20.74 –51.65
–50 0.11014 1208.4 0.30944 117.22 497.27 0.6683 2.3714 1.589 0.883 1.329 962 207.7 271.0 9.33 186.0 8.66 20.41 –50
–40 0.17741 1180.2 0.19743 133.23 502.02 0.7382 2.3200 1.608 0.940 1.343 910 209.7 239.4 9.75 177.8 9.10 18.44 –40
–38 0.19409 1174.4 0.18134 136.45 502.91 0.7519 2.3103 1.612 0.952 1.347 900 210.1 233.6 9.84 176.1 9.19 18.05 –38
–36 0.21197 1168.6 0.16680 139.69 503.78 0.7655 2.3008 1.616 0.965 1.350 889 210.4 228.1 9.92 174.5 9.29 17.66 –36
–34 0.23111 1162.8 0.15365 142.93 504.63 0.7791 2.2916 1.621 0.977 1.354 879 210.6 222.6 10.01 172.8 9.39 17.27 –34
–32 0.25159 1156.9 0.14173 146.18 505.47 0.7926 2.2824 1.626 0.990 1.358 868 210.9 217.4 10.09 171.2 9.50 16.89 –32
–30 0.27344 1151.0 0.13091 149.45 506.27 0.8060 2.2735 1.631 1.004 1.363 858 211.1 212.3 10.18 169.5 9.60 16.50 –30
–28 0.29675 1145.0 0.12107 152.72 507.06 0.8193 2.2647 1.637 1.017 1.367 847 211.3 207.4 10.26 167.9 9.71 16.12 –28
–26 0.32157 1138.9 0.11211 156.01 507.83 0.8326 2.2561 1.642 1.031 1.372 837 211.4 202.6 10.35 166.3 9.83 15.74 –26
–24 0.34796 1132.9 0.10393 159.31 508.57 0.8458 2.2476 1.648 1.045 1.377 826 211.5 197.9 10.43 164.6 9.95 15.36 –24
–22 0.37600 1126.7 0.09646 162.62 509.28 0.8589 2.2392 1.654 1.060 1.383 816 211.6 193.3 10.52 163.0 10.07 14.99 –22
–20 0.40575 1120.6 0.08963 165.94 509.97 0.8720 2.2310 1.661 1.075 1.389 805 211.7 188.9 10.61 161.3 10.19 14.61 –20
–18 0.43728 1114.3 0.08337 169.28 510.64 0.8850 2.2229 1.668 1.090 1.395 794 211.7 184.6 10.70 159.7 10.32 14.24 –18
–16 0.47067 1108.0 0.07762 172.63 511.28 0.8979 2.2149 1.675 1.106 1.401 784 211.7 180.5 10.78 158.1 10.46 13.87 –16
–14 0.50597 1101.7 0.07234 175.99 511.89 0.9109 2.2070 1.682 1.122 1.408 773 211.7 176.4 10.87 156.5 10.60 13.50 –14
–12 0.54327 1095.2 0.06749 179.37 512.47 0.9237 2.1992 1.690 1.139 1.416 762 211.6 172.4 10.96 154.9 10.74 13.14 –12
–10 0.58263 1088.8 0.06301 182.76 513.02 0.9365 2.1915 1.698 1.156 1.423 751 211.5 168.5 11.05 153.2 10.89 12.77 –10
–8 0.62414 1082.2 0.05889 186.18 513.54 0.9493 2.1839 1.706 1.174 1.432 741 211.4 164.8 11.14 151.6 11.04 12.41 –8
–6 0.66786 1075.6 0.05508 189.60 514.03 0.9620 2.1764 1.715 1.192 1.440 730 211.2 161.1 11.23 150.0 11.21 12.05 –6
–4 0.71388 1068.9 0.05155 193.05 514.49 0.9747 2.1690 1.725 1.211 1.450 719 211.0 157.5 11.32 148.4 11.38 11.69 –4
–2 0.76226 1062.1 0.04829 196.52 514.91 0.9874 2.1616 1.735 1.231 1.460 708 210.8 154.0 11.42 146.8 11.55 11.34 –2
0 0.81310 1055.3 0.04527 200.00 515.30 1.0000 2.1543 1.745 1.251 1.470 697 210.5 150.6 11.51 145.3 11.73 10.99 0
2 0.86647 1048.3 0.04246 203.50 515.65 1.0126 2.1471 1.756 1.272 1.481 686 210.2 147.3 11.61 143.7 11.93 10.63 2
4 0.92245 1041.3 0.03986 207.03 515.96 1.0252 2.1399 1.767 1.294 1.493 675 209.8 144.0 11.70 142.1 12.13 10.29 4
6 0.98113 1034.2 0.03743 210.58 516.24 1.0377 2.1327 1.779 1.317 1.506 664 209.4 140.8 11.80 140.5 12.34 9.94 6
8 1.04260 1027.0 0.03518 214.15 516.47 1.0503 2.1256 1.792 1.341 1.519 652 209.0 137.7 11.90 139.0 12.56 9.60 8
10 1.10690 1019.7 0.03308 217.74 516.66 1.0628 2.1185 1.806 1.367 1.534 641 208.5 134.6 12.00 137.4 12.79 9.25 10
12 1.17420 1012.2 0.03112 221.36 516.80 1.0753 2.1114 1.820 1.393 1.549 630 208.0 131.6 12.10 135.9 13.04 8.91 12
14 1.24450 1004.7 0.02929 225.01 516.90 1.0878 2.1043 1.835 1.421 1.565 618 207.5 128.7 12.48 134.3 13.29 8.58 14
16 1.31790 997.1 0.02758 228.68 516.95 1.1003 2.0972 1.851 1.450 1.583 607 206.9 125.8 12.60 132.8 13.56 8.24 16
18 1.39460 989.3 0.02598 232.39 516.95 1.1128 2.0902 1.868 1.481 1.602 595 206.3 123.0 12.73 131.2 13.85 7.91 18
20 1.47460 981.4 0.02448 236.12 516.90 1.1253 2.0831 1.886 1.514 1.622 584 205.6 120.3 12.86 129.7 14.16 7.59 20
22 1.55790 973.3 0.02307 239.89 516.79 1.1378 2.0760 1.905 1.548 1.644 572 204.9 117.5 13.00 128.2 14.48 7.26 22
24 1.64480 965.2 0.02175 243.69 516.62 1.1503 2.0688 1.926 1.585 1.668 560 204.1 114.9 13.14 126.6 14.83 6.94 24
26 1.73530 956.8 0.02051 247.53 516.39 1.1629 2.0616 1.948 1.624 1.693 548 203.3 112.2 13.28 125.1 15.19 6.62 26
28 1.82950 948.3 0.01935 251.40 516.09 1.1755 2.0544 1.972 1.667 1.721 536 202.4 109.7 13.43 123.6 15.59 6.30 28
30 1.92750 939.6 0.01826 255.32 515.72 1.1881 2.0471 1.997 1.712 1.750 524 201.5 107.1 13.58 122.1 16.01 5.99 30
32 2.02940 930.7 0.01722 259.28 515.29 1.2007 2.0397 2.025 1.760 1.783 512 200.6 104.6 13.74 120.6 16.46 5.68 32
34 2.13530 921.7 0.01625 263.28 514.77 1.2134 2.0322 2.055 1.813 1.819 499 199.6 102.1 13.90 119.1 16.95 5.37 34
36 2.24540 912.4 0.01533 267.34 514.17 1.2262 2.0246 2.088 1.870 1.858 487 198.5 99.7 14.07 117.6 17.47 5.07 36
38 2.35970 902.8 0.01447 271.45 513.49 1.2391 2.0169 2.124 1.933 1.901 474 197.4 97.3 14.25 116.1 18.04 4.77 38
40 2.47830 893.0 0.01365 275.61 512.71 1.2520 2.0091 2.163 2.001 1.948 461 196.2 94.9 14.44 114.6 18.65 4.47 40
42 2.60140 883.0 0.01287 279.84 511.82 1.2650 2.0011 2.206 2.077 2.001 448 194.9 92.5 14.64 113.1 19.32 4.18 42
44 2.72920 872.6 0.01214 284.13 510.83 1.2781 1.9929 2.255 2.160 2.060 435 193.6 90.2 14.84 111.6 20.05 3.89 44
46 2.86160 861.9 0.01144 288.50 509.72 1.2914 1.9845 2.309 2.254 2.126 421 192.3 87.8 15.06 110.1 20.85 3.61 46
48 2.99890 850.8 0.01078 292.95 508.48 1.3048 1.9759 2.369 2.358 2.201 408 190.8 85.5 15.29 108.6 21.73 3.33 48
50 3.14120 839.3 0.01015 297.49 507.10 1.3183 1.9670 2.439 2.477 2.287 394 189.3 83.2 15.54 107.0 22.69 3.06 50
52 3.28870 827.3 0.00955 302.12 505.57 1.3321 1.9578 2.518 2.613 2.385 379 187.7 80.8 15.80 105.5 23.77 2.79 52
54 3.44150 814.8 0.00897 306.87 503.86 1.3461 1.9482 2.609 2.771 2.499 365 186.0 78.5 16.09 104.0 24.97 2.52 54
56 3.59970 801.7 0.00843 311.74 501.95 1.3603 1.9382 2.717 2.956 2.633 350 184.3 76.1 16.39 102.5 26.31 2.26 56
58 3.76350 787.9 0.00790 316.75 499.82 1.3749 1.9277 2.845 3.175 2.793 335 182.4 73.8 16.73 100.9 27.83 2.01 58
60 3.93320 773.3 0.00740 321.93 497.44 1.3898 1.9166 3.001 3.441 2.987 320 180.4 71.4 17.09 99.4 29.55 1.76 60
62 4.10890 757.8 0.00691 327.30 494.76 1.4052 1.9048 3.193 3.771 3.228 304 178.3 68.9 17.49 97.8 31.54 1.52 62
64 4.29090 741.1 0.00644 332.90 491.73 1.4211 1.8922 3.438 4.190 3.535 288 176.1 66.4 17.95 96.3 33.85 1.29 64
66 4.47930 723.0 0.00598 338.78 488.26 1.4377 1.8785 3.761 4.743 3.938 271 173.7 63.8 18.46 94.8 36.59 1.06 66
68 4.67450 703.2 0.00553 345.02 484.25 1.4553 1.8634 4.207 5.508 4.495 254 171.2 61.1 19.06 93.3 39.90 0.85 68
70 4.87680 680.9 0.00508 351.73 479.52 1.4740 1.8464 4.865 6.639 5.316 236 168.4 58.2 19.76 92.0 44.04 0.64 70
75 5.41680 605.9 0.00391 372.39 461.72 1.5314 1.7880 10.130 15.600 11.720 186 159.6 49.5 22.56 91.5 62.91 0.19 75
78.11c 5.78200 424.0 0.00236 414.15 414.15 1.6486 1.6486 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 78.11

Refrigerant 123 (2,2-Dichloro-1,1,1-Trifluoroethane) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–80 0.00013 1709.6 83.6670 123.92 335.98 0.6712 1.7691 0.924 0.520 1.117 1133 108.3 2093.0 6.68 107.4 3.22 28.42 –80
–70 0.00034 1687.4 32.8420 133.17 341.25 0.7179 1.7422 0.927 0.537 1.113 1091 110.8 1680.0 7.09 104.8 3.79 27.09 –70
–60 0.00081 1665.1 14.3330 142.46 346.66 0.7625 1.7206 0.932 0.553 1.110 1049 113.3 1383.0 7.50 102.0 4.35 25.78 –60
–50 0.00177 1642.6 6.84600 151.81 352.21 0.8054 1.7034 0.939 0.569 1.107 1006 115.6 1160.0 7.91 99.1 4.92 24.48 –50
–40 0.00358 1620.0 3.53190 161.25 357.88 0.8468 1.6901 0.948 0.585 1.105 964 117.9 986.4 8.31 96.1 5.49 23.19 –40
–30 0.00675 1597.0 1.94700 170.78 363.65 0.8868 1.6800 0.958 0.601 1.103 923 120.0 848.0 8.70 93.0 6.05 21.92 –30
–20 0.01200 1573.8 1.13640 180.41 369.52 0.9256 1.6726 0.968 0.617 1.102 881 122.0 735.4 9.09 89.8 6.61 20.66 –20
–10 0.02025 1550.1 0.69690 190.15 375.45 0.9633 1.6675 0.979 0.634 1.102 841 123.8 642.4 9.47 86.7 7.18 19.41 –10
0 0.03265 1526.1 0.44609 200.00 381.44 1.0000 1.6642 0.990 0.651 1.102 801 125.4 564.6 9.84 83.7 7.74 18.18 0
2 0.03574 1521.3 0.40991 201.98 382.64 1.0072 1.6638 0.993 0.654 1.103 793 125.7 550.6 9.91 83.1 7.86 17.94 2
4 0.03907 1516.4 0.37720 203.97 383.84 1.0144 1.6634 0.995 0.658 1.103 785 126.0 537.0 9.99 82.5 7.97 17.70 4
6 0.04264 1511.5 0.34759 205.97 385.05 1.0216 1.6631 0.997 0.661 1.103 777 126.3 523.8 10.06 81.9 8.08 17.45 6
8 0.04647 1506.6 0.32075 207.96 386.25 1.0287 1.6628 0.999 0.665 1.103 769 126.6 511.1 10.13 81.3 8.20 17.21 8
10 0.05057 1501.6 0.29637 209.97 387.46 1.0358 1.6626 1.002 0.668 1.104 761 126.8 498.8 10.20 80.7 8.31 16.97 10
12 0.05495 1496.7 0.27420 211.97 388.66 1.0428 1.6625 1.004 0.672 1.104 754 127.1 486.8 10.28 80.1 8.43 16.73 12
14 0.05963 1491.7 0.25401 213.99 389.87 1.0499 1.6624 1.006 0.675 1.104 746 127.3 475.3 10.35 79.5 8.54 16.49 14
16 0.06463 1486.7 0.23559 216.00 391.08 1.0569 1.6623 1.009 0.679 1.105 738 127.6 464.0 10.42 79.0 8.66 16.25 16
18 0.06995 1481.7 0.21877 218.02 392.29 1.0638 1.6623 1.011 0.682 1.105 730 127.8 453.2 10.49 78.4 8.77 16.01 18
20 0.07561 1476.6 0.20338 220.05 393.49 1.0707 1.6624 1.014 0.686 1.106 723 128.0 442.6 10.56 77.8 8.89 15.77 20
22 0.08163 1471.5 0.18929 222.08 394.70 1.0776 1.6625 1.016 0.690 1.106 715 128.2 432.4 10.63 77.3 9.01 15.53 22
24 0.08802 1466.4 0.17637 224.12 395.91 1.0845 1.6626 1.018 0.693 1.107 707 128.4 422.4 10.70 76.7 9.12 15.30 24
26 0.09480 1461.3 0.16451 226.16 397.12 1.0913 1.6628 1.021 0.697 1.107 700 128.6 412.8 10.77 76.1 9.24 15.06 26
27.82b 0.10133 1456.6 0.15453 228.03 398.22 1.0975 1.6630 1.023 0.701 1.108 693 128.7 404.2 10.84 75.6 9.35 14.84 27.82
28 0.10198 1456.2 0.15360 228.21 398.32 1.0981 1.6630 1.023 0.701 1.108 692 128.7 403.4 10.84 75.6 9.36 14.82 28
30 0.10958 1451.0 0.14356 230.26 399.53 1.1049 1.6633 1.026 0.705 1.109 684 128.9 394.3 10.91 75.0 9.48 14.59 30
32 0.11762 1445.8 0.13431 232.31 400.73 1.1116 1.6635 1.028 0.709 1.109 677 129.0 385.4 10.98 74.5 9.60 14.35 32
34 0.12611 1440.6 0.12577 234.38 401.93 1.1183 1.6639 1.031 0.712 1.110 669 129.1 376.8 11.05 74.0 9.72 14.12 34
36 0.13507 1435.4 0.11789 236.44 403.14 1.1250 1.6642 1.033 0.716 1.111 662 129.3 368.4 11.12 73.4 9.84 13.89 36
38 0.14452 1430.1 0.11060 238.51 404.34 1.1317 1.6646 1.036 0.720 1.112 654 129.4 360.3 11.19 72.9 9.96 13.66 38
40 0.15447 1424.8 0.10385 240.59 405.54 1.1383 1.6651 1.038 0.724 1.113 647 129.5 352.4 11.26 72.4 10.08 13.43 40
42 0.16495 1419.4 0.09759 242.67 406.73 1.1449 1.6655 1.041 0.728 1.114 639 129.5 344.7 11.33 71.8 10.20 13.20 42
44 0.17597 1414.1 0.09179 244.76 407.93 1.1515 1.6660 1.044 0.732 1.115 632 129.6 337.2 11.40 71.3 10.32 12.97 44
46 0.18755 1408.7 0.08641 246.86 409.12 1.1581 1.6665 1.046 0.736 1.116 624 129.7 329.9 11.46 70.8 10.45 12.74 46
48 0.19971 1403.3 0.08140 248.95 410.31 1.1646 1.6670 1.049 0.741 1.117 617 129.7 322.8 11.53 70.3 10.57 12.51 48
50 0.21246 1397.8 0.07674 251.06 411.50 1.1711 1.6676 1.052 0.745 1.119 610 129.7 315.9 11.60 69.8 10.70 12.28 50
52 0.22584 1392.3 0.07240 253.17 412.69 1.1776 1.6682 1.055 0.749 1.120 602 129.7 309.1 11.67 69.3 10.82 12.05 52
54 0.23985 1386.8 0.06836 255.28 413.87 1.1840 1.6688 1.058 0.753 1.121 595 129.7 302.6 11.74 68.8 10.95 11.83 54
56 0.25451 1381.2 0.06458 257.41 415.05 1.1905 1.6694 1.060 0.758 1.123 588 129.7 296.2 11.80 68.3 11.08 11.60 56
58 0.26985 1375.6 0.06106 259.53 416.23 1.1969 1.6701 1.063 0.762 1.124 580 129.7 289.9 11.87 67.8 11.21 11.38 58
60 0.28589 1370.0 0.05777 261.67 417.40 1.2033 1.6707 1.066 0.767 1.126 573 129.6 283.9 11.94 67.3 11.34 11.16 60
62 0.30264 1364.3 0.05469 263.81 418.57 1.2096 1.6714 1.069 0.771 1.127 566 129.6 277.9 12.01 66.8 11.47 10.93 62
64 0.32013 1358.6 0.05180 265.95 419.73 1.2160 1.6721 1.072 0.776 1.129 558 129.5 272.1 12.07 66.3 11.61 10.71 64
66 0.33838 1352.8 0.04910 268.10 420.89 1.2223 1.6728 1.076 0.781 1.131 551 129.4 266.5 12.14 65.9 11.74 10.49 66
68 0.35740 1347.0 0.04656 270.26 422.05 1.2286 1.6735 1.079 0.785 1.133 544 129.3 261.0 12.21 65.4 11.88 10.27 68
70 0.37722 1341.2 0.04418 272.42 423.20 1.2349 1.6743 1.082 0.790 1.135 536 129.2 255.6 12.28 64.9 12.01 10.05 70
72 0.39787 1335.3 0.04195 274.60 424.35 1.2411 1.6750 1.085 0.795 1.137 529 129.0 250.4 12.35 64.5 12.15 9.84 72
74 0.41936 1329.3 0.03985 276.77 425.50 1.2474 1.6758 1.089 0.800 1.139 522 128.9 245.2 12.42 64.0 12.29 9.62 74
76 0.44171 1323.4 0.03787 278.96 426.63 1.2536 1.6766 1.092 0.806 1.142 515 128.7 240.2 12.49 63.5 12.44 9.40 76
78 0.46494 1317.3 0.03601 281.15 427.77 1.2598 1.6774 1.096 0.811 1.144 507 128.5 235.3 12.55 63.1 12.58 9.19 78
80 0.48909 1311.2 0.03426 283.35 428.89 1.2660 1.6781 1.100 0.816 1.147 500 128.3 230.5 12.63 62.6 12.73 8.97 80
82 0.51416 1305.1 0.03261 285.55 430.01 1.2722 1.6789 1.103 0.822 1.150 493 128.1 225.9 12.70 62.2 12.87 8.76 82
84 0.54019 1298.9 0.03105 287.77 431.13 1.2783 1.6797 1.107 0.827 1.152 486 127.8 221.3 12.77 61.7 13.02 8.55 84
86 0.56720 1292.6 0.02958 289.99 432.23 1.2845 1.6806 1.111 0.833 1.156 478 127.6 216.8 12.84 61.3 13.17 8.34 86
88 0.59520 1286.3 0.02819 292.22 433.33 1.2906 1.6814 1.115 0.839 1.159 471 127.3 212.5 12.91 60.8 13.33 8.13 88
90 0.62423 1279.9 0.02687 294.45 434.43 1.2967 1.6822 1.120 0.845 1.162 464 127.0 208.2 12.98 60.4 13.48 7.92 90
92 0.65430 1273.5 0.02563 296.70 435.51 1.3028 1.6830 1.124 0.851 1.166 457 126.6 204.0 13.06 59.9 13.64 7.71 92
94 0.68544 1266.9 0.02445 298.95 436.59 1.3089 1.6838 1.129 0.858 1.169 449 126.3 199.9 13.14 59.5 13.80 7.50 94
96 0.71768 1260.3 0.02334 301.21 437.66 1.3150 1.6846 1.133 0.864 1.173 442 125.9 195.9 13.21 59.1 13.96 7.30 96
98 0.75103 1253.7 0.02228 303.49 438.72 1.3211 1.6854 1.138 0.871 1.177 435 125.5 191.9 13.29 58.6 14.13 7.09 98
100 0.78553 1246.9 0.02128 305.77 439.77 1.3271 1.6862 1.143 0.878 1.182 427 125.1 188.1 13.37 58.2 14.29 6.89 100
110 0.97603 1211.9 0.01697 317.32 444.88 1.3572 1.6902 1.172 0.917 1.208 391 122.8 169.9 13.80 56.0 15.17 5.88 110
120 1.19900 1174.4 0.01361 329.15 449.67 1.3872 1.6938 1.207 0.964 1.243 354 119.8 153.4 14.29 53.9 16.14 4.91 120
130 1.45780 1133.6 0.01094 341.32 454.07 1.4173 1.6969 1.254 1.026 1.294 317 116.0 138.1 14.89 51.7 17.22 3.98 130
140 1.75630 1088.3 0.00879 353.92 457.94 1.4475 1.6992 1.318 1.111 1.369 279 111.5 123.8 15.65 49.5 18.44 3.09 140
150 2.09870 1036.8 0.00703 367.10 461.05 1.4782 1.7003 1.415 1.240 1.493 239 106.0 110.2 16.68 47.2 19.87 2.24 150
160 2.49010 975.7 0.00555 381.13 463.01 1.5101 1.6991 1.584 1.473 1.726 198 99.3 96.8 18.19 44.8 21.63 1.45 160
170 2.93720 896.9 0.00425 396.61 462.89 1.5443 1.6939 1.979 2.033 2.309 154 91.1 82.7 20.71 42.3 24.05 0.74 170
180 3.45060 765.9 0.00292 416.22 456.82 1.5867 1.6763 4.549 5.661 6.158 102 80.6 64.3 26.59 39.7 28.82 0.15 180
183.68c 3.66180 550.0 0.00182 437.39 437.39 1.6325 1.6325 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 183.68

Pressure

Refrigerant 124 (2-Chloro-1,1,1,2-Tetrafluoroethane) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–100 0.00024 1714.6 44.37500 98.87 302.29 0.5417 1.7165 0.953 0.534 1.129 1052 109.1 1964.0 6.66 111.8 4.81 26.10 –100
–90 0.00067 1688.6 16.53100 108.45 307.68 0.5954 1.6832 0.962 0.551 1.125 1007 111.9 1521.0 7.05 108.7 5.26 24.69 –90
–80 0.00169 1662.3 6.96450 118.13 313.21 0.6469 1.6569 0.972 0.569 1.122 963 114.6 1215.0 7.45 105.4 5.74 23.30 –80
–70 0.00379 1635.9 3.25230 127.91 318.86 0.6962 1.6362 0.983 0.586 1.119 919 117.2 994.1 7.84 101.9 6.23 21.92 –70
–60 0.00779 1609.1 1.65600 137.80 324.62 0.7437 1.6202 0.995 0.605 1.117 875 119.6 829.0 8.23 98.5 6.74 20.56 –60
–50 0.01482 1582.0 0.90713 147.81 330.46 0.7896 1.6081 1.007 0.624 1.116 832 121.8 701.6 8.62 94.9 7.27 19.21 –50
–40 0.02642 1554.3 0.52863 157.95 336.36 0.8340 1.5993 1.020 0.644 1.116 790 123.8 600.9 9.01 91.3 7.82 17.88 –40
–30 0.04452 1526.1 0.32470 168.23 342.29 0.8772 1.5930 1.034 0.665 1.118 748 125.5 519.4 9.39 87.7 8.39 16.56 –30
–20 0.07145 1497.3 0.20856 178.66 348.23 0.9191 1.5890 1.049 0.688 1.120 706 126.9 452.4 9.78 84.1 8.98 15.26 –20
–18 0.07813 1491.4 0.19180 180.76 349.42 0.9274 1.5884 1.052 0.693 1.121 698 127.1 440.4 9.86 83.4 9.10 15.00 –18
–16 0.08529 1485.5 0.17665 182.87 350.61 0.9356 1.5879 1.056 0.698 1.122 690 127.3 428.8 9.93 82.7 9.22 14.74 –16
–14 0.09296 1479.6 0.16293 184.99 351.79 0.9438 1.5874 1.059 0.703 1.123 682 127.5 417.6 10.01 82.0 9.34 14.49 –14
–12 0.10117 1473.6 0.15048 187.11 352.97 0.9519 1.5870 1.062 0.708 1.124 673 127.7 406.8 10.09 81.2 9.46 14.23 –12
–11.96b 0.10133 1473.5 0.15026 187.15 352.99 0.9521 1.5870 1.062 0.708 1.124 673 127.7 406.6 10.09 81.2 9.46 14.23 –11.96
–10 0.10993 1467.6 0.13917 189.24 354.15 0.9600 1.5867 1.065 0.713 1.125 665 127.9 396.3 10.16 80.5 9.59 13.98 –10
–8 0.11928 1461.6 0.12888 191.38 355.33 0.9681 1.5864 1.069 0.718 1.126 657 128.1 386.2 10.24 79.8 9.71 13.72 –8
–6 0.12923 1455.5 0.11950 193.52 356.51 0.9761 1.5862 1.072 0.723 1.127 649 128.2 376.4 10.32 79.1 9.84 13.47 –6
–4 0.13983 1449.4 0.11093 195.68 357.68 0.9841 1.5860 1.076 0.729 1.128 641 128.3 366.9 10.40 78.4 9.96 13.22 –4
–2 0.15108 1443.2 0.10310 197.83 358.86 0.9921 1.5859 1.079 0.734 1.129 633 128.5 357.7 10.47 77.7 10.09 12.97 –2
0 0.16303 1437.0 0.09593 200.00 360.02 1.0000 1.5858 1.083 0.740 1.131 625 128.6 348.8 10.55 77.0 10.22 12.72 0
2 0.17570 1430.8 0.08936 202.17 361.19 1.0079 1.5858 1.087 0.746 1.132 617 128.6 340.2 10.63 76.3 10.35 12.47 2
4 0.18911 1424.5 0.08333 204.35 362.35 1.0158 1.5858 1.090 0.751 1.134 609 128.7 331.8 10.71 75.6 10.49 12.22 4
6 0.20331 1418.1 0.07779 206.54 363.51 1.0236 1.5859 1.094 0.757 1.135 601 128.7 323.7 10.79 74.9 10.62 11.97 6
8 0.21830 1411.8 0.07268 208.74 364.67 1.0314 1.5860 1.098 0.763 1.137 593 128.8 315.8 10.87 74.2 10.75 11.72 8
10 0.23414 1405.3 0.06798 210.94 365.82 1.0392 1.5861 1.102 0.769 1.139 585 128.8 308.2 10.95 73.5 10.89 11.48 10
12 0.25084 1398.9 0.06364 213.15 366.97 1.0469 1.5863 1.106 0.776 1.141 577 128.7 300.8 11.03 72.8 11.03 11.23 12
14 0.26844 1392.3 0.05964 215.37 368.11 1.0546 1.5865 1.110 0.782 1.143 569 128.7 293.5 11.11 72.1 11.17 10.99 14
16 0.28696 1385.7 0.05593 217.60 369.25 1.0623 1.5868 1.114 0.788 1.145 561 128.7 286.5 11.19 71.4 11.31 10.74 16
18 0.30644 1379.1 0.05250 219.84 370.38 1.0700 1.5870 1.119 0.795 1.148 553 128.6 279.7 11.28 70.8 11.46 10.50 18
20 0.32692 1372.4 0.04932 222.09 371.51 1.0776 1.5873 1.123 0.802 1.150 545 128.5 273.1 11.36 70.1 11.61 10.26 20
22 0.34842 1365.6 0.04636 224.34 372.63 1.0852 1.5876 1.128 0.809 1.153 537 128.4 266.6 11.44 69.4 11.75 10.02 22
24 0.37097 1358.8 0.04362 226.60 373.75 1.0928 1.5880 1.132 0.816 1.156 529 128.2 260.3 11.53 68.7 11.91 9.78 24
26 0.39462 1351.9 0.04107 228.88 374.85 1.1004 1.5883 1.137 0.823 1.159 521 128.1 254.2 11.61 68.1 12.06 9.54 26
28 0.41938 1345.0 0.03870 231.16 375.96 1.1079 1.5887 1.142 0.830 1.162 513 127.9 248.2 11.70 67.4 12.22 9.30 28
30 0.44530 1337.9 0.03648 233.45 377.05 1.1154 1.5891 1.147 0.838 1.165 505 127.7 242.4 11.79 66.8 12.38 9.06 30
32 0.47241 1330.8 0.03442 235.75 378.14 1.1229 1.5895 1.152 0.845 1.169 497 127.5 236.7 11.88 66.1 12.54 8.83 32
34 0.50075 1323.7 0.03249 238.07 379.22 1.1304 1.5900 1.157 0.853 1.172 489 127.2 231.2 11.97 65.5 12.71 8.59 34
36 0.53034 1316.4 0.03069 240.39 380.29 1.1379 1.5904 1.163 0.861 1.176 481 126.9 225.8 12.06 64.8 12.88 8.36 36
38 0.56123 1309.1 0.02901 242.72 381.36 1.1453 1.5909 1.168 0.870 1.180 473 126.6 220.5 12.16 64.2 13.05 8.13 38
40 0.59345 1301.6 0.02743 245.07 382.41 1.1528 1.5913 1.174 0.878 1.185 465 126.3 215.4 12.25 63.5 13.23 7.90 40
42 0.62704 1294.1 0.02596 247.43 383.45 1.1602 1.5918 1.180 0.887 1.189 457 125.9 210.4 12.35 62.9 13.41 7.67 42
44 0.66202 1286.5 0.02457 249.79 384.49 1.1676 1.5923 1.187 0.897 1.194 449 125.6 205.5 12.45 62.3 13.59 7.44 44
46 0.69845 1278.8 0.02327 252.17 385.51 1.1750 1.5928 1.193 0.906 1.199 441 125.2 200.7 12.55 61.7 13.79 7.21 46
48 0.73635 1271.0 0.02205 254.56 386.52 1.1824 1.5933 1.200 0.916 1.205 433 124.7 196.0 12.66 61.0 13.98 6.98 48
50 0.77577 1263.1 0.02090 256.97 387.53 1.1897 1.5937 1.207 0.926 1.211 425 124.3 191.4 12.77 60.4 14.18 6.76 50
52 0.81675 1255.1 0.01982 259.39 388.51 1.1971 1.5942 1.214 0.937 1.217 417 123.8 187.0 12.88 59.8 14.39 6.53 52
54 0.85931 1247.0 0.01880 261.82 389.49 1.2044 1.5947 1.221 0.948 1.224 409 123.3 182.6 12.99 59.2 14.61 6.31 54
56 0.90350 1238.7 0.01784 264.26 390.45 1.2118 1.5951 1.229 0.959 1.231 401 122.7 178.3 13.11 58.6 14.83 6.09 56
58 0.94937 1230.3 0.01693 266.73 391.39 1.2191 1.5956 1.238 0.971 1.239 393 122.1 174.1 13.27 58.0 15.08 5.87 58
60 0.99695 1221.8 0.01607 269.20 392.33 1.2265 1.5960 1.246 0.984 1.247 385 121.5 169.9 13.40 57.5 15.32 5.65 60
62 1.04630 1213.2 0.01527 271.69 393.24 1.2338 1.5965 1.255 0.997 1.256 376 120.9 165.9 13.53 56.9 15.57 5.43 62
64 1.09740 1204.3 0.01450 274.20 394.14 1.2411 1.5969 1.265 1.011 1.266 368 120.2 161.9 13.67 56.3 15.83 5.21 64
66 1.15040 1195.4 0.01378 276.72 395.01 1.2485 1.5972 1.275 1.026 1.276 360 119.5 158.0 13.82 55.7 16.10 5.00 66
68 1.20520 1186.2 0.01309 279.27 395.87 1.2558 1.5976 1.286 1.042 1.287 351 118.7 154.2 13.97 55.2 16.38 4.79 68
70 1.26200 1176.9 0.01244 281.83 396.71 1.2631 1.5979 1.297 1.058 1.299 343 117.9 150.4 14.12 54.6 16.68 4.58 70
72 1.32070 1167.4 0.01183 284.41 397.52 1.2705 1.5982 1.310 1.076 1.313 334 117.1 146.7 14.28 54.1 16.98 4.37 72
74 1.38150 1157.6 0.01124 287.01 398.31 1.2779 1.5985 1.323 1.095 1.327 326 116.2 143.0 14.45 53.5 17.30 4.16 74
76 1.44430 1147.7 0.01069 289.63 399.08 1.2852 1.5987 1.337 1.115 1.343 317 115.3 139.4 14.63 53.0 17.64 3.95 76
78 1.50930 1137.5 0.01016 292.28 399.81 1.2926 1.5989 1.352 1.137 1.360 309 114.4 135.8 14.82 52.5 17.99 3.75 78
80 1.57640 1127.0 0.00965 294.95 400.52 1.3001 1.5990 1.368 1.160 1.379 300 113.4 132.3 15.01 51.9 18.36 3.54 80
85 1.75400 1099.6 0.00849 301.75 402.14 1.3187 1.5990 1.415 1.229 1.436 278 110.7 123.7 15.54 50.6 19.39 3.05 85
90 1.94620 1070.1 0.00746 308.74 403.51 1.3376 1.5986 1.475 1.318 1.513 255 107.8 115.2 16.16 49.4 20.58 2.56 90
95 2.15420 1037.8 0.00653 315.97 404.56 1.3568 1.5975 1.554 1.437 1.618 231 104.4 106.9 16.88 48.2 22.00 2.09 95
100 2.37870 1001.8 0.00569 323.50 405.20 1.3766 1.5955 1.665 1.607 1.773 207 100.7 98.4 17.75 47.0 23.73 1.64 100
105 2.62120 960.8 0.00492 331.44 405.26 1.3971 1.5923 1.835 1.873 2.022 182 96.6 89.8 18.85 46.0 25.94 1.21 105
110 2.88310 912.1 0.00419 339.99 404.46 1.4188 1.5870 2.135 2.357 2.478 156 91.9 80.8 20.30 45.1 28.94 0.80 110
115 3.16620 849.5 0.00347 349.58 402.13 1.4428 1.5782 2.837 3.513 3.576 127 86.6 70.7 22.45 45.0 33.62 0.43 115
120 3.47390 749.1 0.00267 361.94 395.71 1.4734 1.5593 6.828 9.976 9.676 93 80.2 57.3 26.73 48.2 44.96 0.11 120
122.28c 3.62430 560.0 0.00179 378.79 378.79 1.5156 1.5156 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 122.28

PressurePressure

Refrigerant 125 (Pentafluoroethane) Properties of Saturated Liquid and Saturated Vapor
Temp.,a
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp/cv
Vapor
VelocityofSound,
m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,
–100.63b 0.00291 1690.7 4.0880 87.13 277.39 0.4902 1.5931 1.035 0.569 1.142 933 116.4 1152 7.43 116.0 5.23 21.79 –100.63
–100 0.00309 1688.7 3.8709 87.78 277.74 0.4940 1.5911 1.035 0.570 1.141 929 116.6 1134 7.46 115.7 5.28 21.69 –100
–90 0.00729 1656.2 1.7303 98.18 283.36 0.5524 1.5634 1.045 0.592 1.138 878 119.4 890.8 7.90 111.0 5.92 20.08 –90
–80 0.01547 1623.4 0.85534 108.70 289.06 0.6082 1.5421 1.058 0.615 1.136 827 121.9 720.6 8.34 106.3 6.58 18.50 –80
–70 0.03008 1589.9 0.45942 119.36 294.83 0.6620 1.5257 1.074 0.639 1.136 779 124.1 595.2 8.77 101.6 7.25 16.94 –70
–60 0.05432 1555.7 0.26432 130.19 300.60 0.7140 1.5135 1.091 0.664 1.138 731 126.0 499.3 9.20 96.8 7.92 15.41 –60
–58 0.06066 1548.7 0.23836 132.38 301.75 0.7242 1.5114 1.095 0.669 1.138 721 126.3 482.8 9.29 95.9 8.06 15.11 –58
–56 0.06758 1541.7 0.21542 134.57 302.91 0.7343 1.5095 1.099 0.675 1.139 712 126.6 467.0 9.37 95.0 8.20 14.81 –56
–54 0.07511 1534.7 0.19510 136.78 304.06 0.7444 1.5077 1.103 0.680 1.140 702 126.9 452.0 9.46 94.0 8.33 14.51 –54
–52 0.08329 1527.6 0.17706 138.99 305.20 0.7544 1.5060 1.107 0.686 1.141 693 127.2 437.6 9.54 93.1 8.47 14.21 –52
–50 0.09216 1520.5 0.16100 141.21 306.35 0.7644 1.5044 1.111 0.692 1.142 683 127.4 423.8 9.63 92.2 8.61 13.91 –50
–48.09c 0.10132 1513.6 0.14728 143.34 307.44 0.7739 1.5030 1.115 0.697 1.143 674 127.6 411.1 9.71 91.3 8.75 13.63 –48.09
–48 0.10177 1513.3 0.14668 143.44 307.49 0.7743 1.5029 1.115 0.697 1.143 674 127.6 410.5 9.71 91.3 8.75 13.61 –48
–46 0.11214 1506.0 0.13387 145.68 308.63 0.7842 1.5016 1.119 0.703 1.144 664 127.8 397.9 9.80 90.3 8.89 13.32 –46
–44 0.12332 1498.8 0.12240 147.92 309.77 0.7940 1.5003 1.123 0.709 1.145 655 128.0 385.7 9.89 89.4 9.03 13.02 –44
–42 0.13536 1491.4 0.11209 150.18 310.90 0.8037 1.4991 1.128 0.715 1.146 645 128.2 374.0 9.97 88.5 9.17 12.73 –42
–40 0.14830 1484.0 0.10283 152.44 312.03 0.8134 1.4980 1.132 0.722 1.148 636 128.3 362.8 10.06 87.6 9.32 12.44 –40
–38 0.16218 1476.6 0.09448 154.71 313.16 0.8231 1.4969 1.137 0.728 1.150 627 128.5 352.0 10.14 86.7 9.46 12.15 –38
–36 0.17705 1469.1 0.08693 157.00 314.28 0.8327 1.4960 1.142 0.734 1.151 617 128.6 341.6 10.23 85.7 9.61 11.86 –36
–34 0.19295 1461.5 0.08011 159.29 315.40 0.8423 1.4951 1.146 0.741 1.153 608 128.7 331.6 10.32 84.8 9.75 11.57 –34
–32 0.20994 1453.8 0.07393 161.59 316.51 0.8519 1.4943 1.151 0.748 1.155 599 128.7 321.9 10.40 83.9 9.90 11.29 –32
–30 0.22806 1446.1 0.06831 163.90 317.61 0.8614 1.4935 1.157 0.755 1.157 589 128.7 312.6 10.49 83.0 10.05 11.00 –30
–28 0.24735 1438.4 0.06321 166.22 318.71 0.8708 1.4928 1.162 0.762 1.160 580 128.7 303.6 10.58 82.1 10.20 10.72 –28
–26 0.26787 1430.5 0.05855 168.56 319.80 0.8802 1.4922 1.167 0.769 1.162 570 128.7 294.9 10.66 81.2 10.35 10.44 –26
–24 0.28968 1422.6 0.05431 170.90 320.88 0.8896 1.4916 1.173 0.776 1.165 561 128.7 286.5 10.75 80.3 10.50 10.15 –24
–22 0.31281 1414.5 0.05043 173.26 321.96 0.8990 1.4911 1.178 0.784 1.167 552 128.6 278.4 10.84 79.4 10.65 9.88 –22
–20 0.33733 1406.4 0.04688 175.62 323.03 0.9083 1.4906 1.184 0.791 1.170 542 128.5 270.5 10.93 78.5 10.81 9.60 –20
–18 0.36328 1398.3 0.04363 178.00 324.09 0.9176 1.4901 1.190 0.799 1.173 533 128.4 262.9 11.02 77.7 10.97 9.32 –18
–16 0.39072 1390.0 0.04064 180.39 325.14 0.9268 1.4897 1.196 0.807 1.177 523 128.2 255.5 11.11 76.8 11.12 9.05 –16
–14 0.41970 1381.6 0.03789 182.80 326.19 0.9361 1.4894 1.203 0.815 1.181 514 128.0 248.4 11.21 75.9 11.29 8.78 –14
–12 0.45028 1373.1 0.03536 185.21 327.22 0.9453 1.4890 1.209 0.824 1.184 505 127.8 241.4 11.30 75.0 11.45 8.50 –12
–10 0.48252 1364.5 0.03303 187.64 328.24 0.9544 1.4887 1.216 0.832 1.189 495 127.5 234.7 11.40 74.1 11.62 8.23 –10
–8 0.51646 1355.8 0.03088 190.08 329.25 0.9636 1.4884 1.223 0.841 1.193 486 127.3 228.1 11.49 73.3 11.79 7.97 –8
–6 0.55218 1347.0 0.02890 192.54 330.25 0.9727 1.4882 1.231 0.850 1.198 476 126.9 221.8 11.59 72.4 11.96 7.70 –6
–4 0.58972 1338.1 0.02706 195.01 331.23 0.9818 1.4879 1.238 0.860 1.203 467 126.6 215.6 11.69 71.6 12.14 7.44 –4
–2 0.62915 1329.0 0.02535 197.50 332.20 0.9909 1.4877 1.246 0.870 1.209 457 126.2 209.6 11.79 70.7 12.32 7.17 –2
0 0.67052 1319.8 0.02377 200.00 333.16 1.0000 1.4875 1.255 0.880 1.215 448 125.8 203.7 11.89 69.8 12.50 6.91 0
2 0.71390 1310.5 0.02230 202.52 334.10 1.0091 1.4873 1.263 0.890 1.222 439 125.3 198.0 12.00 69.0 12.69 6.65 2
4 0.75935 1301.0 0.02093 205.05 335.02 1.0181 1.4870 1.273 0.902 1.229 429 124.9 192.4 12.11 68.1 12.88 6.40 4
6 0.80694 1291.3 0.01966 207.60 335.92 1.0272 1.4868 1.282 0.913 1.237 420 124.3 187.0 12.22 67.3 13.08 6.14 6
8 0.85672 1281.5 0.01848 210.17 336.80 1.0362 1.4866 1.292 0.926 1.246 410 123.8 181.7 12.33 66.5 13.29 5.89 8
10 0.90875 1271.5 0.01737 212.76 337.66 1.0452 1.4863 1.303 0.939 1.255 400 123.2 176.5 12.45 65.6 13.50 5.64 10
12 0.96312 1261.3 0.01634 215.37 338.50 1.0542 1.4860 1.314 0.954 1.265 391 122.5 171.4 12.57 64.8 13.72 5.39 12
14 1.0199 1250.9 0.01537 218.00 339.31 1.0633 1.4857 1.326 0.969 1.277 381 121.9 166.5 12.70 64.0 13.95 5.14 14
16 1.0791 1240.3 0.01447 220.65 340.10 1.0723 1.4854 1.339 0.986 1.289 371 121.1 161.6 12.83 63.1 14.18 4.90 16
18 1.1408 1229.4 0.01362 223.32 340.85 1.0813 1.4850 1.352 1.003 1.303 362 120.4 156.9 12.96 62.3 14.43 4.66 18
20 1.2052 1218.3 0.01283 226.02 341.58 1.0904 1.4846 1.367 1.023 1.318 352 119.6 152.2 13.10 61.5 14.69 4.42 20
22 1.2722 1206.9 0.01208 228.74 342.28 1.0995 1.4842 1.382 1.044 1.334 342 118.7 147.6 13.25 60.7 14.96 4.18 22
24 1.3420 1195.3 0.01138 231.49 342.95 1.1085 1.4836 1.399 1.067 1.352 332 117.8 143.1 13.40 59.8 15.24 3.95 24
26 1.4146 1183.3 0.01072 234.26 343.57 1.1176 1.4831 1.417 1.093 1.372 322 116.8 138.7 13.57 59.0 15.55 3.72 26
28 1.4901 1171.0 0.01010 237.07 344.16 1.1268 1.4824 1.436 1.121 1.395 312 115.8 134.4 13.74 58.2 15.87 3.49 28
30 1.5685 1158.4 0.00951 239.91 344.71 1.1359 1.4817 1.457 1.152 1.420 302 114.8 130.1 13.92 57.4 16.21 3.26 30
32 1.6501 1145.4 0.00895 242.78 345.22 1.1452 1.4809 1.481 1.186 1.448 292 113.7 125.9 14.11 56.6 16.57 3.04 32
34 1.7347 1131.9 0.00843 245.69 345.67 1.1544 1.4799 1.507 1.224 1.480 282 112.5 121.7 14.32 55.8 16.97 2.82 34
36 1.8226 1117.9 0.00793 248.64 346.07 1.1637 1.4789 1.536 1.267 1.516 272 111.3 117.6 14.54 54.9 17.39 2.60 36
38 1.9138 1103.5 0.00746 251.63 346.42 1.1731 1.4778 1.568 1.316 1.558 261 109.9 113.5 14.77 54.1 17.86 2.39 38
40 2.0085 1088.4 0.00702 254.67 346.69 1.1826 1.4764 1.605 1.372 1.606 251 108.6 109.4 15.03 53.3 18.37 2.18 40
42 2.1067 1072.7 0.00659 257.76 346.90 1.1921 1.4750 1.647 1.436 1.662 240 107.1 105.4 15.31 52.5 18.93 1.97 42
44 2.2084 1056.2 0.00619 260.92 347.02 1.2018 1.4733 1.697 1.511 1.728 229 105.6 101.3 15.61 51.7 19.55 1.77 44
46 2.3140 1038.9 0.00580 264.14 347.05 1.2116 1.4714 1.755 1.600 1.808 218 104.0 97.3 15.95 50.9 20.25 1.57 46
48 2.4234 1020.6 0.00543 267.44 346.96 1.2216 1.4692 1.824 1.708 1.906 207 102.3 93.3 16.32 50.1 21.04 1.38 48
50 2.5368 1001.1 0.00507 270.83 346.75 1.2318 1.4667 1.910 1.842 2.029 196 100.5 89.2 16.75 49.3 21.95 1.19 50
52 2.6544 980.2 0.00472 274.33 346.38 1.2422 1.4638 2.019 2.014 2.187 184 98.6 85.1 17.23 48.5 23.02 1.01 52
54 2.7763 957.5 0.00439 277.95 345.82 1.2529 1.4604 2.162 2.241 2.398 172 96.6 80.9 17.79 47.7 24.29 0.84 54
56 2.9027 932.6 0.00406 281.75 345.00 1.2641 1.4563 2.359 2.559 2.695 159 94.5 76.5 18.45 47.0 25.83 0.67 56
58 3.0339 904.5 0.00373 285.77 343.85 1.2758 1.4512 2.652 3.036 3.142 146 92.2 71.9 19.25 46.3 27.80 0.51 58
60 3.1703 872.1 0.00340 290.10 342.21 1.2884 1.4448 3.139 3.833 3.889 132 89.8 67.1 20.27 45.9 30.44 0.36 60
62 3.3121 832.4 0.00305 294.95 339.79 1.3024 1.4362 4.120 5.435 5.389 116 87.3 61.6 21.67 46.0 34.37 0.22 62
64 3.4602 777.5 0.00265 300.86 335.77 1.3195 1.4230 7.17 10.29 9.90 100 84.4 54.8 23.90 47.8 41.79 0.09 64
66.02d 3.6177 573.6 0.00174 318.06 318.06 1.3696 1.3696 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 66.02
aTemperatures on ITS-90 scale bTriple point cNormal boiling point dCritical point

Fig.8Pressure-EnthalpyDiagramforRefrigerant134a
Pressure

Refrigerant 134a (1,1,1,2-Tetrafluoroethane) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–103.30a 0.00039 1591.1 35.4960 71.46 334.94 0.4126 1.9639 1.184 0.585 1.164 1120 126.8 2175.0 6.46 145.2 3.08 28.07 –103.30
–100 0.00056 1582.4 25.1930 75.36 336.85 0.4354 1.9456 1.184 0.593 1.162 1103 127.9 1893.0 6.60 143.2 3.34 27.50 –100
–90 0.00152 1555.8 9.7698 87.23 342.76 0.5020 1.8972 1.189 0.617 1.156 1052 131.0 1339.0 7.03 137.3 4.15 25.79 –90
–80 0.00367 1529.0 4.2682 99.16 348.83 0.5654 1.8580 1.198 0.642 1.151 1002 134.0 1018.0 7.46 131.5 4.95 24.10 –80
–70 0.00798 1501.9 2.0590 111.20 355.02 0.6262 1.8264 1.210 0.667 1.148 952 136.8 809.2 7.89 126.0 5.75 22.44 –70
–60 0.01591 1474.3 1.0790 123.36 361.31 0.6846 1.8010 1.223 0.692 1.146 903 139.4 663.1 8.30 120.7 6.56 20.80 –60
–50 0.02945 1446.3 0.60620 135.67 367.65 0.7410 1.7806 1.238 0.720 1.146 855 141.7 555.1 8.72 115.6 7.36 19.18 –50
–40 0.05121 1417.7 0.36108 148.14 374.00 0.7956 1.7643 1.255 0.749 1.148 807 143.6 472.2 9.12 110.6 8.17 17.60 –40
–30 0.08438 1388.4 0.22594 160.79 380.32 0.8486 1.7515 1.273 0.781 1.152 760 145.2 406.4 9.52 105.8 8.99 16.04 –30
–28 0.09270 1382.4 0.20680 163.34 381.57 0.8591 1.7492 1.277 0.788 1.153 751 145.4 394.9 9.60 104.8 9.15 15.73 –28
–26.07b 0.10133 1376.7 0.19018 165.81 382.78 0.8690 1.7472 1.281 0.794 1.154 742 145.7 384.2 9.68 103.9 9.31 15.44 –26.07
–26 0.10167 1376.5 0.18958 165.90 382.82 0.8694 1.7471 1.281 0.794 1.154 742 145.7 383.8 9.68 103.9 9.32 15.43 –26
–24 0.11130 1370.4 0.17407 168.47 384.07 0.8798 1.7451 1.285 0.801 1.155 732 145.9 373.1 9.77 102.9 9.48 15.12 –24
–22 0.12165 1364.4 0.16006 171.05 385.32 0.8900 1.7432 1.289 0.809 1.156 723 146.1 362.9 9.85 102.0 9.65 14.82 –22
–20 0.13273 1358.3 0.14739 173.64 386.55 0.9002 1.7413 1.293 0.816 1.158 714 146.3 353.0 9.92 101.1 9.82 14.51 –20
–18 0.14460 1352.1 0.13592 176.23 387.79 0.9104 1.7396 1.297 0.823 1.159 705 146.4 343.5 10.01 100.1 9.98 14.21 –18
–16 0.15728 1345.9 0.12551 178.83 389.02 0.9205 1.7379 1.302 0.831 1.161 695 146.6 334.3 10.09 99.2 10.15 13.91 –16
–14 0.17082 1339.7 0.11605 181.44 390.24 0.9306 1.7363 1.306 0.838 1.163 686 146.7 325.4 10.17 98.3 10.32 13.61 –14
–12 0.18524 1333.4 0.10744 184.07 391.46 0.9407 1.7348 1.311 0.846 1.165 677 146.8 316.9 10.25 97.4 10.49 13.32 –12
–10 0.20060 1327.1 0.09959 186.70 392.66 0.9506 1.7334 1.316 0.854 1.167 668 146.9 308.6 10.33 96.5 10.66 13.02 –10
–8 0.21693 1320.8 0.09242 189.34 393.87 0.9606 1.7320 1.320 0.863 1.169 658 146.9 300.6 10.41 95.6 10.83 12.72 –8
–6 0.23428 1314.3 0.08587 191.99 395.06 0.9705 1.7307 1.325 0.871 1.171 649 147.0 292.9 10.49 94.7 11.00 12.43 –6
–4 0.25268 1307.9 0.07987 194.65 396.25 0.9804 1.7294 1.330 0.880 1.174 640 147.0 285.4 10.57 93.8 11.17 12.14 –4
–2 0.27217 1301.4 0.07436 197.32 397.43 0.9902 1.7282 1.336 0.888 1.176 631 147.0 278.1 10.65 92.9 11.34 11.85 –2
0 0.29280 1294.8 0.06931 200.00 398.60 1.0000 1.7271 1.341 0.897 1.179 622 146.9 271.1 10.73 92.0 11.51 11.56 0
2 0.31462 1288.1 0.06466 202.69 399.77 1.0098 1.7260 1.347 0.906 1.182 612 146.9 264.3 10.81 91.1 11.69 11.27 2
4 0.33766 1281.4 0.06039 205.40 400.92 1.0195 1.7250 1.352 0.916 1.185 603 146.8 257.6 10.90 90.2 11.86 10.99 4
6 0.36198 1274.7 0.05644 208.11 402.06 1.0292 1.7240 1.358 0.925 1.189 594 146.7 251.2 10.98 89.4 12.04 10.70 6
8 0.38761 1267.9 0.05280 210.84 403.20 1.0388 1.7230 1.364 0.935 1.192 585 146.5 244.9 11.06 88.5 12.22 10.42 8
10 0.41461 1261.0 0.04944 213.58 404.32 1.0485 1.7221 1.370 0.945 1.196 576 146.4 238.8 11.15 87.6 12.40 10.14 10
12 0.44301 1254.0 0.04633 216.33 405.43 1.0581 1.7212 1.377 0.956 1.200 566 146.2 232.9 11.23 86.7 12.58 9.86 12
14 0.47288 1246.9 0.04345 219.09 406.53 1.0677 1.7204 1.383 0.967 1.204 557 146.0 227.1 11.32 85.9 12.77 9.58 14
16 0.50425 1239.8 0.04078 221.87 407.61 1.0772 1.7196 1.390 0.978 1.209 548 145.7 221.5 11.40 85.0 12.95 9.30 16
18 0.53718 1232.6 0.03830 224.66 408.69 1.0867 1.7188 1.397 0.989 1.214 539 145.5 216.0 11.49 84.1 13.14 9.03 18
20 0.57171 1225.3 0.03600 227.47 409.75 1.0962 1.7180 1.405 1.001 1.219 530 145.1 210.7 11.58 83.3 13.33 8.76 20
22 0.60789 1218.0 0.03385 230.29 410.79 1.1057 1.7173 1.413 1.013 1.224 520 144.8 205.5 11.67 82.4 13.53 8.48 22
24 0.64578 1210.5 0.03186 233.12 411.82 1.1152 1.7166 1.421 1.025 1.230 511 144.5 200.4 11.76 81.6 13.72 8.21 24
26 0.68543 1202.9 0.03000 235.97 412.84 1.1246 1.7159 1.429 1.038 1.236 502 144.1 195.4 11.85 80.7 13.92 7.95 26
28 0.72688 1195.2 0.02826 238.84 413.84 1.1341 1.7152 1.437 1.052 1.243 493 143.6 190.5 11.95 79.8 14.13 7.68 28
30 0.77020 1187.5 0.02664 241.72 414.82 1.1435 1.7145 1.446 1.065 1.249 483 143.2 185.8 12.04 79.0 14.33 7.42 30
32 0.81543 1179.6 0.02513 244.62 415.78 1.1529 1.7138 1.456 1.080 1.257 474 142.7 181.1 12.14 78.1 14.54 7.15 32
34 0.86263 1171.6 0.02371 247.54 416.72 1.1623 1.7131 1.466 1.095 1.265 465 142.1 176.6 12.24 77.3 14.76 6.89 34
36 0.91185 1163.4 0.02238 250.48 417.65 1.1717 1.7124 1.476 1.111 1.273 455 141.6 172.1 12.34 76.4 14.98 6.64 36
38 0.96315 1155.1 0.02113 253.43 418.55 1.1811 1.7118 1.487 1.127 1.282 446 141.0 167.7 12.44 75.6 15.21 6.38 38
40 1.0166 1146.7 0.01997 256.41 419.43 1.1905 1.7111 1.498 1.145 1.292 436 140.3 163.4 12.55 74.7 15.44 6.13 40
42 1.0722 1138.2 0.01887 259.41 420.28 1.1999 1.7103 1.510 1.163 1.303 427 139.7 159.2 12.65 73.9 15.68 5.88 42
44 1.1301 1129.5 0.01784 262.43 421.11 1.2092 1.7096 1.523 1.182 1.314 418 138.9 155.1 12.76 73.0 15.93 5.63 44
46 1.1903 1120.6 0.01687 265.47 421.92 1.2186 1.7089 1.537 1.202 1.326 408 138.2 151.0 12.88 72.1 16.18 5.38 46
48 1.2529 1111.5 0.01595 268.53 422.69 1.2280 1.7081 1.551 1.223 1.339 399 137.4 147.0 13.00 71.3 16.45 5.13 48
50 1.3179 1102.3 0.01509 271.62 423.44 1.2375 1.7072 1.566 1.246 1.354 389 136.6 143.1 13.12 70.4 16.72 4.89 50
52 1.3854 1092.9 0.01428 274.74 424.15 1.2469 1.7064 1.582 1.270 1.369 379 135.7 139.2 13.24 69.6 17.01 4.65 52
54 1.4555 1083.2 0.01351 277.89 424.83 1.2563 1.7055 1.600 1.296 1.386 370 134.7 135.4 13.37 68.7 17.31 4.41 54
56 1.5282 1073.4 0.01278 281.06 425.47 1.2658 1.7045 1.618 1.324 1.405 360 133.8 131.6 13.51 67.8 17.63 4.18 56
58 1.6036 1063.2 0.01209 284.27 426.07 1.2753 1.7035 1.638 1.354 1.425 350 132.7 127.9 13.65 67.0 17.96 3.95 58
60 1.6818 1052.9 0.01144 287.50 426.63 1.2848 1.7024 1.660 1.387 1.448 340 131.7 124.2 13.79 66.1 18.31 3.72 60
62 1.7628 1042.2 0.01083 290.78 427.14 1.2944 1.7013 1.684 1.422 1.473 331 130.5 120.6 13.95 65.2 18.68 3.49 62
64 1.8467 1031.2 0.01024 294.09 427.61 1.3040 1.7000 1.710 1.461 1.501 321 129.4 117.0 14.11 64.3 19.07 3.27 64
66 1.9337 1020.0 0.00969 297.44 428.02 1.3137 1.6987 1.738 1.504 1.532 311 128.1 113.5 14.28 63.4 19.50 3.05 66
68 2.0237 1008.3 0.00916 300.84 428.36 1.3234 1.6972 1.769 1.552 1.567 301 126.8 109.9 14.46 62.6 19.95 2.83 68
70 2.1168 996.2 0.00865 304.28 428.65 1.3332 1.6956 1.804 1.605 1.607 290 125.5 106.4 14.65 61.7 20.45 2.61 70
72 2.2132 983.8 0.00817 307.78 428.86 1.3430 1.6939 1.843 1.665 1.653 280 124.0 102.9 14.85 60.8 20.98 2.40 72
74 2.3130 970.8 0.00771 311.33 429.00 1.3530 1.6920 1.887 1.734 1.705 269 122.6 99.5 15.07 59.9 21.56 2.20 74
76 2.4161 957.3 0.00727 314.94 429.04 1.3631 1.6899 1.938 1.812 1.766 259 121.0 96.0 15.30 59.0 22.21 1.99 76
78 2.5228 943.1 0.00685 318.63 428.98 1.3733 1.6876 1.996 1.904 1.838 248 119.4 92.5 15.56 58.1 22.92 1.80 78
80 2.6332 928.2 0.00645 322.39 428.81 1.3836 1.6850 2.065 2.012 1.924 237 117.7 89.0 15.84 57.2 23.72 1.60 80
85 2.9258 887.2 0.00550 332.22 427.76 1.4104 1.6771 2.306 2.397 2.232 207 113.1 80.2 16.67 54.9 26.22 1.14 85
90 3.2442 837.8 0.00461 342.93 425.42 1.4390 1.6662 2.756 3.121 2.820 176 107.9 70.9 17.81 52.8 29.91 0.71 90
95 3.5912 772.7 0.00374 355.25 420.67 1.4715 1.6492 3.938 5.020 4.369 141 101.9 60.4 19.61 51.7 36.40 0.33 95
100 3.9724 651.2 0.00268 373.30 407.68 1.5188 1.6109 17.59 25.35 20.81 101 94.0 45.1 24.21 59.9 60.58 0.04 100
101.06c 4.0593 511.9 0.00195 389.64 389.64 1.5621 1.5621 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 101.06

Refrigerant 134a Properties of Superheated Vapor
Pressure = 0.101325 MPa
Saturation temperature = −26.07°C
Saturation temperature = −10.07°C
Saturation temperature = 8.94°C
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Saturated Saturated Saturated
Liquid 1374.34 166.07 0.8701 747.1 Liquid 1325.78 186.69 0.9506 672.8 Liquid 1263.84 212.08 1.0432 583.8
Vapor 5.26 382.90 1.7476 145.7 Vapor 10.01 392.71 1.7337 146.9 Vapor 19.52 403.80 1.7229 146.6
–20 5.11 387.68 1.7667 147.8
–10 4.89 395.65 1.7976 151.0 –10 10.01 392.77 1.7339 147.0
0 4.69 403.74 1.8278 154.2 0 9.54 401.21 1.7654 150.6
10 4.50 411.97 1.8574 157.2 10 9.13 409.73 1.7961 154.0 10 19.41 404.78 1.7263 147.0
20 4.34 420.34 1.8864 160.1 20 8.76 418.35 1.8260 157.3 20 18.45 414.00 1.7583 151.2
30 4.18 428.85 1.9150 162.9 30 8.42 427.07 1.8552 160.4 30 17.61 423.21 1.7892 155.0
40 4.04 437.52 1.9431 165.7 40 8.12 435.90 1.8839 163.4 40 16.87 432.46 1.8192 158.6
50 3.91 446.33 1.9708 168.4 50 7.83 444.87 1.9121 166.3 50 16.20 441.76 1.8485 162.0
60 3.78 455.30 1.9981 171.0 60 7.57 453.97 1.9398 169.2 60 15.60 451.15 1.8771 165.3
70 3.67 464.43 2.0251 173.6 70 7.33 463.20 1.9671 171.9 70 15.05 460.63 1.9051 168.4
80 3.56 473.70 2.0518 176.1 80 7.11 472.57 1.9940 174.6 80 14.54 470.21 1.9326 171.4
90 3.46 483.13 2.0781 178.6 90 6.89 482.08 2.0206 177.2 90 14.08 479.91 1.9597 174.3
100 3.36 492.71 2.1041 181.0 100 6.70 491.74 2.0468 179.7 100 13.65 489.72 1.9864 177.1
110 3.27 502.44 2.1298 183.4 110 6.51 501.53 2.0727 182.2 110 13.24 499.65 2.0126 179.8
120 3.19 512.32 2.1553 185.7 120 6.34 511.47 2.0983 184.7 120 12.87 509.71 2.0386 182.4
130 3.11 522.35 2.1805 188.1 130 6.17 521.55 2.1236 187.1 130 12.51 519.90 2.0641 185.0
140 3.03 532.52 2.2054 190.3 140 6.01 531.76 2.1486 189.4 140 12.18 530.21 2.0894 187.5
150 2.96 542.83 2.2301 192.6 150 5.87 542.12 2.1734 191.7 150 11.87 540.66 2.1144 190.0
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
30 27.79 418.97 1.7455 149.0
40 26.41 428.72 1.7772 153.4 40 36.98 424.61 1.7437 147.6 40 48.95 419.99 1.7139 141.0
50 25.21 438.44 1.8077 157.4 50 35.03 434.85 1.7758 152.4 50 45.86 430.91 1.7482 146.9
60 24.16 448.16 1.8374 161.2 60 33.36 444.98 1.8067 156.8 60 43.34 441.56 1.7807 152.0
70 23.22 457.93 1.8662 164.7 70 31.90 455.08 1.8366 160.8 70 41.21 452.05 1.8117 156.7
80 22.37 467.75 1.8944 168.0 80 30.62 465.17 1.8656 164.6 80 39.36 462.47 1.8416 160.9
90 21.59 477.65 1.9221 171.2 90 29.46 475.30 1.8939 168.1 90 37.74 472.86 1.8706 164.9
100 20.88 487.64 1.9492 174.3 100 28.41 485.49 1.9215 171.5 100 36.29 483.26 1.8989 168.6
110 20.22 497.72 1.9759 177.3 110 27.46 495.74 1.9486 174.7 110 34.99 493.69 1.9265 172.1
120 19.61 507.92 2.0022 180.1 120 26.58 506.07 1.9753 177.8 120 33.80 504.19 1.9535 175.4
130 19.04 518.22 2.0280 182.9 130 25.77 516.50 215 180.8 130 32.71 514.75 1.9800 178.6
140 18.51 528.63 2.0536 185.6 140 25.01 527.03 2.0272 183.7 140 31.70 525.39 2.0061 181.7
150 18.01 539.17 2.0787 188.2 150 24.31 537.66 2.0527 186.4 150 30.76 536.12 2.0318 184.6
160 17.54 549.82 2.1036 190.8 160 23.65 548.40 2.0777 189.2 160 29.90 546.95 2.0571 187.5
170 17.10 560.59 2.1282 193.3 170 23.03 559.24 2.1025 191.8 170 29.08 557.88 2.0820 190.3
180 16.68 571.48 2.1525 195.8 180 22.45 570.20 2.1270 194.4 180 28.32 568.91 2.1066 193.0
190 16.29 582.50 2.1766 198.2 190 21.89 581.28 2.1511 196.9 190 27.60 580.05 2.1309 195.6
200 15.91 593.63 2.2003 200.6 200 21.37 592.46 2.1750 199.4 200 26.92 591.29 2.1550 198.2
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
50 58.09 426.51 1.7226 140.7
60 54.32 437.83 1.7571 146.9 60 66.61 433.69 1.7347 141.2 60 80.74 428.99 1.7124 134.7
70 51.26 448.81 1.7896 152.3 70 62.25 445.31 1.7691 147.5 70 74.43 441.47 1.7493 142.3
80 48.69 459.61 1.8206 157.1 80 58.74 456.56 1.8014 153.0 80 69.61 453.30 1.7833 148.7
90 46.49 470.30 1.8504 161.5 90 55.79 467.60 1.8322 158.0 90 65.71 464.76 1.8153 154.2
100 44.55 480.94 1.8794 165.6 100 53.24 478.53 1.8619 162.5 100 62.43 476.01 1.8458 159.2
110 42.83 491.58 1.9075 169.4 110 51.03 489.39 1.8906 166.6 110 59.62 487.13 1.8753 163.8
120 41.28 502.25 1.9350 173.0 120 49.05 500.25 1.9186 170.5 120 57.14 498.19 1.9038 168.0
130 39.87 512.95 1.9619 176.4 130 47.28 511.11 1.9459 174.2 130 54.95 509.23 1.9315 171.9
140 38.58 523.72 1.9882 179.7 140 45.67 522.02 1.9726 177.7 140 52.98 520.28 1.9586 175.6
150 37.39 534.56 2.0142 182.8 150 44.19 532.97 1.9988 181.0 150 51.18 531.36 1.9851 179.1
160 36.29 545.48 2.0397 185.8 160 42.83 544 2.0246 184.2 160 49.54 542.49 2.0111 182.5
170 35.26 556.50 2.0648 188.8 170 41.57 555.10 2.0499 187.2 170 48.03 553.68 2.0366 185.7
180 34.31 567.60 2.0896 191.6 180 40.41 566.28 2.0748 190.2 180 46.63 564.94 2.0617 188.8
190 33.40 578.80 2.1141 194.4 190 39.31 577.55 2.0994 193.1 190 45.32 576.29 2.0865 191.8
200 32.56 590.11 2.1382 197.1 200 38.28 588.92 2.1237 195.9 200 44.10 587.71 2.1109 194.7
210 31.76 601.51 2.1621 199.7 210 37.32 600.38 2.1477 198.6 210 42.96 599.23 2.1350 197.6
220 31.01 613.02 2.1856 202.3 220 36.41 611.94 2.1714 201.3 220 41.88 610.84 2.1588 200.3
230 30.29 624.64 2.2090 204.8 230 35.55 623.60 2.1948 203.9 230 40.87 622.55 2.1823 203.0
240 29.61 636.36 2.2320 207.2 240 34.73 635.35 2.2179 206.4 240 39.91 634.35 2.2055 205.6
250 28.96 648.18 2.2548 209.7 250 33.96 647.22 2.2408 208.9 250 39.00 646.25 2.2285 208.2
*Temperatures on ITS-90 scale

Refrigerant 134a Properties of Superheated Vapor (Concluded)
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
70 88.23 437.17 1.7296 136.5 70 104.37 432.22 1.7091 129.9
80 81.54 449.76 1.7657 144.0 80 94.85 445.86 1.7483 138.9 80 110.03 441.49 1.7303 133.3
90 76.38 461.74 1.7992 150.3 90 87.97 458.49 1.7835 146.2 90 100.70 454.98 1.7680 141.8
100 72.17 473.36 1.8308 155.9 100 82.58 470.57 1.8164 152.4 100 93.78 467.61 1.8023 148.7
110 68.64 484.78 1.8610 160.8 110 78.17 482.32 1.8474 157.8 110 88.25 479.75 1.8344 154.7
120 65.60 496.06 1.8900 165.4 120 74.44 493.86 1.8772 162.7 120 83.70 491.59 1.8649 160.0
130 62.91 507.29 1.9183 169.6 130 71.18 505.30 1.9059 167.2 130 79.79 503.25 1.8942 164.9
140 60.53 518.50 1.9457 173.5 140 68.33 516.68 1.9338 171.4 140 76.41 514.81 1.9226 169.3
150 58.37 529.71 1.9725 177.3 150 65.78 528.03 1.9609 175.4 150 73.40 526.32 1.9501 173.5
160 56.42 540.95 1.9988 180.8 160 63.47 539.39 1.9875 179.1 160 70.71 537.81 1.9769 177.4
170 54.62 552.24 2.0246 184.2 170 61.37 550.79 2.0135 182.6 170 68.28 549.31 2.0032 181.1
180 52.97 563.59 2.0499 187.4 180 59.45 562.23 2.0390 186.0 180 66.06 560.84 2.0289 184.6
190 51.44 575.01 2.0748 190.6 190 57.67 573.72 2.0641 189.3 190 64.02 572.42 2.0542 188.0
200 50.01 586.50 2.0993 193.6 200 56.02 585.28 2.0888 192.4 200 62.13 584.06 2.0790 191.3
210 48.68 598.08 2.1236 196.5 210 54.49 596.92 2.1131 195.5 210 60.38 595.76 2.1035 194.4
220 47.43 609.74 2.1475 199.4 220 53.05 608.64 2.1371 198.4 220 58.74 607.53 2.1276 197.5
230 46.25 621.50 2.1710 202.1 230 51.70 620.44 2.1608 201.3 230 57.21 619.38 2.1514 200.4
240 45.14 633.34 2.1944 204.9 240 50.43 632.33 2.1842 204.1 240 55.77 631.31 2.1749 203.3
250 44.09 645.28 2.2174 207.5 250 49.23 644.30 2.2073 206.8 250 54.42 643.33 2.1981 206.1
Pressure =2.400 MPa
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
80 127.96 436.42 1.7112 126.9 80 150.48 430.22 1.6895 119.3
90 114.90 451.12 1.7523 137.0 90 131.08 446.81 1.7359 131.7 90 150.13 441.84 1.7183 125.9
100 105.89 464.44 1.7885 144.8 100 119.15 461.03 1.7745 140.8 100 133.85 457.32 1.7603 136.4
110 99.00 477.04 1.8218 151.5 110 110.50 474.19 1.8093 148.1 110 122.89 471.16 1.7970 144.6
120 93.44 489.22 1.8532 157.2 120 103.72 486.75 1.8417 154.4 120 114.63 484.17 1.8305 151.5
130 88.79 501.14 1.8831 162.4 130 98.17 498.96 1.8724 160.0 130 108.00 496.70 1.8620 157.5
140 84.77 512.90 1.9119 167.2 140 93.46 510.94 1.9017 165.0 140 102.49 508.93 1.8919 162.9
150 81.27 524.57 1.9398 171.6 150 89.39 522.79 1.9301 169.7 150 97.78 520.97 1.9207 167.8
160 78.15 536.20 1.9670 175.7 160 85.80 534.57 1.9576 174.0 160 93.66 532.90 1.9486 172.3
170 75.35 547.82 1.9935 179.6 170 82.59 546.30 1.9844 178.1 170 90.01 544.77 1.9757 176.5
180 72.81 559.45 2.0195 183.3 180 79.70 558.04 2.0106 181.9 180 86.74 556.61 2.0021 180.5
190 70.48 571.11 2.0449 186.8 190 77.07 569.79 2.0362 185.5 190 83.78 568.45 2.0279 184.3
200 68.34 582.82 2.0699 190.2 200 74.65 581.57 2.0614 189.0 200 81.08 580.31 2.0533 187.9
210 66.36 594.58 2.0945 193.4 210 72.43 593.40 2.0861 192.4 210 78.59 592.21 2.0782 191.4
220 64.51 606.41 2.1188 196.6 220 70.36 605.29 2.1105 195.6 220 76.29 604.16 2.1027 194.7
230 62.79 618.31 2.1427 199.6 230 68.44 617.24 2.1345 198.8 230 74.15 616.17 2.1268 198.0
240 61.18 630.29 2.1662 202.5 240 66.64 629.27 2.1581 201.8 240 72.16 628.25 2.1505 201.1
250 59.66 642.35 2.1895 205.4 250 64.95 641.37 2.1815 204.8 250 70.30 640.39 2.1740 204.1
Pressure = 6.00 MPa
Saturation temperature = n/a (supercritical)
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Vel. of
Sound, m/s
Liquid 875.30 334.75 1.4171 200.4 Liquid 626.95 376.48 1.5272 101.3 Liquid
Vapor 189.25 427.47 1.6752 112.2 Vapor 396.29 404.57 1.6024 93.4 Vapor
90 173.82 435.84 1.6983 119.1
100 150.47 453.20 1.7455 131.8
110 136.36 467.93 1.7845 141.0 110 233.68 446.28 1.7131 119.8 110 762.66 375.61 1.5174 173.6
120 126.23 481.47 1.8194 148.5 120 199.79 465.29 1.7621 132.5 120 591.77 405.75 1.5950 127.4
130 118.34 494.36 1.8518 155.0 130 179.83 481.11 1.8018 142.0 130 418.90 439.87 1.6807 120.4
140 111.89 506.86 1.8824 160.7 140 165.73 495.51 1.8371 149.7 140 333.91 465.19 1.7428 130.1
150 106.45 519.11 1.9117 165.9 150 154.89 509.13 1.8697 156.4 150 289.37 484.69 1.7894 139.9
160 101.75 531.21 1.9399 170.6 160 146.10 522.25 1.9004 162.4 160 260.70 501.52 1.8288 148.3
170 97.62 543.21 1.9673 175.0 170 138.74 535.07 1.9296 167.8 170 239.96 516.92 1.8639 155.7
180 93.94 555.16 1.9940 179.2 180 132.41 547.69 1.9578 172.7 180 223.87 531.45 1.8963 162.2
190 90.62 567.10 2.0201 183.1 190 126.88 560.17 1.9850 177.4 190 210.82 545.43 1.9269 168.1
200 87.61 579.05 2.0456 186.8 200 121.97 572.58 2.0115 181.7 200 199.88 559.04 1.9559 173.6
210 84.84 591.02 2.0706 190.4 210 117.55 584.95 2.0374 185.8 210 190.50 572.39 1.9839 178.6
220 82.30 603.03 2.0952 193.8 220 113.56 597.30 2.0627 189.7 220 182.31 585.57 2.0109 183.4
230 79.94 615.10 2.1195 197.2 230 109.90 609.66 2.0875 193.4 230 175.06 598.64 2.0371 187.8
240 77.74 627.22 2.1433 200.4 240 106.55 622.05 2.1119 197.0 240 168.56 611.63 2.0626 192.1
250 75.69 639.41 2.1668 203.4 250 103.44 634.47 2.1359 200.5 250 162.68 624.57 2.0876 196.2
260 73.77 651.66 2.1900 206.5 260 100.56 646.93 2.1595 203.8 260 157.33 637.50 2.1121 200.0
270 71.96 664 2.2130 209.4 270 97.87 659.45 2.1827 207.1 270 152.41 650.43 2.1361 203.8
280 70.25 676.41 2.2356 212.2 280 95.35 672.03 2.2057 210.2 280 147.88 663.38 2.1598 207.4
290 68.63 688.89 2.2580 215.0 290 92.98 684.67 2.2283 213.3 290 143.67 676.35 2.1830 210.9
300 67.10 701.46 2.2801 217.8 300 90.75 697.38 2.2507 216.2 300 139.75 689.36 2.2059 214.3
*Temperatures on ITS-90 scale

Pressure

Refrigerant 143a (1,1,1-Trifluoroethane) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–111.81a 0.00107 1330.5 14.807 52.52 319.59 0.3142 1.9695 1.211 0.630 1.192 1058 137.6 912.1 5.91 137.0 4.90 13.72 –111.81
–110 0.00129 1326.2 12.430 54.71 320.68 0.3277 1.9579 1.212 0.635 1.191 1049 138.2 867.9 5.97 135.8 5.00 13.75 –110
–100 0.00333 1301.9 5.1127 66.87 326.81 0.4000 1.9012 1.220 0.664 1.185 1002 141.7 680.1 6.34 129.5 5.53 13.80 –100
–90 0.00761 1277.2 2.3596 79.13 333.06 0.4688 1.8553 1.233 0.694 1.181 954 144.9 553.4 6.72 123.5 6.10 13.71 –90
–80 0.01572 1252.2 1.1971 91.55 339.40 0.5348 1.8180 1.250 0.726 1.178 907 147.8 462.1 7.08 117.8 6.70 13.48 –80
–70 0.02991 1226.7 0.65675 104.16 345.80 0.5984 1.7879 1.270 0.759 1.177 859 150.4 393.0 7.45 112.5 7.34 13.11 –70
–60 0.05307 1200.6 0.38446 116.99 352.21 0.6599 1.7635 1.293 0.794 1.178 811 152.5 338.8 7.82 107.4 8.02 12.61 –60
–50 0.08874 1173.9 0.23754 130.05 358.58 0.7197 1.7438 1.318 0.833 1.182 764 154.2 294.9 8.19 102.5 8.73 12.00 –50
–48 0.09773 1168.5 0.21695 132.69 359.85 0.7314 1.7403 1.323 0.841 1.184 754 154.5 287.1 8.26 101.6 8.88 11.86 –48
–47.24b 0.10133 1166.4 0.20971 133.70 360.33 0.7359 1.7391 1.325 0.844 1.184 751 154.6 284.2 8.29 101.2 8.94 11.81 –47.24
–46 0.10742 1163.0 0.19849 135.35 361.11 0.7431 1.7370 1.328 0.850 1.185 745 154.7 279.6 8.33 100.6 9.03 11.72 –46
–44 0.11786 1157.5 0.18191 138.01 362.37 0.7548 1.7339 1.334 0.858 1.186 735 154.9 272.3 8.41 99.7 9.18 11.57 –44
–42 0.12907 1152.0 0.16697 140.69 363.62 0.7664 1.7308 1.339 0.867 1.188 726 155.1 265.3 8.48 98.8 9.33 11.42 –42
–40 0.14109 1146.4 0.15350 143.38 364.86 0.7779 1.7279 1.345 0.876 1.189 716 155.3 258.6 8.56 97.8 9.49 11.27 –40
–38 0.15398 1140.8 0.14133 146.08 366.10 0.7894 1.7251 1.351 0.885 1.191 707 155.5 252.0 8.63 96.9 9.65 11.11 –38
–36 0.16775 1135.1 0.13031 148.79 367.34 0.8008 1.7224 1.357 0.894 1.193 697 155.6 245.7 8.70 96.0 9.81 10.95 –36
–34 0.18247 1129.4 0.12032 151.52 368.56 0.8122 1.7198 1.363 0.904 1.195 688 155.7 239.6 8.78 95.1 9.97 10.79 –34
–32 0.19816 1123.7 0.11124 154.25 369.78 0.8236 1.7173 1.369 0.913 1.198 678 155.8 233.6 8.85 94.2 10.13 10.62 –32
–30 0.21488 1117.9 0.10297 157.00 370.99 0.8348 1.7149 1.375 0.923 1.200 669 155.8 227.8 8.93 93.3 10.30 10.44 –30
–28 0.23267 1112.1 0.09544 159.77 372.19 0.8461 1.7126 1.382 0.933 1.203 659 155.9 222.3 9.18 92.4 10.49 10.27 –28
–26 0.25156 1106.2 0.08857 162.54 373.39 0.8573 1.7104 1.388 0.944 1.206 650 155.9 216.8 9.26 91.6 10.66 10.09 –26
–24 0.27161 1100.3 0.08228 165.33 374.57 0.8685 1.7083 1.395 0.955 1.209 640 155.8 211.6 9.33 90.7 10.83 9.90 –24
–22 0.29286 1094.3 0.07652 168.13 375.74 0.8796 1.7062 1.402 0.966 1.212 630 155.8 206.4 9.41 89.8 11.01 9.72 –22
–20 0.31535 1088.3 0.07125 170.95 376.91 0.8907 1.7043 1.409 0.977 1.216 621 155.7 201.4 9.48 89.0 11.19 9.53 –20
–18 0.33915 1082.2 0.06640 173.78 378.06 0.9018 1.7024 1.417 0.988 1.219 611 155.6 196.6 9.56 88.1 11.37 9.33 –18
–16 0.36428 1076.0 0.06194 176.63 379.20 0.9128 1.7005 1.424 1.000 1.223 602 155.4 191.8 9.64 87.2 11.55 9.14 –16
–14 0.39081 1069.8 0.05784 179.49 380.33 0.9238 1.6987 1.432 1.012 1.227 592 155.2 187.2 9.71 86.4 11.74 8.94 –14
–12 0.41877 1063.6 0.05405 182.37 381.44 0.9347 1.6970 1.440 1.025 1.232 582 155.0 182.7 9.79 85.5 11.94 8.74 –12
–10 0.44823 1057.2 0.05056 185.27 382.54 0.9457 1.6953 1.449 1.038 1.237 573 154.8 178.4 9.87 84.7 12.13 8.53 –10
–8 0.47923 1050.8 0.04733 188.18 383.63 0.9566 1.6937 1.457 1.051 1.242 563 154.5 174.1 9.95 83.9 12.33 8.32 –8
–6 0.51182 1044.3 0.04434 191.11 384.70 0.9675 1.6921 1.466 1.065 1.247 553 154.2 169.9 10.04 83.0 12.53 8.12 –6
–4 0.54606 1037.7 0.04158 194.05 385.75 0.9783 1.6906 1.476 1.079 1.253 544 153.9 165.8 10.12 82.2 12.74 7.90 –4
–2 0.58199 1031.0 0.03901 197.02 386.79 0.9892 1.6890 1.485 1.093 1.260 534 153.5 161.8 10.21 81.4 12.96 7.69 –2
0 0.61967 1024.3 0.03662 200.00 387.81 1.0000 1.6876 1.495 1.109 1.266 524 153.1 157.9 10.29 80.5 13.17 7.47 0
2 0.65916 1017.4 0.03440 203.00 388.81 1.0108 1.6861 1.505 1.124 1.273 515 152.6 154.1 10.38 79.7 13.40 7.25 2
4 0.70051 1010.5 0.03234 206.03 389.79 1.0216 1.6846 1.516 1.141 1.281 505 152.1 150.3 10.47 78.9 13.63 7.03 4
6 0.74378 1003.5 0.03042 209.07 390.75 1.0324 1.6832 1.528 1.158 1.289 495 151.6 146.6 10.57 78.1 13.87 6.81 6
8 0.78901 996.3 0.02862 212.13 391.68 1.0432 1.6818 1.539 1.176 1.298 485 151.0 143.0 10.66 77.2 14.12 6.59 8
10 0.83628 989.1 0.02695 215.22 392.60 1.0539 1.6804 1.552 1.194 1.307 475 150.4 139.5 10.76 76.4 14.38 6.36 10
12 0.88564 981.7 0.02538 218.33 393.48 1.0647 1.6790 1.565 1.214 1.317 465 149.8 136.0 10.86 75.6 14.64 6.14 12
14 0.93714 974.2 0.02392 221.47 394.35 1.0755 1.6775 1.578 1.234 1.328 455 149.1 132.6 10.96 74.8 14.92 5.91 14
16 0.99085 966.5 0.02255 224.63 395.18 1.0863 1.6761 1.593 1.256 1.340 445 148.4 129.3 11.07 74.0 15.21 5.68 16
18 1.0468 958.7 0.02126 227.81 395.98 1.0970 1.6747 1.608 1.278 1.353 435 147.6 126.0 11.18 73.2 15.51 5.45 18
20 1.1052 950.8 0.02005 231.02 396.76 1.1078 1.6732 1.624 1.302 1.366 425 146.8 122.7 11.29 72.4 15.82 5.22 20
22 1.1659 942.7 0.01892 234.27 397.50 1.1186 1.6717 1.641 1.328 1.381 415 145.9 119.5 11.40 71.5 16.15 4.99 22
24 1.2290 934.4 0.01785 237.54 398.20 1.1295 1.6701 1.659 1.355 1.398 405 145.0 116.4 11.52 70.7 16.50 4.76 24
26 1.2947 926.0 0.01685 240.84 398.87 1.1403 1.6685 1.679 1.384 1.416 394 144.0 113.3 11.64 69.9 16.87 4.53 26
28 1.3630 917.3 0.01591 244.18 399.49 1.1512 1.6669 1.699 1.416 1.435 384 143.0 110.2 11.77 69.1 17.26 4.30 28
30 1.4340 908.4 0.01501 247.56 400.07 1.1621 1.6652 1.722 1.449 1.457 374 141.9 107.2 11.91 68.3 17.67 4.07 30
32 1.5077 899.3 0.01417 250.97 400.61 1.1730 1.6634 1.746 1.486 1.480 363 140.8 104.2 12.04 67.5 18.11 3.84 32
34 1.5842 890.0 0.01338 254.42 401.09 1.1840 1.6616 1.772 1.526 1.507 352 139.6 101.2 12.19 66.6 18.58 3.61 34
36 1.6636 880.4 0.01262 257.91 401.52 1.1951 1.6596 1.801 1.570 1.536 342 138.4 98.3 12.34 65.8 19.09 3.38 36
38 1.7460 870.5 0.01191 261.45 401.89 1.2062 1.6575 1.832 1.618 1.569 331 137.1 95.4 12.50 65.0 19.63 3.16 38
40 1.8314 860.3 0.01123 265.04 402.19 1.2174 1.6553 1.867 1.671 1.606 320 135.7 92.5 12.67 64.2 20.22 2.93 40
42 1.9200 849.7 0.01059 268.68 402.42 1.2286 1.6530 1.906 1.732 1.648 309 134.3 89.7 12.85 63.3 20.87 2.71 42
44 2.0117 838.7 0.00998 272.39 402.56 1.2400 1.6505 1.949 1.799 1.696 298 132.8 86.8 13.03 62.5 21.57 2.49 44
46 2.1068 827.3 0.00940 276.15 402.62 1.2515 1.6478 1.998 1.877 1.752 286 131.2 84.0 13.24 61.7 22.35 2.27 46
48 2.2053 815.4 0.00884 279.98 402.58 1.2631 1.6448 2.054 1.966 1.817 275 129.6 81.1 13.45 60.8 23.20 2.06 48
50 2.3073 803.0 0.00831 283.90 402.43 1.2748 1.6416 2.118 2.070 1.894 263 127.9 78.3 13.69 60.0 24.16 1.85 50
52 2.4130 789.9 0.00780 287.90 402.15 1.2868 1.6381 2.194 2.194 1.985 251 126.1 75.4 13.94 59.1 25.23 1.64 52
54 2.5224 776.1 0.00731 292.00 401.72 1.2989 1.6343 2.285 2.343 2.097 238 124.2 72.5 14.23 58.2 26.45 1.44 54
56 2.6357 761.5 0.00684 296.22 401.12 1.3113 1.6300 2.395 2.528 2.236 226 122.2 69.6 14.54 57.4 27.84 1.24 56
58 2.7530 745.8 0.00639 300.57 400.31 1.3240 1.6252 2.534 2.762 2.413 213 120.1 66.6 14.89 56.5 29.45 1.05 58
60 2.8744 728.9 0.00594 305.09 399.24 1.3371 1.6197 2.714 3.069 2.647 200 117.9 63.6 15.29 55.6 31.37 0.87 60
65 3.1977 678.3 0.00486 317.45 394.94 1.3726 1.6018 3.564 4.532 3.763 164 111.8 55.4 16.64 53.6 38.41 0.45 65
70 3.5527 600.8 0.00370 333.19 385.42 1.4172 1.5694 7.720 11.500 9.040 122 104.2 45.1 19.30 53.2 55.97 0.11 70
72.71c 3.7610 431.0 0.00232 358.91 358.91 1.4906 1.4906 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 72.71

Pressure

Refrigerant 152a (1,1-Difluoroethane) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–118.59a 0.00006 1192.9 303.290 13.79 419.32 0.1119 2.7357 1.477 0.699 1.220 1401 154.0 2025.0 5.20 176.3 0.10 31.65 –118.59
–110 0.00019 1177.1 107.740 26.62 425.38 0.1927 2.6368 1.505 0.717 1.214 1337 157.8 1528.0 5.48 170.2 0.94 30.23 –110
–100 0.00058 1158.7 37.6170 41.75 432.59 0.2827 2.5399 1.518 0.740 1.207 1275 162.0 1153.0 5.81 163.4 1.91 28.58 –100
–90 0.00153 1140.1 15.0520 56.96 439.97 0.3681 2.4593 1.524 0.763 1.201 1219 166.0 904.0 6.14 156.9 2.89 26.96 –90
–80 0.00359 1121.3 6.74380 72.23 447.48 0.4492 2.3920 1.530 0.789 1.196 1166 169.8 730.2 6.47 150.7 3.86 25.34 –80
–70 0.00765 1102.4 3.31970 87.57 455.08 0.5266 2.3357 1.539 0.816 1.192 1115 173.4 603.5 6.80 144.7 4.84 23.75 –70
–60 0.01500 1083.2 1.76820 103.02 462.74 0.6009 2.2885 1.551 0.845 1.190 1066 176.6 507.4 7.14 139.0 5.82 22.18 –60
–50 0.02742 1063.7 1.00640 118.62 470.40 0.6723 2.2487 1.567 0.877 1.189 1016 179.5 432.5 7.47 133.5 6.81 20.63 –50
–40 0.04721 1043.8 0.60583 134.40 478.02 0.7414 2.2152 1.587 0.913 1.190 967 182.1 372.5 7.80 128.2 7.80 19.09 –40
–30 0.07718 1023.5 0.38242 150.39 485.55 0.8085 2.1868 1.610 0.952 1.193 919 184.2 323.6 8.14 123.1 8.80 17.58 –30
–28 0.08469 1019.4 0.35056 153.62 487.04 0.8216 2.1817 1.615 0.960 1.194 909 184.5 314.8 8.21 122.1 9.01 17.29 –28
–26 0.09276 1015.3 0.32186 156.86 488.52 0.8348 2.1767 1.620 0.968 1.195 899 184.9 306.4 8.27 121.2 9.21 16.99 –26
–24.02b 0.10133 1011.2 0.29622 160.07 489.98 0.8477 2.1719 1.625 0.977 1.196 889 185.2 298.4 8.34 120.2 9.41 16.69 –24.02
–24 0.10142 1011.1 0.29595 160.11 490.00 0.8478 2.1719 1.625 0.977 1.196 889 185.2 298.3 8.34 120.2 9.41 16.69 –24
–22 0.11072 1006.9 0.27253 163.37 491.47 0.8608 2.1672 1.630 0.985 1.197 880 185.5 290.5 8.41 119.2 9.62 16.39 –22
–20 0.12068 1002.7 0.25131 166.64 492.94 0.8737 2.1627 1.635 0.994 1.199 870 185.8 282.9 8.48 118.2 9.82 16.10 –20
–18 0.13133 998.5 0.23206 169.92 494.40 0.8866 2.1583 1.641 1.003 1.200 860 186.1 275.6 8.54 117.3 10.03 15.80 –18
–16 0.14271 994.2 0.21457 173.21 495.85 0.8994 2.1541 1.647 1.013 1.202 850 186.3 268.6 8.61 116.3 10.23 15.51 –16
–14 0.15484 989.9 0.19865 176.52 497.29 0.9122 2.1500 1.653 1.022 1.203 841 186.5 261.7 8.68 115.4 10.44 15.22 –14
–12 0.16777 985.6 0.18414 179.83 498.72 0.9249 2.1460 1.658 1.032 1.205 831 186.7 255.1 8.75 114.5 10.65 14.93 –12
–10 0.18152 981.3 0.17090 183.16 500.15 0.9375 2.1421 1.665 1.041 1.207 821 186.9 248.7 8.82 113.5 10.86 14.64 –10
–8 0.19614 976.9 0.15879 186.50 501.56 0.9501 2.1383 1.671 1.051 1.209 811 187.0 242.6 8.88 112.6 11.07 14.35 –8
–6 0.21166 972.5 0.14770 189.86 502.96 0.9627 2.1347 1.677 1.062 1.211 801 187.1 236.6 8.95 111.7 11.28 14.06 –6
–4 0.22812 968.1 0.13754 193.22 504.36 0.9752 2.1311 1.684 1.072 1.213 792 187.2 230.8 9.02 110.8 11.50 13.77 –4
–2 0.24555 963.6 0.12821 196.61 505.74 0.9876 2.1277 1.690 1.083 1.215 782 187.3 225.1 9.09 109.8 11.71 13.48 –2
0 0.26399 959.1 0.11963 200.00 507.11 1.0000 2.1243 1.697 1.094 1.218 772 187.4 219.7 9.16 108.9 11.93 13.20 0
2 0.28349 954.6 0.11174 203.41 508.47 1.0124 2.1211 1.704 1.105 1.221 762 187.4 214.4 9.23 108.0 12.14 12.91 2
4 0.30407 950.0 0.10447 206.83 509.82 1.0247 2.1179 1.711 1.116 1.224 752 187.4 209.2 9.30 107.1 12.36 12.63 4
6 0.32578 945.4 0.09776 210.27 511.16 1.0370 2.1148 1.719 1.128 1.227 742 187.4 204.2 9.37 106.2 12.58 12.35 6
8 0.34867 940.8 0.09156 213.72 512.48 1.0492 2.1118 1.726 1.139 1.230 733 187.3 199.4 9.44 105.4 12.80 12.07 8
10 0.37277 936.1 0.08583 217.19 513.78 1.0614 2.1089 1.734 1.152 1.233 723 187.2 194.7 9.51 104.5 13.03 11.79 10
12 0.39812 931.3 0.08052 220.67 515.08 1.0736 2.1060 1.742 1.164 1.237 713 187.1 190.1 9.58 103.6 13.25 11.51 12
14 0.42476 926.6 0.07560 224.17 516.36 1.0857 2.1032 1.750 1.177 1.240 703 187.0 185.6 9.65 102.7 13.48 11.23 14
16 0.45275 921.8 0.07104 227.69 517.62 1.0978 2.1005 1.759 1.190 1.244 693 186.8 181.3 9.73 101.8 13.71 10.96 16
18 0.48211 916.9 0.06680 231.22 518.86 1.1098 2.0978 1.768 1.203 1.249 683 186.6 177.1 9.80 101.0 13.95 10.68 18
20 0.51291 912.0 0.06286 234.77 520.09 1.1219 2.0952 1.776 1.217 1.253 673 186.4 173.0 9.87 100.1 14.18 10.41 20
22 0.54517 907.0 0.05919 238.34 521.30 1.1339 2.0926 1.786 1.231 1.258 663 186.1 169.0 9.95 99.3 14.42 10.14 22
24 0.57894 902.0 0.05577 241.93 522.50 1.1459 2.0901 1.795 1.246 1.263 653 185.8 165.1 10.02 98.4 14.66 9.87 24
26 0.61428 896.9 0.05258 245.53 523.67 1.1578 2.0876 1.805 1.261 1.268 643 185.5 161.3 10.10 97.5 14.91 9.60 26
28 0.65122 891.8 0.04960 249.16 524.83 1.1698 2.0852 1.815 1.277 1.274 633 185.1 157.6 10.18 96.7 15.16 9.33 28
30 0.68982 886.6 0.04682 252.80 525.96 1.1817 2.0828 1.826 1.293 1.280 623 184.7 154.0 10.26 95.9 15.41 9.06 30
32 0.73012 881.4 0.04422 256.47 527.07 1.1936 2.0804 1.837 1.309 1.286 613 184.3 150.4 10.34 95.0 15.67 8.80 32
34 0.77216 876.0 0.04179 260.16 528.16 1.2055 2.0780 1.848 1.326 1.293 602 183.9 147.0 10.42 94.2 15.93 8.54 34
36 0.81600 870.7 0.03951 263.86 529.23 1.2174 2.0757 1.860 1.344 1.300 592 183.4 143.6 10.50 93.3 16.20 8.27 36
38 0.86169 865.2 0.03737 267.60 530.27 1.2292 2.0734 1.872 1.362 1.307 582 182.9 140.3 10.58 92.5 16.47 8.01 38
40 0.90927 859.7 0.03536 271.35 531.28 1.2411 2.0711 1.885 1.381 1.315 572 182.3 137.1 10.66 91.7 16.74 7.75 40
42 0.95879 854.1 0.03348 275.13 532.27 1.2529 2.0689 1.898 1.401 1.324 561 181.7 134.0 10.75 90.8 17.03 7.50 42
44 1.01030 848.4 0.03170 278.93 533.23 1.2648 2.0666 1.912 1.421 1.333 551 181.1 130.9 10.84 90.0 17.32 7.24 44
46 1.06390 842.6 0.03004 282.76 534.16 1.2766 2.0643 1.926 1.443 1.342 541 180.4 127.9 11.21 89.2 17.60 6.99 46
48 1.11960 836.7 0.02846 286.62 535.06 1.2884 2.0620 1.941 1.465 1.353 530 179.7 125.0 11.32 88.4 17.90 6.73 48
50 1.17740 830.8 0.02699 290.50 535.93 1.3003 2.0598 1.957 1.489 1.364 520 178.9 122.1 11.42 87.5 18.22 6.48 50
52 1.23740 824.7 0.02559 294.41 536.77 1.3121 2.0575 1.974 1.513 1.375 509 178.2 119.2 11.53 86.7 18.54 6.23 52
54 1.29970 818.6 0.02427 298.35 537.56 1.3240 2.0552 1.992 1.539 1.388 499 177.3 116.5 11.64 85.9 18.87 5.98 54
56 1.36430 812.3 0.02303 302.33 538.32 1.3358 2.0528 2.010 1.566 1.402 488 176.4 113.7 11.76 85.1 19.21 5.74 56
58 1.43130 805.9 0.02185 306.34 539.04 1.3477 2.0504 2.030 1.595 1.416 478 175.5 111.1 11.88 84.2 19.56 5.50 58
60 1.50070 799.4 0.02074 310.38 539.72 1.3596 2.0480 2.051 1.626 1.432 467 174.6 108.4 12.00 83.4 19.92 5.25 60
62 1.57260 792.7 0.01968 314.45 540.35 1.3716 2.0456 2.073 1.658 1.450 456 173.6 105.8 12.12 82.6 20.30 5.01 62
64 1.64710 785.9 0.01868 318.57 540.94 1.3835 2.0431 2.097 1.693 1.468 445 172.5 103.3 12.26 81.8 20.70 4.78 64
66 1.72420 779.0 0.01774 322.72 541.47 1.3955 2.0405 2.122 1.730 1.488 435 171.4 100.8 12.39 80.9 21.11 4.54 66
68 1.80390 771.9 0.01684 326.92 541.95 1.4076 2.0379 2.150 1.769 1.511 424 170.2 98.3 12.53 80.1 21.54 4.31 68
70 1.88640 764.6 0.01598 331.16 542.37 1.4196 2.0351 2.179 1.812 1.535 413 169.0 95.9 12.68 79.3 22.00 4.08 70
72 1.97170 757.2 0.01517 335.45 542.73 1.4318 2.0323 2.211 1.859 1.562 402 167.8 93.5 12.83 78.5 22.48 3.85 72
74 2.05990 749.5 0.01440 339.79 543.02 1.4440 2.0294 2.245 1.909 1.591 390 166.5 91.1 12.99 77.6 22.98 3.62 74
76 2.15100 741.6 0.01366 344.18 543.24 1.4562 2.0264 2.283 1.964 1.624 379 165.1 88.7 13.16 76.8 23.51 3.40 76
78 2.24520 733.5 0.01296 348.63 543.38 1.4686 2.0232 2.324 2.025 1.661 368 163.7 86.4 13.34 76.0 24.08 3.18 78
80 2.34240 725.2 0.01228 353.15 543.43 1.4810 2.0198 2.370 2.092 1.702 356 162.2 84.1 13.52 75.2 24.69 2.96 80
90 2.87800 678.5 0.00933 376.87 542.06 1.5451 2.0000 2.703 2.586 2.016 297 153.7 72.6 14.64 71.0 28.54 1.91 90
100 3.50500 618.5 0.00686 403.59 536.28 1.6151 1.9707 3.495 3.776 2.805 233 143.1 60.7 16.35 67.0 35.03 0.96 100
110 4.24320 517.4 0.00446 439.22 517.31 1.7058 1.9096 9.260 12.220 8.530 158 129.1 45.6 20.19 67.5 53.48 0.17 110
113.26c 4.51680 368.0 0.00272 477.55 477.55 1.8037 1.8037 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 113.26

Fig.11Pressure-EnthalpyDiagramforRefrigerant245fa
Pressure

Refrigerant 245fa (1,1,1,3,3-Pentafluoropropane) Properties of Saturated Liquid and Saturated Vapor
Temp.,a
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp/cv
Vapor
VelocityofSound,
m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,
–60 0.00127 1548.7 10.380 126.08 361.82 0.6949 1.8009 1.200 0.701 1.101 1041 120.3 2026. 7.36 115.5 9.08 24.67 –60
–50 0.00281 1525.2 4.9038 138.12 368.68 0.7501 1.7834 1.208 0.725 1.099 994 122.7 1501. 7.71 111.9 9.27 23.47 –50
–40 0.00572 1501.6 2.5079 150.24 375.67 0.8033 1.7702 1.218 0.751 1.098 948 125.0 1174. 8.06 108.5 9.54 22.26 –40
–30 0.01085 1477.7 1.3726 162.48 382.76 0.8547 1.7606 1.229 0.778 1.098 902 127.1 951.2 8.40 105.2 9.89 21.03 –30
–20 0.01937 1453.6 0.79638 174.84 389.94 0.9044 1.7541 1.242 0.806 1.099 859 129.0 790.1 8.75 102.1 10.30 19.78 –20
–10 0.03277 1429.0 0.48586 187.34 397.18 0.9528 1.7502 1.257 0.837 1.100 815 130.7 668.3 9.09 99.0 10.77 18.52 –10
0 0.05292 1404.0 0.30955 200.00 404.47 1.0000 1.7486 1.274 0.868 1.103 773 132.1 573.2 9.42 95.9 11.31 17.25 0
2 0.05795 1398.9 0.28419 202.55 405.93 1.0093 1.7484 1.277 0.875 1.104 765 132.3 556.7 9.49 95.3 11.43 16.99 2
4 0.06336 1393.8 0.26129 205.11 407.39 1.0186 1.7484 1.281 0.881 1.104 756 132.5 540.8 9.56 94.7 11.55 16.74 4
6 0.06916 1388.7 0.24057 207.68 408.86 1.0278 1.7484 1.284 0.888 1.105 748 132.8 525.6 9.62 94.0 11.67 16.48 6
8 0.07538 1383.5 0.22180 210.25 410.32 1.0369 1.7485 1.288 0.895 1.106 740 133.0 511.0 9.69 93.4 11.79 16.22 8
10 0.08204 1378.3 0.20477 212.84 411.79 1.0461 1.7487 1.292 0.901 1.107 731 133.2 497.0 9.76 92.8 11.91 15.97 10
12 0.08917 1373.1 0.18929 215.43 413.25 1.0552 1.7489 1.296 0.908 1.108 723 133.4 483.5 9.82 92.2 12.04 15.71 12
14 0.09677 1367.9 0.17520 218.02 414.72 1.0642 1.7492 1.299 0.915 1.109 715 133.5 470.6 9.89 91.5 12.17 15.46 14
15.14b 0.10133 1364.9 0.16774 219.51 415.55 1.0694 1.7494 1.302 0.919 1.109 710 133.6 463.4 9.93 91.2 12.24 15.31 15.14
16 0.10488 1362.6 0.16236 220.63 416.18 1.0733 1.7496 1.303 0.922 1.110 707 133.7 458.1 9.96 90.9 12.30 15.20 16
18 0.11352 1357.3 0.15063 223.24 417.65 1.0822 1.7500 1.307 0.929 1.111 698 133.8 446.1 10.02 90.3 12.43 14.94 18
20 0.12270 1352.0 0.13992 225.86 419.12 1.0912 1.7504 1.312 0.936 1.112 690 133.9 434.5 10.09 89.7 12.56 14.69 20
22 0.13247 1346.6 0.13012 228.49 420.58 1.1001 1.7509 1.316 0.943 1.113 682 134.1 423.3 10.16 89.0 12.70 14.43 22
24 0.14283 1341.3 0.12113 231.13 422.04 1.1090 1.7515 1.320 0.950 1.114 674 134.1 412.5 10.22 88.4 12.84 14.17 24
26 0.15383 1335.8 0.11288 233.78 423.51 1.1178 1.7521 1.324 0.958 1.115 666 134.2 402.1 10.29 87.8 12.98 13.92 26
28 0.16547 1330.4 0.10530 236.44 424.97 1.1267 1.7527 1.329 0.965 1.117 657 134.3 392.0 10.36 87.2 13.12 13.66 28
30 0.17779 1324.9 0.09833 239.10 426.43 1.1355 1.7534 1.333 0.973 1.118 649 134.3 382.3 10.42 86.5 13.27 13.40 30
32 0.19081 1319.3 0.09191 241.78 427.89 1.1442 1.7541 1.338 0.980 1.120 641 134.4 372.8 10.49 85.9 13.42 13.15 32
34 0.20456 1313.7 0.08599 244.46 429.35 1.1529 1.7549 1.342 0.988 1.121 633 134.4 363.7 10.56 85.3 13.57 12.89 34
36 0.21907 1308.1 0.08053 247.15 430.81 1.1617 1.7557 1.347 0.996 1.123 625 134.4 354.8 10.62 84.6 13.72 12.63 36
38 0.23436 1302.4 0.07548 249.86 432.26 1.1703 1.7566 1.352 1.003 1.125 617 134.4 346.2 10.69 84.0 13.87 12.38 38
40 0.25046 1296.7 0.07080 252.57 433.71 1.1790 1.7574 1.357 1.011 1.126 609 134.3 337.9 10.76 83.4 14.02 12.12 40
42 0.26741 1291.0 0.06647 255.29 435.16 1.1876 1.7583 1.362 1.019 1.128 600 134.3 329.8 10.83 82.7 14.18 11.87 42
44 0.28522 1285.2 0.06246 258.03 436.61 1.1962 1.7593 1.367 1.028 1.130 592 134.2 321.9 10.89 82.1 14.34 11.61 44
46 0.30394 1279.3 0.05873 260.77 438.05 1.2048 1.7603 1.373 1.036 1.132 584 134.1 314.3 10.96 81.4 14.50 11.36 46
48 0.32358 1273.4 0.05527 263.52 439.49 1.2133 1.7613 1.378 1.044 1.135 576 134.0 306.9 11.03 80.8 14.66 11.10 48
50 0.34417 1267.4 0.05205 266.29 440.93 1.2219 1.7623 1.383 1.053 1.137 568 133.8 299.7 11.10 80.2 14.83 10.85 50
52 0.36576 1261.4 0.04905 269.07 442.36 1.2304 1.7633 1.389 1.061 1.139 560 133.7 292.6 11.17 79.5 15.00 10.60 52
54 0.38836 1255.3 0.04625 271.85 443.78 1.2389 1.7644 1.395 1.070 1.142 552 133.5 285.8 11.24 78.9 15.17 10.34 54
56 0.41201 1249.2 0.04365 274.65 445.21 1.2474 1.7655 1.401 1.079 1.145 544 133.3 279.1 11.32 78.2 15.34 10.09 56
58 0.43674 1243.0 0.04122 277.46 446.62 1.2558 1.7666 1.407 1.088 1.147 536 133.1 272.6 11.39 77.6 15.51 9.84 58
60 0.46259 1236.8 0.03894 280.29 448.04 1.2642 1.7678 1.413 1.098 1.150 527 132.8 266.2 11.46 76.9 15.69 9.59 60
62 0.48957 1230.4 0.03682 283.12 449.44 1.2727 1.7689 1.419 1.107 1.153 519 132.6 260.1 11.54 76.3 15.86 9.34 62
64 0.51773 1224.1 0.03482 285.97 450.84 1.2811 1.7701 1.426 1.117 1.157 511 132.3 254.0 11.61 75.6 16.04 9.09 64
66 0.54710 1217.6 0.03296 288.83 452.23 1.2894 1.7713 1.433 1.127 1.160 503 132.0 248.1 11.69 75.0 16.23 8.84 66
68 0.57771 1211.1 0.03121 291.70 453.62 1.2978 1.7724 1.439 1.137 1.164 495 131.6 242.3 11.77 74.4 16.41 8.59 68
70 0.60960 1204.4 0.02957 294.59 455.00 1.3062 1.7736 1.447 1.147 1.168 487 131.3 236.7 11.85 73.7 16.60 8.35 70
72 0.64279 1197.8 0.02803 297.49 456.36 1.3145 1.7748 1.454 1.158 1.172 479 130.9 231.2 11.93 73.1 16.79 8.10 72
74 0.67732 1191.0 0.02658 300.40 457.72 1.3229 1.7760 1.461 1.169 1.176 470 130.5 225.8 12.01 72.4 16.98 7.85 74
76 0.71323 1184.1 0.02521 303.33 459.08 1.3312 1.7773 1.469 1.180 1.181 462 130.0 220.5 12.10 71.8 17.18 7.61 76
78 0.75055 1177.2 0.02393 306.28 460.42 1.3395 1.7785 1.477 1.192 1.186 454 129.5 215.3 12.18 71.2 17.38 7.37 78
80 0.78931 1170.1 0.02272 309.24 461.75 1.3478 1.7797 1.486 1.204 1.191 446 129.0 210.2 12.27 70.5 17.58 7.13 80
82 0.82956 1163.0 0.02158 312.21 463.06 1.3561 1.7809 1.494 1.217 1.196 437 128.5 205.3 12.37 69.9 17.79 6.88 82
84 0.87132 1155.7 0.02050 315.20 464.37 1.3644 1.7821 1.503 1.230 1.202 429 127.9 200.4 12.46 69.3 18.00 6.65 84
86 0.91464 1148.4 0.01949 318.21 465.66 1.3727 1.7833 1.512 1.243 1.209 421 127.4 195.6 12.56 68.6 18.22 6.41 86
88 0.95955 1140.9 0.01853 321.24 466.94 1.3810 1.7845 1.522 1.257 1.215 412 126.7 190.9 12.66 68.0 18.44 6.17 88
90 1.0061 1133.3 0.01762 324.28 468.20 1.3893 1.7856 1.532 1.272 1.223 404 126.1 186.3 12.76 67.4 18.66 5.93 90
92 1.0543 1125.6 0.01676 327.34 469.45 1.3976 1.7868 1.543 1.287 1.230 396 125.4 181.8 12.87 66.7 18.89 5.70 92
94 1.1042 1117.7 0.01594 330.42 470.68 1.4059 1.7879 1.554 1.303 1.239 387 124.7 177.3 12.98 66.1 19.13 5.47 94
96 1.1559 1109.7 0.01517 333.52 471.89 1.4142 1.7890 1.565 1.320 1.247 379 123.9 172.9 13.10 65.5 19.38 5.24 96
98 1.2093 1101.6 0.01444 336.64 473.09 1.4225 1.7901 1.577 1.337 1.257 370 123.1 168.6 13.22 64.9 19.63 5.01 98
100 1.2646 1093.3 0.01374 339.78 474.26 1.4308 1.7912 1.590 1.356 1.267 362 122.3 164.3 13.35 64.3 19.89 4.78 100
105 1.4110 1071.8 0.01215 347.74 477.09 1.4516 1.7936 1.625 1.408 1.297 340 120.0 154.0 13.70 62.8 20.59 4.22 105
110 1.5698 1049.1 0.01074 355.85 479.74 1.4725 1.7959 1.667 1.469 1.335 319 117.4 143.9 14.09 61.3 21.36 3.68 110
115 1.7417 1025.0 0.00949 364.13 482.19 1.4936 1.7977 1.716 1.544 1.383 296 114.6 134.2 14.54 59.9 22.24 3.15 115
120 1.9275 999.2 0.00837 372.62 484.39 1.5148 1.7991 1.777 1.638 1.445 274 111.4 124.7 15.07 58.5 23.27 2.64 120
125 2.1280 971.2 0.00736 381.35 486.25 1.5364 1.7998 1.854 1.762 1.530 250 107.9 115.3 15.71 57.1 24.49 2.15 125
130 2.3442 940.4 0.00644 390.39 487.70 1.5584 1.7997 1.959 1.932 1.652 226 103.9 106.0 16.49 55.9 25.99 1.68 130
135 2.5773 905.8 0.00560 399.81 488.57 1.5810 1.7984 2.113 2.188 1.840 201 99.5 96.6 17.48 54.7 27.93 1.24 135
140 2.8287 865.6 0.00481 409.80 488.59 1.6046 1.7953 2.367 2.617 2.161 174 94.5 87.0 18.82 53.6 30.55 0.83 140
145 3.1003 815.9 0.00404 420.68 487.22 1.6300 1.7891 2.888 3.504 2.835 144 88.8 76.6 20.77 53.0 34.48 0.47 145
150 3.3946 744.6 0.00324 433.55 482.85 1.6597 1.7762 4.720 6.517 5.146 111 82.2 64.1 24.20 54.2 42.04 0.16 150
154.01c 3.6510 516.1 0.00194 460.34 460.34 1.7217 1.7217 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 154.01
aTemperatures on ITS-90 scale bNormal boiling point cCritical point

Fig.12Pressure-EnthalpyDiagramforRefrigerant404A
Pressure

Refrigerant 404A [R-125/143a/134a (44/52/4)] Properties of Liquid on Bubble Line and Vapor on Dew Line
Pres-
sure,
MPa
Temperature,*
°C
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Pres-
sure,
MPaBubble Dew Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor
0.005 –93.70 –92.50 1447.1 3.05794 81.16 311.61 0.4716 1.7532 1.220 0.640 1.163 998 132.9 764.9 7.32 122.5 6.15 17.78 0.005
0.006 –91.48 –90.32 1440.6 2.57690 83.85 312.92 0.4865 1.7450 1.218 0.646 1.162 980 133.6 727.8 7.41 121.2 6.28 17.58 0.006
0.007 –89.56 –88.42 1434.9 2.22992 86.19 314.06 0.4993 1.7382 1.216 0.651 1.161 966 134.1 697.9 7.48 120.1 6.40 17.40 0.007
0.008 –87.86 –86.74 1429.9 1.96748 88.26 315.07 0.5106 1.7324 1.215 0.655 1.161 953 134.6 673.0 7.55 119.2 6.50 17.24 0.008
0.009 –86.32 –85.22 1425.4 1.76182 90.13 315.99 0.5206 1.7273 1.214 0.660 1.160 942 135.0 651.7 7.61 118.3 6.60 17.09 0.009
0.01 –84.93 –83.84 1421.3 1.59620 91.83 316.83 0.5296 1.7229 1.214 0.663 1.160 933 135.4 633.3 7.66 117.5 6.68 16.96 0.01
0.02 –75.05 –74.08 1392.4 0.83425 103.81 322.78 0.5917 1.6953 1.215 0.691 1.159 870 137.9 523.7 8.04 112.2 7.31 16.00 0.02
0.04 –63.85 –62.97 1359.4 0.43619 117.48 329.58 0.6587 1.6707 1.225 0.725 1.159 807 140.4 431.3 8.47 106.4 8.05 14.85 0.04
0.06 –56.57 –55.75 1337.7 0.29837 126.44 334.00 0.7007 1.6578 1.234 0.749 1.161 770 141.7 383.8 8.74 102.8 8.55 14.08 0.06
0.08 –51.03 –50.25 1321.0 0.22779 133.31 337.36 0.7320 1.6494 1.243 0.767 1.163 742 142.6 352.7 8.95 100.1 8.93 13.48 0.08
0.1 –46.50 –45.74 1307.1 0.18467 138.97 340.08 0.7571 1.6434 1.251 0.784 1.166 719 143.2 329.8 9.12 98.0 9.25 12.98 0.1
0.10132b –46.22 –45.47 1306.3 0.18240 139.31 340.25 0.7586 1.6430 1.252 0.785 1.166 718 143.2 328.5 9.13 97.8 9.27 12.95 0.10132
0.12 –42.63 –41.90 1295.1 0.15551 143.83 342.40 0.7783 1.6387 1.259 0.798 1.169 700 143.6 311.9 9.26 96.2 9.53 12.55 0.12
0.14 –39.24 –38.53 1284.5 0.13443 148.12 344.41 0.7967 1.6349 1.266 0.811 1.171 684 143.9 297.3 9.39 94.6 9.78 12.17 0.14
0.16 –36.20 –35.51 1275.0 0.11846 151.97 346.20 0.8130 1.6318 1.273 0.823 1.174 669 144.1 285.0 9.50 93.2 10.01 11.82 0.16
0.18 –33.45 –32.78 1266.2 0.10592 155.49 347.81 0.8277 1.6292 1.279 0.834 1.177 656 144.2 274.4 9.60 91.9 10.21 11.51 0.18
0.2 –30.93 –30.27 1258.0 0.09581 158.73 349.28 0.8411 1.6270 1.285 0.844 1.179 644 144.3 265.1 9.69 90.8 10.40 11.21 0.2
0.22 –28.59 –27.94 1250.4 0.08748 161.75 350.63 0.8534 1.6250 1.291 0.855 1.182 633 144.3 256.9 9.78 89.7 10.58 10.94 0.22
0.24 –26.42 –25.78 1243.3 0.08049 164.57 351.88 0.8649 1.6233 1.297 0.864 1.185 623 144.4 249.5 9.86 88.7 10.75 10.69 0.24
0.26 –24.37 –23.75 1236.5 0.07454 167.23 353.04 0.8755 1.6217 1.303 0.873 1.188 613 144.3 242.8 9.94 87.8 10.91 10.45 0.26
0.28 –22.45 –21.83 1230.1 0.06941 169.75 354.13 0.8855 1.6203 1.308 0.882 1.190 604 144.3 236.7 10.01 87.0 11.06 10.22 0.28
0.3 –20.62 –20.02 1223.9 0.06494 172.14 355.15 0.8950 1.6190 1.313 0.891 1.193 595 144.2 231.1 10.08 86.2 11.21 10.01 0.3
0.32 –18.89 –18.29 1218.0 0.06101 174.43 356.12 0.9039 1.6179 1.319 0.899 1.196 587 144.1 225.9 10.15 85.4 11.34 9.81 0.32
0.34 –17.24 –16.65 1212.4 0.05752 176.61 357.03 0.9125 1.6168 1.324 0.907 1.199 579 144.0 221.1 10.21 84.7 11.48 9.61 0.34
0.36 –15.66 –15.08 1206.9 0.05441 178.71 357.90 0.9206 1.6158 1.329 0.915 1.202 572 143.9 216.6 10.27 84.0 11.61 9.42 0.36
0.38 –14.15 –13.57 1201.6 0.05162 180.73 358.72 0.9283 1.6149 1.334 0.923 1.205 565 143.8 212.4 10.33 83.3 11.73 9.24 0.38
0.4 –12.69 –12.12 1196.5 0.04909 182.68 359.51 0.9358 1.6141 1.339 0.931 1.208 558 143.7 208.4 10.39 82.7 11.85 9.07 0.4
0.42 –11.29 –10.73 1191.6 0.04680 184.56 360.26 0.9429 1.6133 1.344 0.938 1.211 551 143.5 204.7 10.44 82.1 11.97 8.90 0.42
0.44 –9.94 –9.39 1186.7 0.04471 186.38 360.98 0.9498 1.6125 1.349 0.946 1.214 545 143.4 201.2 10.49 81.5 12.08 8.74 0.44
0.46 –8.64 –8.09 1182.0 0.04279 188.15 361.67 0.9564 1.6118 1.353 0.953 1.217 538 143.2 197.8 10.55 81.0 12.19 8.58 0.46
0.48 –7.37 –6.83 1177.5 0.04103 189.86 362.33 0.9628 1.6112 1.358 0.960 1.220 532 143.0 194.6 10.60 80.4 12.30 8.43 0.48
0.5 –6.15 –5.61 1173.0 0.03940 191.53 362.96 0.9690 1.6105 1.363 0.967 1.223 527 142.8 191.6 10.65 79.9 12.41 8.28 0.5
0.55 –3.24 –2.72 1162.3 0.03584 195.51 364.45 0.9837 1.6091 1.374 0.984 1.231 513 142.4 184.6 10.77 78.7 12.66 7.93 0.55
0.6 –0.53 –0.02 1152.0 0.03284 199.26 365.81 0.9973 1.6078 1.386 1.001 1.239 500 141.9 178.2 10.88 77.5 12.91 7.61 0.6
0.65 2.02 2.52 1142.3 0.03029 202.81 367.06 1.0101 1.6066 1.397 1.018 1.247 488 141.3 172.5 10.99 76.5 13.16 7.30 0.65
0.7 4.42 4.91 1132.9 0.02809 206.18 368.21 1.0222 1.6055 1.409 1.034 1.256 476 140.8 167.2 11.10 75.5 13.41 7.01 0.7
0.75 6.70 7.18 1123.8 0.02618 209.41 369.28 1.0336 1.6044 1.420 1.051 1.264 465 140.2 162.4 11.20 74.5 13.65 6.74 0.75
0.8 8.87 9.34 1115.1 0.02449 212.49 370.27 1.0444 1.6035 1.432 1.067 1.274 455 139.6 157.9 11.30 73.6 13.89 6.48 0.8
0.85 10.94 11.40 1106.5 0.02300 215.46 371.19 1.0547 1.6025 1.443 1.084 1.283 445 139.0 153.6 11.40 72.8 14.12 6.23 0.85
0.9 12.92 13.37 1098.2 0.02166 218.32 372.05 1.0646 1.6016 1.455 1.100 1.293 435 138.3 149.7 11.50 72.0 14.35 5.99 0.9
0.95 14.81 15.26 1090.2 0.02046 221.09 372.85 1.0741 1.6007 1.466 1.117 1.303 426 137.7 146.0 11.59 71.2 14.59 5.76 0.95
1.0 16.64 17.08 1082.2 0.01937 223.77 373.59 1.0832 1.5999 1.478 1.134 1.313 417 137.1 142.5 11.69 70.4 14.82 5.54 1.0
1.1 20.09 20.52 1066.9 0.01749 228.89 374.94 1.1005 1.5982 1.503 1.169 1.336 400 135.7 136.1 11.88 69.0 15.29 5.13 1.1
1.2 23.32 23.73 1052.0 0.01590 233.75 376.12 1.1166 1.5965 1.528 1.206 1.360 384 134.4 130.2 12.07 67.7 15.76 4.75 1.2
1.3 26.35 26.75 1037.5 0.01455 238.37 377.14 1.1318 1.5949 1.554 1.244 1.386 368 133.0 124.9 12.26 66.5 16.23 4.39 1.3
1.4 29.22 29.60 1023.4 0.01338 242.81 378.02 1.1462 1.5932 1.582 1.285 1.414 354 131.6 119.9 12.45 65.3 16.71 4.06 1.4
1.5 31.93 32.30 1009.5 0.01236 247.07 378.78 1.1599 1.5914 1.611 1.329 1.445 340 130.1 115.3 12.65 64.2 17.21 3.75 1.5
1.6 34.51 34.87 995.7 0.01146 251.19 379.42 1.1730 1.5896 1.643 1.376 1.478 327 128.7 111.0 12.84 63.1 17.72 3.45 1.6
1.7 36.97 37.32 982.1 0.01066 255.17 379.95 1.1856 1.5878 1.676 1.426 1.515 314 127.2 107.0 13.05 62.1 18.24 3.17 1.7
1.8 39.33 39.67 968.6 0.00994 259.05 380.38 1.1977 1.5858 1.712 1.481 1.556 301 125.7 103.2 13.25 61.2 18.80 2.91 1.8
1.9 41.58 41.91 955.1 0.00930 262.83 380.70 1.2095 1.5838 1.751 1.541 1.601 289 124.1 99.5 13.47 60.2 19.37 2.66 1.9
2.0 43.75 44.07 941.6 0.00871 266.52 380.92 1.2208 1.5817 1.794 1.607 1.652 277 122.6 96.1 13.70 59.3 19.98 2.43 2.0
2.1 45.84 46.15 928.1 0.00817 270.14 381.05 1.2319 1.5794 1.841 1.681 1.709 266 121.0 92.7 13.93 58.5 20.62 2.21 2.1
2.2 47.85 48.15 914.4 0.00768 273.70 381.08 1.2427 1.5770 1.893 1.763 1.774 254 119.4 89.5 14.18 57.6 21.31 2.00 2.2
2.3 49.80 50.08 900.6 0.00723 277.20 381.01 1.2532 1.5745 1.952 1.856 1.847 243 117.8 86.5 14.44 56.8 22.04 1.80 2.3
2.4 51.68 51.95 886.5 0.00680 280.66 380.83 1.2635 1.5718 2.019 1.962 1.932 232 116.2 83.5 14.72 56.0 22.83 1.61 2.4
2.5 53.50 53.76 872.2 0.00641 284.09 380.55 1.2737 1.5689 2.095 2.085 2.032 222 114.5 80.5 15.02 55.3 23.69 1.43 2.5
2.6 55.26 55.51 857.5 0.00604 287.50 380.15 1.2837 1.5658 2.183 2.229 2.149 211 112.9 77.7 15.34 54.5 24.62 1.26 2.6
2.7 56.97 57.21 842.4 0.00569 290.89 379.62 1.2937 1.5624 2.288 2.401 2.289 200 111.2 74.9 15.69 53.8 25.65 1.10 2.7
2.8 58.63 58.86 826.8 0.00536 294.29 378.96 1.3036 1.5587 2.414 2.609 2.459 190 109.5 72.1 16.07 53.2 26.79 0.94 2.8
2.9 60.24 60.46 810.5 0.00505 297.70 378.14 1.3135 1.5547 2.569 2.868 2.672 179 107.7 69.3 16.49 52.6 28.06 0.80 2.9
3.0 61.81 62.01 793.4 0.00475 301.15 377.15 1.3234 1.5503 2.765 3.197 2.944 169 106.0 66.5 16.95 52.0 29.51 0.67 3.0
3.2 64.82 64.99 755.6 0.00417 308.25 374.49 1.3438 1.5397 3.381 4.233 3.797 148 102.3 60.9 18.09 51.2 33.17 0.43 3.2
3.4 67.67 67.81 709.8 0.00361 315.97 370.45 1.3657 1.5255 4.771 6.536 5.689 126 98.5 54.7 19.68 51.3 38.73 0.23 3.4
3.729c 72.05 72.05 486.5 0.00206 343.92 343.92 1.4455 1.4455 — — — — — — — — — 0.00 3.729
*Temperatures on ITS-90 scale bBubble and dew points at one standard atmosphere cCritical point

Fig.13Pressure-EnthalpyDiagramforRefrigerant407C
Pressure

Refrigerant 407C [R-32/125/134a (23/25/52)] Properties of Liquid on Bubble Line and Vapor on Dew Line
Pres-
sure,
MPa
Temperature,*
°C
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal
Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Pres-
sure,
0.01 –82.45 –74.81 1495.5 1.89703 90.48 366.78 0.5259 1.9471 1.281 0.668 1.182 1008 149.1 779.8 8.43 151.5 6.94 24.75 0.01
0.02 –72.50 –65.02 1466.7 0.99017 103.24 372.75 0.5910 1.9104 1.283 0.694 1.181 953 151.8 632.8 8.83 145.4 7.52 22.93 0.02
0.04 –61.25 –53.95 1433.7 0.51705 117.72 379.47 0.6612 1.8761 1.291 0.727 1.182 893 154.6 513.1 9.28 138.5 8.19 20.91 0.04
0.06 –53.96 –46.79 1412.0 0.35346 127.17 383.77 0.7050 1.8573 1.299 0.750 1.184 856 156.1 453.1 9.57 134.1 8.64 19.62 0.06
0.08 –48.42 –41.34 1395.3 0.26975 134.39 386.99 0.7374 1.8445 1.306 0.769 1.187 828 157.1 414.4 9.79 130.7 8.99 18.65 0.08
0.1 –43.90 –36.90 1381.5 0.21865 140.31 389.59 0.7635 1.8349 1.312 0.786 1.190 806 157.8 386.2 9.97 128.1 9.28 17.87 0.1
0.10132b –43.63 –36.63 1380.7 0.21595 140.67 389.75 0.7650 1.8343 1.312 0.787 1.190 804 157.8 384.6 9.98 127.9 9.29 17.82 0.10132
0.12 –40.05 –33.11 1369.7 0.18411 145.39 391.78 0.7854 1.8273 1.318 0.800 1.193 787 158.3 364.3 10.12 125.8 9.52 17.21 0.12
0.14 –36.67 –29.79 1359.1 0.15916 149.86 393.68 0.8043 1.8210 1.324 0.813 1.196 770 158.7 346.6 10.25 123.8 9.75 16.63 0.14
0.16 –33.65 –26.83 1349.7 0.14025 153.86 395.36 0.8211 1.8156 1.329 0.825 1.199 755 159.0 331.8 10.37 122.0 9.94 16.12 0.16
0.18 –30.92 –24.15 1341.0 0.12542 157.51 396.86 0.8362 1.8110 1.334 0.837 1.201 742 159.3 319.1 10.48 120.4 10.13 15.66 0.18
0.2 –28.41 –21.69 1333.0 0.11347 160.87 398.22 0.8499 1.8069 1.339 0.848 1.204 730 159.5 308.0 10.57 119.0 10.29 15.24 0.2
0.22 –26.09 –19.41 1325.5 0.10362 163.99 399.47 0.8625 1.8033 1.344 0.858 1.207 719 159.6 298.2 10.66 117.6 10.45 14.86 0.22
0.24 –23.93 –17.29 1318.4 0.09536 166.91 400.62 0.8742 1.8000 1.349 0.868 1.210 708 159.7 289.5 10.75 116.4 10.60 14.50 0.24
0.26 –21.90 –15.31 1311.8 0.08833 169.65 401.69 0.8851 1.7970 1.354 0.877 1.213 698 159.8 281.6 10.83 115.2 10.74 14.16 0.26
0.28 –19.99 –13.43 1305.5 0.08227 172.24 402.69 0.8954 1.7942 1.358 0.886 1.216 689 159.8 274.4 10.90 114.2 10.87 13.85 0.28
0.3 –18.19 –11.66 1299.5 0.07699 174.71 403.62 0.9050 1.7917 1.362 0.895 1.219 680 159.8 267.8 10.97 113.1 10.99 13.56 0.3
0.32 –16.47 –9.98 1293.7 0.07235 177.06 404.49 0.9141 1.7894 1.367 0.903 1.222 672 159.8 261.8 11.04 112.2 11.11 13.28 0.32
0.34 –14.83 –8.38 1288.2 0.06824 179.30 405.32 0.9228 1.7872 1.371 0.911 1.224 664 159.8 256.1 11.11 111.2 11.23 13.01 0.34
0.36 –13.27 –6.85 1282.9 0.06457 181.45 406.10 0.9310 1.7851 1.375 0.919 1.227 656 159.8 250.9 11.17 110.4 11.35 12.76 0.36
0.38 –11.77 –5.38 1277.8 0.06127 183.52 406.85 0.9389 1.7832 1.379 0.927 1.230 649 159.7 246.0 11.23 109.5 11.46 12.52 0.38
0.4 –10.33 –3.97 1272.8 0.05830 185.52 407.55 0.9465 1.7814 1.383 0.934 1.233 642 159.7 241.4 11.28 108.7 11.57 12.29 0.4
0.42 –8.94 –2.61 1268.0 0.05559 187.44 408.23 0.9537 1.7796 1.387 0.942 1.236 635 159.6 237.1 11.34 107.9 11.68 12.07 0.42
0.44 –7.61 –1.31 1263.4 0.05313 189.30 408.87 0.9607 1.7780 1.391 0.949 1.239 629 159.5 233.0 11.39 107.2 11.78 11.85 0.44
0.46 –6.31 –0.04 1258.8 0.05087 191.11 409.48 0.9674 1.7764 1.395 0.956 1.242 622 159.4 229.1 11.45 106.5 11.88 11.65 0.46
0.48 –5.06 1.18 1254.4 0.04879 192.86 410.07 0.9739 1.7750 1.399 0.963 1.245 616 159.3 225.4 11.50 105.8 11.98 11.45 0.48
0.5 –3.85 2.36 1250.1 0.04687 194.56 410.64 0.9801 1.7735 1.403 0.970 1.248 610 159.2 221.9 11.54 105.1 12.08 11.26 0.5
0.55 –0.98 5.17 1239.8 0.04267 198.61 411.95 0.9950 1.7702 1.413 0.987 1.255 596 158.9 213.9 11.66 103.5 12.31 10.81 0.55
0.6 1.70 7.79 1230.0 0.03915 202.42 413.15 1.0087 1.7672 1.422 1.004 1.262 583 158.6 206.7 11.77 102.1 12.54 10.40 0.6
0.65 4.22 10.24 1220.7 0.03615 206.02 414.25 1.0216 1.7644 1.432 1.020 1.270 571 158.2 200.1 11.88 100.7 12.75 10.01 0.65
0.7 6.60 12.56 1211.7 0.03356 209.44 415.25 1.0338 1.7618 1.441 1.036 1.278 559 157.8 194.1 11.98 99.4 12.96 9.64 0.7
0.75 8.85 14.76 1203.1 0.03131 212.71 416.18 1.0452 1.7594 1.451 1.052 1.286 548 157.4 188.6 12.08 98.2 13.17 9.30 0.75
0.8 11.00 16.85 1194.9 0.02933 215.83 417.03 1.0561 1.7571 1.460 1.067 1.294 537 157.0 183.6 12.17 97.1 13.37 8.98 0.8
0.85 13.04 18.84 1186.8 0.02757 218.83 417.83 1.0665 1.7550 1.469 1.082 1.302 527 156.6 178.8 12.26 96.0 13.58 8.67 0.85
0.9 15.00 20.74 1179.1 0.02600 221.71 418.57 1.0764 1.7529 1.479 1.098 1.310 518 156.1 174.4 12.35 94.9 13.78 8.38 0.9
0.95 16.88 22.56 1171.5 0.02460 224.50 419.25 1.0859 1.7509 1.488 1.113 1.319 508 155.6 170.3 12.44 93.9 13.98 8.11 0.95
1.0 18.69 24.32 1164.1 0.02332 227.19 419.89 1.0950 1.7491 1.498 1.128 1.327 499 155.2 166.4 12.52 93.0 14.18 7.84 1.0
1.1 22.11 27.63 1149.9 0.02111 232.34 421.03 1.1122 1.7455 1.517 1.159 1.346 482 154.2 159.2 12.68 91.1 14.59 7.35 1.1
1.2 25.30 30.73 1136.2 0.01926 237.20 422.03 1.1283 1.7421 1.537 1.190 1.365 466 153.2 152.8 12.84 89.5 14.99 6.89 1.2
1.3 28.30 33.63 1123.0 0.01768 241.82 422.89 1.1434 1.7389 1.557 1.222 1.385 451 152.1 146.9 13.01 87.9 15.39 6.47 1.3
1.4 31.14 36.37 1110.2 0.01631 246.24 423.63 1.1577 1.7358 1.578 1.255 1.406 436 151.0 141.5 13.15 86.4 15.80 6.07 1.4
1.5 33.83 38.97 1097.7 0.01512 250.48 424.27 1.1713 1.7328 1.600 1.289 1.428 423 150.0 136.5 13.31 85.0 16.22 5.70 1.5
1.6 36.39 41.43 1085.5 0.01408 254.57 424.80 1.1843 1.7298 1.622 1.324 1.452 409 148.8 131.8 13.47 83.7 16.64 5.35 1.6
1.7 38.84 43.78 1073.5 0.01315 258.51 425.25 1.1967 1.7269 1.645 1.361 1.477 397 147.7 127.5 13.62 82.4 17.07 5.02 1.7
1.8 41.18 46.03 1061.7 0.01231 262.33 425.61 1.2086 1.7241 1.669 1.400 1.504 385 146.6 123.4 13.78 81.2 17.52 4.71 1.8
1.9 43.43 48.18 1050.0 0.01157 266.05 425.89 1.2200 1.7212 1.695 1.440 1.533 373 145.4 119.6 13.94 80.1 17.98 4.42 1.9
2.0 45.59 50.25 1038.5 0.01089 269.66 426.10 1.2311 1.7184 1.722 1.483 1.564 361 144.2 115.9 14.10 78.9 18.45 4.14 2.0
2.1 47.67 52.24 1027.1 0.01027 273.19 426.23 1.2418 1.7155 1.750 1.529 1.597 350 143.0 112.5 14.27 77.9 18.94 3.87 2.1
2.2 49.68 54.15 1015.7 0.00971 276.64 426.29 1.2522 1.7126 1.780 1.577 1.633 339 141.8 109.2 14.44 76.8 19.45 3.62 2.2
2.3 51.63 56.00 1004.4 0.00919 280.02 426.28 1.2624 1.7097 1.813 1.629 1.671 329 140.6 106.0 14.62 75.8 19.98 3.38 2.3
2.4 53.51 57.79 993.1 0.00871 283.34 426.20 1.2723 1.7068 1.847 1.684 1.713 318 139.4 103.0 14.79 74.9 20.54 3.15 2.4
2.5 55.34 59.51 981.8 0.00827 286.60 426.06 1.2819 1.7038 1.884 1.744 1.758 308 138.2 100.0 14.98 73.9 21.12 2.93 2.5
2.6 57.11 61.19 970.5 0.00786 289.82 425.85 1.2914 1.7007 1.924 1.810 1.808 298 136.9 97.2 15.17 73.0 21.73 2.72 2.6
2.7 58.83 62.81 959.0 0.00747 292.99 425.57 1.3006 1.6976 1.968 1.881 1.863 288 135.6 94.5 15.37 72.1 22.38 2.52 2.7
2.8 60.51 64.38 947.5 0.00711 296.12 425.21 1.3097 1.6944 2.016 1.958 1.923 279 134.4 91.9 15.58 71.3 23.06 2.33 2.8
2.9 62.14 65.91 935.9 0.00677 299.23 424.79 1.3187 1.6911 2.069 2.044 1.990 269 133.1 89.3 15.80 70.4 23.79 2.14 2.9
3.0 63.73 67.40 924.1 0.00645 302.31 424.29 1.3276 1.6877 2.128 2.139 2.065 259 131.7 86.8 16.03 69.6 24.56 1.96 3.0
3.2 66.80 70.25 899.9 0.00587 308.43 423.06 1.3450 1.6805 2.268 2.365 2.243 240 129.1 81.9 16.53 68.1 26.26 1.63 3.2
3.4 69.73 72.94 874.6 0.00533 314.54 421.46 1.3622 1.6726 2.451 2.657 2.475 222 126.4 77.1 17.09 66.6 28.22 1.33 3.4
3.6 72.53 75.50 847.6 0.00484 320.71 419.45 1.3795 1.6639 2.701 3.050 2.789 203 123.6 72.5 17.75 65.2 30.54 1.05 3.6
3.8 75.22 77.92 818.1 0.00439 327.02 416.91 1.3970 1.6540 3.065 3.613 3.239 184 120.7 67.7 18.52 64.0 33.33 0.79 3.8
4.0 77.82 80.21 785.1 0.00395 333.64 413.66 1.4152 1.6424 3.647 4.486 3.935 165 117.7 62.9 19.48 63.1 36.86 0.56 4.0
4.2 80.32 82.37 746.0 0.00352 340.83 409.34 1.4348 1.6281 4.726 6.029 5.159 146 114.6 57.6 20.75 62.7 41.59 0.36 4.2
4.63c 86.03 86.03 484.2 0.00207 378.48 378.48 1.5384 1.5384 — — — — — — — — — 0.00 4.63

Pressure

Refrigerant 410A [R-32/125 (50/50)] Properties of Liquid on Bubble Line and Vapor on Dew Line
Pres-
sure,
MPa
Temperature,*
°C
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Pres-
sure,
0.01 –88.23 –88.14 1460.6 2.09888 76.56 378.76 0.4588 2.0927 1.344 0.668 1.227 1004 159.7 669.9 8.29 177.3 7.44 24.72 0.01
0.02 –78.79 –78.70 1432.9 1.09659 89.26 384.25 0.5258 2.0432 1.345 0.696 1.228 958 162.8 552.9 8.71 170.8 7.79 22.91 0.02
0.04 –68.12 –68.04 1401.1 0.57309 103.64 390.29 0.5978 1.9956 1.351 0.734 1.231 906 165.8 454.8 9.17 163.3 8.21 20.90 0.04
0.06 –61.22 –61.14 1380.0 0.39193 113.00 394.10 0.6426 1.9687 1.358 0.762 1.235 872 167.5 404.6 9.47 158.3 8.50 19.62 0.06
0.08 –55.98 –55.90 1363.9 0.29918 120.14 396.92 0.6758 1.9500 1.364 0.785 1.239 847 168.7 371.8 9.70 154.6 8.73 18.66 0.08
0.1 –51.70 –51.62 1350.5 0.24256 125.99 399.17 0.7024 1.9358 1.369 0.805 1.243 826 169.5 347.8 9.88 151.5 8.93 17.88 0.1
0.10132b –51.44 –51.36 1349.7 0.23957 126.34 399.31 0.7040 1.9350 1.370 0.807 1.244 824 169.5 346.4 9.90 151.3 8.94 17.84 0.10132
0.12 –48.06 –47.98 1339.0 0.20427 130.99 401.05 0.7247 1.9243 1.375 0.823 1.247 808 170.1 329.0 10.04 148.9 9.11 17.23 0.12
0.14 –44.87 –44.79 1328.8 0.17661 135.39 402.67 0.7441 1.9147 1.380 0.839 1.251 792 170.6 313.8 10.18 146.6 9.26 16.65 0.14
0.16 –42.02 –41.94 1319.6 0.15565 139.34 404.09 0.7612 1.9065 1.385 0.854 1.255 778 170.9 300.9 10.30 144.6 9.40 16.15 0.16
0.18 –39.44 –39.36 1311.2 0.13921 142.93 405.36 0.7766 1.8993 1.390 0.868 1.259 765 171.2 289.9 10.41 142.8 9.53 15.69 0.18
0.2 –37.07 –36.99 1303.4 0.12595 146.23 406.50 0.7905 1.8928 1.395 0.881 1.263 753 171.5 280.3 10.51 141.1 9.66 15.27 0.2
0.22 –34.89 –34.80 1296.2 0.11503 149.29 407.53 0.8034 1.8871 1.399 0.893 1.266 743 171.6 271.8 10.61 139.5 9.77 14.89 0.22
0.24 –32.85 –32.76 1289.4 0.10587 152.15 408.49 0.8153 1.8818 1.404 0.904 1.270 732 171.8 264.2 10.70 138.1 9.88 14.54 0.24
0.26 –30.94 –30.85 1283.0 0.09807 154.84 409.36 0.8264 1.8770 1.408 0.916 1.274 723 171.9 257.2 10.78 136.7 9.98 14.21 0.26
0.28 –29.14 –29.05 1276.9 0.09135 157.38 410.18 0.8368 1.8726 1.413 0.926 1.277 714 172.0 251.0 10.86 135.5 10.08 13.90 0.28
0.3 –27.44 –27.35 1271.1 0.08550 159.80 410.94 0.8466 1.8685 1.417 0.936 1.281 705 172.0 245.2 10.93 134.3 10.18 13.60 0.30
0.32 –25.82 –25.73 1265.5 0.08035 162.10 411.65 0.8558 1.8647 1.421 0.946 1.285 697 172.0 239.8 11.00 133.10 10.27 13.33 0.32
0.34 –24.28 –24.19 1260.2 0.07579 164.29 412.32 0.8646 1.8611 1.426 0.956 1.288 689 172.1 234.9 11.07 132.10 10.36 13.06 0.34
0.36 –22.81 –22.72 1255.0 0.07172 166.40 412.95 0.8703 1.8577 1.430 0.965 1.292 682 172.1 230.3 11.13 131.00 10.46 12.81 0.36
0.38 –21.40 –21.31 1250.1 0.06806 168.43 413.54 0.8810 1.8545 1.434 0.975 1.295 675 172.0 226.0 11.19 130.10 10.55 12.57 0.38
0.4 –20.04 –19.95 1245.3 0.06476 170.38 414.10 0.8887 1.8514 1.438 0.983 1.299 668 172.0 221.9 11.25 129.10 10.64 12.35 0.40
0.42 –18.74 –18.65 1240.6 0.06176 172.26 414.64 0.8960 1.8486 1.443 0.992 1.303 661 172.0 218.1 11.31 128.20 10.73 12.13 0.42
0.44 –17.48 –17.39 1236.1 0.05902 174.08 415.14 0.9031 1.8458 1.447 1.001 1.306 655 171.9 214.5 11.36 127.30 10.82 11.92 0.44
0.46 –16.27 –16.18 1231.8 0.05652 175.84 415.63 0.9099 1.8432 1.451 1.009 1.310 649 171.8 211.1 11.42 126.50 10.91 11.71 0.46
0.48 –15.10 –15.00 1227.5 0.05421 177.55 416.09 0.9165 1.8407 1.455 1.017 1.313 643 171.8 207.8 11.47 125.70 10.99 11.52 0.48
0.5 –13.96 –13.86 1223.3 0.05209 179.21 416.53 0.9228 1.8383 1.459 1.025 1.317 637 171.7 204.7 11.52 124.90 11.08 11.33 0.50
0.55 –11.26 –11.16 1213.4 0.04743 183.17 417.54 0.9379 1.8326 1.469 1.045 1.326 623 171.4 197.6 11.64 123.10 11.28 10.89 0.55
0.6 –8.74 –8.64 1203.9 0.04352 186.89 418.46 0.9518 1.8275 1.479 1.064 1.335 610 171.2 191.2 11.75 121.40 11.48 10.47 0.60
0.65 –6.38 –6.28 1194.9 0.04019 190.40 419.28 0.9649 1.8227 1.489 1.083 1.344 597 170.9 185.3 11.86 119.70 11.68 10.09 0.65
0.7 –4.15 –4.05 1186.3 0.03732 193.74 420.03 0.9772 1.8183 1.499 1.101 1.354 586 170.5 180.0 11.96 118.20 11.88 9.73 0.70
0.75 –2.04 –1.93 1178.1 0.03482 196.92 420.71 0.9888 1.8141 1.509 1.119 1.363 574 170.2 175.1 12.06 116.80 12.07 9.39 0.75
0.8 –0.03 0.08 1170.1 0.03262 199.96 421.33 0.9998 1.8102 1.519 1.136 1.373 564 169.8 170.6 12.15 115.50 12.26 9.07 0.80
0.85 1.89 1.99 1162.4 0.03068 202.88 421.89 1.0103 1.8065 1.529 1.154 1.382 554 169.4 166.4 12.24 114.20 12.45 8.77 0.85
0.9 3.72 3.83 1154.9 0.02894 205.69 422.41 1.0204 1.8030 1.540 1.171 1.392 544 169.0 162.4 12.33 113.00 12.64 8.48 0.90
0.95 5.48 5.58 1147.6 0.02738 208.40 422.88 1.0300 1.7996 1.550 1.188 1.402 535 168.6 158.7 12.41 111.80 12.82 8.21 0.95
1.0 7.17 7.27 1140.5 0.02596 211.02 423.31 1.0392 1.7964 1.560 1.205 1.413 525 168.1 155.3 12.49 110.70 13.01 7.95 1.00
1.1 10.36 10.47 1126.8 0.02351 216.03 424.07 1.0567 1.7903 1.581 1.239 1.434 508 167.2 148.8 12.65 108.60 13.39 7.46 1.10
1.2 13.34 13.46 1113.7 0.02145 220.76 424.68 1.0730 1.7846 1.603 1.274 1.457 492 166.3 143.1 12.81 106.70 13.79 7.01 1.20
1.3 16.15 16.26 1101.0 0.01970 225.26 425.19 1.0883 1.7792 1.624 1.31 1.481 477 165.4 137.8 12.95 104.80 14.19 6.59 1.30
1.4 18.79 18.91 1088.8 0.01819 229.56 425.59 1.1027 1.7741 1.647 1.347 1.506 462 164.4 133.0 13.12 103.10 14.60 6.20 1.40
1.5 21.30 21.41 1076.9 0.01687 233.68 425.89 1.1165 1.7691 1.670 1.385 1.532 448 163.4 128.5 13.23 101.50 15.03 5.83 1.50
1.6 23.68 23.80 1065.2 0.01571 237.65 426.11 1.1296 1.7644 1.694 1.424 1.560 435 162.4 124.3 13.38 99.98 15.46 5.49 1.60
1.7 25.96 26.07 1053.8 0.01468 241.48 426.25 1.1421 1.7597 1.719 1.465 1.590 422 161.4 120.4 13.52 98.53 15.91 5.16 1.70
1.8 28.13 28.25 1042.6 0.01376 245.19 426.31 1.1542 1.7552 1.745 1.509 1.621 410 160.3 116.8 13.66 97.15 16.38 4.86 1.80
1.9 30.22 30.34 1031.6 0.01293 248.79 426.31 1.1657 1.7508 1.772 1.555 1.655 398 159.3 113.3 13.81 95.82 16.86 4.57 1.90
2.0 32.22 32.34 1020.7 0.01218 252.29 426.24 1.1769 1.7464 1.800 1.603 1.690 386 158.2 110.1 13.95 94.56 17.36 4.29 2.00
2.1 34.16 34.28 1009.9 0.0115 255.71 426.10 1.1878 1.7421 1.830 1.655 1.728 375 157.1 107.0 14.10 93.34 17.88 4.03 2.10
2.2 36.02 36.14 999.2 0.01088 259.05 425.90 1.1983 1.7379 1.861 1.709 1.769 364 156.0 104.0 14.25 92.17 18.42 3.78 2.20
2.3 37.82 37.94 988.6 0.01031 262.32 425.64 1.2085 1.7336 1.894 1.768 1.813 353 154.9 101.2 14.40 91.05 18.99 3.54 2.30
2.4 39.56 39.68 978.0 0.00978 265.52 425.33 1.2185 1.7294 1.929 1.831 1.860 343 153.8 98.5 14.55 89.96 19.58 3.31 2.40
2.5 41.25 41.37 967.5 0.00929 268.67 424.95 1.2282 1.7251 1.967 1.898 1.911 332 152.6 95.9 14.71 88.91 20.21 3.10 2.50
2.6 42.89 43.00 957.0 0.00883 271.77 424.51 1.2377 1.7209 2.008 1.971 1.966 322 151.5 93.4 14.87 87.89 20.87 2.89 2.60
2.7 44.48 44.59 946.4 0.00841 274.82 424.02 1.2470 1.7166 2.052 2.050 2.026 313 150.3 91.0 15.03 86.91 21.56 2.69 2.70
2.8 46.02 46.14 935.8 0.00802 277.84 423.47 1.2561 1.7123 2.100 2.136 2.091 303 149.1 88.6 15.21 85.96 22.29 2.50 2.80
2.9 47.53 47.64 925.2 0.00764 280.82 422.85 1.2651 1.7079 2.153 2.230 2.163 293 147.9 86.3 15.38 85.04 23.07 2.31 2.90
3.0 48.99 49.10 914.5 0.00729 283.78 422.18 1.2740 1.7035 2.211 2.333 2.243 284 146.7 84.1 15.57 84.14 23.89 2.14 3.00
3.2 51.81 51.91 892.6 0.00665 289.62 420.62 1.2913 1.6944 2.348 2.575 2.429 265 144.2 79.9 15.96 82.42 25.70 1.81 3.20
3.4 54.49 54.59 870.0 0.00607 295.43 418.78 1.3085 1.6849 2.522 2.879 2.663 247 141.7 75.7 16.39 80.81 27.77 1.50 3.40
3.6 57.05 57.15 846.3 0.00555 301.26 416.60 1.3254 1.6747 2.752 3.276 2.970 229 139.0 71.7 16.87 79.29 30.17 1.22 3.60
3.8 59.50 59.59 821.0 0.00506 307.16 414.03 1.3425 1.6638 3.070 3.815 3.386 210 136.3 67.7 17.43 77.90 33.02 0.97 3.80
4.0 61.85 61.93 793.5 0.00460 313.24 410.97 1.3600 1.6517 3.541 4.596 3.987 192 133.4 63.7 18.08 76.68 36.48 0.74 4.00
4.2 64.10 64.17 762.6 0.00417 319.65 407.24 1.3783 1.6380 4.306 5.826 4.929 173 130.4 59.4 18.87 75.77 40.86 0.53 4.20
4.903c 71.36 71.36 459.5 0.00218 368.55 368.55 1.5181 1.5181 — — — — — — — — — 0.00 4.903

Pressure

Refrigerant 507A [R-125/143a (50/50)] Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,**
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–100 0.00295 1476.9 4.92920 74.41 303.90 0.4323 1.7579 1.219 0.618 1.164 1046 129.6 — — 124.6 5.77 18.35 –100
–95 0.00458 1461.7 3.25360 80.48 306.85 0.4669 1.7377 1.210 0.631 1.162 1000 131.2 784.2 7.29 121.7 6.06 17.88 –95
–90 0.00693 1446.8 2.20850 86.51 309.83 0.5003 1.7197 1.205 0.644 1.161 960 132.6 701.5 7.49 118.8 6.36 17.41 –90
–85 0.01019 1431.9 1.53750 92.53 312.83 0.5327 1.7036 1.203 0.658 1.159 925 134.0 631.9 7.68 116.1 6.67 16.92 –85
–80 0.01464 1417.1 1.09510 98.54 315.85 0.5642 1.6893 1.203 0.672 1.159 892 135.4 572.7 7.88 113.4 6.99 16.43 –80
–75 0.02058 1402.3 0.79638 104.57 318.88 0.5950 1.6766 1.205 0.686 1.158 862 136.6 521.7 8.07 110.8 7.31 15.92 –75
–70 0.02836 1387.4 0.59012 110.60 321.92 0.6250 1.6652 1.208 0.701 1.158 833 137.8 477.4 8.27 108.2 7.63 15.40 –70
–65 0.03837 1372.5 0.44482 116.66 324.96 0.6545 1.6552 1.213 0.716 1.159 806 138.9 438.5 8.46 105.7 7.96 14.88 –65
–60 0.05105 1357.4 0.34056 122.74 328.00 0.6833 1.6463 1.220 0.732 1.160 779 139.8 404.3 8.65 103.2 8.30 14.34 –60
–55 0.06688 1342.3 0.26444 128.87 331.03 0.7116 1.6384 1.227 0.749 1.161 754 140.7 373.8 8.84 100.8 8.65 13.80 –55
–50 0.08638 1326.9 0.20801 135.03 334.05 0.7395 1.6314 1.235 0.766 1.164 729 141.4 346.5 9.02 98.4 9.00 13.24 –50
–48 0.09533 1320.7 0.18960 137.51 335.25 0.7505 1.6288 1.239 0.773 1.165 719 141.6 336.4 9.10 97.4 9.14 13.02 –48
–46.74b 0.10132 1316.8 0.17902 139.07 336.01 0.7574 1.6273 1.241 0.777 1.166 713 141.8 330.2 9.15 96.8 9.23 12.88 –46.74
–46 0.10499 1314.5 0.17313 139.99 336.45 0.7615 1.6264 1.243 0.780 1.166 709 141.9 326.7 9.17 96.5 9.28 12.80 –46
–44 0.11541 1308.2 0.15836 142.48 337.65 0.7724 1.6241 1.247 0.787 1.167 699 142.1 317.4 9.25 95.5 9.42 12.57 –44
–42 0.12662 1301.9 0.14510 144.99 338.84 0.7832 1.6219 1.251 0.795 1.169 690 142.3 308.4 9.32 94.6 9.57 12.34 –42
–40 0.13867 1295.6 0.13317 147.49 340.03 0.7940 1.6198 1.255 0.803 1.170 680 142.5 299.8 9.40 93.7 9.71 12.12 –40
–38 0.15159 1289.2 0.12240 150.01 341.21 0.8047 1.6178 1.259 0.810 1.172 670 142.6 291.4 9.47 92.7 9.86 11.89 –38
–36 0.16542 1282.8 0.11268 152.54 342.38 0.8153 1.6159 1.264 0.818 1.174 661 142.7 283.4 9.55 91.8 10.01 11.66 –36
–34 0.18022 1276.3 0.10388 155.08 343.55 0.8260 1.6141 1.269 0.826 1.176 651 142.8 275.7 9.62 90.9 10.16 11.42 –34
–32 0.19602 1269.7 0.09590 157.63 344.72 0.8365 1.6123 1.274 0.835 1.178 642 142.9 268.3 9.70 90.0 10.31 11.19 –32
–30 0.21287 1263.2 0.08865 160.18 345.88 0.8470 1.6107 1.279 0.843 1.180 632 142.9 261.1 9.77 89.1 10.46 10.96 –30
–28 0.23081 1256.5 0.08205 162.75 347.03 0.8575 1.6092 1.284 0.852 1.183 622 143.0 254.1 9.85 88.2 10.61 10.72 –28
–26 0.24989 1249.8 0.07604 165.33 348.17 0.8679 1.6077 1.289 0.861 1.186 613 143.0 247.4 9.93 87.3 10.77 10.49 –26
–24 0.27016 1243.1 0.07055 167.92 349.30 0.8783 1.6063 1.295 0.870 1.188 603 142.9 240.9 10.00 86.5 10.93 10.25 –24
–22 0.29167 1236.3 0.06553 170.52 350.43 0.8886 1.6049 1.301 0.879 1.191 594 142.9 234.5 10.08 85.6 11.08 10.02 –22
–20 0.31446 1229.4 0.06094 173.13 351.54 0.8989 1.6037 1.307 0.888 1.195 584 142.8 228.4 10.15 84.7 11.24 9.78 –20
–18 0.33858 1222.5 0.05673 175.76 352.65 0.9091 1.6024 1.313 0.898 1.198 575 142.7 222.5 10.23 83.8 11.40 9.54 –18
–16 0.36408 1215.4 0.05286 178.39 353.75 0.9193 1.6013 1.319 0.908 1.202 566 142.5 216.8 10.31 83.0 11.56 9.30 –16
–14 0.39102 1208.4 0.04931 181.04 354.83 0.9295 1.6001 1.326 0.918 1.206 556 142.3 211.2 10.39 82.1 11.73 9.06 –14
–12 0.41945 1201.2 0.04603 183.71 355.91 0.9397 1.5991 1.333 0.929 1.210 547 142.1 205.7 10.47 81.2 11.89 8.82 –12
–10 0.44941 1193.9 0.04301 186.39 356.97 0.9498 1.5980 1.340 0.940 1.214 537 141.9 200.5 10.55 80.4 12.06 8.58 –10
–8 0.48096 1186.6 0.04023 189.08 358.02 0.9599 1.5971 1.348 0.951 1.219 528 141.6 195.3 10.63 79.5 12.23 8.34 –8
–6 0.51416 1179.2 0.03765 191.78 359.06 0.9699 1.5961 1.355 0.962 1.224 518 141.3 190.3 10.71 78.7 12.41 8.10 –6
–4 0.54906 1171.7 0.03527 194.51 360.08 0.9800 1.5952 1.363 0.974 1.230 508 141.0 185.5 10.79 77.8 12.58 7.86 –4
–2 0.58571 1164.0 0.03306 197.25 361.08 0.9900 1.5943 1.372 0.987 1.236 499 140.6 180.7 10.88 77.0 12.76 7.62 –2
0 0.62417 1156.3 0.03101 200.00 362.07 1.0000 1.5934 1.381 0.999 1.242 489 140.2 176.1 10.97 76.2 12.96 7.37 0
2 0.66450 1148.5 0.02910 202.77 363.05 1.0100 1.5925 1.390 1.012 1.249 480 139.8 171.6 11.05 75.3 13.16 7.13 2
4 0.70676 1140.5 0.02733 205.56 364.00 1.0199 1.5917 1.399 1.026 1.256 470 139.3 167.2 11.14 74.5 13.36 6.89 4
6 0.75099 1132.4 0.02568 208.37 364.94 1.0299 1.5908 1.410 1.040 1.264 460 138.8 162.9 11.23 73.7 13.57 6.65 6
8 0.79728 1124.2 0.02415 211.20 365.85 1.0398 1.5900 1.420 1.055 1.272 451 138.2 158.7 11.33 72.8 13.79 6.41 8
10 0.84566 1115.9 0.02271 214.04 366.75 1.0498 1.5891 1.431 1.071 1.282 441 137.6 154.5 11.43 72.0 14.01 6.17 10
12 0.89622 1107.4 0.02138 216.91 367.61 1.0597 1.5883 1.443 1.088 1.291 431 137.0 150.5 11.52 71.2 14.24 5.93 12
14 0.94900 1098.7 0.02012 219.80 368.46 1.0696 1.5874 1.455 1.105 1.302 422 136.3 146.6 11.63 70.4 14.49 5.69 14
16 1.00410 1089.9 0.01895 222.71 369.28 1.0796 1.5865 1.468 1.124 1.314 412 135.6 142.7 11.73 69.6 14.75 5.45 16
18 1.06150 1080.9 0.01785 225.65 370.07 1.0895 1.5856 1.482 1.144 1.327 402 134.9 138.9 11.86 68.8 15.01 5.21 18
20 1.12140 1071.7 0.01683 228.61 370.83 1.0995 1.5846 1.497 1.165 1.341 392 134.1 135.1 11.97 67.9 15.29 4.97 20
22 1.18370 1062.4 0.01586 231.60 371.55 1.1094 1.5836 1.513 1.188 1.356 382 133.2 131.5 12.09 67.1 15.58 4.74 22
24 1.24860 1052.8 0.01495 234.61 372.25 1.1194 1.5826 1.530 1.212 1.372 372 132.3 127.9 12.22 66.3 15.89 4.50 24
26 1.31610 1043.0 0.01410 237.66 372.91 1.1294 1.5815 1.548 1.239 1.391 362 131.4 124.3 12.35 65.5 16.21 4.27 26
28 1.38640 1032.9 0.01329 240.73 373.52 1.1394 1.5804 1.568 1.268 1.411 352 130.4 120.8 12.48 64.7 16.54 4.04 28
30 1.45940 1022.6 0.01253 243.84 374.10 1.1495 1.5792 1.589 1.299 1.433 341 129.3 117.4 12.62 63.9 16.90 3.81 30
32 1.53520 1011.9 0.01182 246.98 374.63 1.1595 1.5779 1.612 1.333 1.458 331 128.2 114.0 12.77 63.1 17.28 3.58 32
34 1.61400 1001.0 0.01114 250.16 375.11 1.1697 1.5765 1.637 1.371 1.485 321 127.1 110.6 12.93 62.2 17.68 3.35 34
36 1.69580 989.7 0.01050 253.39 375.54 1.1799 1.5750 1.664 1.413 1.516 310 125.9 107.3 13.10 61.4 18.12 3.12 36
38 1.78070 978.1 0.00989 256.65 375.91 1.1901 1.5734 1.695 1.459 1.551 300 124.6 104.0 13.28 60.6 18.58 2.90 38
40 1.86880 966.0 0.00932 259.96 376.22 1.2004 1.5717 1.729 1.511 1.591 289 123.2 100.7 13.47 59.8 19.09 2.68 40
42 1.96020 953.5 0.00877 263.33 376.46 1.2108 1.5698 1.767 1.570 1.636 278 121.8 97.5 13.68 59.0 19.63 2.47 42
44 2.05490 940.5 0.00825 266.74 376.61 1.2213 1.5678 1.811 1.638 1.689 267 120.4 94.3 13.90 58.1 20.23 2.25 44
46 2.15310 926.9 0.00776 270.23 376.68 1.2320 1.5655 1.860 1.716 1.750 256 118.8 91.0 14.14 57.3 20.89 2.04 46
48 2.25480 912.7 0.00728 273.78 376.66 1.2427 1.5631 1.918 1.807 1.823 245 117.2 87.8 14.41 56.5 21.62 1.83 48
50 2.36030 897.7 0.00683 277.41 376.52 1.2536 1.5603 1.985 1.915 1.910 233 115.5 84.6 14.70 55.7 22.43 1.63 50
55 2.64090 856.2 0.00578 286.91 375.54 1.2818 1.5519 2.225 2.304 2.228 203 110.8 76.4 15.59 53.6 24.98 1.15 55
60 2.94760 806.1 0.00480 297.28 373.26 1.3120 1.5401 2.677 3.060 2.855 171 105.5 67.7 16.86 51.7 28.77 0.70 60
65 3.28380 739.1 0.00384 309.30 368.44 1.3465 1.5215 3.940 5.190 4.625 135 99.3 57.9 18.93 50.7 35.54 0.31 65
70 3.65570 599.6 0.00260 328.32 353.47 1.4007 1.4740 31.960 44.630 36.780 92 90.7 42.0 25.07 63.2 67.27 0.02 70
70.62c 3.70500 490.8 0.00204 340.45 340.45 1.4358 1.4358 ∞ ∞ ∞ 0 0.0 — — — — 0.00 70.62
*Temperatures on ITS-90 scale **Small deviations from azeotropic behavior occur at some conditions; tabulated
pressures are average of bubble and dew-point pressures
bNormal boiling point cCritical point

Fig.16Pressure-EnthalpyDiagramforRefrigerant717(Ammonia)
Pressure

Refrigerant 717 (Ammonia) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–77.65a 0.00609 732.9 15.602 –143.15 1341.23 –0.4716 7.1213 4.202 2.063 1.325 2124 354.1 559.6 6.84 819.0 19.64 62.26 –77.65
–70 0.01094 724.7 9.0079 –110.81 1355.55 –0.3094 6.9088 4.245 2.086 1.327 2051 360.5 475.0 7.03 792.1 19.73 59.10 –70
–60 0.02189 713.6 4.7057 –68.06 1373.73 –0.1040 6.6602 4.303 2.125 1.330 1967 368.4 391.3 7.30 757.0 19.93 55.05 –60
–50 0.04084 702.1 2.6277 –24.73 1391.19 0.0945 6.4396 4.360 2.178 1.335 1890 375.6 328.9 7.57 722.3 20.24 51.11 –50
–40 0.07169 690.2 1.5533 19.17 1407.76 0.2867 6.2425 4.414 2.244 1.342 1816 382.2 281.2 7.86 688.1 20.64 47.26 –40
–38 0.07971 687.7 1.4068 28.01 1410.96 0.3245 6.2056 4.424 2.259 1.343 1802 383.4 273.1 7.92 681.4 20.73 46.51 –38
–36 0.08845 685.3 1.2765 36.88 1414.11 0.3619 6.1694 4.434 2.275 1.345 1787 384.6 265.3 7.98 674.6 20.83 45.75 –36
–34 0.09795 682.8 1.1604 45.77 1417.23 0.3992 6.1339 4.444 2.291 1.347 1773 385.8 257.9 8.03 667.9 20.93 45.00 –34
–33.33b 0.10133 682.0 1.1242 48.76 1418.26 0.4117 6.1221 4.448 2.297 1.348 1768 386.2 255.5 8.05 665.7 20.97 44.75 –33.33
–32 0.10826 680.3 1.0567 54.67 1420.29 0.4362 6.0992 4.455 2.308 1.349 1759 387.0 250.8 8.09 661.3 21.04 44.26 –32
–30 0.11943 677.8 0.96396 63.60 1423.31 0.4730 6.0651 4.465 2.326 1.351 1744 388.1 244.1 8.15 654.6 21.15 43.52 –30
–28 0.13151 675.3 0.88082 72.55 1426.28 0.5096 6.0317 4.474 2.344 1.353 1730 389.2 237.6 8.21 648.0 21.26 42.78 –28
–26 0.14457 672.8 0.80614 81.52 1429.21 0.5460 5.9989 4.484 2.363 1.355 1716 390.2 231.4 8.27 641.5 21.38 42.05 –26
–24 0.15864 670.3 0.73896 90.51 1432.08 0.5821 5.9667 4.494 2.383 1.358 1702 391.2 225.5 8.33 634.9 21.51 41.32 –24
–22 0.17379 667.7 0.67840 99.52 1434.91 0.6180 5.9351 4.504 2.403 1.360 1687 392.2 219.8 8.39 628.4 21.63 40.60 –22
–20 0.19008 665.1 0.62373 108.55 1437.68 0.6538 5.9041 4.514 2.425 1.363 1673 393.2 214.4 8.45 622.0 21.77 39.88 –20
–18 0.20756 662.6 0.57428 117.60 1440.39 0.6893 5.8736 4.524 2.446 1.365 1659 394.1 209.2 8.51 615.5 21.90 39.16 –18
–16 0.22630 660.0 0.52949 126.67 1443.06 0.7246 5.8437 4.534 2.469 1.368 1645 395.0 204.2 8.57 609.1 22.05 38.45 –16
–14 0.24637 657.3 0.48885 135.76 1445.66 0.7597 5.8143 4.543 2.493 1.371 1631 395.8 199.3 8.63 602.8 22.19 37.74 –14
–12 0.26782 654.7 0.45192 144.88 1448.21 0.7946 5.7853 4.553 2.517 1.375 1616 396.7 194.7 8.69 596.4 22.35 37.04 –12
–10 0.29071 652.1 0.41830 154.01 1450.70 0.8293 5.7569 4.564 2.542 1.378 1602 397.5 190.2 8.75 590.1 22.50 36.34 –10
–8 0.31513 649.4 0.38767 163.16 1453.14 0.8638 5.7289 4.574 2.568 1.382 1588 398.2 185.9 8.81 583.9 22.67 35.65 –8
–6 0.34114 646.7 0.35970 172.34 1455.51 0.8981 5.7013 4.584 2.594 1.385 1574 398.9 181.7 8.87 577.7 22.83 34.96 –6
–4 0.36880 644.0 0.33414 181.54 1457.81 0.9323 5.6741 4.595 2.622 1.389 1559 399.6 177.7 8.93 571.5 23.00 34.27 –4
–2 0.39819 641.3 0.31074 190.76 1460.06 0.9662 5.6474 4.606 2.651 1.393 1545 400.2 173.8 8.99 565.3 23.18 33.59 –2
0 0.42938 638.6 0.28930 200.00 1462.24 1.0000 5.6210 4.617 2.680 1.398 1531 400.8 170.1 9.06 559.2 23.37 32.91 0
2 0.46246 635.8 0.26962 209.27 1464.35 1.0336 5.5951 4.628 2.710 1.402 1516 401.4 166.5 9.12 553.1 23.55 32.24 2
4 0.49748 633.1 0.25153 218.55 1466.40 1.0670 5.5695 4.639 2.742 1.407 1502 401.9 162.9 9.18 547.1 23.75 31.57 4
6 0.53453 630.3 0.23489 227.87 1468.37 1.1003 5.5442 4.651 2.774 1.412 1487 402.4 159.5 9.24 541.1 23.95 30.91 6
8 0.57370 627.5 0.21956 237.20 1470.28 1.1334 5.5192 4.663 2.807 1.417 1473 402.8 156.2 9.30 535.1 24.15 30.24 8
10 0.61505 624.6 0.20543 246.57 1472.11 1.1664 5.4946 4.676 2.841 1.422 1458 403.2 153.0 9.36 529.1 24.37 29.59 10
12 0.65866 621.8 0.19237 255.95 1473.88 1.1992 5.4703 4.689 2.877 1.428 1443 403.6 149.9 9.43 523.2 24.58 28.94 12
14 0.70463 618.9 0.18031 265.37 1475.56 1.2318 5.4463 4.702 2.913 1.434 1429 403.9 146.9 9.49 517.3 24.81 28.29 14
16 0.75303 616.0 0.16914 274.81 1477.17 1.2643 5.4226 4.716 2.951 1.440 1414 404.2 144.0 9.55 511.5 25.04 27.65 16
18 0.80395 613.1 0.15879 284.28 1478.70 1.2967 5.3991 4.730 2.990 1.446 1399 404.4 141.1 9.61 505.6 25.27 27.01 18
20 0.85748 610.2 0.14920 293.78 1480.16 1.3289 5.3759 4.745 3.030 1.453 1384 404.6 138.3 9.68 499.9 25.52 26.38 20
22 0.91369 607.2 0.14029 303.31 1481.53 1.3610 5.3529 4.760 3.071 1.460 1370 404.8 135.6 9.74 494.1 25.77 25.75 22
24 0.97268 604.3 0.13201 312.87 1482.82 1.3929 5.3301 4.776 3.113 1.468 1355 404.9 133.0 9.80 488.4 26.03 25.12 24
26 1.03450 601.3 0.12431 322.47 1484.02 1.4248 5.3076 4.793 3.158 1.475 1340 404.9 130.4 9.87 482.7 26.29 24.50 26
28 1.09930 598.2 0.11714 332.09 1485.14 1.4565 5.2853 4.810 3.203 1.484 1324 405.0 127.9 9.93 477.0 26.57 23.89 28
30 1.16720 595.2 0.11046 341.76 1486.17 1.4881 5.2631 4.828 3.250 1.492 1309 404.9 125.5 10.00 471.4 26.85 23.28 30
32 1.23820 592.1 0.10422 351.45 1487.11 1.5196 5.2412 4.847 3.299 1.501 1294 404.8 123.1 10.06 465.7 27.14 22.67 32
34 1.31240 589.0 0.09840 361.19 1487.95 1.5509 5.2194 4.867 3.349 1.510 1279 404.7 120.7 10.13 460.1 27.43 22.07 34
36 1.39000 585.8 0.09296 370.96 1488.70 1.5822 5.1978 4.888 3.401 1.520 1263 404.5 118.4 10.19 454.6 27.74 21.47 36
38 1.47090 582.6 0.08787 380.78 1489.36 1.6134 5.1763 4.909 3.455 1.530 1248 404.3 116.2 10.26 449.1 28.05 20.88 38
40 1.55540 579.4 0.08310 390.64 1489.91 1.6446 5.1549 4.932 3.510 1.541 1232 404.0 114.0 10.33 443.5 28.38 20.29 40
42 1.64350 576.2 0.07863 400.54 1490.36 1.6756 5.1337 4.956 3.568 1.553 1216 403.7 111.9 10.39 438.0 28.71 19.71 42
44 1.73530 572.9 0.07445 410.48 1490.70 1.7065 5.1126 4.981 3.628 1.565 1201 403.3 109.8 10.46 432.6 29.06 19.13 44
46 1.83100 569.6 0.07052 420.48 1490.94 1.7374 5.0915 5.007 3.691 1.577 1185 402.9 107.8 10.53 427.1 29.41 18.56 46
48 1.93050 566.3 0.06682 430.52 1491.06 1.7683 5.0706 5.034 3.756 1.591 1169 402.4 105.8 10.60 421.7 29.78 17.99 48
50 2.03400 562.9 0.06335 440.62 1491.07 1.7990 5.0497 5.064 3.823 1.605 1153 401.9 103.8 10.67 416.3 30.16 17.43 50
55 2.31110 554.2 0.05554 466.10 1490.57 1.8758 4.9977 5.143 4.005 1.643 1112 400.3 99.0 10.86 402.9 31.16 16.04 55
60 2.61560 545.2 0.04880 491.97 1489.27 1.9523 4.9458 5.235 4.208 1.687 1070 398.3 94.5 11.05 389.6 32.26 14.69 60
65 2.94910 536.0 0.04296 518.26 1487.09 2.0288 4.8939 5.341 4.438 1.739 1028 396.0 90.1 11.25 376.4 33.47 13.37 65
70 3.31350 526.3 0.03787 545.04 1483.94 2.1054 4.8415 5.465 4.699 1.799 984 393.3 85.9 11.47 363.2 34.80 12.08 70
75 3.71050 516.2 0.03342 572.37 1479.72 2.1823 4.7885 5.610 5.001 1.870 940 390.1 81.9 11.70 350.2 36.30 10.83 75
80 4.14200 505.7 0.02951 600.34 1474.31 2.2596 4.7344 5.784 5.355 1.955 895 386.5 78.0 11.95 337.1 38.00 9.61 80
85 4.61000 494.5 0.02606 629.04 1467.53 2.3377 4.6789 5.993 5.777 2.058 848 382.5 74.2 12.23 324.1 39.95 8.44 85
90 5.11670 482.8 0.02300 658.61 1459.19 2.4168 4.6213 6.250 6.291 2.187 800 377.9 70.5 12.55 311.0 42.24 7.30 90
95 5.66430 470.2 0.02027 689.19 1449.01 2.4973 4.5612 6.573 6.933 2.349 751 372.7 66.8 12.91 297.9 44.99 6.20 95
100 6.25530 456.6 0.01782 721.00 1436.63 2.5797 4.4975 6.991 7.762 2.562 701 367.0 63.2 13.32 284.8 48.36 5.15 100
105 6.89230 441.9 0.01561 754.35 1421.57 2.6647 4.4291 7.555 8.877 2.851 649 360.5 59.6 13.82 271.5 52.65 4.15 105
110 7.57830 425.6 0.01360 789.68 1403.08 2.7533 4.3542 8.360 10.46 3.26 594 353.3 56.0 14.42 258.1 58.33 3.20 110
115 8.31700 407.2 0.01174 827.74 1379.99 2.8474 4.2702 9.630 12.91 3.91 538 345.0 52.3 15.19 244.6 66.28 2.31 115
120 9.11250 385.5 0.00999 869.92 1350.23 2.9502 4.1719 11.940 17.21 5.04 477 335.4 48.3 16.21 231.2 78.40 1.50 120
125 9.97002 357.8 0.00828 919.68 1309.12 3.0702 4.0483 17.660 27.00 7.62 411 323.6 43.8 17.73 219.1 100.01 0.77 125
130 10.89770 312.3 0.00638 992.02 1239.32 3.2437 3.8571 54.210 76.49 20.66 334 306.6 37.3 20.63 221.9 160.39 0.18 130
132.25c 11.33300 225.0 0.00444 1119.22 1119.22 3.5542 3.5542 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 132.25

Fig.17Pressure-EnthalpyDiagramforRefrigerant718(Water/Steam)
Pressure

Refrigerant 718 (Water/Steam) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure, MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
0.01a 0.00061 999.8 205.990 0.00 2500.92 0.0000 9.1555 4.220 1.884 1.329 1402 409.0 1791.2 9.22 561.0 17.07 75.65 0.01
5 0.00087 999.9 147.010 21.02 2510.06 0.0763 9.0248 4.205 1.889 1.328 1426 412.6 1518.3 9.34 570.5 17.34 74.94 5
10 0.00123 999.7 106.300 42.02 2519.21 0.1511 8.8998 4.196 1.895 1.328 1447 416.2 1306.0 9.46 580.0 17.62 74.22 10
15 0.00171 999.1 77.8750 62.98 2528.33 0.2245 8.7803 4.189 1.900 1.328 1466 419.7 1137.6 9.59 589.3 17.92 73.49 15
20 0.00234 998.2 57.7570 83.91 2537.43 0.2965 8.6660 4.184 1.906 1.327 1482 423.2 1001.6 9.73 598.4 18.23 72.74 20
25 0.00317 997.0 43.3370 104.83 2546.51 0.3672 8.5566 4.182 1.912 1.327 1497 426.6 890.1 9.87 607.2 18.55 71.97 25
30 0.00425 995.6 32.8780 125.73 2555.55 0.4368 8.4520 4.180 1.918 1.327 1509 430.0 797.4 10.01 615.5 18.89 71.19 30
35 0.00563 994.0 25.2050 146.63 2564.55 0.5051 8.3517 4.180 1.925 1.327 1520 433.4 719.3 10.16 623.3 19.24 70.40 35
40 0.00738 992.2 19.5150 167.53 2573.51 0.5724 8.2555 4.180 1.931 1.327 1529 436.7 653.0 10.31 630.6 19.60 69.60 40
45 0.00959 990.2 15.2520 188.43 2582.43 0.6386 8.1633 4.180 1.939 1.327 1536 440.0 596.1 10.46 637.3 19.97 68.78 45
50 0.01235 988.0 12.0270 209.34 2591.29 0.7038 8.0748 4.182 1.947 1.328 1542 443.2 546.8 10.62 643.6 20.36 67.94 50
55 0.01576 985.7 9.5643 230.26 2600.09 0.7680 7.9898 4.183 1.955 1.328 1547 446.4 504.0 10.77 649.2 20.77 67.10 55
60 0.01995 983.2 7.6672 251.18 2608.83 0.8313 7.9081 4.185 1.965 1.328 1551 449.5 466.4 10.93 654.3 21.19 66.24 60
65 0.02504 980.5 6.1935 272.12 2617.50 0.8937 7.8296 4.187 1.975 1.329 1553 452.6 433.2 11.10 659.0 21.62 65.37 65
70 0.03120 977.7 5.0395 293.07 2626.10 0.9551 7.7540 4.190 1.986 1.330 1555 455.6 403.9 11.26 663.1 22.07 64.48 70
75 0.03860 974.8 4.1289 314.03 2634.60 1.0158 7.6812 4.193 1.999 1.331 1555 458.5 377.7 11.43 666.8 22.53 63.58 75
80 0.04741 971.8 3.4052 335.01 2643.02 1.0756 7.6111 4.197 2.012 1.332 1554 461.4 354.3 11.59 670.0 23.01 62.67 80
85 0.05787 968.6 2.8258 356.01 2651.33 1.1346 7.5434 4.201 2.027 1.333 1553 464.2 333.3 11.76 672.8 23.51 61.75 85
90 0.07018 965.3 2.3591 377.04 2659.53 1.1929 7.4781 4.205 2.043 1.334 1550 466.9 314.4 11.93 675.3 24.02 60.82 90
95 0.08461 961.9 1.9806 398.09 2667.61 1.2504 7.4151 4.210 2.061 1.335 1547 469.6 297.3 12.10 677.3 24.55 59.87 95
99.97b 0.10133 958.4 1.6732 419.06 2675.53 1.3069 7.3544 4.216 2.080 1.337 1543 472.2 281.8 12.27 679.1 25.09 58.92 99.97
100 0.10142 958.3 1.6718 419.17 2675.57 1.3072 7.3541 4.216 2.080 1.337 1543 472.2 281.7 12.27 679.1 25.10 58.91 100
105 0.12090 954.7 1.4184 440.27 2683.39 1.3633 7.2952 4.222 2.101 1.339 1538 474.7 267.6 12.44 680.5 25.66 57.94 105
110 0.14338 950.9 1.2093 461.42 2691.06 1.4188 7.2381 4.228 2.124 1.341 1533 477.1 254.7 12.61 681.7 26.24 56.96 110
115 0.16918 947.1 1.0358 482.59 2698.58 1.4737 7.1828 4.236 2.150 1.343 1527 479.5 242.9 12.78 682.6 26.85 55.97 115
120 0.19867 943.1 0.89121 503.81 2705.93 1.5279 7.1291 4.244 2.177 1.346 1520 481.7 232.1 12.96 683.2 27.47 54.97 120
125 0.23224 939.0 0.77003 525.07 2713.10 1.5816 7.0770 4.252 2.207 1.349 1512 483.9 222.1 13.13 683.6 28.11 53.96 125
130 0.27028 934.8 0.66800 546.38 2720.08 1.6346 7.0264 4.261 2.239 1.352 1504 486.0 212.9 13.30 683.7 28.76 52.93 130
135 0.31323 930.5 0.58173 567.74 2726.87 1.6872 6.9772 4.272 2.274 1.355 1496 487.9 204.4 13.47 683.6 29.44 51.90 135
140 0.36154 926.1 0.50845 589.16 2733.44 1.7392 6.9293 4.283 2.311 1.359 1486 489.8 196.5 13.65 683.3 30.14 50.86 140
145 0.41568 921.6 0.44596 610.64 2739.80 1.7907 6.8826 4.294 2.351 1.363 1476 491.6 189.2 13.82 682.8 30.86 49.80 145
150 0.47616 917.0 0.39245 632.18 2745.93 1.8418 6.8371 4.307 2.394 1.368 1466 493.3 182.5 13.99 682.0 31.60 48.74 150
155 0.54350 912.3 0.34646 653.79 2751.81 1.8924 6.7926 4.321 2.440 1.373 1455 494.8 176.1 14.16 681.1 32.35 47.67 155
160 0.61823 907.4 0.30678 675.47 2757.44 1.9426 6.7491 4.335 2.488 1.379 1443 496.3 170.2 14.34 680.0 33.13 46.59 160
165 0.70093 902.5 0.27243 697.24 2762.81 1.9923 6.7066 4.351 2.540 1.385 1431 497.6 164.7 14.51 678.6 33.93 45.50 165
170 0.79219 897.5 0.24259 719.08 2767.90 2.0417 6.6650 4.368 2.594 1.392 1419 498.9 159.6 14.68 677.0 34.75 44.41 170
175 0.89260 892.3 0.21658 741.02 2772.71 2.0906 6.6241 4.386 2.652 1.399 1405 500.0 154.7 14.85 675.3 35.59 43.30 175
180 1.00280 887.0 0.19384 763.05 2777.21 2.1392 6.5840 4.405 2.713 1.407 1392 501.0 150.1 15.03 673.3 36.45 42.19 180
185 1.12350 881.6 0.17390 785.19 2781.41 2.1875 6.5447 4.425 2.777 1.416 1378 501.9 145.8 15.20 671.1 37.33 41.07 185
190 1.25520 876.1 0.15636 807.43 2785.28 2.2355 6.5059 4.447 2.844 1.425 1363 502.7 141.8 15.37 668.8 38.24 39.95 190
195 1.39880 870.4 0.14089 829.79 2788.82 2.2832 6.4678 4.471 2.915 1.436 1348 503.4 137.9 15.54 666.1 39.16 38.81 195
200 1.55490 864.7 0.12721 852.27 2792.01 2.3305 6.4302 4.496 2.990 1.447 1332 503.9 134.3 15.71 663.3 40.11 37.67 200
205 1.72430 858.8 0.11508 874.88 2794.83 2.3777 6.3930 4.523 3.068 1.459 1316 504.3 130.9 15.89 660.3 41.09 36.53 205
210 1.90770 852.7 0.10429 897.63 2797.27 2.4245 6.3563 4.551 3.150 1.472 1299 504.6 127.6 16.06 657.0 42.09 35.38 210
215 2.10580 846.5 0.09468 920.53 2799.32 2.4712 6.3200 4.582 3.237 1.486 1282 504.8 124.5 16.24 653.4 43.11 34.23 215
220 2.31960 840.2 0.08609 943.58 2800.95 2.5177 6.2840 4.615 3.329 1.501 1264 504.8 121.5 16.41 649.7 44.17 33.07 220
225 2.54970 833.7 0.07840 966.80 2802.15 2.5640 6.2483 4.650 3.426 1.518 1246 504.6 118.7 16.59 645.6 45.26 31.90 225
230 2.79710 827.1 0.07150 990.19 2802.90 2.6101 6.2128 4.688 3.528 1.536 1228 504.4 116.0 16.76 641.3 46.38 30.74 230
235 3.06250 820.3 0.06530 1013.77 2803.17 2.6561 6.1775 4.728 3.638 1.556 1209 503.9 113.4 16.94 636.7 47.53 29.57 235
240 3.34690 813.4 0.05970 1037.55 2802.96 2.7020 6.1423 4.772 3.754 1.578 1189 503.3 110.9 17.12 631.8 48.73 28.39 240
245 3.65120 806.2 0.05465 1061.55 2802.22 2.7478 6.1072 4.819 3.878 1.601 1169 502.6 108.4 17.31 626.7 49.97 27.22 245
250 3.97620 798.9 0.05008 1085.77 2800.93 2.7935 6.0721 4.870 4.011 1.627 1148 501.6 106.1 17.49 621.2 51.26 26.04 250
255 4.32290 791.4 0.04594 1110.23 2799.07 2.8392 6.0369 4.925 4.153 1.655 1127 500.5 103.9 17.68 615.4 52.61 24.87 255
260 4.69230 783.6 0.04217 1134.96 2796.60 2.8849 6.0016 4.986 4.308 1.686 1105 499.2 101.7 17.88 609.2 54.03 23.69 260
265 5.08530 775.7 0.03875 1159.96 2793.49 2.9307 5.9661 5.051 4.475 1.720 1083 497.7 99.6 18.07 602.8 55.53 22.51 265
270 5.50300 767.5 0.03562 1185.27 2789.69 2.9765 5.9304 5.123 4.656 1.757 1060 496.0 97.5 18.28 595.9 57.11 21.34 270
275 5.94640 759.0 0.03277 1210.90 2785.17 3.0224 5.8944 5.202 4.855 1.798 1037 494.1 95.5 18.48 588.7 58.80 20.16 275
280 6.41660 750.3 0.03015 1236.88 2779.87 3.0685 5.8579 5.289 5.073 1.845 1013 491.9 93.5 18.70 581.1 60.61 18.99 280
285 6.91470 741.3 0.02776 1263.25 2773.73 3.1147 5.8209 5.385 5.314 1.896 988 489.5 91.6 18.92 573.2 62.57 17.83 285
290 7.44180 731.9 0.02555 1290.03 2766.70 3.1612 5.7834 5.493 5.582 1.954 962 486.9 89.7 19.15 565.0 64.71 16.66 290
295 7.99910 722.2 0.02353 1317.27 2758.70 3.2080 5.7451 5.614 5.882 2.019 936 483.9 87.8 19.40 556.3 67.05 15.51 295
300 8.58790 712.1 0.02166 1345.01 2749.64 3.2552 5.7059 5.750 6.220 2.094 909 480.7 85.9 19.65 547.4 69.65 14.36 300
310 9.86510 690.7 0.01833 1402.22 2727.95 3.3510 5.6244 6.085 7.045 2.277 853 473.3 82.2 20.21 528.7 75.84 12.09 310
320 11.28430 667.1 0.01547 1462.22 2700.59 3.4494 5.5372 6.537 8.159 2.528 793 464.4 78.4 20.85 509.2 83.91 9.86 320
330 12.85810 640.8 0.01298 1525.87 2666.03 3.5518 5.4422 7.186 9.753 2.889 729 453.7 74.5 21.61 489.1 94.94 7.70 330
340 14.60070 610.7 0.01078 1594.53 2621.85 3.6601 5.3356 8.210 12.24 3.45 658 440.7 70.4 22.55 468.5 110.91 5.63 340
350 16.52940 574.7 0.00880 1670.89 2563.64 3.7784 5.2110 10.120 16.69 4.46 578 424.4 65.9 23.82 447.4 135.95 3.67 350
360 18.66600 527.6 0.00695 1761.66 2481.49 3.9167 5.0536 15.000 27.36 6.83 480 402.4 60.3 25.72 425.7 181.51 1.88 360
370 21.04360 451.4 0.00495 1890.69 2334.52 4.1112 4.8012 45.160 96.60 21.15 360 362.8 52.1 29.68 425.0 323.84 0.39 370
373.95c 22.06400 322.0 0.00311 2084.26 2084.26 4.4070 4.4070 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 373.95

Fig.18Pressure-EnthalpyDiagramforRefrigerant744(CarbonDioxide)
Pressure

Refrigerant 744 (Carbon Dioxide) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–56.56a 0.51796 1178.5 0.07267 80.04 430.42 0.5213 2.1390 1.953 0.909 1.444 976 222.8 256.7 10.95 180.6 11.01 17.16 –56.56
–50 0.68234 1154.6 0.05579 92.94 432.68 0.5794 2.1018 1.971 0.952 1.468 928 223.4 229.3 11.31 172.1 11.58 15.53 –50
–48 0.73949 1147.1 0.05162 96.90 433.29 0.5968 2.0909 1.978 0.967 1.477 914 223.5 221.6 11.42 169.5 11.76 15.04 –48
–46 0.80015 1139.6 0.04782 100.88 433.86 0.6142 2.0801 1.985 0.982 1.486 900 223.6 214.3 11.53 166.9 11.95 14.56 –46
–44 0.86445 1132.0 0.04435 104.87 434.39 0.6314 2.0694 1.993 0.998 1.496 885 223.6 207.2 11.64 164.4 12.14 14.07 –44
–42 0.93252 1124.2 0.04118 108.88 434.88 0.6486 2.0589 2.002 1.015 1.507 871 223.6 200.3 11.75 161.8 12.34 13.60 –42
–40 1.00450 1116.4 0.03828 112.90 435.32 0.6656 2.0485 2.012 1.033 1.518 856 223.5 193.8 11.87 159.3 12.54 13.12 –40
–38 1.08050 1108.5 0.03562 116.95 435.72 0.6826 2.0382 2.022 1.052 1.530 842 223.4 187.4 11.98 156.8 12.75 12.65 –38
–36 1.16070 1100.5 0.03318 121.01 436.07 0.6995 2.0281 2.033 1.072 1.544 827 223.2 181.3 12.10 154.3 12.97 12.18 –36
–34 1.24520 1092.4 0.03093 125.10 436.37 0.7163 2.0180 2.045 1.094 1.558 813 223.1 175.4 12.22 151.8 13.20 11.72 –34
–32 1.33420 1084.1 0.02886 129.20 436.62 0.7331 2.0079 2.059 1.116 1.573 798 222.8 169.7 12.34 149.3 13.43 11.26 –32
–30 1.42780 1075.7 0.02696 133.34 436.82 0.7498 1.9980 2.073 1.141 1.590 783 222.5 164.2 12.46 146.9 13.68 10.80 –30
–28 1.52610 1067.2 0.02519 137.50 436.96 0.7665 1.9880 2.089 1.166 1.608 768 222.2 158.9 12.59 144.4 13.94 10.35 –28
–26 1.62930 1058.6 0.02356 141.69 437.04 0.7831 1.9781 2.105 1.194 1.627 753 221.8 153.8 12.72 141.9 14.20 9.90 –26
–24 1.73750 1049.8 0.02205 145.91 437.06 0.7997 1.9683 2.124 1.223 1.648 738 221.4 148.8 12.85 139.5 14.49 9.46 –24
–22 1.85090 1040.8 0.02065 150.16 437.01 0.8163 1.9584 2.144 1.255 1.671 723 220.9 144.0 12.98 137.1 14.78 9.02 –22
–20 1.96960 1031.7 0.01934 154.45 436.89 0.8328 1.9485 2.165 1.289 1.696 708 220.4 139.3 13.12 134.6 15.09 8.59 –20
–19 2.03100 1027.0 0.01873 156.61 436.81 0.8411 1.9436 2.177 1.307 1.709 700 220.1 137.1 13.18 133.4 15.25 8.37 –19
–18 2.09380 1022.3 0.01813 158.77 436.70 0.8494 1.9386 2.189 1.326 1.723 692 219.8 134.8 13.26 132.2 15.42 8.16 –18
–17 2.15810 1017.6 0.01756 160.95 436.58 0.8576 1.9337 2.201 1.346 1.738 684 219.5 132.6 13.33 131.0 15.59 7.95 –17
–16 2.22370 1012.8 0.01700 163.14 436.44 0.8659 1.9287 2.215 1.366 1.753 676 219.2 130.4 13.40 129.8 15.77 7.74 –16
–15 2.29080 1008.0 0.01647 165.34 436.27 0.8742 1.9237 2.228 1.388 1.768 668 218.8 128.3 13.47 128.6 15.95 7.53 –15
–14 2.35930 1003.1 0.01595 167.55 436.09 0.8825 1.9187 2.243 1.410 1.785 660 218.5 126.2 13.55 127.4 16.14 7.32 –14
–13 2.42940 998.1 0.01545 169.78 435.89 0.8908 1.9137 2.258 1.433 1.802 651 218.1 124.1 13.63 126.2 16.34 7.11 –13
–12 2.50100 993.1 0.01497 172.01 435.66 0.8991 1.9086 2.273 1.457 1.821 643 217.7 122.0 13.70 125.0 16.54 6.90 –12
–11 2.57400 988.1 0.01450 174.26 435.41 0.9074 1.9036 2.290 1.483 1.840 635 217.4 120.0 13.78 123.8 16.74 6.70 –11
–10 2.64870 982.9 0.01405 176.52 435.14 0.9157 1.8985 2.307 1.509 1.860 626 216.9 118.0 13.86 122.5 16.96 6.50 –10
–9 2.72490 977.7 0.01361 178.80 434.84 0.9240 1.8934 2.325 1.537 1.881 617 216.5 116.1 13.95 121.3 17.18 6.29 –9
–8 2.80270 972.5 0.01319 181.09 434.51 0.9324 1.8882 2.345 1.566 1.904 609 216.1 114.1 14.03 120.1 17.42 6.09 –8
–7 2.88210 967.1 0.01278 183.39 434.17 0.9408 1.8830 2.365 1.597 1.927 600 215.6 112.2 14.12 118.9 17.66 5.89 –7
–6 2.96320 961.7 0.01238 185.71 433.79 0.9491 1.8778 2.386 1.629 1.952 591 215.2 110.3 14.20 117.7 17.91 5.70 –6
–5 3.04590 956.2 0.01200 188.05 433.38 0.9576 1.8725 2.408 1.663 1.979 582 214.7 108.4 14.30 116.5 18.17 5.50 –5
–4 3.13030 950.6 0.01162 190.40 432.95 0.9660 1.8672 2.432 1.699 2.007 573 214.2 106.6 14.39 115.3 18.44 5.30 –4
–3 3.21640 945.0 0.01126 192.77 432.48 0.9744 1.8618 2.457 1.737 2.037 564 213.7 104.8 14.48 114.1 18.73 5.11 –3
–2 3.30420 939.2 0.01091 195.16 431.99 0.9829 1.8563 2.484 1.777 2.068 555 213.1 102.9 14.58 112.9 19.03 4.92 –2
–1 3.39380 933.4 0.01057 197.57 431.46 0.9914 1.8509 2.512 1.819 2.102 546 212.6 101.2 14.68 111.6 19.34 4.73 –1
0 3.48510 927.4 0.01024 200.00 430.89 1.0000 1.8453 2.542 1.865 2.138 536 212.0 99.4 14.79 110.4 19.67 4.54 0
1 3.57830 921.4 0.00992 202.45 430.29 1.0086 1.8397 2.574 1.913 2.176 527 211.5 97.6 14.89 109.2 20.02 4.35 1
2 3.67330 915.2 0.00961 204.93 429.65 1.0172 1.8340 2.609 1.965 2.218 518 210.9 95.9 15.00 108.0 20.38 4.17 2
3 3.77010 909.0 0.00931 207.43 428.97 1.0259 1.8282 2.645 2.020 2.262 508 210.3 94.2 15.12 106.8 20.76 3.99 3
4 3.86880 902.6 0.00901 209.95 428.25 1.0346 1.8223 2.685 2.080 2.309 499 209.6 92.5 15.24 105.5 21.17 3.80 4
5 3.96950 896.0 0.00872 212.50 427.48 1.0434 1.8163 2.727 2.144 2.360 489 209.0 90.8 15.36 104.3 21.60 3.62 5
6 4.07200 889.4 0.00845 215.08 426.67 1.0523 1.8102 2.772 2.213 2.416 480 208.3 89.1 15.49 103.1 22.06 3.45 6
7 4.17650 882.6 0.00817 217.69 425.81 1.0612 1.8041 2.822 2.289 2.476 470 207.6 87.5 15.62 101.8 22.54 3.27 7
8 4.28310 875.6 0.00791 220.34 424.89 1.0702 1.7977 2.875 2.370 2.541 460 206.9 85.8 15.76 100.6 23.06 3.10 8
9 4.39160 868.4 0.00765 223.01 423.92 1.0792 1.7913 2.934 2.460 2.612 451 206.2 84.2 15.91 99.4 23.61 2.93 9
10 4.50220 861.1 0.00740 225.73 422.88 1.0884 1.7847 2.998 2.558 2.690 441 205.4 82.6 16.06 98.1 24.21 2.76 10
11 4.61490 853.6 0.00715 228.49 421.79 1.0976 1.7779 3.068 2.666 2.776 431 204.6 80.9 16.22 96.9 24.84 2.59 11
12 4.72970 845.9 0.00691 231.29 420.62 1.1070 1.7710 3.145 2.786 2.871 421 203.8 79.3 16.39 95.6 25.53 2.42 12
13 4.84660 837.9 0.00668 234.13 419.37 1.1165 1.7638 3.232 2.919 2.977 411 203.0 77.7 16.56 94.4 26.27 2.26 13
14 4.96580 829.7 0.00645 237.03 418.05 1.1261 1.7565 3.328 3.068 3.095 401 202.1 76.1 16.75 93.1 27.08 2.10 14
15 5.08701 821.2 0.00622 239.99 416.64 1.1359 1.7489 3.436 3.237 3.228 391 201.2 74.4 16.95 91.9 27.96 1.95 15
16 5.21080 812.4 0.00600 243.01 415.12 1.1458 1.7411 3.558 3.429 3.378 381 200.3 72.8 17.16 90.6 28.93 1.79 16
17 5.33680 803.3 0.00578 246.10 413.50 1.1559 1.7329 3.698 3.649 3.550 370 199.3 71.2 17.39 89.4 29.99 1.64 17
18 5.46510 793.8 0.00557 249.26 411.76 1.1663 1.7244 3.858 3.905 3.748 360 198.3 69.5 17.64 88.1 31.16 1.49 18
19 5.59580 783.8 0.00536 252.52 409.89 1.1769 1.7155 4.044 4.204 3.979 349 197.2 67.8 17.90 86.9 32.47 1.35 19
20 5.72910 773.4 0.00515 255.87 407.87 1.1877 1.7062 4.264 4.560 4.252 338 196.1 66.1 18.19 85.7 33.94 1.20 20
21 5.86480 762.4 0.00494 259.33 405.67 1.1989 1.6964 4.526 4.990 4.578 326 194.9 64.4 18.50 84.5 35.61 1.06 21
22 6.00310 750.8 0.00474 262.93 403.26 1.2105 1.6860 4.846 5.519 4.976 314 193.6 62.7 18.85 83.4 37.52 0.93 22
23 6.14400 738.4 0.00453 266.68 400.63 1.2225 1.6749 5.248 6.185 5.472 302 192.3 60.9 19.23 82.4 39.74 0.80 23
24 6.28770 725.0 0.00433 270.61 397.70 1.2352 1.6629 5.767 7.049 6.107 288 190.8 59.0 19.66 81.5 42.35 0.67 24
25 6.43420 710.5 0.00412 274.78 394.43 1.2485 1.6498 6.467 8.212 6.949 274 189.1 57.0 20.16 80.8 45.51 0.55 25
26 6.58370 694.5 0.00391 279.26 390.71 1.2627 1.6353 7.460 9.862 8.121 259 187.2 55.0 20.73 80.5 49.44 0.44 26
27 6.73610 676.4 0.00369 284.14 386.39 1.2783 1.6189 8.970 12.38 9.870 243 185.0 52.8 21.42 80.7 54.56 0.33 27
28 6.89180 655.3 0.00346 289.62 381.20 1.2958 1.5999 11.550 16.69 12.780 225 182.1 50.3 22.27 81.9 61.73 0.23 28
29 7.05090 629.4 0.00320 296.07 374.61 1.3163 1.5763 16.950 25.74 18.630 205 178.2 47.5 23.41 85.2 73.19 0.13 29
30 7.21370 593.3 0.00290 304.55 365.13 1.3435 1.5433 35.340 55.82 36.660 177 171.3 43.8 25.17 95.4 98.02 0.05 30
30.98c 7.37730 467.6 0.00214 332.25 332.25 1.4336 1.4336 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 30.98
*Temperatures on ITS-90 scale aTriple point cCritical point

Fig.19Pressure-EnthalpyDiagramforRefrigerant50(Methane)
Pressure

Refrigerant 50 (Methane) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–182.46a 0.01170 451.5 3.9881 –71.82 472.44 –0.7099 5.2911 3.368 2.110 1.341 1539 249.1 204.5 3.64 211.2 8.85 18.76 –182.46
–180 0.01590 448.2 3.0071 –63.53 477.22 –0.6199 5.1853 3.377 2.118 1.343 1516 252.2 189.5 3.73 208.3 9.15 18.09 –180
–175 0.02823 441.4 1.7755 –46.58 486.76 –0.4429 4.9910 3.399 2.137 1.348 1470 258.0 163.9 3.93 202.1 9.78 16.74 –175
–170 0.04723 434.5 1.1081 –29.49 495.99 –0.2735 4.8208 3.426 2.162 1.355 1422 263.4 143.4 4.12 195.5 10.42 15.43 –170
–165 0.07509 427.4 0.72466 –12.24 504.85 –0.1108 4.6704 3.457 2.192 1.365 1373 268.3 126.8 4.32 188.7 11.09 14.17 –165
–161.48b 0.10133 422.4 0.55054 0.00 510.83 0.0000 4.5746 3.481 2.218 1.373 1338 271.5 116.8 4.46 183.9 11.58 13.30 –161.48
–160 0.11429 420.2 0.49291 5.19 513.28 0.0459 4.5363 3.492 2.229 1.377 1323 272.7 112.9 4.52 181.8 11.79 12.94 –160
–155 0.16757 412.7 0.34665 22.82 521.22 0.1973 4.4156 3.533 2.274 1.392 1273 276.5 101.3 4.73 174.8 12.53 11.75 –155
–150 0.23784 405.0 0.25077 40.69 528.60 0.3440 4.3058 3.580 2.328 1.412 1221 279.7 91.4 4.95 167.7 13.30 10.60 –150
–145 0.32817 397.1 0.18583 58.84 535.34 0.4866 4.2049 3.635 2.393 1.436 1168 282.3 82.8 5.17 160.5 14.13 9.49 –145
–140 0.44177 388.8 0.14054 77.30 541.38 0.6257 4.1111 3.701 2.472 1.466 1114 284.3 75.2 5.40 153.4 15.01 8.43 –140
–135 0.58192 380.2 0.10813 96.13 546.63 0.7618 4.0228 3.780 2.569 1.504 1059 285.6 68.6 5.63 146.3 15.96 7.42 –135
–130 0.75201 371.1 0.08440 115.39 550.97 0.8956 3.9384 3.876 2.690 1.552 1002 286.2 62.7 5.88 139.2 16.99 6.44 –130
–125 0.95550 361.6 0.06666 135.17 554.29 1.0276 3.8566 3.996 2.842 1.613 943 286.2 57.3 6.15 132.1 18.13 5.52 –125
–120 1.1959 351.4 0.05315 155.58 556.43 1.1585 3.7759 4.148 3.038 1.694 882 285.4 52.4 6.43 125.0 19.39 4.64 –120
–118 1.3033 347.2 0.04865 163.94 556.91 1.2108 3.7437 4.220 3.133 1.733 858 284.8 50.5 6.55 122.1 19.95 4.31 –118
–116 1.4174 342.8 0.04457 172.44 557.16 1.2631 3.7112 4.302 3.240 1.777 832 284.2 48.7 6.68 119.3 20.53 3.98 –116
–114 1.5384 338.3 0.04087 181.08 557.15 1.3155 3.6785 4.393 3.362 1.827 807 283.4 47.0 6.81 116.4 21.15 3.66 –114
–112 1.6668 333.6 0.03750 189.88 556.87 1.3681 3.6454 4.497 3.501 1.885 780 282.5 45.3 6.95 113.5 21.81 3.35 –112
–110 1.8026 328.8 0.03442 198.85 556.28 1.4209 3.6117 4.615 3.662 1.951 754 281.4 43.6 7.09 110.7 22.52 3.04 –110
–108 1.9462 323.7 0.03160 208.03 555.37 1.4741 3.5773 4.751 3.848 2.028 726 280.2 42.0 7.24 107.8 23.28 2.75 –108
–106 2.0978 318.4 0.02900 217.42 554.09 1.5278 3.5419 4.910 4.068 2.119 698 278.9 40.4 7.40 104.9 24.12 2.46 –106
–104 2.2578 312.9 0.02662 227.06 552.39 1.5821 3.5054 5.097 4.331 2.227 670 277.4 38.8 7.57 102.0 25.05 2.19 –104
–102 2.4264 307.1 0.02441 236.99 550.24 1.6372 3.4675 5.322 4.650 2.358 641 275.7 37.2 7.76 99.0 26.09 1.92 –102
–100 2.6040 301.0 0.02236 247.25 547.56 1.6934 3.4278 5.596 5.044 2.520 610 273.9 35.6 7.96 96.1 27.28 1.66 –100
–95 3.0895 283.6 0.01781 274.80 537.86 1.8408 3.3174 6.654 6.608 3.153 529 268.4 31.7 8.55 88.6 31.27 1.07 –95
–90 3.6399 261.7 0.01384 306.71 521.52 2.0062 3.1791 9.10 10.37 4.64 437 261.3 27.5 9.39 81.2 38.68 0.55 –90
–85 4.2648 227.5 0.00993 349.75 488.81 2.2241 2.9632 21.88 30.57 12.16 320 250.2 22.3 10.95 77.5 62.99 0.13 –85
–82.59c 4.5992 162.7 0.00615 415.59 415.59 2.5624 2.5624 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 –82.59
Refrigerant 50 (Methane) Properties of Gas at 0.101 325 MPa (one standard atmosphere)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp , kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp , kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
–161.5a 1.8164 510.83 4.5746 2.218 1.373 271.5 4.46 11.58 50 0.6058 966.50 6.8565 2.293 1.295 465.1 11.98 37.86
–160 1.7899 514.11 4.6037 2.208 1.371 273.5 4.52 11.74 60 0.5875 989.57 6.9269 2.321 1.290 471.4 12.29 39.35
–155 1.7064 525.08 4.6986 2.183 1.366 280.3 4.71 12.30 70 0.5703 1012.92 6.9959 2.350 1.285 477.6 12.60 40.87
–150 1.6310 535.95 4.7887 2.165 1.362 286.9 4.90 12.87 80 0.5541 1036.57 7.0638 2.380 1.281 483.7 12.90 42.42
–145 1.5626 546.74 4.8746 2.151 1.359 293.2 5.10 13.45 90 0.5388 1060.52 7.1307 2.411 1.276 489.6 13.20 44.01
–140 1.5000 557.47 4.9567 2.141 1.356 299.4 5.29 14.03 100 0.5243 1084.79 7.1967 2.443 1.271 495.5 13.49 45.63
–135 1.4425 568.15 5.0355 2.132 1.354 305.4 5.48 14.62 110 0.5106 1109.39 7.2617 2.476 1.266 501.2 13.79 47.28
–130 1.3894 578.79 5.1112 2.125 1.351 311.2 5.67 15.21 120 0.4975 1134.32 7.3259 2.510 1.262 506.8 14.08 48.96
–120 1.2947 599.99 5.2543 2.116 1.348 322.5 6.06 16.40 130 0.4852 1159.60 7.3894 2.545 1.257 512.3 14.36 50.67
–110 1.2124 621.11 5.3879 2.109 1.345 333.3 6.44 17.58 140 0.4734 1185.22 7.4522 2.580 1.253 517.7 14.64 52.41
–100 1.1403 642.18 5.5133 2.106 1.343 343.8 6.81 18.77 150 0.4622 1211.21 7.5143 2.616 1.248 523.1 14.92 54.18
–90 1.0764 663.23 5.6315 2.104 1.341 353.8 7.19 19.96 160 0.4515 1237.55 7.5759 2.652 1.244 528.3 15.20 55.97
–80 1.0194 684.27 5.7433 2.105 1.339 363.5 7.56 21.15 170 0.4413 1264.25 7.6368 2.689 1.240 533.5 15.47 57.79
–70 0.9683 705.33 5.8496 2.107 1.337 372.9 7.92 22.31 180 0.4315 1291.32 7.6972 2.726 1.236 538.6 15.74 59.63
–60 0.9221 726.42 5.9509 2.111 1.335 382.0 8.29 23.49 190 0.4222 1318.76 7.7571 2.763 1.232 543.7 16.01 61.50
–50 0.8802 747.57 6.0479 2.118 1.332 390.7 8.64 24.68 200 0.4132 1346.57 7.8165 2.800 1.228 548.7 16.28 63.39
–40 0.8419 768.78 6.1409 2.126 1.330 399.2 9.00 25.89 210 0.4047 1374.76 7.8755 2.837 1.224 553.6 16.54 65.30
–30 0.8069 790.10 6.2304 2.137 1.327 407.5 9.35 27.12 220 0.3965 1403.32 7.9340 2.875 1.221 558.5 16.80 67.23
–20 0.7747 811.53 6.3168 2.149 1.324 415.4 9.69 28.36 230 0.3886 1432.26 7.9921 2.912 1.217 563.4 17.06 69.18
–10 0.7450 833.09 6.4003 2.164 1.320 423.2 10.03 29.63 240 0.3810 1461.57 8.0498 2.950 1.214 568.2 17.31 71.15
0 0.7175 854.82 6.4814 2.181 1.316 430.7 10.37 30.93 250 0.3737 1491.26 8.1071 2.988 1.211 572.9 17.56 73.14
10 0.6919 876.72 6.5601 2.200 1.312 437.9 10.70 32.25 260 0.3667 1521.32 8.1640 3.025 1.207 577.6 17.81 75.14
20 0.6682 898.82 6.6368 2.221 1.308 445.0 11.02 33.61 270 0.3599 1551.76 8.2205 3.062 1.204 582.3 18.06 77.16
30 0.6460 921.14 6.7117 2.243 1.304 451.9 11.35 34.99 280 0.3534 1582.57 8.2768 3.100 1.201 586.9 18.31 79.20
40 0.6252 943.69 6.7849 2.268 1.299 458.6 11.66 36.41 290 0.3471 1613.75 8.3326 3.137 1.198 591.5 18.55 81.25
300 0.3411 1645.31 8.3882 3.174 1.196 596.0 18.79 83.31
aSaturated vapor at normal boiling point

Fig.20Pressure-EnthalpyDiagramforRefrigerant170(Ethane)
Pressure

Refrigerant 170 (Ethane) Properties of Saturated Liquid and Saturated Vapor
Temp.,a
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp/cv
Vapor
VelocityofSound,
m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,
–175 0.00001 643.0 3649.3 –201.26 384.73 –1.4643 4.5060 2.288 1.184 1.305 1952 188.2 933.9 3.26 249.4 3.35 30.35 –175
–170 0.00002 637.5 1353.1 –189.85 390.67 –1.3510 4.2770 2.277 1.194 1.302 1916 192.7 783.6 3.41 245.2 3.64 29.51 –170
–165 0.00005 632.0 555.95 –178.48 396.66 –1.2433 4.0747 2.273 1.204 1.298 1880 197.0 669.0 3.55 240.8 3.93 28.67 –165
–160 0.00013 626.5 249.56 –167.11 402.69 –1.1405 3.8953 2.274 1.215 1.295 1844 201.3 579.6 3.70 236.3 4.23 27.83 –160
–155 0.00027 621.0 120.95 –155.73 408.76 –1.0421 3.7356 2.278 1.226 1.292 1808 205.4 508.5 3.84 231.6 4.54 26.99 –155
–150 0.00054 615.5 62.674 –144.33 414.87 –0.9476 3.5932 2.283 1.238 1.289 1772 209.4 450.9 3.99 226.9 4.86 26.15 –150
–145 0.00103 609.9 34.435 –132.89 421.00 –0.8566 3.4657 2.290 1.251 1.287 1735 213.3 403.6 4.14 222.1 5.18 25.31 –145
–140 0.00185 604.3 19.920 –121.42 427.16 –0.7688 3.3513 2.299 1.265 1.284 1699 217.0 364.1 4.29 217.3 5.50 24.48 –140
–135 0.00316 598.7 12.060 –109.90 433.34 –0.6839 3.2484 2.308 1.279 1.282 1663 220.7 330.8 4.44 212.4 5.84 23.64 –135
–130 0.00519 593.0 7.6020 –98.34 439.53 –0.6017 3.1557 2.318 1.293 1.280 1626 224.2 302.4 4.59 207.5 6.18 22.81 –130
–125 0.00821 587.3 4.9668 –86.72 445.71 –0.5219 3.0719 2.328 1.307 1.278 1589 227.6 277.8 4.74 202.5 6.54 21.98 –125
–120 0.01255 581.5 3.3504 –75.04 451.89 –0.4445 2.9962 2.340 1.320 1.277 1552 230.9 256.4 4.90 197.6 6.90 21.15 –120
–115 0.01863 575.7 2.3254 –63.31 458.04 –0.3691 2.9274 2.353 1.333 1.277 1515 234.0 237.6 5.05 192.7 7.28 20.33 –115
–110 0.02691 569.8 1.6556 –51.50 464.15 –0.2957 2.8649 2.366 1.347 1.277 1478 237.0 220.9 5.21 187.7 7.67 19.51 –110
–105 0.03793 563.9 1.2060 –39.62 470.20 –0.2241 2.8078 2.381 1.362 1.278 1440 239.7 206.0 5.36 182.8 8.07 18.69 –105
–100 0.05230 557.9 0.89662 –27.66 476.16 –0.1542 2.7556 2.397 1.380 1.280 1403 242.3 192.5 5.52 178.0 8.48 17.88 –100
–95 0.07068 551.8 0.67900 –15.61 482.04 –0.0858 2.7076 2.415 1.401 1.282 1365 244.7 180.4 5.68 173.1 8.92 17.07 –95
–90 0.09380 545.6 0.52278 –3.46 487.79 –0.0188 2.6635 2.434 1.425 1.286 1326 246.9 169.3 5.84 168.3 9.36 16.26 –90
–88.58b 0.10132 543.8 0.48676 0.00 489.40 0.0000 2.6516 2.439 1.433 1.287 1316 247.4 166.4 5.89 167.0 9.49 16.03 –88.58
–85 0.12243 539.3 0.40856 8.79 493.42 0.0469 2.6227 2.455 1.454 1.290 1288 248.8 159.2 6.00 163.6 9.83 15.46 –85
–80 0.15741 532.9 0.32361 21.15 498.91 0.1115 2.5850 2.478 1.487 1.295 1249 250.4 149.9 6.16 158.9 10.31 14.67 –80
–78 0.17338 530.3 0.29583 26.13 501.07 0.1370 2.5707 2.487 1.501 1.297 1234 251.0 146.4 6.23 157.0 10.51 14.35 –78
–76 0.19055 527.7 0.27094 31.13 503.20 0.1623 2.5567 2.497 1.515 1.300 1218 251.6 143.0 6.30 155.2 10.72 14.04 –76
–74 0.20899 525.1 0.24859 36.16 505.30 0.1875 2.5432 2.508 1.531 1.302 1203 252.1 139.6 6.36 153.3 10.92 13.72 –74
–72 0.22877 522.5 0.22847 41.20 507.38 0.2125 2.5300 2.519 1.546 1.305 1187 252.5 136.4 6.43 151.5 11.13 13.41 –72
–70 0.24993 519.8 0.21033 46.27 509.43 0.2373 2.5172 2.530 1.562 1.308 1171 252.9 133.3 6.50 149.7 11.35 13.09 –70
–68 0.27255 517.1 0.19394 51.36 511.45 0.2621 2.5048 2.542 1.579 1.312 1156 253.3 130.3 6.56 147.9 11.56 12.78 –68
–66 0.29668 514.4 0.17909 56.48 513.44 0.2867 2.4926 2.554 1.596 1.315 1140 253.6 127.3 6.63 146.0 11.79 12.47 –66
–64 0.32238 511.6 0.16563 61.62 515.40 0.3111 2.4808 2.567 1.614 1.319 1124 253.9 124.4 6.70 144.2 12.01 12.16 –64
–62 0.34972 508.9 0.15339 66.79 517.34 0.3355 2.4692 2.580 1.633 1.323 1108 254.2 121.6 6.77 142.4 12.24 11.86 –62
–60 0.37877 506.1 0.14224 71.99 519.23 0.3597 2.4580 2.594 1.651 1.327 1092 254.3 118.9 6.84 140.6 12.48 11.55 –60
–58 0.40958 503.2 0.13208 77.21 521.10 0.3838 2.4470 2.608 1.671 1.331 1076 254.5 116.2 6.91 138.9 12.72 11.24 –58
–56 0.44223 500.4 0.12279 82.47 522.93 0.4078 2.4362 2.623 1.691 1.336 1060 254.6 113.6 6.99 137.1 12.96 10.94 –56
–54 0.47677 497.5 0.11429 87.75 524.73 0.4317 2.4257 2.638 1.711 1.342 1044 254.6 111.1 7.06 135.3 13.21 10.63 –54
–52 0.51328 494.6 0.10650 93.07 526.48 0.4556 2.4154 2.654 1.732 1.347 1028 254.6 108.6 7.13 133.6 13.46 10.33 –52
–50 0.55183 491.6 0.09935 98.42 528.20 0.4793 2.4053 2.671 1.754 1.353 1012 254.6 106.2 7.21 131.8 13.73 10.03 –50
–48 0.59247 488.7 0.09277 103.80 529.88 0.5029 2.3954 2.689 1.777 1.359 996 254.5 103.9 7.28 130.1 13.99 9.73 –48
–46 0.63529 485.7 0.08671 109.22 531.52 0.5265 2.3856 2.707 1.800 1.366 979 254.4 101.5 7.36 128.4 14.26 9.44 –46
–44 0.68034 482.6 0.08113 114.68 533.11 0.5500 2.3760 2.726 1.824 1.373 963 254.2 99.3 7.44 126.7 14.54 9.14 –44
–42 0.72770 479.5 0.07597 120.18 534.66 0.5735 2.3666 2.746 1.850 1.381 947 253.9 97.1 7.51 125.0 14.83 8.85 –42
–40 0.77744 476.4 0.07120 125.71 536.16 0.5969 2.3573 2.767 1.876 1.390 930 253.6 94.9 7.59 123.3 15.12 8.55 –40
–38 0.82963 473.2 0.06679 131.29 537.60 0.6202 2.3481 2.789 1.904 1.399 914 253.2 92.8 7.68 121.6 15.42 8.26 –38
–36 0.88433 470.0 0.06269 136.91 539.00 0.6435 2.3390 2.812 1.932 1.408 897 252.8 90.7 7.76 119.9 15.73 7.97 –36
–34 0.94163 466.7 0.05889 142.57 540.34 0.6668 2.3301 2.836 1.963 1.419 880 252.4 88.7 7.84 118.2 16.04 7.68 –34
–32 1.0016 463.4 0.05536 148.28 541.62 0.6900 2.3211 2.862 1.995 1.430 864 251.8 86.7 7.93 116.6 16.37 7.40 –32
–30 1.0643 460.0 0.05207 154.04 542.85 0.7133 2.3123 2.889 2.028 1.442 847 251.2 84.7 8.02 114.9 16.70 7.11 –30
–28 1.1298 456.6 0.04900 159.86 544.00 0.7365 2.3035 2.918 2.064 1.455 830 250.6 82.7 8.11 113.3 17.05 6.83 –28
–26 1.1982 453.1 0.04614 165.72 545.10 0.7597 2.2947 2.948 2.102 1.469 813 249.9 80.8 8.20 111.6 17.40 6.55 –26
–24 1.2696 449.6 0.04347 171.64 546.12 0.7829 2.2859 2.980 2.142 1.485 796 249.1 79.0 8.30 110.0 17.77 6.27 –24
–22 1.3440 446.0 0.04097 177.62 547.06 0.8062 2.2772 3.014 2.185 1.501 778 248.3 77.1 8.40 108.4 18.15 6.00 –22
–20 1.4215 442.3 0.03863 183.67 547.93 0.8295 2.2684 3.050 2.231 1.519 761 247.4 75.3 8.50 106.7 18.55 5.72 –20
–18 1.5023 438.5 0.03644 189.78 548.72 0.8528 2.2596 3.089 2.281 1.539 744 246.4 73.5 8.61 105.1 18.96 5.45 –18
–16 1.5863 434.7 0.03439 195.95 549.41 0.8761 2.2507 3.130 2.334 1.561 726 245.4 71.8 8.71 103.5 19.38 5.18 –16
–14 1.6737 430.8 0.03245 202.20 550.02 0.8996 2.2417 3.175 2.392 1.584 708 244.3 70.0 8.83 101.9 19.83 4.92 –14
–12 1.7645 426.8 0.03064 208.53 550.52 0.9231 2.2326 3.223 2.455 1.610 690 243.1 68.3 8.94 100.3 20.29 4.65 –12
–10 1.8588 422.6 0.02892 214.94 550.91 0.9467 2.2234 3.275 2.523 1.639 672 241.9 66.6 9.07 98.7 20.78 4.39 –10
–8 1.9568 418.4 0.02731 221.43 551.19 0.9704 2.2140 3.331 2.598 1.671 654 240.6 64.9 9.19 97.1 21.30 4.13 –8
–6 2.0585 414.1 0.02579 228.02 551.35 0.9942 2.2045 3.393 2.681 1.706 635 239.2 63.3 9.33 95.6 21.84 3.88 –6
–4 2.1640 409.7 0.02435 234.71 551.37 1.0182 2.1947 3.460 2.773 1.746 617 237.7 61.6 9.46 94.0 22.41 3.63 –4
–2 2.2734 405.1 0.02298 241.50 551.24 1.0423 2.1847 3.534 2.875 1.791 598 236.1 60.0 9.61 92.4 23.02 3.38 –2
0 2.3867 400.3 0.02169 248.41 550.96 1.0667 2.1743 3.617 2.990 1.841 579 234.5 58.4 9.77 90.8 23.68 3.13 0
5 2.6883 387.7 0.01874 266.27 549.46 1.1287 2.1468 3.871 3.352 2.001 531 229.9 54.3 10.20 86.9 25.53 2.54 5
10 3.0172 373.7 0.01612 285.14 546.55 1.1928 2.1161 4.227 3.878 2.236 480 224.8 50.3 10.71 83.0 27.85 1.97 10
15 3.3755 357.9 0.01377 305.36 541.71 1.2602 2.0804 4.773 4.713 2.611 427 218.9 46.2 11.34 79.0 30.90 1.43 15
20 3.7655 339.0 0.01160 327.57 533.99 1.3328 2.0369 5.746 6.249 3.299 368 212.1 41.8 12.17 75.2 35.30 0.93 20
25 4.1903 315.0 0.00952 353.26 521.20 1.4152 1.9785 8.05 10.02 4.96 302 204.1 37.0 13.38 72.0 42.79 0.48 25
30 4.6551 276.3 0.00723 388.24 494.95 1.5263 1.8783 21.69 32.79 14.35 220 192.0 30.6 15.75 74.9 64.07 0.11 30
32.17c 4.8722 206.2 0.00485 438.99 438.99 1.6901 1.6901 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 32.17

Fig.21Pressure-EnthalpyDiagramforRefrigerant290(Propane)
PressurePressure

Refrigerant 290 (Propane) Properties of Saturated Liquid and Saturated Vapor
Temp.,
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp/cv
Vapor
VelocityofSound,
m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,
–150 0.00001 694.6 4316.4 –123.78 402.06 –0.6903 3.5796 1.962 1.020 1.227 1880 168.8 1343.0 3.55 192.9 3.68 31.84 –150
–140 0.00003 684.5 864.49 –104.09 412.43 –0.5366 3.3426 1.977 1.054 1.218 1813 174.9 985.4 3.80 187.7 4.28 30.29 –140
–130 0.00012 674.4 223.53 –84.23 423.12 –0.3929 3.1514 1.994 1.087 1.210 1745 180.7 761.7 4.05 182.2 4.90 28.76 –130
–120 0.00041 664.3 70.785 –64.21 434.11 –0.2576 2.9962 2.012 1.119 1.203 1679 186.3 611.6 4.31 176.4 5.55 27.24 –120
–110 0.00116 654.0 26.386 –43.99 445.38 –0.1298 2.8697 2.032 1.151 1.197 1612 191.7 505.0 4.56 170.4 6.23 25.73 –110
–100 0.00290 643.7 11.231 –23.56 456.88 –0.0083 2.7664 2.054 1.184 1.192 1545 196.8 425.7 4.82 164.4 6.94 24.23 –100
–90 0.00645 633.3 5.3300 –2.90 468.58 0.1077 2.6820 2.078 1.220 1.188 1478 201.5 364.5 5.08 158.2 7.67 22.74 –90
–80 0.01305 622.8 2.7676 18.03 480.44 0.2189 2.6130 2.106 1.258 1.184 1411 205.9 315.9 5.34 152.1 8.43 21.27 –80
–70 0.02440 612.0 1.5487 39.25 492.41 0.3259 2.5566 2.137 1.300 1.182 1345 209.9 276.4 5.60 145.9 9.22 19.81 –70
–60 0.04269 601.1 0.92250 60.81 504.44 0.4294 2.5107 2.172 1.346 1.181 1278 213.5 243.6 5.85 139.8 10.04 18.37 –60
–50 0.07057 589.9 0.57905 82.75 516.48 0.5298 2.4734 2.212 1.397 1.182 1213 216.5 216.0 6.11 133.8 10.88 16.94 –50
–42.11b 0.10133 580.9 0.41388 100.36 525.95 0.6070 2.4491 2.246 1.440 1.183 1161 218.4 197.2 6.31 129.2 11.57 15.83 –42.11
–40 0.11112 578.4 0.37985 105.12 528.48 0.6275 2.4433 2.256 1.453 1.184 1147 218.9 192.6 6.36 128.0 11.76 15.54 –40
–38 0.12105 576.1 0.35076 109.65 530.87 0.6468 2.4380 2.265 1.464 1.185 1134 219.3 188.3 6.41 126.8 11.94 15.26 –38
–36 0.13166 573.8 0.32437 114.20 533.26 0.6660 2.4330 2.275 1.476 1.185 1121 219.6 184.1 6.47 125.6 12.12 14.98 –36
–34 0.14297 571.4 0.30037 118.77 535.64 0.6851 2.4282 2.285 1.488 1.186 1108 220.0 180.1 6.52 124.5 12.30 14.70 –34
–32 0.15502 569.0 0.27853 123.36 538.01 0.7041 2.4236 2.295 1.501 1.187 1095 220.3 176.1 6.57 123.3 12.48 14.42 –32
–30 0.16783 566.6 0.25861 127.97 540.38 0.7231 2.4192 2.305 1.513 1.188 1082 220.6 172.3 6.62 122.2 12.67 14.15 –30
–28 0.18144 564.2 0.24041 132.61 542.75 0.7419 2.4150 2.316 1.526 1.189 1069 220.9 168.6 6.67 121.1 12.86 13.87 –28
–26 0.19589 561.8 0.22376 137.26 545.11 0.7607 2.4109 2.327 1.539 1.191 1056 221.1 165.0 6.73 120.0 13.05 13.60 –26
–24 0.21119 559.4 0.20851 141.94 547.46 0.7795 2.4071 2.338 1.553 1.192 1043 221.3 161.5 6.78 118.8 13.24 13.33 –24
–22 0.22739 556.9 0.19452 146.64 549.80 0.7982 2.4034 2.349 1.566 1.193 1030 221.5 158.1 6.83 117.7 13.43 13.06 –22
–20 0.24452 554.5 0.18167 151.36 552.13 0.8168 2.3999 2.361 1.580 1.195 1016 221.6 154.7 6.89 116.6 13.63 12.79 –20
–18 0.26261 552.0 0.16984 156.11 554.46 0.8353 2.3965 2.373 1.595 1.197 1003 221.8 151.5 6.94 115.5 13.83 12.52 –18
–16 0.28170 549.5 0.15894 160.88 556.77 0.8538 2.3933 2.385 1.609 1.198 990 221.8 148.3 6.99 114.4 14.03 12.25 –16
–14 0.30181 546.9 0.14889 165.68 559.08 0.8722 2.3903 2.397 1.624 1.200 977 221.9 145.2 7.05 113.4 14.23 11.98 –14
–12 0.32300 544.4 0.13961 170.50 561.37 0.8906 2.3874 2.410 1.639 1.202 964 221.9 142.2 7.10 112.3 14.44 11.71 –12
–10 0.34528 541.8 0.13103 175.35 563.65 0.9090 2.3846 2.423 1.655 1.205 951 221.9 139.3 7.16 111.2 14.65 11.45 –10
–8 0.36870 539.2 0.12308 180.22 565.92 0.9273 2.3819 2.436 1.671 1.207 938 221.8 136.4 7.22 110.1 14.86 11.18 –8
–6 0.39329 536.6 0.11571 185.12 568.18 0.9455 2.3794 2.450 1.687 1.209 925 221.8 133.6 7.27 109.1 15.08 10.92 –6
–4 0.41909 533.9 0.10887 190.05 570.42 0.9637 2.3769 2.464 1.704 1.212 912 221.6 130.9 7.33 108.0 15.29 10.65 –4
–2 0.44613 531.3 0.10252 195.01 572.65 0.9819 2.3746 2.478 1.721 1.215 899 221.5 128.2 7.39 107.0 15.52 10.39 –2
0 0.47446 528.6 0.09661 200.00 574.87 1.0000 2.3724 2.493 1.739 1.218 885 221.3 125.6 7.45 106.0 15.74 10.13 0
2 0.50410 525.9 0.09111 205.02 577.06 1.0181 2.3703 2.508 1.757 1.221 872 221.1 123.0 7.51 104.9 15.97 9.87 2
4 0.53510 523.1 0.08598 210.06 579.24 1.0362 2.3682 2.524 1.776 1.225 859 220.8 120.5 7.57 103.9 16.20 9.62 4
6 0.56749 520.4 0.08120 215.14 581.41 1.0542 2.3663 2.540 1.795 1.229 846 220.5 118.1 7.63 102.9 16.44 9.36 6
8 0.60131 517.6 0.07673 220.25 583.55 1.0722 2.3644 2.556 1.815 1.232 833 220.2 115.7 7.69 101.9 16.68 9.10 8
10 0.63660 514.7 0.07255 225.40 585.67 1.0902 2.3626 2.573 1.835 1.237 819 219.8 113.3 7.75 100.9 16.93 8.85 10
12 0.67340 511.9 0.06865 230.57 587.77 1.1082 2.3608 2.591 1.856 1.241 806 219.3 111.0 7.82 99.9 17.18 8.60 12
14 0.71175 509.0 0.06498 235.79 589.85 1.1261 2.3592 2.609 1.878 1.246 793 218.9 108.8 7.88 99.0 17.44 8.34 14
16 0.75168 506.0 0.06155 241.03 591.91 1.1440 2.3575 2.627 1.901 1.251 780 218.4 106.6 7.95 98.0 17.70 8.09 16
18 0.79324 503.1 0.05833 246.32 593.94 1.1620 2.3560 2.646 1.925 1.256 766 217.8 104.4 8.02 97.0 17.97 7.85 18
20 0.83646 500.1 0.05530 251.64 595.95 1.1799 2.3544 2.666 1.949 1.262 753 217.2 102.3 8.09 96.1 18.24 7.60 20
22 0.88139 497.0 0.05246 256.99 597.93 1.1978 2.3529 2.687 1.975 1.268 739 216.6 100.2 8.16 95.1 18.53 7.35 22
24 0.92807 493.9 0.04978 262.39 599.88 1.2157 2.3514 2.708 2.001 1.275 726 215.9 98.1 8.23 94.2 18.81 7.11 24
26 0.97653 490.8 0.04726 267.83 601.80 1.2336 2.3500 2.730 2.029 1.282 713 215.2 96.1 8.31 93.3 19.11 6.87 26
28 1.0268 487.6 0.04488 273.31 603.68 1.2515 2.3486 2.753 2.058 1.290 699 214.4 94.1 8.38 92.3 19.41 6.62 28
30 1.0790 484.4 0.04264 278.83 605.54 1.2695 2.3471 2.777 2.088 1.298 685 213.5 92.2 8.46 91.4 19.72 6.38 30
32 1.1331 481.1 0.04053 284.40 607.35 1.2874 2.3457 2.802 2.119 1.307 672 212.6 90.3 8.54 90.5 20.05 6.15 32
34 1.1891 477.8 0.03853 290.01 609.13 1.3053 2.3443 2.827 2.152 1.316 658 211.7 88.4 8.63 89.6 20.38 5.91 34
36 1.2472 474.4 0.03664 295.68 610.87 1.3233 2.3429 2.855 2.187 1.326 645 210.7 86.5 8.71 88.7 20.72 5.68 36
38 1.3072 471.0 0.03485 301.39 612.57 1.3413 2.3414 2.883 2.224 1.337 631 209.7 84.7 8.80 87.8 21.07 5.44 38
40 1.3694 467.5 0.03315 307.15 614.21 1.3594 2.3399 2.913 2.263 1.349 617 208.6 82.8 8.89 86.9 21.43 5.21 40
42 1.4337 463.9 0.03154 312.96 615.81 1.3774 2.3384 2.944 2.304 1.362 603 207.4 81.0 8.99 86.0 21.81 4.98 42
44 1.5002 460.3 0.03002 318.83 617.36 1.3955 2.3368 2.977 2.348 1.375 589 206.2 79.3 9.08 85.2 22.20 4.76 44
46 1.5690 456.5 0.02857 324.76 618.86 1.4137 2.3352 3.012 2.395 1.391 575 204.9 77.5 9.19 84.3 22.60 4.53 46
48 1.6400 452.7 0.02720 330.75 620.29 1.4319 2.3335 3.050 2.445 1.407 561 203.6 75.8 9.29 83.5 23.03 4.31 48
50 1.7133 448.9 0.02589 336.80 621.66 1.4502 2.3317 3.089 2.499 1.425 547 202.2 74.1 9.40 82.6 23.47 4.09 50
55 1.9072 438.8 0.02288 352.23 624.77 1.4962 2.3268 3.201 2.652 1.478 511 198.3 69.8 9.70 80.5 24.65 3.55 55
60 2.1168 428.0 0.02020 368.14 627.36 1.5429 2.3210 3.337 2.841 1.548 474 194.1 65.7 10.03 78.4 26.00 3.02 60
65 2.3430 416.3 0.01781 384.60 629.29 1.5903 2.3139 3.509 3.086 1.641 437 189.3 61.5 10.42 76.3 27.56 2.52 65
70 2.5868 403.6 0.01565 401.75 630.37 1.6389 2.3052 3.735 3.421 1.773 398 184.0 57.4 10.86 74.3 29.41 2.03 70
75 2.8493 389.5 0.01367 419.76 630.33 1.6891 2.2939 4.053 3.914 1.970 358 178.2 53.2 11.40 72.2 31.71 1.56 75
80 3.1319 373.3 0.01185 438.93 628.73 1.7417 2.2791 4.545 4.707 2.288 315 171.6 48.8 12.07 70.2 34.75 1.12 80
85 3.4361 354.0 0.01012 459.81 624.75 1.7980 2.2586 5.433 6.182 2.883 269 164.1 44.1 12.96 68.3 39.13 0.72 85
90 3.7641 328.8 0.00840 483.71 616.47 1.8616 2.2272 7.623 9.888 4.374 218 155.5 38.8 14.28 67.1 46.66 0.36 90
95 4.1195 286.5 0.00640 516.33 595.81 1.9476 2.1635 23.59 36.07 14.62 158 144.1 31.4 17.00 73.6 69.48 0.06 95
96.74c 4.2512 220.5 0.00454 555.24 555.24 2.0516 2.0516 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 96.74
bNormal boiling point cCritical point

Fig.22Pressure-EnthalpyDiagramforRefrigerant600(n-Butane)
Pressure

Refrigerant 600 (n-Butane) Properties of Saturated Liquid and Saturated Vapor
Temp.,a
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp/cv
Vapor
VelocityofSound,
m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,
–100 0.00016 699.3 150.44 –13.65 450.85 0.0318 2.7144 2.013 1.231 1.132 1592 167.4 792.2 4.30 161.6 6.83 28.03 –100
–95 0.00028 694.6 91.606 –3.57 457.02 0.0892 2.6746 2.021 1.247 1.130 1563 169.6 719.0 4.43 159.4 7.12 27.33 –95
–90 0.00045 689.9 57.588 6.56 463.27 0.1453 2.6389 2.029 1.263 1.128 1534 171.8 655.9 4.55 157.2 7.43 26.64 –90
–85 0.00072 685.2 37.271 16.73 469.58 0.2000 2.6069 2.038 1.279 1.127 1505 174.0 601.2 4.68 154.9 7.73 25.94 –85
–80 0.00111 680.5 24.773 26.94 475.97 0.2536 2.5784 2.048 1.295 1.125 1477 176.1 553.2 4.81 152.6 8.05 25.26 –80
–75 0.00168 675.8 16.873 37.21 482.41 0.3061 2.5529 2.058 1.312 1.124 1449 178.1 510.9 4.93 150.2 8.38 24.57 –75
–70 0.00247 671.0 11.752 47.53 488.92 0.3575 2.5303 2.069 1.330 1.122 1420 180.1 473.4 5.06 147.9 8.71 23.89 –70
–65 0.00355 666.2 8.3565 57.90 495.50 0.4080 2.5103 2.081 1.347 1.121 1392 182.1 439.9 5.18 145.5 9.05 23.22 –65
–60 0.00501 661.4 6.0558 68.34 502.13 0.4575 2.4926 2.094 1.366 1.120 1364 184.0 409.8 5.31 143.1 9.40 22.54 –60
–55 0.00695 656.6 4.4659 78.85 508.82 0.5062 2.4772 2.108 1.385 1.119 1336 185.8 382.8 5.43 140.8 9.75 21.88 –55
–50 0.00947 651.7 3.3470 89.42 515.56 0.5541 2.4638 2.122 1.404 1.118 1309 187.5 358.3 5.55 138.4 10.11 21.21 –50
–45 0.01270 646.8 2.5462 100.07 522.35 0.6013 2.4522 2.137 1.425 1.118 1281 189.2 336.1 5.68 136.0 10.48 20.55 –45
–40 0.01679 641.9 1.9638 110.80 529.19 0.6478 2.4423 2.153 1.446 1.117 1253 190.8 315.8 5.80 133.6 10.86 19.90 –40
–35 0.02190 636.9 1.5341 121.62 536.08 0.6937 2.4340 2.170 1.468 1.117 1226 192.3 297.3 5.92 131.3 11.25 19.25 –35
–30 0.02821 631.9 1.2127 132.52 543.01 0.7389 2.4271 2.188 1.490 1.116 1198 193.8 280.3 6.04 128.9 11.64 18.60 –30
–25 0.03591 626.8 0.96911 143.51 549.98 0.7836 2.4216 2.206 1.514 1.116 1171 195.1 264.7 6.16 126.6 12.05 17.96 –25
–20 0.04521 621.7 0.78237 154.60 556.98 0.8278 2.4173 2.226 1.538 1.116 1144 196.3 250.3 6.28 124.3 12.46 17.32 –20
–15 0.05635 616.6 0.63759 165.79 564.02 0.8715 2.4141 2.246 1.563 1.117 1116 197.5 237.0 6.41 122.0 12.88 16.69 –15
–10 0.06955 611.4 0.52415 177.08 571.08 0.9147 2.4120 2.267 1.589 1.117 1089 198.5 224.7 6.53 119.8 13.30 16.06 –10
–5 0.08509 606.1 0.43441 188.48 578.17 0.9576 2.4108 2.289 1.616 1.118 1062 199.4 213.2 6.65 117.5 13.74 15.44 –5
–0.49b 0.10132 601.3 0.36910 198.87 584.58 0.9959 2.4105 2.310 1.641 1.119 1038 200.1 203.5 6.76 115.5 14.14 14.88 –0.49
0 0.10323 600.7 0.36275 200.00 585.27 1.0000 2.4105 2.312 1.644 1.119 1035 200.2 202.5 6.77 115.3 14.19 14.82 0
2 0.11127 598.6 0.33818 204.64 588.12 1.0169 2.4106 2.321 1.655 1.120 1024 200.5 198.4 6.82 114.4 14.37 14.58 2
4 0.11980 596.4 0.31562 209.30 590.97 1.0337 2.4108 2.331 1.667 1.120 1014 200.7 194.4 6.87 113.6 14.55 14.33 4
6 0.12882 594.2 0.29488 213.98 593.82 1.0505 2.4112 2.341 1.678 1.121 1003 201.0 190.6 6.91 112.7 14.74 14.09 6
8 0.13837 592.0 0.27578 218.68 596.67 1.0672 2.4116 2.350 1.690 1.122 992 201.2 186.8 6.96 111.8 14.93 13.85 8
10 0.14845 589.8 0.25817 223.40 599.53 1.0838 2.4122 2.360 1.702 1.122 981 201.4 183.2 7.01 111.0 15.11 13.60 10
12 0.15909 587.6 0.24192 228.13 602.38 1.1005 2.4129 2.371 1.715 1.123 971 201.6 179.6 7.06 110.1 15.31 13.36 12
14 0.17031 585.4 0.22691 232.89 605.24 1.1170 2.4137 2.381 1.727 1.124 960 201.7 176.1 7.11 109.3 15.50 13.12 14
16 0.18213 583.1 0.21302 237.68 608.09 1.1335 2.4146 2.391 1.740 1.125 949 201.9 172.7 7.16 108.4 15.69 12.88 16
18 0.19457 580.9 0.20016 242.48 610.95 1.1500 2.4156 2.402 1.752 1.126 938 202.0 169.4 7.21 107.6 15.89 12.65 18
20 0.20765 578.6 0.18823 247.30 613.80 1.1665 2.4167 2.413 1.765 1.127 928 202.0 166.2 7.26 106.7 16.09 12.41 20
22 0.22139 576.3 0.17717 252.15 616.66 1.1829 2.4179 2.424 1.778 1.128 917 202.1 163.0 7.31 105.9 16.29 12.17 22
24 0.23582 574.0 0.16688 257.02 619.51 1.1992 2.4191 2.435 1.792 1.129 906 202.1 159.9 7.36 105.1 16.49 11.94 24
26 0.25095 571.7 0.15732 261.91 622.36 1.2155 2.4205 2.446 1.805 1.130 895 202.2 156.9 7.41 104.3 16.70 11.70 26
28 0.26680 569.3 0.14842 266.82 625.21 1.2318 2.4219 2.458 1.819 1.131 885 202.1 153.9 7.47 103.5 16.90 11.47 28
30 0.28341 567.0 0.14012 271.76 628.06 1.2481 2.4234 2.470 1.833 1.133 874 202.1 151.1 7.52 102.7 17.11 11.24 30
32 0.30079 564.6 0.13238 276.72 630.91 1.2643 2.4250 2.481 1.847 1.134 863 202.0 148.2 7.57 101.9 17.33 11.00 32
34 0.31897 562.2 0.12516 281.71 633.75 1.2805 2.4266 2.494 1.862 1.136 853 201.9 145.5 7.62 101.1 17.54 10.77 34
36 0.33796 559.8 0.11841 286.72 636.59 1.2966 2.4283 2.506 1.876 1.137 842 201.8 142.8 7.68 100.3 17.76 10.54 36
38 0.35779 557.4 0.11209 291.76 639.42 1.3127 2.4301 2.518 1.891 1.139 831 201.7 140.2 7.73 99.5 17.98 10.32 38
40 0.37849 554.9 0.10618 296.82 642.25 1.3288 2.4319 2.531 1.906 1.141 820 201.5 137.6 7.79 98.7 18.21 10.09 40
42 0.40007 552.4 0.10065 301.90 645.08 1.3449 2.4338 2.544 1.922 1.143 810 201.3 135.0 7.84 97.9 18.43 9.86 42
44 0.42256 550.0 0.09545 307.02 647.90 1.3609 2.4358 2.557 1.937 1.145 799 201.1 132.5 7.90 97.2 18.66 9.64 44
46 0.44599 547.4 0.09058 312.15 650.71 1.3769 2.4378 2.571 1.953 1.147 788 200.8 130.1 7.95 96.4 18.90 9.41 46
48 0.47038 544.9 0.08600 317.32 653.52 1.3929 2.4398 2.585 1.970 1.149 777 200.5 127.7 8.01 95.7 19.14 9.19 48
50 0.49575 542.3 0.08170 322.51 656.32 1.4089 2.4419 2.598 1.986 1.151 767 200.2 125.4 8.07 94.9 19.38 8.97 50
55 0.56365 535.8 0.07201 335.62 663.28 1.4488 2.4473 2.635 2.029 1.158 740 199.2 119.7 8.22 93.1 20.00 8.42 55
60 0.63824 529.1 0.06366 348.91 670.19 1.4885 2.4529 2.673 2.075 1.165 713 198.1 114.3 8.38 91.3 20.64 7.87 60
65 0.71991 522.3 0.05642 362.39 677.02 1.5282 2.4587 2.713 2.123 1.173 685 196.7 109.1 8.54 89.5 21.32 7.34 65
70 0.80908 515.2 0.05012 376.06 683.77 1.5679 2.4646 2.756 2.174 1.183 658 195.1 104.1 8.71 87.8 22.03 6.81 70
75 0.90616 507.9 0.04462 389.95 690.41 1.6075 2.4705 2.802 2.229 1.194 631 193.3 99.3 8.89 86.1 22.77 6.29 75
80 1.0116 500.4 0.03978 404.06 696.94 1.6471 2.4765 2.851 2.288 1.207 603 191.2 94.7 9.08 84.5 23.56 5.78 80
85 1.1258 492.6 0.03552 418.40 703.32 1.6868 2.4824 2.905 2.353 1.223 575 188.8 90.2 9.29 82.9 24.39 5.28 85
90 1.2493 484.5 0.03175 433.00 709.53 1.7266 2.4881 2.964 2.425 1.241 546 186.1 85.8 9.51 81.3 25.28 4.79 90
95 1.3825 476.0 0.02840 447.87 715.53 1.7665 2.4936 3.029 2.506 1.263 518 183.1 81.6 9.75 79.7 26.23 4.31 95
100 1.5259 467.1 0.02541 463.03 721.29 1.8066 2.4987 3.102 2.599 1.290 488 179.8 77.4 10.01 78.2 27.26 3.84 100
105 1.6801 457.8 0.02273 478.51 726.75 1.8469 2.5034 3.186 2.708 1.324 458 176.1 73.3 10.29 76.8 28.37 3.38 105
110 1.8456 447.9 0.02032 494.36 731.87 1.8876 2.5075 3.285 2.841 1.366 428 172.0 69.3 10.61 75.3 29.60 2.93 110
115 2.0230 437.3 0.01813 510.61 736.55 1.9287 2.5108 3.403 3.004 1.420 396 167.5 65.4 10.96 73.9 30.96 2.50 115
120 2.2131 425.9 0.01615 527.34 740.69 1.9704 2.5131 3.552 3.213 1.492 364 162.5 61.4 11.37 72.5 32.50 2.08 120
125 2.4166 413.4 0.01432 544.65 744.15 2.0129 2.5140 3.748 3.493 1.592 331 157.0 57.4 11.83 71.1 34.29 1.68 125
130 2.6344 399.6 0.01264 562.68 746.70 2.0566 2.5130 4.023 3.891 1.739 296 150.8 53.4 12.39 69.8 36.44 1.30 130
135 2.8675 383.7 0.01105 581.69 747.97 2.1020 2.5094 4.450 4.511 1.973 260 144.1 49.2 13.07 68.4 39.16 0.94 135
140 3.1172 364.7 0.00953 602.17 747.29 2.1502 2.5015 5.227 5.631 2.405 222 136.5 44.7 13.97 67.3 42.94 0.60 140
145 3.3853 339.9 0.00801 625.32 743.11 2.2041 2.4858 7.147 8.349 3.462 182 128.0 39.6 15.27 66.7 49.21 0.31 145
150 3.6746 297.7 0.00621 656.27 729.01 2.2755 2.4474 19.80 25.55 10.14 136 117.8 32.5 17.87 73.0 67.32 0.06 150
151.98c 3.7960 228.0 0.00439 693.91 693.91 2.3631 2.3631 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 151.98

Fig.23Pressure-EnthalpyDiagramforRefrigerant600a(Isobutane)
Pressure

Refrigerant 600a (Isobutane) Properties of Saturated Liquid and Saturated Vapor
Temp.,a
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp/cv
Vapor
VelocityofSound,
m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,
–100 0.00038 683.9 65.234 –6.40 428.19 0.0671 2.5770 1.878 1.131 1.145 1558 168.3 936.5 4.40 140.0 6.03 25.52 –100
–95 0.00062 679.1 41.078 3.04 433.86 0.1208 2.5391 1.894 1.151 1.143 1526 170.5 837.2 4.53 138.0 6.39 24.88 –95
–90 0.00098 674.2 26.648 12.55 439.62 0.1734 2.5052 1.911 1.171 1.140 1494 172.6 753.2 4.65 136.0 6.76 24.24 –90
–85 0.00151 669.4 17.764 22.14 445.46 0.2251 2.4750 1.927 1.191 1.138 1462 174.7 681.3 4.78 134.0 7.13 23.59 –85
–80 0.00227 664.5 12.140 31.82 451.39 0.2759 2.4481 1.944 1.212 1.136 1431 176.7 619.2 4.91 131.9 7.50 22.96 –80
–75 0.00333 659.5 8.4874 41.59 457.40 0.3258 2.4242 1.961 1.233 1.134 1400 178.7 565.3 5.03 129.8 7.88 22.32 –75
–70 0.00478 654.6 6.0592 51.44 463.48 0.3749 2.4031 1.979 1.254 1.132 1370 180.6 518.1 5.16 127.7 8.27 21.68 –70
–65 0.00671 649.6 4.4096 61.38 469.63 0.4232 2.3845 1.997 1.276 1.130 1340 182.4 476.6 5.28 125.6 8.67 21.05 –65
–60 0.00927 644.6 3.2662 71.41 475.86 0.4708 2.3683 2.015 1.298 1.129 1309 184.2 439.8 5.41 123.5 9.06 20.41 –60
–55 0.01258 639.5 2.4590 81.54 482.14 0.5177 2.3541 2.034 1.321 1.128 1280 185.9 407.0 5.53 121.3 9.47 19.78 –55
–50 0.01680 634.4 1.8792 91.76 488.49 0.5640 2.3419 2.054 1.344 1.126 1250 187.5 377.6 5.65 119.2 9.88 19.16 –50
–45 0.02211 629.3 1.4561 102.09 494.89 0.6098 2.3315 2.074 1.368 1.126 1220 189.0 351.2 5.78 117.1 10.29 18.53 –45
–40 0.02870 624.1 1.1427 112.51 501.35 0.6549 2.3227 2.094 1.393 1.125 1191 190.4 327.4 5.90 115.0 10.71 17.91 –40
–35 0.03680 618.9 0.90737 123.04 507.85 0.6995 2.3154 2.115 1.418 1.125 1162 191.8 305.8 6.02 112.9 11.14 17.29 –35
–30 0.04662 613.6 0.72839 133.68 514.40 0.7437 2.3095 2.137 1.444 1.125 1133 193.0 286.2 6.14 110.8 11.57 16.67 –30
–25 0.05843 608.3 0.59062 144.43 520.99 0.7874 2.3048 2.159 1.471 1.125 1104 194.1 268.3 6.26 108.7 12.01 16.05 –25
–20 0.07248 602.9 0.48339 155.30 527.61 0.8306 2.3013 2.182 1.499 1.125 1075 195.1 251.9 6.38 106.6 12.45 15.44 –20
–15 0.08905 597.4 0.39904 166.29 534.26 0.8735 2.2989 2.206 1.527 1.126 1047 196.0 236.9 6.50 104.6 12.90 14.83 –15
–11.75b 0.10133 593.8 0.35378 173.49 538.60 0.9012 2.2979 2.222 1.547 1.126 1028 196.5 227.8 6.58 103.3 13.20 14.44 –11.75
–10 0.10845 591.9 0.33204 177.40 540.93 0.9160 2.2975 2.231 1.557 1.127 1018 196.8 223.1 6.62 102.6 13.36 14.23 –10
–5 0.13098 586.3 0.27833 188.63 547.63 0.9582 2.2969 2.256 1.587 1.128 990 197.4 210.3 6.74 100.6 13.83 13.63 –5
0 0.15696 580.6 0.23491 200.00 554.34 1.0000 2.2972 2.283 1.619 1.130 961 197.9 198.6 6.86 98.6 14.30 13.03 0
2 0.16839 578.3 0.21989 204.59 557.02 1.0167 2.2975 2.293 1.632 1.131 950 198.0 194.1 6.91 97.9 14.49 12.79 2
4 0.18045 576.0 0.20604 209.19 559.71 1.0333 2.2980 2.304 1.645 1.132 939 198.2 189.8 6.96 97.1 14.68 12.55 4
6 0.19316 573.6 0.19324 213.82 562.40 1.0498 2.2985 2.316 1.658 1.132 928 198.3 185.6 7.01 96.3 14.88 12.32 6
8 0.20654 571.3 0.18140 218.47 565.09 1.0663 2.2992 2.327 1.672 1.133 916 198.3 181.5 7.06 95.5 15.07 12.08 8
10 0.22061 568.9 0.17044 223.15 567.78 1.0828 2.3000 2.338 1.686 1.135 905 198.4 177.5 7.11 94.8 15.27 11.84 10
12 0.23541 566.5 0.16028 227.85 570.47 1.0993 2.3008 2.350 1.699 1.136 894 198.4 173.7 7.16 94.0 15.47 11.61 12
14 0.25094 564.2 0.15086 232.57 573.15 1.1157 2.3018 2.362 1.714 1.137 883 198.4 170.0 7.21 93.3 15.67 11.38 14
16 0.26724 561.7 0.14210 237.32 575.84 1.1320 2.3028 2.374 1.728 1.138 871 198.4 166.3 7.26 92.5 15.88 11.14 16
18 0.28432 559.3 0.13395 242.09 578.52 1.1484 2.3039 2.386 1.743 1.140 860 198.3 162.8 7.31 91.8 16.08 10.91 18
20 0.30222 556.9 0.12637 246.88 581.21 1.1647 2.3051 2.398 1.757 1.141 849 198.2 159.3 7.37 91.1 16.29 10.68 20
22 0.32095 554.4 0.11930 251.70 583.89 1.1810 2.3064 2.411 1.772 1.143 838 198.1 156.0 7.42 90.3 16.50 10.45 22
24 0.34054 551.9 0.11271 256.55 586.56 1.1972 2.3078 2.424 1.788 1.144 826 198.0 152.7 7.47 89.6 16.72 10.22 24
26 0.36102 549.4 0.10655 261.42 589.24 1.2134 2.3093 2.437 1.803 1.146 815 197.8 149.5 7.52 88.9 16.93 9.99 26
28 0.38240 546.9 0.10080 266.32 591.91 1.2296 2.3108 2.450 1.819 1.148 804 197.6 146.5 7.58 88.2 17.15 9.76 28
30 0.40472 544.3 0.09542 271.24 594.57 1.2458 2.3123 2.463 1.835 1.150 793 197.4 143.4 7.63 87.5 17.37 9.53 30
32 0.42800 541.7 0.09038 276.19 597.23 1.2619 2.3140 2.477 1.852 1.152 781 197.1 140.5 7.69 86.8 17.59 9.31 32
34 0.45226 539.1 0.08566 281.17 599.88 1.2780 2.3157 2.491 1.869 1.154 770 196.8 137.6 7.74 86.1 17.82 9.08 34
36 0.47753 536.5 0.08124 286.18 602.53 1.2941 2.3174 2.505 1.886 1.157 759 196.5 134.8 7.80 85.4 18.05 8.86 36
38 0.50384 533.9 0.07708 291.22 605.17 1.3102 2.3192 2.520 1.903 1.159 747 196.2 132.1 7.85 84.7 18.29 8.63 38
40 0.53121 531.2 0.07317 296.28 607.80 1.3263 2.3211 2.535 1.921 1.162 736 195.8 129.4 7.91 84.1 18.52 8.41 40
42 0.55966 528.5 0.06950 301.37 610.43 1.3423 2.3230 2.550 1.939 1.165 725 195.3 126.8 7.97 83.4 18.77 8.19 42
44 0.58923 525.8 0.06605 306.50 613.04 1.3583 2.3249 2.566 1.958 1.168 714 194.9 124.2 8.03 82.7 19.01 7.97 44
46 0.61995 523.0 0.06279 311.65 615.65 1.3744 2.3269 2.582 1.977 1.171 702 194.4 121.7 8.09 82.1 19.26 7.75 46
48 0.65182 520.2 0.05973 316.84 618.24 1.3904 2.3289 2.598 1.997 1.174 691 193.9 119.3 8.15 81.4 19.52 7.53 48
50 0.68490 517.4 0.05683 322.06 620.82 1.4064 2.3309 2.615 2.017 1.178 680 193.3 116.9 8.22 80.8 19.78 7.31 50
55 0.77299 510.2 0.05029 335.25 627.22 1.4464 2.3361 2.659 2.069 1.188 651 191.7 111.1 8.38 79.2 20.45 6.78 55
60 0.86916 502.7 0.04459 348.66 633.53 1.4863 2.3414 2.706 2.125 1.199 622 189.9 105.6 8.56 77.6 21.16 6.24 60
65 0.97386 495.0 0.03962 362.29 639.72 1.5263 2.3467 2.757 2.186 1.213 593 187.8 100.3 8.74 76.1 21.92 5.72 65
70 1.0875 487.0 0.03525 376.17 645.77 1.5664 2.3520 2.812 2.252 1.229 564 185.4 95.2 8.94 74.6 22.72 5.21 70
75 1.2107 478.6 0.03140 390.31 651.64 1.6065 2.3572 2.874 2.326 1.248 535 182.7 90.4 9.16 73.2 23.59 4.71 75
80 1.3438 469.9 0.02799 404.73 657.31 1.6469 2.3621 2.942 2.409 1.272 505 179.7 85.6 9.39 71.8 24.53 4.21 80
85 1.4874 460.7 0.02496 419.46 662.73 1.6874 2.3667 3.020 2.507 1.301 475 176.3 81.0 9.65 70.4 25.56 3.73 85
90 1.6420 451.1 0.02226 434.54 667.86 1.7283 2.3708 3.110 2.625 1.338 444 172.6 76.6 9.95 69.1 26.70 3.26 90
95 1.8081 440.7 0.01983 450.00 672.62 1.7696 2.3743 3.217 2.769 1.385 413 168.4 72.1 10.27 67.8 27.98 2.80 95
100 1.9865 429.6 0.01764 465.90 676.94 1.8114 2.3769 3.347 2.951 1.447 381 163.8 67.8 10.65 66.6 29.44 2.36 100
105 2.1778 417.6 0.01565 482.33 680.70 1.8539 2.3785 3.513 3.189 1.531 348 158.7 63.4 11.09 65.4 31.14 1.93 105
110 2.3826 404.3 0.01383 499.39 683.74 1.8974 2.3785 3.736 3.517 1.650 313 153.1 59.0 11.62 64.2 33.18 1.53 110
115 2.6019 389.4 0.01214 517.26 685.81 1.9423 2.3765 4.059 4.002 1.831 278 146.9 54.5 12.27 63.1 35.72 1.14 115
120 2.8366 372.0 0.01056 536.26 686.46 1.9893 2.3714 4.585 4.806 2.139 240 139.9 49.8 13.09 62.2 39.05 0.78 120
125 3.0880 350.6 0.00902 557.01 684.81 2.0400 2.3610 5.629 6.428 2.770 200 132.1 44.6 14.22 61.8 43.91 0.46 125
130 3.3578 321.0 0.00742 581.26 678.44 2.0985 2.3396 8.91 11.56 4.77 156 123.0 38.5 15.99 63.3 52.88 0.18 130
134.66c 3.6290 225.5 0.00443 633.94 633.94 2.2259 2.2259 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 134.66

Fig.24Pressure-EnthalpyDiagramforRefrigerant1150(Ethylene)

Refrigerant 1150 (Ethylene) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–169.16a 0.00012 654.6 252.640 –158.09 409.42 –1.1789 4.2787 2.429 1.187 1.333 1767 202.7 685.7 0.77 270.6 6.80 28.14 –169.16
–165 0.00025 649.3 129.690 –147.97 414.35 –1.0835 4.1160 2.432 1.188 1.333 1740 206.7 598.1 1.64 264.9 6.62 27.31 –165
–160 0.00053 643.0 62.7190 –135.81 420.24 –0.9736 3.9408 2.432 1.189 1.333 1707 211.3 514.5 2.47 258.1 6.59 26.33 –160
–155 0.00107 636.6 32.5570 –123.66 426.12 –0.8685 3.7848 2.429 1.191 1.334 1673 215.9 448.6 3.13 251.3 6.71 25.35 –155
–150 0.00203 630.1 17.9740 –111.52 431.97 –0.7679 3.6454 2.424 1.194 1.334 1639 220.3 395.8 3.66 244.5 6.92 24.38 –150
–145 0.00362 623.6 10.4720 –99.41 437.78 –0.6715 3.5204 2.419 1.198 1.335 1604 224.5 352.7 4.09 237.9 7.18 23.42 –145
–140 0.00614 617.1 6.39510 –87.33 443.54 –0.5790 3.4080 2.414 1.203 1.336 1569 228.6 317.2 4.44 231.2 7.47 22.47 –140
–135 0.01000 610.5 4.07100 –75.27 449.24 –0.4902 3.3065 2.409 1.210 1.337 1534 232.5 287.5 4.74 224.7 7.78 21.53 –135
–130 0.01565 603.8 2.68800 –63.22 454.85 –0.4046 3.2145 2.406 1.218 1.339 1498 236.3 262.3 5.00 218.3 8.09 20.59 –130
–125 0.02368 597.1 1.83310 –51.19 460.37 –0.3220 3.1310 2.404 1.228 1.341 1463 239.8 240.7 5.23 212.0 8.39 19.66 –125
–120 0.03474 590.3 1.28650 –39.16 465.79 –0.2423 3.0548 2.404 1.240 1.344 1427 243.2 222.0 5.44 205.8 8.70 18.74 –120
–115 0.04961 583.4 0.92612 –27.12 471.08 –0.1651 2.9850 2.406 1.254 1.348 1390 246.3 205.7 5.63 199.7 9.00 17.83 –115
–110 0.06911 576.5 0.68196 –15.06 476.22 –0.0903 2.9210 2.409 1.271 1.353 1354 249.2 191.3 5.81 193.7 9.30 16.93 –110
–105 0.09420 569.4 0.51239 –2.97 481.21 –0.0176 2.8619 2.416 1.290 1.358 1316 251.8 178.5 5.99 187.9 9.61 16.04 –105
–103.77b 0.10133 567.7 0.47899 0.00 482.41 0.0000 2.8481 2.418 1.295 1.360 1307 252.4 175.6 6.03 186.5 9.68 15.83 –103.77
–100 0.12585 562.2 0.39198 9.16 486.03 0.0532 2.8073 2.424 1.312 1.365 1279 254.2 167.0 6.16 182.2 9.92 15.16 –100
–98 0.14059 559.3 0.35377 14.02 487.90 0.0810 2.7866 2.429 1.321 1.368 1264 255.1 162.7 6.23 179.9 10.04 14.82 –98
–96 0.15662 556.4 0.32007 18.90 489.74 0.1085 2.7664 2.434 1.331 1.371 1249 255.9 158.6 6.30 177.7 10.17 14.47 –96
–94 0.17402 553.5 0.29026 23.79 491.55 0.1358 2.7468 2.439 1.342 1.375 1233 256.7 154.7 6.37 175.5 10.30 14.12 –94
–92 0.19285 550.5 0.26382 28.69 493.32 0.1628 2.7277 2.445 1.353 1.379 1218 257.4 150.9 6.44 173.3 10.44 13.78 –92
–90 0.21320 547.5 0.24030 33.60 495.06 0.1896 2.7092 2.451 1.365 1.383 1203 258.1 147.2 6.51 171.2 10.57 13.44 –90
–88 0.23514 544.5 0.21933 38.53 496.76 0.2161 2.6911 2.458 1.377 1.387 1187 258.7 143.6 6.58 169.0 10.71 13.10 –88
–86 0.25874 541.4 0.20058 43.48 498.43 0.2425 2.6734 2.465 1.391 1.392 1172 259.3 140.2 6.65 166.9 10.85 12.76 –86
–84 0.28409 538.4 0.18378 48.44 500.05 0.2686 2.6562 2.473 1.404 1.397 1156 259.9 136.9 6.72 164.8 11.00 12.42 –84
–82 0.31127 535.3 0.16869 53.41 501.64 0.2945 2.6394 2.482 1.419 1.402 1140 260.4 133.7 6.80 162.7 11.15 12.09 –82
–80 0.34034 532.2 0.15510 58.41 503.18 0.3202 2.6229 2.491 1.434 1.408 1125 260.8 130.6 6.87 160.7 11.30 11.75 –80
–78 0.37141 529.0 0.14284 63.43 504.68 0.3457 2.6069 2.501 1.450 1.414 1109 261.2 127.5 6.95 158.6 11.46 11.42 –78
–76 0.40454 525.8 0.13176 68.47 506.14 0.3711 2.5911 2.512 1.467 1.420 1093 261.5 124.6 7.02 156.6 11.62 11.09 –76
–74 0.43982 522.6 0.12172 73.53 507.55 0.3963 2.5757 2.524 1.484 1.427 1077 261.8 121.7 7.10 154.6 11.79 10.77 –74
–72 0.47733 519.3 0.11260 78.61 508.91 0.4214 2.5606 2.536 1.503 1.435 1061 262.1 118.9 7.18 152.6 11.96 10.44 –72
–70 0.51716 516.1 0.10431 83.72 510.23 0.4463 2.5457 2.549 1.522 1.443 1044 262.3 116.2 7.26 150.6 12.14 10.12 –70
–68 0.55939 512.7 0.09675 88.86 511.49 0.4710 2.5311 2.563 1.543 1.451 1028 262.4 113.6 7.34 148.6 12.33 9.80 –68
–66 0.60411 509.4 0.08985 94.03 512.70 0.4957 2.5168 2.578 1.565 1.460 1012 262.5 111.0 7.42 146.7 12.52 9.48 –66
–64 0.65141 506.0 0.08354 99.23 513.85 0.5202 2.5026 2.594 1.588 1.470 995 262.5 108.5 7.51 144.7 12.72 9.16 –64
–62 0.70136 502.5 0.07776 104.46 514.95 0.5446 2.4887 2.611 1.612 1.480 978 262.4 106.0 7.60 142.8 12.92 8.85 –62
–60 0.75406 499.0 0.07246 109.72 515.99 0.5689 2.4749 2.629 1.638 1.491 962 262.3 103.6 7.68 140.9 13.14 8.53 –60
–58 0.80960 495.5 0.06758 115.02 516.97 0.5932 2.4614 2.648 1.665 1.503 945 262.2 101.2 7.78 139.0 13.36 8.23 –58
–56 0.86807 491.9 0.06310 120.36 517.88 0.6173 2.4479 2.668 1.694 1.516 928 262.0 98.9 7.87 137.1 13.59 7.92 –56
–54 0.92955 488.2 0.05896 125.74 518.73 0.6414 2.4346 2.690 1.725 1.529 911 261.7 96.6 7.96 135.2 13.84 7.61 –54
–52 0.99414 484.5 0.05514 131.16 519.51 0.6654 2.4214 2.714 1.757 1.544 894 261.3 94.4 8.06 133.4 14.09 7.31 –52
–50 1.0619 480.8 0.05161 136.62 520.21 0.6894 2.4083 2.739 1.792 1.560 876 260.9 92.2 8.16 131.5 14.35 7.01 –50
–48 1.1330 476.9 0.04834 142.14 520.84 0.7133 2.3953 2.766 1.829 1.577 859 260.5 90.1 8.27 129.7 14.63 6.71 –48
–46 1.2075 473.0 0.04530 147.70 521.39 0.7372 2.3824 2.795 1.869 1.596 841 259.9 87.9 8.38 127.8 14.91 6.42 –46
–44 1.2854 469.1 0.04249 153.32 521.86 0.7611 2.3694 2.826 1.912 1.616 823 259.3 85.8 8.49 126.0 15.22 6.13 –44
–42 1.3669 465.0 0.03987 158.99 522.24 0.7850 2.3565 2.859 1.958 1.638 806 258.7 83.8 8.60 124.2 15.53 5.84 –42
–40 1.4521 460.9 0.03743 164.73 522.53 0.8089 2.3436 2.895 2.007 1.662 787 257.9 81.8 8.72 122.3 15.86 5.55 –40
–38 1.5410 456.7 0.03515 170.52 522.72 0.8328 2.3306 2.934 2.061 1.688 769 257.1 79.7 8.84 120.5 16.21 5.27 –38
–36 1.6339 452.4 0.03303 176.39 522.81 0.8568 2.3176 2.976 2.119 1.717 751 256.3 77.8 8.97 118.7 16.58 4.99 –36
–34 1.7307 448.0 0.03105 182.33 522.79 0.8809 2.3045 3.022 2.182 1.749 732 255.3 75.8 9.10 116.8 16.97 4.71 –34
–32 1.8315 443.5 0.02919 188.35 522.65 0.9050 2.2913 3.072 2.252 1.784 714 254.3 73.8 9.24 115.0 17.38 4.44 –32
–30 1.9366 438.9 0.02745 194.45 522.38 0.9292 2.2779 3.127 2.328 1.823 695 253.2 71.9 9.39 113.2 17.82 4.17 –30
–28 2.0459 434.1 0.02581 200.65 521.98 0.9535 2.2643 3.188 2.413 1.866 676 252.0 70.0 9.54 111.3 18.29 3.90 –28
–26 2.1596 429.2 0.02427 206.94 521.44 0.9780 2.2505 3.254 2.507 1.914 656 250.7 68.1 9.69 109.5 18.78 3.64 –26
–24 2.2779 424.2 0.02283 213.34 520.74 1.0027 2.2365 3.329 2.612 1.969 637 249.4 66.2 9.86 107.6 19.32 3.38 –24
–22 2.4008 419.0 0.02146 219.85 519.86 1.0276 2.2221 3.412 2.731 2.031 617 248.0 64.3 10.04 105.8 19.90 3.13 –22
–20 2.5284 413.6 0.02017 226.49 518.80 1.0527 2.2074 3.506 2.866 2.101 596 246.4 62.4 10.22 103.9 20.53 2.88 –20
–18 2.6610 408.0 0.01895 233.27 517.53 1.0781 2.1922 3.612 3.021 2.182 576 244.8 60.5 10.42 102.0 21.22 2.63 –18
–16 2.7985 402.2 0.01780 240.21 516.04 1.1039 2.1765 3.735 3.200 2.277 555 243.1 58.7 10.63 100.0 21.98 2.39 –16
–14 2.9412 396.1 0.01670 247.32 514.28 1.1300 2.1602 3.878 3.411 2.387 533 241.3 56.8 10.86 98.1 22.83 2.15 –14
–12 3.0893 389.8 0.01565 254.63 512.24 1.1567 2.1431 4.046 3.661 2.520 511 239.3 54.9 11.10 96.1 23.78 1.92 –12
–10 3.2428 383.0 0.01466 262.17 509.87 1.1839 2.1252 4.247 3.965 2.680 489 237.3 52.9 11.36 94.1 24.88 1.70 –10
–8 3.4019 375.9 0.01370 269.96 507.10 1.2118 2.1062 4.493 4.339 2.877 465 235.1 51.0 11.65 92.0 26.15 1.48 –8
–6 3.5669 368.3 0.01278 278.07 503.89 1.2406 2.0859 4.802 4.815 3.127 441 232.8 49.0 11.98 89.9 27.66 1.26 –6
–4 3.7379 360.1 0.01189 286.56 500.12 1.2705 2.0640 5.201 5.438 3.452 416 230.3 46.9 12.34 87.8 29.52 1.06 –4
–2 3.9152 351.1 0.01103 295.51 495.66 1.3018 2.0400 5.739 6.291 3.894 390 227.6 44.8 12.75 85.6 31.88 0.86 –2
0 4.0990 341.2 0.01018 305.06 490.32 1.3350 2.0132 6.507 7.526 4.526 362 224.6 42.6 13.23 83.5 35.04 0.67 0
5 4.5896 308.8 0.00802 333.52 470.25 1.4327 1.9243 11.680 16.100 8.720 283 214.9 36.2 15.01 79.8 52.44 0.25 5
9.20c 5.0418 214.2 0.00467 399.43 399.43 1.6614 1.6614 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 9.20

Fig.25Pressure-EnthalpyDiagramforRefrigerant1270(Propylene)

Refrigerant 1270 (Propylene) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
°C
Pres-
sure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
–150 0.00001 727.9 2789.30000 –117.02 419.51 –0.6521 3.7046 1.834 0.991 1.249 1834 174.3 1324.0 3.51 179.9 4.60 33.49 –150
–140 0.00005 716.3 583.08000 –98.37 429.53 –0.5066 3.4582 1.893 1.015 1.242 1754 180.7 945.7 3.79 177.6 5.07 31.76 –140
–130 0.00018 704.9 156.04000 –79.20 439.78 –0.3677 3.2577 1.939 1.039 1.235 1683 186.9 718.7 4.06 175.0 5.55 30.05 –130
–120 0.00059 693.6 50.84700 –59.62 450.25 –0.2356 3.0936 1.974 1.064 1.229 1617 192.7 571.2 4.34 172.2 6.06 28.36 –120
–110 0.00166 682.2 19.42300 –39.73 460.91 –0.1098 2.9588 2.002 1.090 1.223 1554 198.3 468.9 4.62 169.1 6.60 26.69 –110
–100 0.00404 670.8 8.44420 –19.59 471.73 0.0100 2.8475 2.026 1.118 1.218 1493 203.5 394.1 4.90 165.8 7.16 25.04 –100
–90 0.00881 659.4 4.08250 0.80 482.68 0.1244 2.7555 2.050 1.149 1.214 1432 208.4 337.1 5.18 162.3 7.75 23.41 –90
–80 0.01754 647.8 2.15470 21.43 493.72 0.2341 2.6793 2.075 1.183 1.211 1370 212.9 292.2 5.46 158.6 8.36 21.80 –80
–70 0.03232 636.1 1.22310 42.34 504.79 0.3395 2.6159 2.103 1.220 1.209 1309 216.9 255.9 5.73 154.7 9.01 20.22 –70
–60 0.05578 624.1 0.73772 63.55 515.84 0.4412 2.5631 2.135 1.263 1.209 1247 220.4 226.1 6.01 150.6 9.69 18.66 –60
–50 0.09111 611.9 0.46816 85.11 526.79 0.5398 2.5191 2.171 1.309 1.211 1184 223.4 201.1 6.29 146.4 10.40 17.14 –50
–48 0.09991 609.4 0.42975 89.47 528.96 0.5592 2.5112 2.179 1.319 1.211 1171 223.9 196.6 6.35 145.6 10.55 16.83 –48
–47.69b 0.10133 609.1 0.42416 90.14 529.30 0.5621 2.5100 2.180 1.321 1.211 1169 224.0 195.9 6.36 145.4 10.58 16.79 –47.69
–46 0.10935 606.9 0.39515 93.84 531.13 0.5784 2.5035 2.187 1.330 1.212 1158 224.4 192.2 6.40 144.7 10.70 16.53 –46
–44 0.11949 604.4 0.36390 98.23 533.29 0.5976 2.4962 2.195 1.340 1.213 1145 224.8 188.0 6.46 143.8 10.86 16.23 –44
–42 0.13033 601.9 0.33564 102.64 535.45 0.6167 2.4891 2.203 1.351 1.214 1133 225.3 183.9 6.52 143.0 11.01 15.93 –42
–40 0.14192 599.4 0.31004 107.06 537.59 0.6356 2.4822 2.212 1.362 1.215 1120 225.7 179.9 6.57 142.1 11.17 15.63 –40
–38 0.15429 596.8 0.28680 111.51 539.73 0.6545 2.4756 2.221 1.373 1.216 1107 226.1 176.0 6.63 141.2 11.33 15.34 –38
–36 0.16748 594.3 0.26566 115.97 541.85 0.6733 2.4692 2.230 1.385 1.217 1094 226.4 172.3 6.69 140.3 11.49 15.04 –36
–34 0.18152 591.7 0.24642 120.45 543.97 0.6921 2.4630 2.239 1.396 1.218 1081 226.7 168.7 6.75 139.4 11.65 14.75 –34
–32 0.19644 589.1 0.22886 124.95 546.08 0.7107 2.4570 2.249 1.408 1.220 1068 227.0 165.1 6.80 138.5 11.82 14.45 –32
–30 0.21228 586.5 0.21282 129.47 548.17 0.7292 2.4512 2.259 1.421 1.221 1056 227.3 161.7 6.86 137.6 11.99 14.16 –30
–28 0.22908 583.8 0.19814 134.01 550.26 0.7477 2.4456 2.269 1.433 1.223 1043 227.5 158.4 6.92 136.7 12.16 13.87 –28
–26 0.24687 581.2 0.18469 138.57 552.33 0.7661 2.4402 2.279 1.446 1.225 1030 227.7 155.1 6.98 135.7 12.34 13.58 –26
–24 0.26569 578.5 0.17234 143.15 554.38 0.7845 2.4350 2.290 1.459 1.227 1017 227.9 152.0 7.04 134.8 12.52 13.29 –24
–22 0.28558 575.8 0.16100 147.76 556.43 0.8027 2.4299 2.300 1.473 1.229 1004 228.1 148.9 7.10 133.9 12.70 13.00 –22
–20 0.30657 573.1 0.15056 152.38 558.46 0.8209 2.4250 2.311 1.487 1.231 991 228.2 145.9 7.17 132.9 12.89 12.72 –20
–18 0.32871 570.4 0.14093 157.03 560.48 0.8391 2.4203 2.323 1.501 1.234 978 228.3 143.0 7.23 132.0 13.08 12.43 –18
–16 0.35203 567.6 0.13206 161.71 562.48 0.8571 2.4157 2.335 1.515 1.236 965 228.3 140.2 7.29 131.0 13.28 12.15 –16
–14 0.37657 564.8 0.12385 166.40 564.46 0.8752 2.4112 2.347 1.530 1.239 952 228.3 137.4 7.36 130.1 13.48 11.87 –14
–12 0.40237 562.0 0.11626 171.12 566.43 0.8931 2.4068 2.359 1.546 1.242 939 228.3 134.8 7.42 129.1 13.68 11.59 –12
–10 0.42947 559.2 0.10924 175.87 568.37 0.9111 2.4026 2.372 1.562 1.245 925 228.2 132.1 7.49 128.2 13.89 11.31 –10
–8 0.45791 556.3 0.10272 180.64 570.30 0.9289 2.3985 2.385 1.578 1.248 912 228.1 129.6 7.56 127.2 14.11 11.03 –8
–6 0.48773 553.5 0.09667 185.44 572.22 0.9468 2.3945 2.398 1.594 1.252 899 228.0 127.1 7.63 126.2 14.33 10.76 –6
–4 0.51897 550.6 0.09105 190.27 574.11 0.9645 2.3907 2.412 1.612 1.256 886 227.8 124.6 7.69 125.3 14.55 10.48 –4
–2 0.55167 547.6 0.08582 195.12 575.98 0.9823 2.3869 2.426 1.629 1.260 873 227.6 122.2 7.77 124.3 14.78 10.21 –2
0 0.58588 544.6 0.08094 200.00 577.82 1.0000 2.3832 2.441 1.648 1.264 860 227.4 119.9 7.84 123.3 15.02 9.94 0
2 0.62163 541.6 0.07640 204.91 579.65 1.0177 2.3796 2.456 1.666 1.268 847 227.1 117.6 7.91 122.3 15.27 9.67 2
4 0.65896 538.6 0.07216 209.85 581.45 1.0353 2.3761 2.471 1.686 1.273 834 226.7 115.4 7.99 121.3 15.52 9.40 4
6 0.69793 535.5 0.06820 214.82 583.22 1.0529 2.3726 2.487 1.706 1.278 820 226.4 113.2 8.07 120.3 15.79 9.13 6
8 0.73856 532.4 0.06449 219.83 584.97 1.0705 2.3693 2.504 1.726 1.284 807 226.0 111.1 8.15 119.3 16.06 8.87 8
10 0.78091 529.3 0.06102 224.86 586.69 1.0881 2.3660 2.521 1.748 1.289 794 225.5 109.0 8.23 118.3 16.33 8.60 10
12 0.82502 526.1 0.05777 229.93 588.39 1.1056 2.3627 2.538 1.770 1.296 781 225.0 106.9 8.31 117.3 16.62 8.34 12
14 0.87093 522.9 0.05472 235.03 590.05 1.1231 2.3595 2.557 1.793 1.302 767 224.5 104.9 8.4 116.3 16.92 8.08 14
16 0.91868 519.7 0.05186 240.17 591.68 1.1407 2.3563 2.575 1.817 1.309 754 223.9 102.9 8.48 115.3 17.23 7.82 16
18 0.96832 516.4 0.04917 245.34 593.28 1.1582 2.3532 2.595 1.842 1.316 741 223.3 101.0 8.57 114.3 17.55 7.56 18
20 1.01990 513.0 0.04664 250.55 594.84 1.1756 2.3501 2.615 1.867 1.324 727 222.6 99.1 8.67 113.3 17.88 7.31 20
22 1.07350 509.6 0.04426 255.8 596.37 1.1931 2.3470 2.637 1.894 1.333 714 221.9 97.2 8.76 112.2 18.22 7.05 22
24 1.12900 506.2 0.04202 261.09 597.86 1.2106 2.3440 2.659 1.923 1.342 701 221.1 95.4 8.86 111.2 18.58 6.80 24
26 1.18670 502.7 0.03990 266.42 599.31 1.2281 2.3409 2.682 1.952 1.351 687 220.3 93.6 8.97 110.2 18.95 6.55 26
28 1.24650 499.2 0.03791 271.79 600.72 1.2456 2.3378 2.706 1.983 1.362 674 219.4 91.8 9.06 109.2 19.34 6.31 28
30 1.30840 495.6 0.03602 277.21 602.08 1.2631 2.3348 2.731 2.015 1.373 661 218.5 90.0 9.17 108.1 19.74 6.06 30
32 1.37250 491.9 0.03424 282.67 603.40 1.2807 2.3317 2.757 2.049 1.385 647 217.5 88.3 9.28 107.1 20.15 5.82 32
34 1.43900 488.2 0.03255 288.18 604.67 1.2982 2.3286 2.785 2.085 1.398 634 216.5 86.6 9.40 106.0 20.58 5.58 34
36 1.50770 484.4 0.03095 293.74 605.88 1.3158 2.3255 2.814 2.123 1.412 620 215.4 84.9 9.52 105.0 21.03 5.34 36
38 1.57880 480.6 0.02944 299.35 607.05 1.3334 2.3223 2.845 2.163 1.427 606 214.3 83.3 9.64 104.0 21.50 5.10 38
40 1.65230 476.7 0.02801 305.01 608.15 1.3510 2.3191 2.878 2.206 1.443 593 213.1 81.6 9.77 102.9 22.00 4.86 40
42 1.72820 472.7 0.02664 310.72 609.19 1.3687 2.3158 2.913 2.251 1.460 579 211.8 80.0 9.91 101.9 22.52 4.63 42
44 1.80670 468.6 0.02535 316.50 610.17 1.3865 2.3124 2.950 2.300 1.480 565 210.5 78.4 10.05 100.8 23.06 4.40 44
46 1.88780 464.4 0.02412 322.34 611.07 1.4043 2.3090 2.990 2.352 1.501 552 209.1 76.8 10.20 99.7 23.63 4.17 46
48 1.97150 460.2 0.02295 328.24 611.90 1.4221 2.3054 3.032 2.408 1.523 538 207.7 75.2 10.36 98.7 24.24 3.95 48
50 2.05790 455.8 0.02183 334.21 612.65 1.4401 2.3017 3.078 2.469 1.549 524 206.2 73.6 10.52 97.6 24.88 3.73 50
55 2.28610 444.4 0.01926 349.47 614.13 1.4854 2.2919 3.211 2.644 1.624 488 202.2 69.7 10.97 94.9 26.63 3.18 55
60 2.53250 432.1 0.01696 365.26 614.95 1.5315 2.2809 3.380 2.868 1.723 452 197.7 65.8 11.49 92.2 28.67 2.65 60
65 2.79810 418.8 0.01490 381.71 614.94 1.5786 2.2683 3.604 3.163 1.859 415 192.8 61.9 12.10 89.4 31.07 2.15 65
70 3.08420 404.1 0.01302 399.01 613.87 1.6273 2.2535 3.921 3.578 2.055 377 187.4 57.9 12.83 86.6 33.94 1.67 70
75 3.39220 387.4 0.01130 417.46 611.33 1.6785 2.2353 4.416 4.213 2.363 337 181.3 53.7 13.73 83.8 37.50 1.21 75
80 3.72380 367.5 0.00967 437.66 606.61 1.7335 2.2120 5.315 5.332 2.918 294 174.7 49.1 14.90 81.1 42.14 0.79 80
85 4.08100 341.7 0.00808 461.03 598.06 1.7964 2.1790 7.507 7.921 4.221 248 167.2 43.8 16.55 79.2 48.98 0.41 85
90 4.46680 298.9 0.00630 493.45 579.55 1.8829 2.1200 20.390 21.470 11.110 195 159.2 36.3 19.59 81.9 64.05 0.10 90
92.42c 4.66460 223.4 0.00448 540.41 540.41 2.0097 2.0097 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 92.42
*Temperatures on IPTS-68 scale bNormal boiling point cCritical point

Fig.26Pressure-EnthalpyDiagramforRefrigerant702(NormalHydrogen)
Pressure

Refrigerant 702 (Normal Hydrogen) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
K
Absolute
Pressure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp ,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
KLiquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor
13.95a 0.00776 76.90 7.2871 218.1 667.4 14.082 46.224 07.78 10.90 1.669 1362 304.5 25.5 0.66 76.2 10.37 3.181 13.95
14 0.00797 76.86 7.1136 218.6 667.8 14.108 46.147 07.71 10.89 1.672 1360 305.1 25.3 0.67 76.7 10.43 3.171 14
15 0.01334 76.02 4.5226 226.3 676.9 14.610 44.697 7.15 10.86 1.701 1318 316.2 22.2 0.74 84.1 11.62 2.970 15
16 0.02113 75.12 3.0172 233.4 685.6 15.075 43.411 07.30 11.00 1.719 1272 325.2 19.8 0.81 90.1 12.68 2.771 16
17 0.03200 74.18 2.0940 240.9 693.7 15.530 42.260 07.72 11.19 1.739 1226 333.2 17.8 0.87 94.8 13.68 2.575 17
18 0.04663 73.20 1.5017 249.0 701.3 15.984 41.220 8.26 11.43 1.764 1185 340.6 16.2 0.94 98.4 14.67 2.381 18
19 0.06577 72.18 1.1068 257.8 708.3 16.441 40.270 08.85 11.71 1.795 1147 347.3 14.8 1.00 101.1 15.68 2.191 19
20 0.09020 71.11 0.83478 267.3 714.6 16.904 39.393 09.49 12.04 1.833 1111 353.3 13.6 1.06 103.0 16.72 2.003 20
20.39b 0.10132 70.67 0.75195 271.2 716.8 17.086 39.068 9.74 12.20 1.851 1097 355.4 13.2 1.08 103.6 17.13 1.931 20.39
21 0.12072 69.96 0.64193 277.4 720.1 17.374 38.576 10.15 12.46 1.881 1075 358.6 12.6 1.12 104.2 17.81 1.819 21
22 0.15816 68.73 0.50178 288.3 724.8 17.852 37.806 10.88 12.96 1.940 1039 363.2 11.6 1.18 104.9 18.96 1.638 22
23 0.20336 67.41 0.39766 299.9 728.4 18.340 37.074 11.68 13.58 2.013 1001 367.2 10.8 1.25 105.0 20.18 1.460 23
24 0.25717 65.98 0.31878 312.3 731.0 18.840 36.369 12.58 14.35 2.106 960 370.6 10.1 1.32 104.6 21.50 1.287 24
25 0.32045 64.43 0.25795 325.8 732.3 19.351 35.683 13.65 15.34 2.224 918 373.3 09.4 1.39 103.8 22.92 1.117 25
26 0.39404 62.75 0.21028 340.3 732.2 19.877 35.007 14.94 16.63 2.378 872 375.4 8.7 1.46 102.5 24.48 0.953 26
27 0.47879 60.91 0.17233 356.1 730.4 20.421 34.331 16.56 18.36 2.586 824 376.9 08.1 1.54 100.8 26.23 0.793 27
28 0.57555 58.87 0.14165 373.5 726.5 20.989 33.642 18.72 20.79 2.877 772 377.8 07.5 1.63 98.7 28.22 0.639 28
29 0.68516 56.55 0.11647 392.7 720.2 21.596 32.925 21.85 24.41 3.310 715 378.2 6.9 1.74 96.0 30.56 0.492 29
30 0.80844 53.76 0.09540 414.7 710.5 22.267 32.157 27.13 30.32 4.013 650 378.1 06.4 1.86 92.6 33.46 0.352 30
31 0.94620 50.17 0.07735 441.4 696.2 23.059 31.298 38.73 41.37 5.321 573 377.7 05.8 2.04 88.3 37.32 0.222 31
32 1.0993 44.89 0.06132 477.9 674.4 24.112 30.271 84.77 67.41 8.383 482 377.6 5.1 2.35 82.3 43.40 0.105 32
33 1.2684 34.38 0.04665 547.5 640.5 26.097 28.951 — — — — — — — — — 0.011 33
33.19c 1.3152 30.11 0.03321 577.2 577.2 26.962 26.962 ∞ ∞ ∞ 00 0 000.0 — — ∞ ∞ 0.000 33.19
*Temperatures on IPTS-68 scale aTriple point bNormal boiling point cCritical point
Refrigerant 702 (Normal Hydrogen) Properties of Gas at 0.101 325 MPa (one standard atmosphere)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp , kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp , kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
–252.8b 1.3299 0716.8 39.068 12.20 1.851 0355.4 1.08 017.10 000 0.0899 3843.3 69.168 14.20 1.410 1261.1 08.40 172.58
–250 1.1366 0749.3 40.564 11.45 1.793 0385.4 1.22 019.29 005 0.0883 3914.4 69.425 14.22 1.409 1272.1 08.50 175.07
–245 0.9089 805.0 42.744 10.91 1.744 431.8 1.47 23.26 10 0.0867 3985.5 69.679 14.24 1.408 1283.0 8.61 177.56
–240 0.7609 0859.0 44.508 10.69 1.720 0472.2 1.72 027.06 015 0.0852 4056.8 69.928 14.27 1.407 1293.9 08.71 180.05
–235 0.6557 0912.1 46.001 10.58 1.706 0508.7 1.95 030.62 020 0.0838 4128.2 70.174 14.29 1.406 1304.7 08.81 182.48
–230 0.5767 964.8 47.300 10.52 1.696 542.3 2.18 34.00 25 0.0824 4199.7 70.416 14.31 1.405 1315.4 8.92 184.88
–225 0.5150 1017.4 48.452 10.49 1.688 0573.6 2.40 037.23 030 0.0810 4271.3 70.654 14.32 1.405 1326.0 09.02 187.28
–220 0.4655 1069.7 49.487 10.47 1.682 0603.0 2.60 040.37 035 0.0797 4342.9 70.888 14.34 1.404 1336.6 09.12 189.67
–215 0.4247 1122.1 50.429 10.48 1.676 630.6 2.80 43.47 40 0.0784 4414.7 71.119 14.36 1.403 1347.1 9.22 192.01
–210 0.3906 1174.6 51.294 10.51 1.668 0656.6 2.98 046.55 045 0.0772 4486.5 71.347 14.37 1.403 1357.5 09.32 194.32
–200 0.3366 1280.1 52.845 10.62 1.650 0704.1 3.34 052.56 050 0.0760 4558.3 71.571 14.38 1.402 1367.9 09.42 196.78
–190 0.2958 1387.2 54.217 10.81 1.629 746.5 3.67 58.30 55 0.0748 4630.3 71.792 14.39 1.402 1378.2 9.52 199.33
–180 0.2639 1496.4 55.457 11.05 1.604 0784.7 3.98 064.12 060 0.0737 4702.3 72.010 14.40 1.401 1388.4 09.62 201.86
–170 0.2382 1608.2 56.597 11.32 1.580 0819.7 4.28 070.43 065 0.0726 4774.3 72.224 14.41 1.401 1398.6 09.72 204.37
–160 0.2171 1722.8 57.657 11.61 1.556 852.3 4.57 77.02 70 0.0716 4846.4 72.436 14.42 1.401 1408.7 9.81 206.88
–150 0.1994 1840.3 58.652 11.89 1.534 0883.2 4.85 083.56 075 0.0705 4918.5 72.644 14.43 1.400 1418.8 09.91 209.39
–140 0.1844 1960.7 59.592 12.17 1.515 0912.7 5.12 090.15 080 0.0695 4990.7 72.850 14.44 1.400 1428.8 10.01 211.88
–130 0.1715 2083.7 60.483 12.44 1.499 941.2 5.38 96.62 85 0.0686 5062.9 73.053 14.44 1.400 1438.7 10.10 214.34
–120 0.1603 2209.3 61.331 12.68 1.484 0968.8 5.64 103.03 090 0.0676 5135.1 73.254 14.45 1.400 1448.6 10.20 216.72
–110 0.1505 2337.3 62.140 12.90 1.471 0995.7 5.89 109.55 095 0.0667 5207.4 73.451 14.45 1.399 1458.4 10.29 219.04
–100 0.1418 2467.3 62.913 13.10 1.461 1022.1 6.14 115.95 100 0.0658 5279.7 73.646 14.46 1.399 1468.2 10.39 221.42
–90 0.1340 2599.2 63.654 13.28 1.452 1047.9 6.38 122.20 110 0.0641 5424.3 74.029 14.47 1.399 1487.5 10.58 226.21
–80 0.1271 2732.8 64.364 13.44 1.444 1073.2 6.62 128.33 120 0.0625 5569.0 74.401 14.47 1.399 1506.7 10.77 230.86
–70 0.1208 2867.9 65.046 13.58 1.437 1098.0 6.85 134.30 130 0.0609 5713.8 74.765 14.48 1.398 1525.6 — —
–60 0.1152 3004.4 65.702 13.71 1.431 1122.5 7.08 140.15 140 0.0594 5858.6 75.120 14.48 1.398 1544.3 — —
–50 0.1100 3142.0 66.333 13.82 1.426 1146.5 7.31 145.84 150 0.0580 6003.4 75.466 14.49 1.398 1562.8 — —
–40 0.1053 3280.7 66.941 13.91 1.422 1170.1 7.53 151.44 160 0.0567 6148.3 75.805 14.49 1.398 1581.0 — —
–30 0.1010 3420.2 67.527 14.00 1.418 1193.4 7.75 156.92 170 0.0554 6293.2 76.135 14.49 1.398 1599.1 — —
–20 0.0970 3560.6 68.093 14.07 1.415 1216.3 7.97 162.24 180 0.0542 6438.1 76.459 14.50 1.398 1616.9 — —
–10 0.0933 3701.7 68.639 14.14 1.412 1238.8 8.19 167.47 190 0.0530 6583.1 76.775 14.50 1.398 1634.6 — —
200 0.0519 6728.1 77.085 14.50 1.397 1652.0 — —
bSaturated vapor at normal boiling point

Fig.27Pressure-EnthalpyDiagramforRefrigerant702p(Parahydrogen)
Pressure

Refrigerant 702p (Parahydrogen) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
K
Absolute
Pressure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
13.80a 0.00705 77.04 7.8437 –307.2 140.1 04.980 37.428 07.72 10.68 1.690 1373 305.0 26.0 0.65 075.3 10.46 3.124 13.80
14 0.00790 76.87 7.1198 –305.7 141.9 05.088 37.115 07.53 10.70 1.692 1364 307.0 25.3 0.67 076.9 10.65 3.086 14
15 0.01343 76.01 4.4920 –298.3 150.9 5.588 35.628 7.13 10.84 1.704 1316 316.4 22.2 0.74 084.1 11.62 2.894 15
16 0.02152 75.12 2.9640 –291.1 159.5 06.051 34.295 07.30 11.01 1.720 1269 325.1 19.8 0.81 090.0 12.60 2.705 16
17 0.03284 74.19 2.0392 –283.5 167.5 06.504 33.107 07.72 11.22 1.741 1224 333.0 17.8 0.87 094.7 13.59 2.516 17
18 0.04807 73.22 1.4541 –275.4 175.0 6.958 32.042 8.26 11.46 1.767 1183 340.3 16.2 0.94 098.3 14.60 2.330 18
19 0.06796 72.19 1.0683 –266.6 181.8 07.416 31.077 08.85 11.76 1.800 1145 346.8 14.8 1.00 101.1 15.64 2.146 19
20 0.09326 71.11 0.80448 –257.2 188.0 07.880 30.193 09.48 12.12 1.840 1109 352.6 13.6 1.06 103.0 16.71 1.963 20
20.28b 0.10132 70.80 0.74656 –254.4 189.5 8.009 29.960 9.66 12.23 1.853 1099 354.1 13.3 1.07 103.4 17.01 1.913 20.28
20.50 0.10818 70.54 0.70371 –252.2 190.8 08.114 29.776 09.81 12.33 1.864 1091 355.3 13.1 1.09 103.7 17.25 1.873 20.50
21 0.12474 69.96 0.61847 –247.1 193.3 08.350 29.373 10.15 12.56 1.890 1073 357.8 12.6 1.12 104.2 17.82 1.783 21
21.50 0.14305 69.35 0.54589 –241.7 195.7 8.589 28.983 10.51 12.81 1.920 1055 360.2 12.1 1.15 104.7 18.39 1.693 21.50
22 0.16320 68.73 0.48372 –236.2 197.8 08.829 28.604 10.87 13.09 1.952 1036 362.3 11.6 1.18 104.9 18.98 1.605 22
22.50 0.18529 68.08 0.43016 –230.5 199.7 09.071 28.235 11.26 13.39 1.989 1018 364.3 11.2 1.21 105.0 19.59 1.517 22.50
23 0.20942 67.42 0.38378 –224.6 201.3 9.315 27.875 11.67 13.74 2.030 999 366.2 10.8 1.25 105.0 20.21 1.429 23
23.50 0.23570 66.72 0.34340 –218.5 202.6 09.562 27.521 12.10 14.12 2.075 0979 367.9 10.4 1.28 104.9 20.86 1.342 23.50
24 0.26423 66.00 0.30808 –212.1 203.6 09.811 27.174 12.56 14.56 2.127 0959 369.4 10.1 1.32 104.7 21.53 1.256 24
24.50 0.29511 65.25 0.27705 –205.5 204.4 10.064 26.832 13.06 15.04 2.185 939 370.8 9.7 1.35 104.3 22.23 1.171 24.50
25 0.32845 64.47 0.24966 –198.7 204.7 10.320 26.492 13.61 15.60 2.251 0918 372.1 09.4 1.39 103.8 22.95 1.086 25
26 0.40291 62.80 0.20378 –184.2 204.4 10.843 25.820 14.87 16.96 2.414 0873 374.1 08.7 1.46 102.6 24.51 0.920 26
27 0.48849 60.97 0.16716 –168.4 202.3 11.385 25.145 16.47 18.81 2.635 825 375.5 8.1 1.54 100.9 26.25 0.757 27
28 0.58610 58.93 0.13744 –151.2 198.1 11.954 24.454 18.61 21.44 2.948 0773 376.3 07.5 1.63 098.7 28.23 0.599 28
29 0.69673 56.60 0.11286 –132.0 191.3 12.560 23.727 21.70 25.45 3.426 0716 376.4 06.9 1.74 096.0 30.57 0.445 29
30 0.82143 53.86 0.09208 –110.2 180.6 13.223 22.933 26.73 32.31 4.238 653 375.9 6.4 1.86 92.6 33.45 0.299 30
31 0.96149 50.48 0.07387 0–84.4 164.1 13.981 22.011 36.68 46.58 5.916 0582 374.8 05.8 2.04 088.3 37.31 0.161 31
32 1.1185 45.81 0.05667 0–51.0 135.8 14.938 20.788 66.67 93.30 11.3570 0501 373.2 05.1 2.35 082.3 43.38 0.038 32
32.94c 1.2838 31.36 0.03189 40.3 40.3 17.615 17.615 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.000 32.94
*Temperatures on IPTS-68 scale aTriple point bNormal boiling point cCritical point
Refrigerant 702p (Parahydrogen) Properties of Gas at 0.101 325 MPa (one standard atmosphere)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp, kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp , kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
–252.9b 1.3395 0189.5 29.960 12.23 1.853 0354.1 1.07 17.01 –50 0.1100 3030.3 60.270 15.71 1.356 1118.1 07.31 164.51
–250 1.1364 0223.4 31.524 11.45 1.793 0385.5 1.22 19.33 –40 0.1053 3186.7 60.955 15.56 1.361 1144.9 07.53 168.14
–245 0.9088 279.1 33.703 10.91 1.744 431.8 1.47 23.27 –30 0.1010 3341.5 61.605 15.41 1.366 1171.1 7.75 171.75
–240 0.7608 0333.0 35.467 10.69 1.720 0472.2 1.72 27.03 –20 0.0970 3495.0 62.224 15.28 1.370 1196.8 07.97 175.31
–235 0.6557 0386.2 36.960 10.58 1.706 0508.7 1.95 30.58 –10 0.0933 3647.2 62.814 15.16 1.374 1221.9 08.19 178.87
–230 0.5767 438.9 38.260 10.54 1.694 542.0 2.18 33.99 0 0.0899 3798.3 63.377 15.06 1.377 1246.5 8.40 182.44
–225 0.5150 0491.6 39.415 10.53 1.683 0572.8 2.40 37.34 5 0.0883 3873.5 63.650 15.01 1.379 1258.6 08.50 184.23
–220 0.4655 0544.3 40.456 10.57 1.672 0601.2 2.60 40.72 10 0.0867 3948.5 63.917 14.97 1.381 1270.5 08.61 186.05
–215 0.4247 597.3 41.410 10.66 1.656 627.0 2.80 44.21 15 0.0852 4023.2 64.179 14.93 1.382 1282.3 8.71 187.89
–210 0.3906 0651.0 42.295 10.81 1.637 0650.4 2.98 47.87 20 0.0838 4097.8 64.436 14.89 1.383 1294.0 08.81 189.73
–200 0.3366 0761.4 43.918 11.31 1.587 0690.5 3.34 55.69 25 0.0824 4172.1 64.687 14.86 1.384 1305.6 08.92 191.58
–190 0.2958 877.9 45.409 12.01 1.532 723.9 3.67 64.19 30 0.0810 4246.4 64.934 14.83 1.386 1317.0 9.02 193.46
–180 0.2639 1002.1 46.819 12.84 1.479 0753.5 3.98 73.55 35 0.0797 4320.4 65.176 14.80 1.387 1328.3 09.12 195.36
–170 0.2382 1134.8 48.171 13.69 1.435 0781.3 4.28 83.79 40 0.0784 4394.3 65.414 14.77 1.388 1339.5 09.22 197.29
–160 0.2171 1275.8 49.475 14.50 1.401 808.7 4.57 94.32 45 0.0772 4468.1 65.648 14.75 1.388 1350.5 9.32 199.25
–150 0.1994 1424.3 50.732 15.17 1.376 0836.2 4.85 104.41 50 0.0760 4541.8 65.878 14.72 1.389 1361.5 09.42 201.20
–140 0.1844 1578.7 51.938 15.69 1.358 0864.2 5.12 113.74 55 0.0748 4615.4 66.104 14.70 1.390 1372.3 09.52 203.16
–130 0.1715 1737.6 53.088 16.05 1.347 892.4 5.38 122.26 60 0.0737 4688.9 66.326 14.69 1.391 1383.1 9.62 205.18
–120 0.1603 1899.3 54.180 16.27 1.341 0920.9 5.64 129.99 65 0.0726 4762.2 66.545 14.67 1.391 1393.7 09.72 207.24
–110 0.1505 2062.6 55.213 16.37 1.338 0949.5 5.89 136.76 70 0.0716 4835.6 66.760 14.65 1.392 1404.3 09.81 209.33
–100 0.1418 2226.3 56.187 16.36 1.338 978.1 6.14 142.70 75 0.0705 4908.8 66.972 14.64 1.392 1414.7 9.91 211.44
–90 0.1340 2389.6 57.104 16.29 1.340 1006.7 6.38 147.96 80 0.0695 4981.9 67.180 14.63 1.393 1425.1 10.01 213.53
–80 0.1271 2551.9 57.967 16.17 1.343 1035.1 6.62 152.62 85 0.0686 5055.1 67.386 14.62 1.393 1435.3 10.10 215.59
–70 0.1208 2712.9 58.779 16.03 1.347 1063.2 6.85 156.90 90 0.0676 5128.1 67.588 14.60 1.394 1445.5 10.20 217.63
–60 0.1152 2872.4 59.546 15.87 1.352 1090.8 7.08 160.82 95 0.0667 5201.1 67.788 14.60 1.394 1455.6 10.29 219.65
100 0.0658 5274.1 67.985 14.59 1.394 1465.6 10.39 221.73

Fig.28Pressure-EnthalpyDiagramforRefrigerant704(Helium)
Note:Thereferencestatesforenthalpyandentropydifferfromthoseinthetable.
Pressure

Refrigerant 704 (Helium) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
K
Absolute
Pressure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
2.18a 0.00486 146.24 0.87297 2.34 25.56 1.4040 12.0746 6.318 6.061 1.747 217 83.2 — — — — 0.388 2.18
2.20 0.00515 146.19 0.83068 2.48 25.66 1.4682 12.0035 5.800 6.076 1.750 217 83.6 — — — — 0.385 2.20
2.30 0.00653 145.87 0.67831 2.98 26.05 1.6865 11.7174 4.164 6.139 1.763 216 85.0 — — — — 0.371 2.30
2.40 0.00814 145.46 0.56257 3.35 26.44 1.8414 11.4586 3.217 6.199 1.778 216 86.3 — — — — 0.356 2.40
2.50 0.01000 144.96 0.47252 3.66 26.81 1.9607 11.2211 2.700 6.258 1.795 216 87.6 — — — — 0.342 2.50
2.60 0.01213 144.38 0.40113 3.93 27.17 2.0604 11.0011 2.453 6.318 1.813 217 88.8 — — — — 0.328 2.60
2.70 0.01454 143.72 0.34364 4.18 27.52 2.1502 10.7956 2.372 6.380 1.834 217 90.0 — — — — 0.314 2.70
2.80 0.01727 143.00 0.29674 4.44 27.86 2.2356 10.6024 2.394 6.446 1.857 217 91.1 — — — — 0.300 2.80
2.90 0.02032 142.21 0.25805 4.70 28.19 2.3196 10.4198 2.477 6.516 1.882 216 92.1 — — — — 0.286 2.90
3.00 0.02373 141.34 0.22582 4.97 28.50 2.4039 10.2464 2.598 6.592 1.910 214 93.0 — — — — 0.272 3.00
3.10 0.02750 140.42 0.19871 5.26 28.79 2.4894 10.0808 2.740 6.676 1.941 213 93.9 — — — — 0.258 3.10
3.20 0.03166 139.43 0.17574 5.56 29.07 2.5765 9.9222 2.897 6.768 1.976 210 94.8 — — — — 0.244 3.20
3.30 0.03622 138.38 0.15612 5.88 29.33 2.6653 9.7694 3.062 6.872 2.015 208 95.5 — — — — 0.231 3.30
3.40 0.04121 137.25 0.13925 6.22 29.57 2.7559 9.6216 3.234 6.989 2.059 205 96.3 — — — — 0.217 3.40
3.50 0.04664 136.06 0.12466 6.58 29.79 2.8482 9.4781 3.414 7.122 2.108 202 96.9 — — — — 0.203 3.50
3.60 0.05252 134.80 0.11195 6.96 29.98 2.9422 9.3381 3.603 7.274 2.165 199 97.5 3.5 1.00 17.9 7.31 0.190 3.60
3.70 0.05888 133.45 0.10081 7.35 30.16 3.0380 9.2007 3.803 7.449 2.229 196 98.1 3.4 1.04 18.1 7.56 0.177 3.70
3.80 0.06573 132.03 0.09101 7.77 30.31 3.1355 9.0653 4.020 7.654 2.303 193 98.6 3.4 1.07 18.2 7.82 0.164 3.80
3.90 0.07310 130.51 0.08232 8.21 30.43 3.2351 8.9312 4.257 7.894 2.389 189 99.1 3.3 1.11 18.4 8.09 0.150 3.90
4.00 0.08100 128.90 0.07459 8.67 30.52 3.3367 8.7975 4.523 8.179 2.491 186 99.5 3.3 1.15 18.5 8.36 0.138 4.00
4.10 0.08945 127.17 0.06767 9.16 30.57 3.4407 8.6633 4.826 8.521 2.611 182 99.8 3.2 1.19 18.6 8.66 0.125 4.10
4.20 0.09847 125.32 0.06144 9.68 30.59 3.5475 8.5277 5.179 8.938 2.756 178 100.1 3.2 1.24 18.6 8.97 0.112 4.20
4.23b 0.10132 124.73 0.05967 9.84 30.59 3.5806 8.4861 5.299 9.083 2.806 176 100.2 3.2 1.25 18.7 9.06 0.108 4.23
4.30 0.10809 123.33 0.05581 10.22 30.57 3.6577 8.3896 5.600 9.455 2.934 173 100.4 3.1 1.28 18.7 9.30 0.099 4.30
4.40 0.11832 121.17 0.05067 10.80 30.50 3.7719 8.2476 6.118 10.1100 3.158 169 100.6 3.1 1.33 18.8 9.66 0.087 4.40
4.50 0.12920 118.81 0.04596 11.42 30.36 3.8912 8.0999 6.776 10.9640 3.448 164 100.8 3.0 1.38 18.8 10.07 0.075 4.50
4.60 0.14075 116.20 0.04161 12.09 30.16 4.0171 7.9440 7.646 12.117 3.838 159 100.9 3.0 1.43 18.8 10.54 0.063 4.60
4.70 0.15301 113.27 0.03753 12.83 29.87 4.1517 7.7767 8.863 13.7540 4.388 153 101.0 2.9 1.48 18.9 11.08 0.051 4.70
4.80 0.16602 109.90 0.03367 13.64 29.45 4.2986 7.5924 10.7000 16.2440 5.224 147 101.1 2.8 1.55 19.0 11.76 0.040 4.80
4.90 0.17983 105.89 0.02993 14.57 28.87 4.4641 7.3821 13.813 20.464 6.637 140 101.3 2.7 1.62 19.1 12.63 0.029 4.90
5.00 0.19453 100.83 0.02617 15.69 28.02 4.6615 7.1273 20.2400 29.0940 9.531 133 101.6 2.6 1.70 19.3 13.86 0.018 5.00
5.10 0.21023 93.53 0.02206 17.20 26.63 4.9283 6.7774 40.7700 55.8660 18.545 124 102.5 2.5 1.80 19.9 15.77 0.008 5.10
5.20c 0.22746 69.64 0.01436 21.71 21.71 5.7639 5.7639 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.000 5.20
*Temperatures on EPT-76 scale aLower lambda point bNormal boiling point cCritical point
Refrigerant 704 (Helium) Properties of Gas at 0.101 325 MPa (one standard atmosphere)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp, kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp, kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
–268.9b 16.758 30.59 8.4861 9.083 2.806 100.2 1.25 9.05 100 0.1307 1953.16 32.7129 5.193 1.667 1137.0 23.15 181.41
–260 3.7508 82.19 15.2748 5.327 1.708 213.6 2.72 20.17 120 0.1240 2057.02 32.9840 5.193 1.667 1167.0 24.00 188.10
–250 2.1049 134.88 18.2572 5.236 1.678 284.4 3.93 28.69 140 0.1180 2160.88 33.2417 5.193 1.667 1196.3 24.84 194.69
–240 1.4677 187.10 20.1325 5.213 1.671 340.1 4.93 35.90 160 0.1126 2264.74 33.4872 5.193 1.667 1224.9 25.67 201.19
–220 0.9155 291.20 22.5899 5.200 1.668 430.1 6.60 48.56 180 0.1076 2368.60 33.7216 5.193 1.667 1252.9 26.49 207.60
–200 0.6655 395.16 24.2500 5.196 1.667 504.3 8.04 59.86 200 0.1031 2472.46 33.9459 5.193 1.667 1280.2 27.29 213.93
–180 0.5228 499.06 25.5057 5.195 1.667 568.8 9.35 70.30 220 0.0989 2576.32 34.1609 5.193 1.667 1307.0 28.09 220.18
–160 0.4305 602.95 26.5160 5.194 1.667 626.7 10.39 80.09 240 0.0950 2680.18 34.3673 5.193 1.667 1333.2 28.88 226.35
–140 0.3659 706.82 27.3614 5.194 1.667 679.7 11.56 89.41 260 0.0915 2784.04 34.5659 5.193 1.667 1358.9 29.66 232.46
–120 0.3182 810.69 28.0882 5.193 1.666 728.8 12.68 98.32 280 0.0882 2887.90 34.7571 5.193 1.667 1384.1 30.43 238.50
–100 0.2815 914.56 28.7256 5.193 1.666 774.9 13.75 106.90 300 0.0851 2991.76 34.9416 5.193 1.667 1408.9 31.20 244.47
–80 0.2524 1018.42 29.2932 5.193 1.667 818.3 14.79 115.20 320 0.0822 3095.62 35.1197 5.193 1.667 1433.3 31.96 250.39
–60 0.2287 1122.28 29.8049 5.193 1.667 859.6 15.80 123.25 340 0.0795 3199.48 35.2919 5.193 1.667 1457.2 32.71 256.24
–40 0.2091 1226.14 30.2707 5.193 1.667 898.9 16.79 131.09 360 0.0770 3303.34 35.4586 5.193 1.667 1480.8 33.45 262.04
–20 0.1926 1330.00 30.6980 5.193 1.667 936.7 17.75 138.73 380 0.0747 3407.20 35.6201 5.193 1.667 1504.0 34.19 267.79
0 0.1785 1433.87 31.0929 5.193 1.667 972.9 18.70 146.20 400 0.0725 3511.06 35.7767 5.193 1.667 1526.8 34.92 273.48
20 0.1663 1537.73 31.4599 5.193 1.667 1007.9 19.62 153.50 420 0.0704 3614.92 35.9288 5.193 1.667 1549.3 35.65 279.13
40 0.1557 1641.58 31.8026 5.193 1.667 1041.6 20.52 160.67 440 0.0684 3718.78 36.0765 5.193 1.667 1571.5 36.37 284.73
60 0.1464 1745.44 32.1241 5.193 1.667 1074.4 21.41 167.70 460 0.0665 3822.64 36.2201 5.193 1.667 1593.4 37.08 290.28
80 0.1381 1849.30 32.4269 5.193 1.667 1106.1 22.29 174.61 480 0.0648 3926.50 36.3599 5.193 1.667 1615.0 37.79 295.78
500 0.0631 4030.36 36.4960 5.193 1.667 1636.3 38.49 301.25

Fig.29Pressure-EnthalpyDiagramforRefrigerant728(Nitrogen)
Pressure

Refrigerant 728 (Nitrogen) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
K
Absolute
Pressure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
ThermalCond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
63.15a 0.01252 867.2 1.48310 –150.73 64.78 2.4257 5.8383 2.000 1.058 1.411 995 161.1 311.6 4.38 173.2 5.62 12.24 63.15
64 0.01460 863.7 1.28720 –149.03 65.59 2.4524 5.8059 2.002 1.061 1.413 987 162.1 297.5 4.44 171.5 5.71 12.03 64
66 0.02062 855.4 0.93698 –145.02 67.47 2.5140 5.7336 2.005 1.066 1.417 966 164.3 267.8 4.59 167.5 5.92 11.55 66
68 0.02848 847.0 0.69642 –141.00 69.31 2.5739 5.6667 2.010 1.073 1.421 946 166.4 242.3 4.73 163.5 6.14 11.07 68
70 0.03854 838.5 0.52743 –136.97 71.10 2.6321 5.6045 2.014 1.082 1.427 926 168.4 220.2 4.88 159.5 6.35 10.59 70
72 0.05121 829.9 0.40625 –132.93 72.83 2.6889 5.5466 2.020 1.091 1.433 906 170.3 201.1 5.03 155.5 6.58 10.12 72
74 0.06691 821.1 0.31772 –128.87 74.50 2.7442 5.4925 2.027 1.102 1.441 885 172.1 184.3 5.19 151.5 6.80 9.65 74
76 0.08610 812.2 0.25192 –124.79 76.11 2.7983 5.4417 2.035 1.114 1.450 865 173.8 169.6 5.34 147.5 7.03 9.19 76
77.35b 0.10132 806.1 0.21682 –122.02 77.16 2.8342 5.4090 2.041 1.124 1.457 851 174.8 160.7 5.44 144.8 7.19 8.87 77.35
78 0.10926 803.1 0.20226 –120.70 77.64 2.8511 5.3939 2.045 1.129 1.461 845 175.3 156.6 5.49 143.5 7.26 8.73 78
80 0.13687 793.9 0.16422 –116.58 79.10 2.9028 5.3487 2.056 1.145 1.473 824 176.7 145.1 5.65 139.5 7.51 8.27 80
82 0.16947 784.6 0.13470 –112.43 80.47 2.9534 5.3059 2.068 1.163 1.487 804 178.0 134.8 5.81 135.6 7.76 7.83 82
84 0.20757 775.0 0.11152 –108.26 81.75 3.0031 5.2651 2.083 1.184 1.503 783 179.2 125.6 5.97 131.6 8.01 7.38 84
86 0.25174 765.2 0.09310 –104.05 82.93 3.0520 5.2262 2.099 1.208 1.521 762 180.2 117.2 6.14 127.7 8.29 6.94 86
88 0.30251 755.2 0.07831 –99.81 84.01 3.1000 5.1888 2.119 1.235 1.542 741 181.0 109.7 6.31 123.7 8.57 6.51 88
90 0.36046 745.0 0.06632 –95.52 84.97 3.1473 5.1527 2.141 1.266 1.567 719 181.8 102.8 6.48 119.8 8.87 6.09 90
92 0.42616 734.5 0.05651 –91.18 85.81 3.1940 5.1178 2.166 1.300 1.594 697 182.4 96.5 6.66 115.9 9.19 5.67 92
94 0.50020 723.8 0.04842 –86.79 86.52 3.2401 5.0839 2.196 1.341 1.626 675 182.8 90.7 6.84 111.9 9.53 5.25 94
96 0.58316 712.7 0.04169 –82.34 87.10 3.2858 5.0507 2.231 1.387 1.664 652 183.1 85.4 7.03 108.0 9.89 4.84 96
98 0.67565 701.2 0.03605 –77.81 87.51 3.3311 5.0181 2.271 1.440 1.707 629 183.3 80.4 7.23 104.0 10.29 4.44 98
100 0.77827 689.4 0.03129 –73.21 87.77 3.3761 4.9858 2.318 1.503 1.758 605 183.3 75.8 7.43 100.1 10.73 4.05 100
105 1.08330 657.5 0.02224 –61.27 87.56 3.4882 4.9055 2.479 1.714 1.931 543 182.5 65.3 7.98 90.3 12.04 3.10 105
110 1.46580 621.5 0.01598 –48.49 85.84 3.6015 4.8226 2.743 2.062 2.221 476 180.8 56.0 8.63 80.4 13.83 2.21 110
115 1.93700 578.7 0.01146 –34.39 81.91 3.7198 4.7311 3.240 2.749 2.778 403 177.7 47.3 9.44 70.6 16.58 1.39 115
120 2.51060 523.4 0.00799 –17.87 74.17 3.8514 4.6185 4.508 4.631 4.216 317 172.6 38.4 10.62 61.0 21.72 0.66 120
125 3.20690 426.1 0.00487 6.40 55.03 4.0373 4.4263 16.720 23.740 16.930 195 160.3 26.9 13.33 56.4 41.54 0.08 125
126.19c 3.39580 313.3 0.00319 29.23 29.23 4.2149 4.2149 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 126.19
Refrigerant 728 (Nitrogen) Properties of Gas at 0.101 325 MPa (one standard atmosphere)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp, kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp, kJ/
(kg· K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
–195.8b 4.6121 77.16 5.4090 1.124 1.457 174.8 5.44 7.19 150 0.8065 439.66 7.2005 1.047 1.397 419.0 23.14 34.30
–180 3.7571 94.51 5.6133 1.081 1.432 194.0 6.51 8.72 160 0.7879 450.14 7.2249 1.048 1.396 423.8 23.53 34.93
–160 3.0593 115.90 5.8213 1.061 1.419 215.2 7.81 10.63 170 0.7701 460.62 7.2489 1.049 1.396 428.6 23.92 35.56
–140 2.5858 137.02 5.9932 1.052 1.412 234.2 9.06 12.49 180 0.7531 471.12 7.2723 1.050 1.395 433.3 24.31 36.18
–120 2.2414 158.02 6.1402 1.048 1.409 251.6 10.27 14.28 190 0.7368 481.62 7.2952 1.051 1.394 438.0 24.69 36.80
–100 1.9789 178.95 6.2687 1.045 1.406 267.9 11.42 16.03 200 0.7212 492.14 7.3177 1.053 1.394 442.6 25.07 37.42
–90 1.8696 189.40 6.3273 1.045 1.405 275.6 11.99 16.88 210 0.7063 502.67 7.3397 1.054 1.393 447.1 25.44 38.03
–80 1.7719 199.85 6.3829 1.044 1.405 283.1 12.54 17.71 220 0.6920 513.22 7.3613 1.055 1.392 451.6 25.81 38.63
–70 1.6839 210.28 6.4355 1.043 1.404 290.4 13.08 18.54 230 0.6782 523.78 7.3825 1.057 1.391 456.0 26.18 39.23
–60 1.6043 220.71 6.4857 1.043 1.404 297.5 13.61 19.35 240 0.6650 534.36 7.4033 1.059 1.390 460.4 26.54 39.83
–50 1.5320 231.14 6.5335 1.042 1.403 304.4 14.14 20.15 250 0.6523 544.95 7.4238 1.060 1.389 464.7 26.90 40.42
–40 1.4659 241.56 6.5791 1.042 1.403 311.2 14.65 20.94 260 0.6401 555.56 7.4439 1.062 1.389 468.9 27.26 41.01
–30 1.4053 251.98 6.6229 1.042 1.403 317.9 15.16 21.72 270 0.6283 566.19 7.4636 1.064 1.388 473.2 27.62 41.59
–20 1.3496 262.40 6.6649 1.042 1.402 324.4 15.66 22.49 280 0.6169 576.84 7.4831 1.066 1.387 477.3 27.97 42.17
–10 1.2981 272.82 6.7053 1.042 1.402 330.7 16.15 23.25 290 0.6060 587.50 7.5022 1.068 1.386 481.5 28.32 42.75
0 1.2504 283.23 6.7441 1.041 1.402 337.0 16.63 24.00 300 0.5954 598.19 7.5210 1.070 1.385 485.5 28.66 43.32
10 1.2061 293.65 6.7815 1.041 1.402 343.1 17.10 24.74 310 0.5852 608.90 7.5395 1.072 1.384 489.6 29.00 43.89
20 1.1648 304.06 6.8177 1.041 1.401 349.1 17.57 25.47 320 0.5753 619.62 7.5577 1.074 1.383 493.6 29.35 44.46
30 1.1263 314.47 6.8526 1.041 1.401 355.0 18.03 26.20 330 0.5658 630.37 7.5757 1.076 1.381 497.5 29.68 45.02
40 1.0903 324.89 6.8864 1.041 1.401 360.8 18.49 26.91 340 0.5565 641.14 7.5934 1.078 1.380 501.4 30.02 45.58
50 1.0565 335.30 6.9191 1.042 1.401 366.5 18.94 27.62 350 0.5476 651.93 7.6109 1.080 1.379 505.3 30.35 46.13
60 1.0247 345.72 6.9509 1.042 1.400 372.1 19.38 28.32 360 0.5390 662.74 7.6281 1.082 1.378 509.1 30.68 46.69
70 0.9948 356.14 6.9817 1.042 1.400 377.7 19.82 29.01 370 0.5306 673.58 7.6451 1.085 1.377 512.9 31.01 47.23
80 0.9666 366.56 7.0117 1.042 1.400 383.1 20.25 29.69 380 0.5225 684.44 7.6618 1.087 1.376 516.7 31.34 47.78
90 0.9399 376.99 7.0408 1.043 1.400 388.5 20.68 30.37 390 0.5146 695.32 7.6783 1.089 1.375 520.4 31.66 48.33
100 0.9147 387.42 7.0691 1.043 1.399 393.7 21.10 31.04 400 0.5069 706.22 7.6947 1.092 1.374 524.1 31.98 48.87
110 0.8908 397.85 7.0967 1.044 1.399 398.9 21.52 31.70 420 0.4923 728.10 7.7267 1.096 1.371 531.4 32.62 49.94
120 0.8681 408.30 7.1236 1.044 1.398 404.0 21.93 32.36 440 0.4785 750.08 7.7580 1.101 1.369 538.6 33.24 51.00
130 0.8466 418.74 7.1498 1.045 1.398 409.1 22.34 33.01 460 0.4655 772.15 7.7885 1.106 1.367 545.6 33.87 52.06
140 0.8261 429.20 7.1755 1.046 1.397 414.1 22.74 33.66 480 0.4531 794.32 7.8183 1.111 1.365 552.6 34.48 53.10
500 0.4414 816.59 7.8475 1.116 1.363 559.4 35.08 54.14

Fig.30Pressure-EnthalpyDiagramforRefrigerant729(Air)
Pressure

Refrigerant 729 (Air) Properties of Liquid on the Bubble Line and Vapor on the Dew Line
Absolute
Pressure,
MPa
Temperature,* K
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
SpecificHeatcp ,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/mBubble Dew Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor
0.00526 59.75 63.09 957.8 3.42745 –162.40 62.73 2.4517 6.1507 1.895 1.014 1.405 1056 158.9 424.8 4.47 185.2 5.83 14.95
0.008 61.83 65.12 949.2 2.32401 –158.45 64.67 2.5165 6.0614 1.897 1.017 1.407 1035 161.3 377.9 4.62 181.2 6.04 14.41
0.01 63.00 66.27 944.4 1.88990 –156.22 65.75 2.5522 6.0142 1.899 1.019 1.408 1023 162.6 354.6 4.70 179.0 6.16 14.11
0.015 65.27 68.47 934.9 1.29870 –151.92 67.82 2.6193 5.9293 1.902 1.023 1.411 1001 165.0 315.3 4.87 174.7 6.38 13.54
0.02 66.99 70.15 927.6 0.99558 –148.64 69.35 2.6687 5.8697 1.904 1.026 1.414 984 166.8 289.6 4.99 171.4 6.55 13.11
0.03 69.58 72.68 916.5 0.68481 –143.68 71.62 2.7412 5.7866 1.909 1.033 1.420 959 169.4 256.4 5.18 166.5 6.80 12.46
0.04 71.57 74.61 907.9 0.52523 –139.88 73.30 2.7948 5.7282 1.913 1.039 1.425 940 171.3 234.8 5.33 162.7 7.00 11.97
0.05 73.19 76.19 900.8 0.42756 –136.77 74.63 2.8378 5.6832 1.917 1.044 1.430 925 172.8 219.0 5.45 159.7 7.16 11.57
0.06 74.58 77.53 894.7 0.36139 –134.10 75.75 2.8738 5.6467 1.921 1.050 1.434 911 174.0 206.8 5.55 157.0 7.29 11.24
0.08 76.89 79.78 884.3 0.27713 –129.64 77.55 2.9323 5.5893 1.928 1.060 1.443 889 175.9 188.7 5.72 152.7 7.52 10.68
0.1 78.79 81.62 875.7 0.22550 –125.95 78.96 2.9794 5.5450 1.936 1.070 1.452 871 177.3 175.6 5.86 149.1 7.71 10.22
0.10132b 78.90 81.73 875.1 0.22277 –125.73 79.05 2.9822 5.5424 1.936 1.071 1.452 869 177.4 174.8 5.87 148.9 7.72 10.20
0.15 82.51 85.23 858.4 0.15488 –118.68 81.55 3.0688 5.4648 1.953 1.094 1.471 834 179.9 153.5 6.15 142.1 8.07 9.35
0.2 85.39 88.02 844.6 0.11849 –113.01 83.38 3.1357 5.4079 1.969 1.117 1.409 806 181.6 139.3 6.37 136.8 8.37 8.68
0.3 89.82 92.32 822.7 0.08100 –104.17 85.84 3.2353 5.3272 2.002 1.162 1.527 762 183.7 120.9 6.72 128.5 8.88 7.67
0.4 93.26 95.65 805.0 0.06165 –97.17 87.42 3.3104 5.2691 2.034 1.207 1.564 727 184.9 108.9 7.00 122.1 9.37 6.90
0.5 96.12 98.42 789.7 0.04977 –91.26 88.49 3.3715 5.2231 2.068 1.253 1.601 697 185.6 100.1 7.25 116.8 9.82 6.28
0.6 98.59 100.80 776.0 0.04169 –86.07 89.22 3.4235 5.1848 2.102 1.299 1.639 670 186.0 93.3 7.47 112.2 10.24 5.75
0.8 102.76 104.83 751.9 0.03136 –77.12 89.99 3.5098 5.1221 2.176 1.398 1.721 625 186.3 83.0 7.86 104.4 11.03 4.88
1 106.23 108.18 730.4 0.02500 –69.40 90.12 3.5811 5.0708 2.258 1.506 1.813 585 186.0 75.3 8.21 98.0 11.81 4.18
1.5 113.15 114.83 682.6 0.01623 –53.12 88.65 3.7230 4.9678 2.515 1.844 2.101 500 184.2 61.9 9.00 85.2 13.87 2.85
2 118.58 120.02 638.2 0.01162 –39.06 85.27 3.8379 4.8805 2.899 2.359 2.538 427 181.4 52.5 9.79 75.2 16.31 1.89
2.5 123.11 124.32 592.9 0.00869 –25.82 80.04 3.9407 4.7966 3.558 3.27 3.286 359 177.8 44.8 10.68 66.9 19.55 1.16
3 127.03 127.99 541.8 0.00658 –12.26 72.34 4.0419 4.7056 5.008 5.303 4.895 290 173.4 37.7 11.82 60.0 24.56 0.59
3.78781c 132.53 132.53 342.6 0.00292 29.38 29.38 4.3479 4.3479 — — — — — — — — — 0.00
Refrigerant 729 (Air) Properties of Gas at 0.101 325 MPa (one standard atmosphere)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp, kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp, kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
–191.4d 4.4889 79.05 5.5424 1.071 1.452 177.4 5.87 7.72 150 0.8338 424.81 7.2142 1.017 1.394 411.7 24.11 34.75
–180 3.8887 91.09 5.6804 1.044 1.435 190.8 6.68 8.84 160 0.8145 434.99 7.2379 1.019 1.394 416.4 24.52 35.39
–160 3.1648 111.75 5.8814 1.025 1.421 211.7 8.04 10.76 170 0.7961 445.18 7.2612 1.020 1.393 421.1 24.93 36.04
–140 2.6744 132.15 6.0474 1.016 1.414 230.4 9.35 12.63 180 0.7785 455.39 7.2840 1.022 1.392 425.7 25.34 36.67
–120 2.3178 152.43 6.1893 1.012 1.410 247.6 10.61 14.45 190 0.7617 465.62 7.3063 1.023 1.391 430.2 25.74 37.31
–100 2.0462 172.63 6.3133 1.009 1.408 263.5 11.82 16.20 200 0.7456 475.86 7.3282 1.025 1.390 434.7 26.13 37.93
–90 1.9332 182.71 6.3699 1.008 1.407 271.1 12.41 17.06 210 0.7302 486.12 7.3497 1.027 1.389 439.1 26.53 38.56
–80 1.8321 192.79 6.4235 1.007 1.406 278.5 12.99 17.91 220 0.7154 496.40 7.3707 1.029 1.388 443.5 26.92 39.17
–70 1.7411 202.86 6.4743 1.007 1.406 285.7 13.55 18.74 230 0.7011 506.70 7.3914 1.031 1.387 447.8 27.30 39.79
–60 1.6588 212.93 6.5227 1.007 1.405 292.7 14.11 19.56 240 0.6875 517.02 7.4117 1.033 1.386 452.0 27.69 40.40
–50 1.5840 222.99 6.5688 1.006 1.405 299.5 14.66 20.37 250 0.6743 527.35 7.4317 1.035 1.385 456.2 28.06 41.00
–40 1.5156 233.06 6.6130 1.006 1.404 306.2 15.20 21.17 260 0.6617 537.71 7.4513 1.037 1.384 460.4 28.44 41.60
–30 1.4530 243.11 6.6552 1.006 1.404 312.7 15.73 21.96 270 0.6495 548.09 7.4705 1.039 1.383 464.5 28.81 42.20
–20 1.3953 253.17 6.6957 1.006 1.404 319.1 16.25 22.74 280 0.6378 558.49 7.4895 1.041 1.381 468.6 29.18 42.80
–10 1.3421 263.23 6.7347 1.006 1.403 325.4 16.76 23.51 290 0.6264 568.91 7.5082 1.043 1.380 472.6 29.55 43.39
0 1.2927 273.29 6.7722 1.006 1.403 331.5 17.27 24.27 300 0.6155 579.35 7.5266 1.045 1.379 476.6 29.91 43.97
10 1.2469 283.35 6.8084 1.006 1.402 337.5 17.77 25.02 310 0.6049 589.82 7.5447 1.048 1.378 480.5 30.27 44.56
20 1.2043 293.41 6.8433 1.006 1.402 343.4 18.26 25.77 320 0.5947 600.30 7.5625 1.050 1.377 484.4 30.63 45.14
30 1.1644 303.48 6.8771 1.007 1.402 349.2 18.75 26.50 330 0.5849 610.81 7.5801 1.052 1.376 488.3 30.98 45.71
40 1.1272 313.55 6.9098 1.007 1.401 354.9 19.22 27.22 340 0.5753 621.35 7.5974 1.055 1.375 492.1 31.34 46.29
50 1.0922 323.62 6.9414 1.008 1.401 360.5 19.70 27.94 350 0.5661 631.90 7.6145 1.057 1.373 495.9 31.69 46.86
60 1.0594 333.70 6.9721 1.008 1.400 366.0 20.16 28.65 360 0.5572 642.48 7.6313 1.059 1.372 499.7 32.03 47.42
70 1.0284 343.79 7.0020 1.009 1.400 371.4 20.62 29.36 370 0.5485 653.09 7.6479 1.062 1.371 503.4 32.38 47.99
80 0.9993 353.88 7.0310 1.010 1.399 376.7 21.08 30.05 380 0.5401 663.71 7.6643 1.064 1.370 507.1 32.72 48.55
90 0.9717 363.98 7.0592 1.011 1.399 381.9 21.52 30.74 390 0.5320 674.37 7.6805 1.066 1.369 510.7 33.06 49.11
100 0.9456 374.09 7.0866 1.011 1.398 387.1 21.97 31.42 400 0.5241 685.04 7.6965 1.069 1.368 514.3 33.40 49.66
110 0.9209 384.21 7.1134 1.012 1.397 392.1 22.41 32.10 420 0.5089 706.47 7.7279 1.074 1.365 521.5 34.06 50.76
120 0.8975 394.34 7.1395 1.014 1.397 397.1 22.84 32.77 440 0.4947 727.98 7.7585 1.078 1.363 528.5 34.72 51.86
130 0.8752 404.49 7.1650 1.015 1.396 402.1 23.27 33.43 460 0.4812 749.60 7.7884 1.083 1.361 535.4 35.37 52.94
140 0.8540 414.64 7.1899 1.016 1.395 406.9 23.69 34.09 480 0.4684 771.31 7.8176 1.088 1.359 542.3 36.02 54.01
500 0.4563 793.12 7.8461 1.093 1.357 549.0 36.65 55.08
dSaturated vapor at dew-point temperature

Fig.31Pressure-EnthalpyDiagramforRefrigerant732(Oxygen)
Pressure

Refrigerant 732 (Oxygen) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
K
Absolute
Pressure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat cp,
kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
54.36a 0.00015 1306.1 96.54300 –193.61 49.11 2.0921 6.5571 1.673 0.926 1.395 1123 140.3 773.6 4.10 201.9 4.42 22.68 54.36
55 0.00018 1303.5 80.00900 –192.55 49.68 2.1117 6.5159 1.672 0.928 1.394 1127 141.1 747.5 4.15 201.0 4.48 22.50 55
60 0.00073 1282.0 21.46200 –184.19 54.19 2.2571 6.2301 1.673 0.948 1.390 1127 147.0 578.1 4.55 193.9 4.98 21.12 60
65 0.00233 1259.7 7.21880 –175.81 58.66 2.3912 5.9985 1.677 0.967 1.387 1102 152.6 457.9 4.96 186.8 5.49 19.76 65
70 0.00626 1237.0 2.89250 –167.42 63.09 2.5156 5.8086 1.678 0.978 1.387 1066 158.1 371.8 5.36 179.7 5.99 18.41 70
75 0.01455 1213.9 1.32930 –159.02 67.45 2.6313 5.6510 1.679 0.979 1.392 1027 163.3 308.7 5.75 172.6 6.51 17.09 75
80 0.03012 1190.5 0.68099 –150.61 71.69 2.7397 5.5185 1.682 0.974 1.402 987 168.4 261.2 6.15 165.4 7.03 15.78 80
85 0.05683 1166.6 0.38047 –142.18 75.75 2.8417 5.4055 1.688 0.969 1.417 947 173.1 224.6 6.54 158.3 7.57 14.49 85
90 0.09935 1142.1 0.22794 –133.69 79.55 2.9383 5.3076 1.699 0.970 1.436 906 177.3 195.6 6.94 151.0 8.12 13.22 90
90.19b 0.10133 1141.2 0.22386 –133.37 79.69 2.9419 5.3042 1.699 0.971 1.437 904 177.5 194.7 6.95 150.8 8.15 13.17 90.19
95 0.16308 1116.9 0.14450 –125.12 83.04 3.0303 5.2215 1.715 0.982 1.460 864 181.0 172.1 7.33 143.8 8.71 11.98 95
100 0.25400 1090.9 0.09592 –116.45 86.16 3.1185 5.1445 1.738 1.006 1.491 822 184.1 152.6 7.73 136.6 9.34 10.75 100
105 0.37853 1063.8 0.06612 –107.64 88.85 3.2033 5.0746 1.767 1.046 1.528 779 186.4 135.9 8.13 129.2 10.01 9.56 105
110 0.54340 1035.5 0.04699 –98.64 91.05 3.2855 5.0100 1.807 1.101 1.576 735 188.1 121.5 8.55 121.9 10.75 8.39 110
115 0.75559 1005.6 0.03424 –89.42 92.72 3.3657 4.9495 1.858 1.177 1.638 689 189.1 108.8 8.98 114.6 11.57 7.25 115
120 1.02230 973.9 0.02544 –79.90 93.75 3.4444 4.8915 1.927 1.276 1.721 642 189.4 97.4 9.43 107.2 12.51 6.14 120
125 1.35090 939.7 0.01919 –70.02 94.06 3.5222 4.8349 2.021 1.411 1.835 592 189.0 87.1 9.91 99.9 13.61 5.07 125
130 1.74910 902.5 0.01463 –59.66 93.47 3.6001 4.7780 2.153 1.600 2.000 540 187.8 77.6 10.45 92.6 14.94 4.04 130
135 2.22500 861.0 0.01120 –48.65 91.74 3.6791 4.7191 2.354 1.886 2.252 484 185.7 68.7 11.06 85.4 16.64 3.05 135
140 2.78780 813.2 0.00856 –36.70 88.47 3.7612 4.6552 2.691 2.370 2.682 423 182.8 60.2 11.82 78.2 18.98 2.13 140
145 3.44770 755.1 0.00646 –23.22 82.83 3.8498 4.5812 3.368 3.369 3.561 355 178.8 51.9 12.88 71.1 22.58 1.27 145
150 4.21860 675.5 0.00465 –6.67 72.56 3.9546 4.4828 5.464 6.625 6.315 274 172.8 42.9 14.72 64.2 29.67 0.51 150
154.58c 5.04300 436.1 0.00229 32.42 32.42 4.2008 4.2008 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 154.58
Refrigerant 732 (Oxygen) Properties of Gas at 0.101 325 MPa (one standard atmosphere)
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp , kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
Temp.,*
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp , kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
–183.0b 4.4671 79.69 5.3042 0.971 1.437 177.5 6.95 8.15 150 0.9215 387.55 6.7333 0.948 1.379 389.3 26.96 35.69
–180 4.3120 82.52 5.3352 0.948 1.439 181.1 7.18 8.43 160 0.9002 397.05 6.7555 0.951 1.377 393.7 27.43 36.41
–160 3.5050 101.23 5.5171 0.931 1.422 201.0 8.71 10.34 170 0.8799 406.58 6.7772 0.954 1.375 398.0 27.90 37.11
–140 2.9596 119.78 5.6681 0.924 1.414 218.8 10.18 12.22 180 0.8605 416.14 6.7986 0.957 1.373 402.2 28.37 37.81
–120 2.564 138.20 5.7970 0.919 1.409 235.2 11.59 14.07 190 0.8419 425.72 6.8195 0.961 1.372 406.4 28.83 38.51
–100 2.2629 156.56 5.9096 0.916 1.407 250.4 12.96 15.88 200 0.8241 435.35 6.8400 0.964 1.370 410.5 29.28 39.21
–90 2.1378 165.72 5.9611 0.916 1.406 257.6 13.62 16.76 210 0.8070 445.00 6.8602 0.967 1.368 414.5 29.73 39.89
–80 2.0258 174.87 6.0097 0.915 1.405 264.6 14.28 17.64 220 0.7906 454.68 6.8801 0.970 1.367 418.5 30.18 40.58
–70 1.9251 184.02 6.0559 0.915 1.404 271.5 14.92 18.51 230 0.7749 464.40 6.8996 0.973 1.365 422.5 30.63 41.26
–60 1.8340 193.16 6.0998 0.914 1.404 278.1 15.55 19.37 240 0.7598 474.14 6.9188 0.976 1.363 426.4 31.06 41.94
–50 1.7512 202.30 6.1418 0.914 1.403 284.6 16.17 20.22 250 0.6743 527.35 7.4345 1.035 1.385 456.2 27.56 40.55
–40 1.6756 211.45 6.1818 0.914 1.402 290.9 16.78 21.06 260 0.7313 493.73 6.9562 0.983 1.360 434.2 31.93 43.28
–30 1.6063 220.59 6.2202 0.915 1.401 297.1 17.39 21.90 270 0.7178 503.58 6.9745 0.986 1.359 438.0 32.36 43.94
–20 1.5425 229.74 6.2571 0.915 1.401 303.1 17.98 22.72 280 0.7048 513.45 6.9925 0.989 1.357 441.7 32.78 44.61
–10 1.4836 238.90 6.2926 0.916 1.400 309.0 18.57 23.54 290 0.6923 523.36 7.0103 0.992 1.355 445.4 33.20 45.27
0 1.4290 248.06 6.3268 0.917 1.399 314.8 19.14 24.35 300 0.6802 533.29 7.0278 0.995 1.354 449.1 33.62 45.92
10 1.3784 257.23 6.3597 0.918 1.398 320.5 19.71 25.15 310 0.6686 543.26 7.0450 0.998 1.352 452.8 34.04 46.57
20 1.3312 266.41 6.3916 0.919 1.397 326.0 20.27 25.95 320 0.6573 553.26 7.0620 1.001 1.351 456.4 34.45 47.22
30 1.2871 275.61 6.4225 0.920 1.396 331.4 20.83 26.73 330 0.6464 563.28 7.0788 1.004 1.350 460.0 34.85 47.87
40 1.2459 284.82 6.4524 0.922 1.395 336.7 21.37 27.51 340 0.6358 573.34 7.0953 1.007 1.348 463.6 35.26 48.51
50 1.2073 294.05 6.4814 0.924 1.394 342.0 21.91 28.29 350 0.6256 583.43 7.1116 1.010 1.347 467.1 35.66 49.15
60 1.1709 303.29 6.5095 0.926 1.392 347.1 22.44 29.05 360 0.6157 593.54 7.1277 1.013 1.345 470.6 36.06 49.78
70 1.1367 312.56 6.5369 0.928 1.391 352.1 22.97 29.82 370 0.6062 603.68 7.1436 1.016 1.344 474.1 36.46 50.42
80 1.1045 321.85 6.5636 0.930 1.390 357.0 23.49 30.57 380 0.5969 613.86 7.1593 1.019 1.343 477.5 36.85 51.05
90 1.0740 331.16 6.5896 0.932 1.388 361.9 24.00 31.32 390 0.5879 624.05 7.1748 1.021 1.342 480.9 37.24 51.68
100 1.0452 340.49 6.6150 0.935 1.387 366.6 24.51 32.06 400 0.5792 634.28 7.1901 1.024 1.340 484.3 37.63 52.30
110 1.0179 349.85 6.6397 0.937 1.385 371.3 25.01 32.80 420 0.5624 654.81 7.2202 1.029 1.338 491.0 38.39 53.54
120 0.9919 359.23 6.6639 0.940 1.384 375.9 25.50 33.53 440 0.5467 675.45 7.2495 1.034 1.336 497.6 39.15 54.78
130 0.9673 368.64 6.6875 0.943 1.382 380.5 25.99 34.26 460 0.5318 696.19 7.2782 1.039 1.334 504.2 39.90 56.00
140 0.9439 378.08 6.7107 0.945 1.38 384.9 26.48 34.98 480 0.5176 717.02 7.3062 1.044 1.332 510.6 40.64 57.21
500 0.5042 737.95 7.3336 1.049 1.330 517.0 41.36 58.42
*Temperatures on IPTS-68 scale

Fig.32Pressure-EnthalpyDiagramforRefrigerant740(Argon)
Pressure

Refrigerant 740 (Argon) Properties of Saturated Liquid and Saturated Vapor
Temp.,*
K
Absolute
Pressure,
MPa
Density,
kg/m3
Liquid
Volume,
m3/kg
Vapor
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
Specific Heat
cp , kJ/(kg·K) cp /cv
Vapor
Velocity of
Sound, m/s
Viscosity,
μPa·s
Thermal Cond.,
mW/(m·K)
Surface
Tension,
mN/m
Temp.,*
83.81a 0.06889 1416.8 0.24663 –121.44 42.28 1.3295 3.2830 1.116 0.555 1.709 862 168.1 290.2 6.86 133.6 5.36 13.42 83.81
84 0.07045 1415.6 0.24164 –121.22 42.36 1.3321 3.2794 1.116 0.556 1.710 861 168.3 288.4 6.87 133.3 5.37 13.37 84
86 0.08811 1403.4 0.19687 –118.98 43.13 1.3583 3.2433 1.116 0.562 1.719 847 169.9 270.9 7.05 130.4 5.52 12.86 86
87.30b 0.10132 1395.4 0.17320 –117.52 43.62 1.3750 3.2208 1.117 0.566 1.725 838 170.9 260.3 7.17 128.5 5.62 12.53 87.3
88 0.10901 1391.1 0.16198 –116.74 43.87 1.3839 3.2090 1.118 0.568 1.728 833 171.4 254.8 7.23 127.4 5.68 12.35 88
90 0.13351 1378.6 0.13448 –114.49 44.57 1.4090 3.1763 1.121 0.576 1.740 819 172.8 240.0 7.41 124.5 5.83 11.85 90
92 0.16199 1366.0 0.11258 –112.23 45.23 1.4335 3.1451 1.125 0.584 1.752 805 174.2 226.4 7.60 121.6 6.00 11.36 92
94 0.19485 1353.2 0.09496 –109.96 45.85 1.4577 3.1152 1.131 0.593 1.766 791 175.5 213.8 7.78 118.7 6.16 10.86 94
96 0.23249 1340.3 0.08067 –107.68 46.41 1.4814 3.0865 1.137 0.603 1.782 776 176.7 202.2 7.97 115.8 6.33 10.38 96
98 0.27532 1327.1 0.06897 –105.38 46.93 1.5048 3.0590 1.145 0.614 1.800 762 177.8 191.3 8.16 113.0 6.51 9.89 98
100 0.32377 1313.7 0.05932 –103.06 47.40 1.5278 3.0324 1.154 0.627 1.820 747 178.9 181.3 8.35 110.2 6.69 9.42 100
102 0.37825 1300.1 0.05129 –100.72 47.81 1.5505 3.0068 1.164 0.641 1.842 732 179.9 172.0 8.54 107.4 6.88 8.94 102
104 0.43920 1286.2 0.04458 –98.37 48.17 1.5730 2.9819 1.175 0.656 1.867 717 180.8 163.3 8.74 104.6 7.08 8.48 104
106 0.50706 1272.0 0.03892 –95.98 48.46 1.5952 2.9578 1.188 0.673 1.894 701 181.6 155.2 8.95 101.9 7.28 8.02 106
108 0.58226 1257.6 0.03413 –93.57 48.68 1.6172 2.9343 1.202 0.691 1.926 685 182.4 147.6 9.15 99.1 7.50 7.56 108
110 0.66526 1242.8 0.03004 –91.13 48.84 1.6390 2.9114 1.218 0.712 1.960 669 183.0 140.4 9.37 96.4 7.73 7.11 110
112 0.75650 1227.6 0.02654 –88.65 48.92 1.6606 2.8890 1.235 0.736 2.000 653 183.6 133.7 9.59 93.7 7.98 6.67 112
114 0.85644 1212.1 0.02351 –86.14 48.93 1.6821 2.8669 1.255 0.762 2.044 636 184.1 127.4 9.81 91.0 8.24 6.23 114
116 0.96553 1196.2 0.02090 –83.59 48.85 1.7035 2.8452 1.278 0.791 2.094 619 184.5 121.4 10.04 88.4 8.52 5.80 116
118 1.08420 1179.7 0.01862 –81.00 48.68 1.7248 2.8238 1.303 0.825 2.151 602 184.8 115.7 10.29 85.7 8.82 5.38 118
120 1.21300 1162.8 0.01663 –78.35 48.41 1.7461 2.8025 1.332 0.863 2.216 584 185.1 110.2 10.54 83.1 9.15 4.96 120
125 1.58230 1117.9 0.01263 –71.49 47.27 1.7995 2.7495 1.425 0.986 2.426 538 185.3 97.6 11.23 76.7 10.14 3.95 125
130 2.02550 1068.1 0.00966 –64.16 45.30 1.8538 2.6957 1.564 1.172 2.741 488 184.8 85.9 12.03 70.4 11.45 3.00 130
135 2.55090 1011.5 0.00739 –56.18 42.21 1.9102 2.6390 1.790 1.482 3.262 433 183.7 74.7 13.02 64.2 13.34 2.10 135
140 3.16820 943.7 0.00559 –47.16 37.47 1.9712 2.5757 2.225 2.104 4.258 372 181.5 63.6 14.32 58.1 16.39 1.29 140
145 3.88960 854.3 0.00409 –36.19 29.76 2.0425 2.4973 3.399 3.896 6.880 297 176.6 52.1 16.27 52.0 22.53 0.58 145
150 4.73460 680.4 0.00253 –17.88 11.52 2.1589 2.3550 23.580 35.470 43.160 175 157.0 36.8 21.18 57.6 55.88 0.04 150
150.69c 4.86300 535.6 0.00187 –4.33 –4.33 2.2476 2.2476 ∞ ∞ ∞ 0 0.0 — — ∞ ∞ 0.00 150.69
Refrigerant 740 (Argon) Properties of Gas at 0.101 325 MPa (one standard atmosphere)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp, kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
Temp.,
°C
Density,
kg/m3
Enthalpy,
kJ/kg
Entropy,
kJ/(kg·K)
cp , kJ/
(kg·K) cp /cv
Vel. of
Sound,
m/s
Visc.,
μPa·s
Thermal
Cond.,
mW/(m·K)
–185.8b 5.7736 43.62 3.2208 0.566 1.725 170.9 7.17 5.62 150 1.1504 220.08 4.0554 0.521 1.668 383.3 29.99 23.53
–180 5.3774 46.90 3.2571 0.556 1.715 177.2 7.66 6.01 160 1.1239 225.28 4.0676 0.521 1.668 387.8 30.54 23.96
–160 4.3721 57.80 3.3632 0.538 1.696 196.6 9.32 7.30 170 1.0985 230.49 4.0795 0.521 1.668 392.2 31.09 24.38
–140 3.6930 68.48 3.4501 0.531 1.686 214.0 10.93 8.56 180 1.0742 235.70 4.0911 0.521 1.668 396.6 31.62 24.80
–120 3.2000 79.06 3.5242 0.527 1.681 229.9 12.50 9.79 190 1.0510 240.91 4.1025 0.521 1.668 401.0 32.16 25.22
–100 2.8246 89.58 3.5887 0.525 1.677 244.7 14.02 10.99 200 1.0288 246.12 4.1136 0.521 1.668 405.3 32.68 25.64
–90 2.6684 94.83 3.6182 0.525 1.676 251.8 14.77 11.57 210 1.0075 251.32 4.1245 0.521 1.668 409.6 33.21 26.04
–80 2.5287 100.08 3.6461 0.524 1.675 258.6 15.50 12.15 220 0.9870 256.53 4.1351 0.521 1.668 413.8 33.73 26.45
–70 2.4031 105.31 3.6725 0.524 1.674 265.3 16.22 12.72 230 0.9674 261.74 4.1456 0.521 1.668 418.0 34.24 26.85
–60 2.2894 110.55 3.6977 0.523 1.673 271.8 16.94 13.28 240 0.9485 266.94 4.1558 0.521 1.667 422.1 34.75 27.25
–50 2.1861 115.78 3.7217 0.523 1.672 278.1 17.64 13.83 250 0.9304 272.15 4.1659 0.521 1.667 426.2 35.25 27.65
–40 2.0917 121.00 3.7446 0.523 1.672 284.3 18.33 14.38 260 0.9129 277.36 4.1758 0.521 1.667 430.2 35.75 28.04
–30 2.0052 126.23 3.7665 0.522 1.671 290.4 19.02 14.91 270 0.8961 282.56 4.1854 0.521 1.667 434.2 36.25 28.43
–20 1.9256 131.45 3.7876 0.522 1.671 296.3 19.69 15.44 280 0.8799 287.77 4.1949 0.521 1.667 438.2 36.74 28.81
–10 1.8520 136.67 3.8078 0.522 1.671 302.2 20.36 15.97 290 0.8643 292.98 4.2043 0.521 1.667 442.2 37.23 29.19
0 1.7840 141.89 3.8273 0.522 1.670 307.9 21.02 16.48 300 0.8492 298.18 4.2134 0.521 1.667 446.1 37.71 29.57
10 1.7207 147.11 3.8460 0.522 1.670 313.5 21.67 16.99 310 0.8346 303.39 4.2224 0.521 1.667 450.0 38.20 29.95
20 1.6618 152.33 3.8641 0.522 1.670 319.0 22.31 17.50 320 0.8206 308.59 4.2313 0.521 1.667 453.8 38.67 30.32
30 1.6068 157.54 3.8816 0.522 1.669 324.4 22.94 17.99 330 0.8069 313.80 4.2400 0.521 1.667 457.6 39.15 30.69
40 1.5554 162.76 3.8985 0.521 1.669 329.7 23.56 18.48 340 0.7938 319.01 4.2485 0.521 1.667 461.4 39.61 31.06
50 1.5071 167.97 3.9149 0.521 1.669 334.9 24.18 18.97 350 0.7810 324.21 4.2570 0.521 1.667 465.1 40.08 31.42
60 1.4618 173.18 3.9308 0.521 1.669 340.1 24.79 19.45 360 0.7687 329.42 4.2652 0.521 1.667 468.8 40.54 31.78
70 1.4191 178.39 3.9462 0.521 1.669 345.1 25.40 19.92 370 0.7567 334.62 4.2734 0.521 1.667 472.5 41.00 32.14
80 1.3788 183.61 3.9612 0.521 1.669 350.1 25.99 20.39 380 0.7452 339.83 4.2814 0.521 1.667 476.2 41.46 32.50
90 1.3408 188.82 3.9758 0.521 1.669 355.1 26.58 20.85 390 0.7339 345.03 4.2893 0.521 1.667 479.8 41.91 32.85
100 1.3048 194.03 3.9899 0.521 1.668 359.9 27.17 21.31 400 0.7230 350.24 4.2971 0.521 1.667 483.4 42.36 33.20
110 1.2707 199.24 4.0037 0.521 1.668 364.7 27.74 21.76 420 0.7022 360.65 4.3124 0.521 1.667 490.5 43.25 33.90
120 1.2383 204.45 4.0171 0.521 1.668 369.4 28.32 22.21 440 0.6825 371.06 4.3272 0.520 1.667 497.6 44.13 34.58
130 1.2076 209.66 4.0302 0.521 1.668 374.1 28.88 22.66 460 0.6638 381.47 4.3416 0.520 1.667 504.5 45.00 35.26
140 1.1783 214.87 4.0430 0.521 1.668 378.7 29.44 23.09 480 0.6462 391.88 4.3556 0.520 1.667 511.3 45.86 35.93
500 0.6295 402.29 4.3692 0.520 1.667 518.1 46.70 36.59

Fig.33Enthalpy-ConcentrationDiagramforAmmonia/WaterSolutions
PreparedbyKwangKimandKeithHerold,CenterforEnvironmentalEnergyEngineering,UniversityofMarylandatCollegePark

Specific Volume of Saturated Ammonia Solutions, m3/kg
Temp.,
°C
Concentration, Ammonia (Mass basis)
Temp.,
°C0 10 20 30 40 50 60 70 80 90 100
–10 0.00100 0.00103 0.00106 0.00109 0.00114 0.00118 0.00122 0.00128 0.00135 0.00142 0.00151 –10
0 0.00100 0.00103 0.00107 0.00110 0.00114 0.00119 0.00124 0.00130 0.00137 0.00146 0.00156 0
10 0.00100 0.00104 0.00107 0.00111 0.00115 0.00120 0.00125 0.00132 0.00139 0.00149 0.00160 10
20 0.00100 0.00104 0.00108 0.00112 0.00116 0.00121 0.00127 0.00133 0.00142 0.00152 0.00164 20
30 0.00100 0.00105 0.00108 0.00113 0.00117 0.00123 0.00128 0.00135 0.00145 0.00156 0.00168 30
40 0.00101 0.00105 0.00109 0.00114 0.00119 0.00124 0.00130 0.00138 0.00148 0.00159 0.00173 40
50 0.00101 0.00106 0.00110 0.00115 0.00120 0.00125 0.00132 0.00140 0.00151 0.00163 0.00177 50
60 0.00102 0.00106 0.00111 0.00116 0.00121 0.00127 0.00134 0.00143 0.00154 0.00167 0.00183 60
70 0.00102 0.00107 0.00112 0.00117 0.00122 0.00129 0.00136 0.00146 0.00158 0.00172 0.00190 70
80 0.00103 0.00108 0.00113 0.00118 0.00124 0.00130 0.00139 0.00149 0.00162 0.00178 0.00198 80
90 0.00104 0.00109 0.00114 0.00119 0.00125 0.00132 0.00141 0.00153 0.00167 0.00184 0.00208 90
100 0.00104 0.00110 0.00115 0.00121 0.00127 0.00135 0.00145 0.00157 0.00172 0.00191 0.00219 100
Prepared under ASHRAE research project RP-271, sponsored by TC 8.3.
Data reference: B.H. Jennings, Ammonia water properties (paper presented at ASHRAE meeting, January 1965).
Refrigerant Temperature (t′ = °C) and Enthalpy (h = kJ/kg) of Lithium Bromide Solutions
Temp.,
(t = °C)
Percent LiBr
0 10 20 30 40 45 50 55 60 65 70
20
t′ 20.0 19.1 17.7 15.0 9.8 5.8 –0.4 –7.7 –15.8 –23.4# –29.3#
h 84.0 67.4 52.6 40.4 33.5 33.5 38.9 53.2 78.0 111.0# 145.0#
30
t′ 30.0 29.0 27.5 24.6 19.2 15.0 8.6 1.0 –7.3 –15.2# –21.6#
h 125.8 103.3 84.0 68.6 58.3 56.8 60.5 73.5 96.8 128.4# 161.7#
40
t′ 40.0 38.9 37.3 34.3 28.5 24.1 17.5 9.8 1.3 –7.0# –14.0#
h 167.6 139.5 115.8 96.0 82.5 79.7 82.2 93.5 115.4 146.0# 178.3#
50
t′ 50.0 48.8 47.2 44.0 37.9 33.3 26.5 18.5 9.9 1.3 –6.3#
h 209.3 175.2 147.0 123.4 106.7 102.6 103.8 114.0 134.5 163.5 195.0#
60
t′ 60.0 58.8 57.0 53.6 47.3 42.5 35.5 27.3 18.4 9.5 1.4#
h 251.1 211.7 179.1 151.4 131.7 125.8 125.8 134.7 153.7 181.4 211.9#
70
t′ 70.0 68.7 66.8 63.3 56.6 51.6 44.4 36.1 27.0 17.7 9.0#
h 293.0 247.7 210.5 178.8 155.7 148.9 148.0 155.6 173.2 199.4 228.8#
80
t′ 80.0 78.6 76.7 73.0 66.0 60.8 53.4 44.8 35.6 26.0 16.7#
h 334.9 287.8 243.6 207.3 181.0 172.8 170.0 176.2 192.6 217.2 245.7#
90
t′ 90.0 88.6 86.5 82.6 75.4 70.0 62.3 53.6 44.1 34.2 24.3#
h 376.9 321.1 275.6 235.4 206.1 195.8 192.3 197.1 212.2 235.6 262.9#
100
t′ 100.0 98.5 96.3 92.3 84.7 79.1 71.3 62.4 52.7 42.4 32.0
h 419.0 357.6 307.9 263.8 231.0 219.9 214.6 218.2 231.5 253.5 279.7
110
t′ 110.0 108.4 106.2 101.9 94.1 88.3 80.2 71.1 61.3 50.6 39.7
h 461.3 394.3 340.1 292.4 255.9 243.3 236.8 239.1 251.0 271.4 296.3
120
t′ 120.0* 118.3* 116.0* 111.6 103.4 97.5 89.2 79.9 69.8 58.9 47.3
h 503.7* 431.0* 372.5* 320.9 281.0 267.0 259.0 260.0 270.2 289.5 313.4
130
t′ 130.0* 128.3* 125.8* 121.3* 112.8 106.7 92.8 88.7 78.4 67.1 55.0
h 546.5* 468.4* 404.5* 349.6* 306.2 290.7 281.0 280.4 289.1 306.9 330.2
140
t′ 140.0* 138.2* 135.7* 130.9* 122.2* 115.8 107.1 97.4 87.0 75.3 62.7
h 589.1* 505.6* 437.8* 377.9* 331.3* 314.2 303.2 301.1 308.1 324.7 346.9
150
t′ 150.0* 148.1* 145.5* 140.6* 131.5* 125.0* 116.1* 106.2 95.5 83.5 70.3
h 632.2* 542.7* 470.5* 406.8* 356.6* 337.8* 325.5* 321.6 327.3 342.7 363.6
160
t′ 160.0* 158.1* 155.3* 150.3* 140.9* 134.2* 125.0* 115.0 104.1 91.8 78.9
h 675.6* 580.8* 503.1* 435.4* 381.9* 361.2* 347.7* 342.2 346.1 360.3 380.1
170
t′ 170.0* 168.0* 165.2* 159.9* 150.3* 143.3* 134.0* 123.7 112.7 100.0 85.7
h 719.2* 618.9* 536.1* 464.3* 406.8* 384.9* 369.9* 362.9 365.4 378.3 396.0
180
t′ 180.0* 177.9* 175.0* 169.6* 159.6* 152.5* 142.9* 132.5* 121.2* 108.2 93.3
h 763.2* 657.1* 569.4* 493.4* 432.1* 408.8* 392.1* 383.4* 384.3* 395.8 411.3
*Extensions of data above 115°C are well above the original data and should be used with care.
#Supersaturated solution.

Fig. 34 Enthalpy-Concentration Diagram for Water/Lithium Bromide Solutions

Fig.35EquilibriumChartforAqueousLithiumBromideSolutions
ReprintedbypermissionofCarrierCorp.

REFERENCES
Tables revised for this edition (R-125, R-170, R-245fa, R-290,
R-600, and R-600a) have been calculated using
Lemmon, E.W., M.L. Huber, and M.O. McLinden. 2007. NIST standard ref-
erence database 23, NIST reference fluid thermodynamic and transport
properties—REFPROP, v. 8.0. Standard Reference Data Program, Na-
tional Institute of Standards and Technology, Gaithersburg, MD.
Many tables (indicated with a ‡ after the fluid name) have not
changed from the 2005 ASHRAE Handbook—Fundamentals. These
tables were calculated using
Lemmon, E.W., M.O. McLinden, and M.L. Huber. 2002. NIST standard ref-
erence database 23, NIST reference fluid thermodynamic and transport
properties—REFPROP, v. 7.0. Standard Reference Data Program, Na-
tional Institute of Standards and Technology, Gaithersburg, MD.
Some tables (indicated with a † following the fluid name) have
not changed from the 2001 ASHRAE Handbook—Fundamentals.
These tables were calculated using
McLinden, M.O., S.A. Klein, E.W. Lemmon, and A.P. Peskin. 2000a. NIST
standard reference database 23: Thermodynamic and transport proper-
ties of refrigerants and refrigerant mixtures—REFPROP, v. 6.10. Stan-
dard Reference Data Program, National Institute of Standards and
Technology, Gaithersburg, MD.
Tables for R-702, R-702p, and R-704 have not changed from the
1997 ASHRAE Handbook—Fundamentals; these tables were calcu-
lated using the programs noted for each fluid.
The underlying sources for these computer packages are listed as
follows by fluid and property. The reference listed under “Equation
of state” was used for vapor pressure, liquid density, vapor volume,
enthalpy, entropy, specific heat, and velocity of sound.
R-12†
Equation of state
Marx, V., A. Pruss, and W. Wagner. 1992. Neue Zustandsgleichungen
für R-12, R-22, R-11 und R-113. Beschreibung des thermodynamischen
Zustandsverhaltens bei Temperaturen bis 525 K und Drücken bis
200 MPa. VDI-Fortschritt-Ber Wärmetechnik/Kältetechnik 19(57). VDI
Verlag, Düsseldorf.
Viscosity
Klein, S.A., M.O. McLinden, and A. Laesecke. 1997. An improved
extended corresponding states method for estimation of viscosity of pure
refrigerants and mixtures. International Journal of Refrigeration 20:208-
217.
Thermal conductivity
McLinden, M.O., S.A. Klein, and R.A. Perkins. 2000b. An extended
corresponding states model for the thermal conductivity of refrigerants
and refrigerant mixtures. International Journal of Refrigeration 23:43-63.
Surface tension
Okada, M. and K. Watanabe. 1988. Surface tension correlations for
several fluorocarbon refrigerants. Heat Transfer—Japanese Research
17:35-52.
R-22†
Equation of state
Kamei, A., S.W. Beyerlein, and R.T. Jacobsen. 1995. Application of
nonlinear regression in the development of a wide range formulation for
HCFC-22. International Journal of Thermophysics 16(5):1155-1164.
Viscosity
Klein et al. 1997. op. cit. (See R-12.)
McLinden et al. 2000b. op. cit. (See R-12.)
Surface tension
Okada, M. and K. Watanabe. 1988. op. cit. (See R-12.)
R-23‡
Equation of state
Penoncello, S.G., E.W. Lemmon, Z. Shan, and R.T. Jacobsen. 2003. An
equation of state for the calculation of the thermodynamic properties of
trifluoromethane (R-23). Journal of Physical and Chemical Reference
Data 32:1473.
Viscosity and thermal conductivity
Shan, Z., S.G. Penoncello, and R.T. Jacobsen. 2000. A generalized model
for viscosity and thermal conductivity of trifluoromethane (R-23).
ASHRAE Transactions 106(1):757-767.
Surface tension
Penoncello, S.G. 1999. Thermophysical properties of trifluoromethane
(R-23). ASHRAE Research Project RP-997, Final Report.
R-32‡
Equation of state
Tillner-Roth, R. and A. Yokozeki. 1997. An international standard
equation of state for difluoromethane (R-32) for temperatures from the
triple point at 136.34 K to 435 K and pressures up to 70 MPa. Journal of
Physical and Chemical Reference Data 26:1273-1328.
Viscosity
Huber, M.L., A. Laesecke, and R.A. Perkins. 2003. Estimation of the
viscosity and thermal conductivity of refrigerants including a new
correlation for the viscosity of R134a. Industrial & Engineering
Chemistry Research 42:3163-3178.
Perkins, R.A. 2002. Personal communication, correlation to data as
implemented in the NIST REFPROP Database. National Institute of
Standards and Technology, Boulder, CO.
Surface tension
Okada, M. and Y. Higashi. 1995. Experimental surface tensions for
HFC-32, HCFC-124, HFC-125, HCFC-141b, HCFC-142b, and HFC-
152a. International Journal of Thermophysics 16(3):791-800.
R-123†
Equation of state
Younglove, B.A. and M.O. McLinden. 1994. An international standard
equation-of-state formulation of the thermodynamic properties of
refrigerant 123 (2,2-dichloro-1,1,1-trifluoroethane). Journal of Physical
and Chemical Reference Data 23(5):731-779.
Viscosity
Tanaka, Y. and T. Sotani. 1995. Thermodynamic and physical properties,
Chapter 2: Transport properties (thermal conductivity and viscosity),
R-123. International Institute of Refrigeration, Paris.
Laesecke, A., R.A. Perkins, and J.B. Howley. 1996. An improved
correlation for the thermal conductivity of HCFC-123 (2,2-dichloro-1,1,1-
trifluoroethane). International Journal of Refrigeration 19:231-238.
Surface tension
Okada and Higashi. 1995. op. cit. (See R-32.)
R-124‡
Equation of state
de Vries, B., R. Tillner-Roth, and H.D. Baehr. 1995. Thermodynamic
properties of HCFC-124. 19th International Congress of Refrigeration,
International Institute of Refrigeration IVa:582-589.
Huber et al. 2003. op. cit. (See R-32.)
Surface tension
R-125
Equation of state
Lemmon, E.W. and R.T. Jacobsen. 2005. A new functional form and
new fitting techniques for equations of state with application to
pentafluoroethane (HFC-125). Journal of Physical and Chemical
Reference Data 34(1):69-108.
Viscosity
Huber, M.L. and A. Laesecke. 2006. Correlation for the viscosity of
pentafluoroethane (R-125) from the triple point to 500 K at pressures up
to 60 MPa. Industrial & Engineering Chemistry Research 45(12):4447-
4453.
Perkins, R.A. and M.L. Huber. 2006. Measurement and correlation of the
thermal conductivity of pentafluoroethane (R-125) from 190 K to 512 K
at pressures to 70 MPa. Journal of Chemical & Engineering Data
51(3):898-904.
Surface tension

R-134a†
Equation of state
Tillner-Roth, R. and H.D. Baehr. 1994. An international standard
formulation of the thermodynamic properties of 1,1,1,2-tetrafluoroethane
(HFC-134a) covering temperatures from 170 K to 455 K at pressures up
to 70 MPa. Journal of Physical and Chemical Reference Data 23:657-
729.
Viscosity
Perkins, R.A., A. Laesecke, J. Howley, M.L.V. Ramires, A.N. Gurova,
and L. Cusco. 2000. Experimental thermal conductivity values for the
IUPAC round-robin sample of 1,1,1,2-tetrafluoroethane (R134a).
NISTIR 6605.
Surface tension
Okada, M. and Y. Higashi. 1994. Surface tension correlation of HFC-134a
and HCFC-123. CFCs, the Day After: Proceedings of Joint Meeting of IIR
Commissions B1, B2, E1, and E2, 541-548.
R-143a†
Equation of state
Lemmon, E.W. and R.T. Jacobsen. 2001. An international standard
formulation for the thermodynamic properties of 1,1,1-trifluoroethane
(HFC- 143a) for temperatures from 161 to 500 K and pressures to 60 MPa.
Journal of Physical and Chemical Reference Data 29(4):521-552.
Viscosity
Surface tension
Schmidt, J.W., E. Carrillo-Nava, and M.R. Moldover. 1996. Partially
halogenated hydrocarbons CHFCl-CF3, CF3-CH3, CF3-CHF-CHF2,
CF3-CH2-CF3, CHF2-CF2-CH2F, CF3-CH2-CHF2, CF3-O-CHF2: Crit-
ical temperature, refractive indices, surface tension and estimates of
liquid, vapor and critical densities. Fluid Phase Equilibria 122:187-206.
R-152a‡
Equation of state
Outcalt, S.L. and M.O. McLinden. 1996. A modified Benedict-Webb-
Rubin equation of state for the thermodynamic properties of R-152a (1,1-
difluoroethane). Journal of Physical and Chemical Reference Data
25(2):605-636.
Viscosity
Klein et al. 1997. op. cit. (see R-12), ECS model of McLinden et al.
(2000b) correlated to data as implemented in NIST REFPROP.
Krauss, R., V.C. Weiss, T.A. Edison, J.V. Sengers, and K. Stephan. 1996.
Transport properties of 1,1-difluoroethane (R-152a). International
Journal of Thermophysics 17:731-757.
Surface tension
R-245fa
Equation of state
Extended corresponding states model of
Lemmon, E.W. and R. Span. 2006. Short fundamental equations of state
for 20 industrial fluids. Journal of Chemical & Engineering Data
51(3):785-850.
Huber, M.L., A. Laesecke, and R.A. Perkins. 2003. Model for the
viscosity and thermal conductivity of refrigerants, including a new
correlation for the viscosity of R-134a. Industrial & Engineering
Chemistry Research 42(13):3163-3178.
Surface tension
Schmidt et al. 1996. op. cit. (See R-143a.)
Pressure-enthalpy diagram based on data of
Defibaugh, D.R. and M.R. Moldover. 1997. Compressed and saturated
liquid densities for 18 halogenated organic compounds. Journal of
Chemical and Engineering Data 42:160-168.
R-404A‡
Equation of state
Lemmon, E.W. and R.T. Jacobsen. 2004a. Equations of state for mixtures
of R-32, R-125, R-134a, R-143a, and R-152a. Journal of Physical and
Chemical Reference Data 33(2):593-620.
Viscosity
Surface tension
Moldover, M.R. and J.C. Rainwater. 1988. Interfacial tension and vapor-
liquid equilibria in the critical region of mixtures. Journal of Chemical
Physics 88:7772-7780.
R-407C‡
Equation of state
Lemmon and Jacobsen. 2004a. op. cit. (See R-404A.)
Viscosity
Surface tension
Moldover and Rainwater. 1988. op. cit. (See R-404A.)
R-410A‡
Equation of state
Viscosity
Surface tension
R-507A‡
Equation of state
Viscosity
Surface tension
R-717 (Ammonia)†
Equation of state
Tillner-Roth, R., F. Harms-Watzenberg, and H.D. Baehr. 1993. Eine neue
Fundamentalgleichung für Ammoniak. DKV-Tagungsbericht 20(II):
167181.
Viscosity
Fenghour, A., W.A. Wakeham, V. Vesovic, J.T.R. Watson, J. Millat, and
E. Vogel. 1995a. The viscosity of ammonia. Journal of Physical and
Chemical Reference Data 24:1649-1667.
Tufeu, R., D.Y. Ivanov, Y. Garrabos, and B. Le Neindre. 1984. Thermal
conductivity of ammonia in a large temperature and pressure range
including the critical region. Berichte der Bunsen-Gesellschaft—Physical
Chemistry 88:422-427.
Surface tension
Stairs, R.A. and M.J. Sienko. 1956. Surface tension of ammonia and of
solutions of alkalai halides in ammonia. Journal of American Chemical
Society 78:920-923.
R-718 (Water/Steam)†
Data computed using
Harvey, A.H., S.A. Klein, and A.P. Peskin. 1999. NIST Standard
Reference Database 10. NIST/ASME steam properties database, v. 2.2.
Standard Reference Data Program.
Equation of state
Wagner, W. and A. Pruss. 2002. The IAPWS formulation 1995 for the
thermodynamic properties of ordinary water substance for general and
scientific use. Journal of Physical and Chemical Reference Data 31:387-
535.
Kestin, J., J.V. Sengers, B. Kamgar-Parsi, and J.M.H. Levelt Sengers.
1984. Thermophysical properties of fluid H2O. Journal of Physical and
Chemical Reference Data 13:175.
Surface tension
IAPWS. 1995. Physical chemistry of aqueous systems: Meeting the needs
of industry. Proceedings of the 12th International Conference on the
Properties of Water and Steam, Orlando. Begell House, Inc., A139-A142.
International Association for the Properties of Steam.

R-744 (Carbon Dioxide)†
Equation of state
Span, R. and W. Wagner. 1996. A new equation of state for carbon
dioxide covering the fluid region from the triple-point temperature to
1100 K at pressures up to 800 MPa. Journal of Physical and Chemical
Reference Data 26:1509-1596.
Viscosity
Fenghour, A., W.A. Wakeham, and V. Vesovic. 1995b. The viscosity of
carbon dioxide. Journal of Physical and Chemical Reference Data 27:
31-44.
Vesovic, V., W.A. Wakeham, G.A. Olchowy, J.V. Sengers, J.T.R.
Watson, and J. Millat. 1990. The transport properties of carbon dioxide.
Journal of Physical and Chemical Reference Data 19:763-808.
Surface tension
Rathjen, W. and J. Straub. 1977. Heat transfer in boiling, Chapter 18,
Temperature dependence of surface tension, coexistence curve, and
vapor pressure of CO2, CClF3, CBrF3, and SF6. Academic Press, New
York.
R-50 (Methane)†
Equation of state
Setzmann, U. and W. Wagner. 1991. A new equation of state and tables
of thermodynamic properties for methane covering the range from the
melting line to 625 K at pressures to 1000 MPa. Journal of Physical and
Chemical Reference Data 20:1061-1151.
Viscosity
Younglove, B.A. and J.F. Ely. 1987. Thermophysical properties of
fluids. II. Methane, ethane, propane, isobutane and normal butane.
Friend, D.G., J.F. Ely, and H. Ingham. 1989. Thermophysical properties
of methane. Journal of Physical and Chemical Reference Data 18(2):
583-638.
Surface tension
Somayajulu, G.R. 1988. A generalized equation for surface tension from
the triple point to the critical point. International Journal of Thermo-
physics 9:559-566.
R-170 (Ethane)
Equation of state,
Bücker, D. and W. Wagner. 2006. A reference equation of state for the
thermodynamic properties of ethane for temperatures from the melting
line to 675 K and pressures up to 900 MPa. Journal of Physical and
Chemical Reference Data 35:205.
Viscosity, and thermal conductivity
Friend, D.G., H. Ingham, and J.F. Ely. 1991. Thermophysical properties
of ethane. Journal of Physical and Chemical Reference Data 20(2):
275-347.
Surface tension
Soares, V.A.M., B.d.J.V.S. Almeida, I.A. McLure, and R.A. Higgins.
1986. Surface tension of pure and mixed simple substances at low
temperature. Fluid Phase Equilibria 32:9-16.
Friend, D.G., H. Ingham, and J.F. Ely. 1991. Thermophysical properties
of ethane. Journal of Physical and Chemical Reference Data 20(2):
275-347.
R-290 (Propane)
Equation of state
Lemmon, E.W., W. Wagner, and M.O. McLinden. 2009. Thermo-
dynamic properties of propane, IV: Equation of state. Journal of
Chemical & Engineering Data (submitted for publication).
Viscosity
Vogel, E., C. Küchenmeister, E. Bich, and A. Laesecke. 1998. Reference
correlation of the viscosity of propane. Journal of Physical and Chemical
Marsh, K., R. Perkins, and M.L.V. Ramires. 2002. Measurement and
correlation of the thermal conductivity of propane from 86 to 600 K at
pressures to 70 MPa. Journal of Chemical & Engineering Data 47:932-
940.
Surface tension
Baidakov, V.G. and I.I. Sulla. 1985. Surface tension of propane and
isobutane at near-critical temperatures. Russian Journal of Physical
Chemistry 59:551-554.
Miyamoto, H. and K. Watanabe. 2000. A thermodynamic property model
for fluid-phase propane. International Journal of Thermophysics
21:1045-1072.
R-600 (n-Butane)
Equation of state
Bücker, D. and W. Wagner. 2006. Reference equations of state for the
thermodynamic properties of fluid phase n-butane and isobutane.
Journal of Physical and Chemical Reference Data 35:929.
Viscosity
Vogel, E., C. Kuchenmeister, and E. Bich. 1999. Viscosity for n-butane
in the fluid region. High Temperatures—High Pressures 31:173-186.
Perkins, R.A., M.L.V. Ramires, C.A. Nieto de Castro, and L. Cusco.
2002. Measurement and correlation of the thermal conductivity of
butane. Journal of Chemical and Engineering Data 47:1263-1271.
Surface tension
Calado, J.C.G., I.A. McLure, and V.A.M. Soares. 1978. Surface tension
for octafluorocyclobutane, n-butane and their mixtures from 233 K to
254 K, and vapour pressure, excess Gibbs function and excess volume
for the mixture at 233 K. Fluid Phase Equilibria 2:199-213.
Coffin, C.C. and O. Maass. 1928. The preparation and physical
properties of α-, β- and γ-butylene and normal and isobutane. Journal of
the American Chemical Society 50(5):1427-1437.
Miyamoto, H. and K. Watanabe. 2001. Thermodynamic property model
for fluid-phase n-butane. International Journal of Thermophysics
22:459-475.
R-600a (Isobutane)
Equation of state
Bücker, D. and W. Wagner. 2006. op cit. (See R-600.)
Viscosity
Vogel, E., C. Küchenmeister, and E. Bich. 2000. Viscosity correlation for
isobutane over wide ranges of the fluid region. International Journal of
Thermophysics 21:343-356.
Perkins, R.A. 2002. Measurement and correlation of the thermal
conductivity of isobutane. Journal of Chemical Engineering Data 47:
1272-1279.
Surface tension
Baidakov and Sulla. 1985. op. cit. (See R-290.)
Miyamoto, H. and K. Watanabe. 2002. A thermodynamic property model
for fluid-phase isobutane. International Journal of Thermophysics
23:477-499.
R-1150 (Ethylene)†
Equation of state
Smukala, J., R. Span, and W. Wagner. 2000. A new equation of state for
ethylene covering the fluid region for temperatures from the melting line
to 450 K and pressures up to 300 MPa. Journal of Physical and Chemical
Holland, P.M., B.E. Eaton, and H.J.M. Hanley. 1983. A correlation of the
viscosity and thermal conductivity data of gaseous and liquid ethylene.
Surface tension
Soares et al. op. cit. (See R-170.)
R-1270 (Propylene)‡
Equation of state
Angus, S., B. Armstrong, and K.M. de Reuck. 1980. International
thermodynamic tables of the fluid state—7: Propylene. Pergamon Press,
Oxford, U.K.

Surface tension
Maass, O. and C.H. Wright. 1921. Some physical properties of
hydrocarbons containing two and three carbon atoms. Journal of the
American Chemical Society 43:1098-1111.
R-702 (Hydrogen)
Thermodynamic data computed using the ALLPROPS database, v. 4.0:
Lemmon, E.W., R.T. Jacobsen, S.G. Penoncello, and S.W. Beyerlein.
1994. Computer programs for the calculation of thermodynamic proper-
ties of cryogens and other fluids. Advances in Cryogenic Engineering
39:1891-1897.
Transport data computed using the NIST 12 database, v. 3.0:
Friend, D.G., R.D. McCarty, and V. Arp. 1992. NIST thermophysical prop-
erties of pure fluids database, v. 3.0. Standard Reference Data Program.
Equation of state, viscosity, and thermal conductivity
McCarty, R.D. 1975. Hydrogen: Technology survey—Thermophysical
properties. NASA SP-3089.
Surface tension
Liley, P.E. and P.D. Desai. 1993. ASHRAE thermophysical properties of
refrigerants.
R-702p (Parahydrogen)
Lemmon et al. 1994. op. cit. (See R-702.)
Transport data computed using the NIST12 database, v. 3.0:
Friend et al. 1992. op. cit. (See R-702.)
Younglove, B.A. 1982. Thermophysical properties of fluids. I. Argon,
ethylene, parahydrogen, nitrogen, nitrogen trifluoride, and oxygen.
Journal of Physical and Chemical Reference Data 11(Supplement No. 1).
Surface tension
Liley and Desai. 1993. op. cit. (See R-702.)
R-704 (Helium)
Lemmon et al. 1994. op. cit. (See R-702.)
Transport data computed using the NIST12 database, v. 3.0:
Friend et al. 1992. op. cit. (See R-702.)
Equation of state
Arp, V.D., R.D. McCarty, and D.G. Friend. 1995. Thermophysical
properties of helium-4 from 0.8 to 1500 K with pressures to 2000 MPa.
NIST Technical Note 1334 (revised).
Surface tension
Liley and Desai. 1993. op. cit. (See R-702.)
R-728 (Nitrogen)‡
Span, R., E.W. Lemmon, R.T. Jacobsen, W. Wagner, and A. Yokozeki.
2000. A reference equation of state for the thermodynamic properties of
nitrogen for temperatures from 63.151 to 1000 K and pressures to
2200 MPa. Journal of Physical and Chemical Reference Data 29:1361-
1433.
Lemmon, E.W. and R.T. Jacobsen. 2004b. Viscosity and thermal
conductivity equations for nitrogen, oxygen, argon, and air. International
Journal of Thermophysics 25:21-69.
Surface tension
Lemmon, E.W. and S.G. Penoncello. 1994. The surface tension of air and
air component mixtures. Advances in Cryogenic Engineering 39:1927-
1934.
R-729 (Air)‡
Equation of state
Lemmon, E.W., R.T. Jacobsen, S.G. Penoncello, and D.G. Friend. 2000.
Thermodynamic properties of air and mixtures of nitrogen, argon, and
oxygen from 60 to 2000 K at pressures to 2000 MPa. Journal of Physical
and Chemical Reference Data 29:331-385.
Lemmon and Jacobsen. 2004b. op. cit. (See R-728.)
Surface tension
Lemmon and Penoncello. 1994. op. cit. (See R-728.)
R-732 (Oxygen)‡
Equation of state
Schmidt, R. and W. Wagner. 1985. A new form of the equation of state for
pure substances and its application to oxygen. Fluid Phase Equilibria
19:175-200.
Lemmon and Jacobsen. 2004b. op. cit. (See R-728)
Surface tension
R-740 (Argon)‡
Equation of state
Tegeler, C., R. Span, and W. Wagner. 1999. A new equation of state for
argon covering the fluid region for temperatures from the melting line to
700 K at pressures up to 1000 MPa. Journal of Physical and Chemical
Lemmon and Jacobsen. 2004b. op. cit. (See R-728.)
Surface tension
Pressure
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