Dekon vrf system brief introduction
- 2. Variable Refrigerant Flow VRF is popular to use in half of medium-sized commercial buildings (<70,000 ft2) and ~ 1/3 of larger buildings，such as office building, hotel, high grade d e p a r t m e n t , villa etc. Consist of ODUs, IDUs, branch pipes, controller etc. One ODU can drive multi IDUs, with different capacity and appearance. What is VRF?
- 3. DEKON inverter VRF unit production line is a modern automatic production line constructed according to Japan technical requirements and configuration. The production line adopts a power line body and implements intermittent control according to the process cycle requirement. All the products are confirmed through 8 detection procedures, and the quality is controlled by 21 posts. The production line takes the lead in the same industry in China. DEKON production process, procedure and testing are controlled according to the Japanese assembly line level to ensure "zero defect" of units after leaving the production line. Japanese R&D and Management – Japanese Standard Production Line DEKON R&D Institute in Japan
- 4. DEKON VRF Product Lineup 01 • DC inverter DRV-X • Low ambient DRV-A • Low ambient -15 ℃ no decay DRV-E • DC inverter Individual DRV-S • Residential DRV-E
- 5. DRV system DC inverter DRV-X DRV-X Series 25-184.5kW DC inverter Individual DRV-S Low ambient -15 ℃ no decay DRV-C Low ambient DRV-A Residential DRV-E DRV-A Series 25-150kW DRV-C Series 25-100.5kW DRV-S Series 25-90kW DRV-E Series 8-18kW DRV Product Lineup
- 6. DRV-A Low ambient Capacity 8-18 HP 20-36 HP 38-54 HP Model DRV-080AA-DRV-180AA DRV-200AA-DRV360AA DRV-380AA-DRV-540AA DRV-C -15°C without decay Capacity 8-12 HP 16-24 HP 26-36 HP Model DRV-080AC-DRV-120AC DRV-160AC-DRV-240AC DRV-260AC-DRV-360AC DRV-S DC inverter Individual Capacity 8-12 HP 14-16 HP 18-26 HP 28-32 HP Model DRV-080AS-DRV-120AS DRV-140AS-DRV-260AS DRV-280AS-DRV-320AS DRV-X modular all inverter Capacity 8-22 HP 24-44 HP 46-66 HP Model DRV-080AX-DRV-220AX DRV-240AX-DRV-440AX DRV-460AX-DRV-660AX DRV-E residential Capacity 8 kW 10 kW 11.2/12.5 kW 14 kW 16 kW 18 kW Model DRV-080AHT DRV-100AHT DRV-112/125AHT DRV-140AHT DRV-160AHT DRV-180AHT Product Lineup - ODU
- 7. Features and Benefits 02 • DEKON VRF Proprietary features • Other features
- 8. 0 20 40 60 80 100 120 -25 -20 -15 -10 -5 0 5 10 高暖房 標準 10HP taken as an example Why isn't DEKON DRV-Cleaning VRF system configured with auxiliary electric heating? 1. Based on the strong heating performance 2. Due to the low efficiency and high power consumption, auxiliary electric heating increases the electricity cost of user 3. Electric heating more easily leads to the potential risk of fire and had impact on the user's life and property, Japan had canceled all the electric heating products Japanese R&D－Strong Heating, Not Requiring Auxiliary Electric Heating How to implement 15℃ heating without decay? Enhanced vapor injection technology of compressor High frequency technology of compressor Application of large area heat exchanger High greenhouse Standard
- 9. Energy efficiency ratio Ordinary unit + electric heating Enhanced vapor injection unit Energy efficiency comparison of the enhanced vapor injection unit and the ordinary unit (electric heating configured for IDU) 16 HP taken as an example (IDUs: four sets of 11.2 KW air duct units) Heating energy efficiency comparison of units at -15°C ↑+15.1% For the 16 HP unit, based on the condition that the unit starts electric heating for 4 h on average per day, 4320 KWh electricity can be saved in total in three months. For the commercial complex of 100000 m2, based on the 200 W/m2 load, the unit can save 1928570 KWh electricity after operation for three months. -15°C heating Electricity comparison One day (8 h, KWh) One month (240 h, KWh) One quarter (720 h, KWh) Enhanced vapor injection unit 124 3720 11160 Ordinary unit + electric heating 172 5160 15480 Difference 48 1440 4320 Japanese R&D－Strong Heating, Not Requiring Auxiliary Electric Heating
- 10. Why is the non-stop defrosting technology adopted? Non-stop defrosting means that the IDU can continue heating during defrosting under the heating condition. Advantages Comfortable experience Small fluctuations in indoor temperature The unit restores heating rapidly after defrosting ends Japanese R&D－Strong Heating, Not Stopping the Unit during Defrosting Good defrosting effect The unit defrosts the heat exchanger surface quickly (3-5 minutes).
- 11. Japanese R&D - All Inverter Design, Energy Conservation and High Efficiency Advantage 1: Advanced technology DEKON took the lead to launch the full inverter product based on the 24-32 HP independent inverter unit, which boasts the best cost and performance. Advantage 2: High reliability Wear: Fixed frequency + variable frequency: Rotation cannot be implemented, and wear of the inverter compressor greatly surpasses that of fixed speed compressor. Variable frequency + variable frequency: The compressors can implement internal rotation, realizing even wear of compressors and increasing the compressor service life. Oil return: Fixed frequency + variable frequency: The fixed frequency compressor and inverter compressor are inconsistent in the operation frequency and pressure difference, unfavorable to oil return of the system and oil balancing of compressors. Variable frequency + variable frequency: The all inverter compressors are inconsistent in the operation frequency and pressure difference, favorable to oil return of the system and oil balancing of compressors.
- 12. compressor design Advantages Easy installation One section of copper pipe does not need to be installed. Three welding spots and one tee need to be reduced for three modules, so the installation cost is also reduced. Meanwhile, one section of pipeline does not need to be vacuumized. Increased system reliability Reduce leak points that may occur The system does not require adding valve parts for balancing oil, simplifying the system and increasing the reliability. Standard configuration of Japanese products, applied to domestic products for the first time Advantages Less compressors, simplified system control, increased reliability, and reduced fault rate Multiple compressor connected in parallel, complicated oil return system, and added valve parts Japanese R&D - No Oil Balancing Pipe Large Capacity Compressor Liquid pipe Air pipe
- 13. Why is supercooling design adopted? Due to the high supercooling degree, the refrigerant flowing out of the ODU can greatly reduce the flash loss caused when refrigerant flows in the pipeline, ensure balanced distribution of refrigerant between IDUs, and implement good cooling effect of the unit. ● The two-stage supercooling circulation improves the cooling capacity. ● The pressure loss is reduced when refrigerant flows in the pipeline. ● The supercooling degree is increased, conductive to stable operation of the electronic expansion valve. ● The supercooling degree is increased, ensuring the total length increase of piping. DEKON supercooling loop configured for all the systems Japanese R&D - Supercooling Loop Design Note: The supercooling degree directly affects the length of refrigerant connecting pipe. The higher the supercooling degree, the longer the connected pipe. Brand DEKON D brand H brand G brand M brand Number of supercoolin g levels 2 levels 2 levels 2 levels 2 levels 2 levels Total supercoolin g degree 25°C 18.7 28 20°C 19.5°C Brand DEKON D brand H brand G brand M brand Maximum single pipe length 200 m 165 200 165 m 190 m Maximum equivalent pipe length 240 m 190 240 190 m 220 m Maximum total pipe length 1100 1000 1100 1000 1000 Maximum IDU and ODU drop 90/110 90/110 90/110 50/90 90/110 Maximum IDU drop 30 30 40 30 30 Maximum length after the first branch pipe 90 90 90 40 90 Low temperature gaseous refrigerant High temperature liquid refrigerant Low temperature liquid refrigerant Too cold liquid refrigerant Re-super-cooler Supercooling section of heat exchanger Level 2 supercooling Level 1 supercooling
- 14. Why is DC motor adopted? 1. Energy conservation and high efficiency: The efficiency can be increased by about 20%, e.g., when 1 KWh is needed for the AC motor, only 0.8 KWh is needed for the DC motor. 2. Stable system operation: The DC motor can implement stepless speed regulation, making the system operate stably all the time and greatly boosting the efficiency. 3. Lower operating noise CAE analysis Why is large diameter fan blade adopted? 1. The large diameter fan blade can achieve the same air flow at a lower speed and further reduce the noise. 2. The operation is more stable in case of high speed. Speed (RPM) Stepless speed regulation System pressure Efficiency (%) DC motor AC motor Speed (RPM) Japanese R&D – DC fan motor and large fan blade
- 15. Stepless capacity regulation The DC inverter control technology can implement connection control on the compressor speed and system output and intelligent regulation of the system output according to the actual operation capacity requirement, ensuring linear capacity output from low speed to regulated speed, realizing stepless regulation of compressor and meeting the higher comfort requirement. Electronic expansion valve control technology Electronic expansion valves are set for all the ODUs and IDUs to ensure effective refrigerant distribution among ODUs and IDUs, achieve the same effect and comfort in different rooms. Frequency (Hz) Stepless regulation Step regulation Capability requirement Electronic expansion valve Omnidirectional quiet technology = Compressor silencing technology + FAN technology (fluid analysis) + Unique quiet technology Outdoor temperature peak Night mode Night mode started Wide operating range Ambient temperature of cooling: -5~50°C DB Ambient temperature of heating: -20~24°C DB Comfortable and Energy Saving Other features Cooling/ Heating type Cooling Heating -20℃WB
- 16. A B C A B C A B C Rotation operation control The long service life (uniform wear control) is achieved by uniformizing the unit operation time. Reliability is enhanced through the optimal oil balance (oil balance control). The compressor cannot be damaged easily, and the fault rate is low. Backup operation control (emergency operation) When one unit fails, the other units can continue normal operation, ensuring high comfort for the customer and not affecting normal use. Stable and Reliable
- 17. ODU ODU High drop of long connection pipes Maximum connection pipe length: 240 m; maximum total connection pipe length: 1100 m IDU and ODU drop: 110 m; IDU drop: 30 m Product lineup covering 10 types of IDUs; a maximum of 64 IDUs can be connected Maximum static pressure of ODU air duct: 80 Pa The first branch pipe Outdoor branch pipe A B H1 = 0 m H2≤20m L1 ≤ 10 m When ODU is at the upper position: ≤ 110 m When ODU is at the lower position: ≤ 90 m L3 ≤ 40 m L2 ≤ 200 m (equivalent length less than 240 m) Symbol meanings: H0 Drop between outdoor modules L1 Inter-module spacing L2 Total length of one-way pipeline L3 Total one-way length after the first branch pipe H2 Inter-IDU drop Flexible Installation
- 19. Round flow cassette 2-way Cassette 1-way Cassette Floor Ceiling Standard ducted unit Ultra-thin ducted unit High ESP ducted unit Wall-mounted 10 major series and 95 types of specifications High capacity ducted unit Fresh air handling unit Product Lineup - IDU
- 20. Cap. (kW) Round flow cassette 1-way Cassette 2-way Cassette Ultra-thin ducted unit Standard ducted unit High ESP ducted unit Floor Ceiling Wall-mounted DCA DCS DCD DLD DLD DHD DCF DWM 2.2 ● ● 2.5 ● 2.8 ● ● ● ● ● ● ● 3.2 ● 3.6 ● ● ● ● ● ● ● 4.0 ● ● 4.5 ● ● ● ● ● 5.0 ● 5.6 ● ● ● ● ● ● ● 6.3 ● ● ● 7.1 ● ● ● ● ● ● ● 8.0 ● ● ● 9.0 ● ● ● ● 10.0 ● ● ● ● 11.2 ● ● ● ● ● 12.5 ● ● ● ● ● 14.0 ● ● ● ● ● 16.0 ● The DRV-Series product has rich product line and various capacities, thus meeting the different demands of clients. The reasonable configuration can lower customer investment and operating costs. High ESP ducted unit: 19.5/25.5/41/52/62/79 kW Fresh air handling unit: 25/28/45/56 kW IDU Capacity Table
- 21. 4-way cassette type DCA 360° sounded supply air Supply air directly 3D spiral impeller, low noise fan Small size design, easy installation 1100 mm pump liftting application: Office, canteen, living room Cooling capacity kW 2.8 3.6 4.5 5.0 5.6 6.3 7.1 8.0 9.0 10.0 11.2 12.5 14.0 16.0 Body dimension (L×W×H) mm 840*840*230 840*840*300 Panel dimension (L×W×H) mm 950*950*50 DRV IDU
- 22. 2-way cassette type DCD Cooling capacity kW 2.8 3.6 4.5 5.6 7.1 8 9 10 11.2 12.5 14 Panel dimension mm 1083*630*33 1203*630*33 1443*630*33 1923*630*33 Body dimension mm 840*520*315 960*520*315 1200*520*315 1680*520*315 Application: Narrow corridor/hall DRV IDU 750mm pump lifting Small size design, easy installation Compact impeller, low noise fan Supply air directly Appropriate for the narrow hall
- 23. 1-way cassette type DCS Cooling capacity kW 2.8 3.6 4.5 5.6 7.1 Panel dimension mm 1070*520*33 1380*550*33 Body dimension mm 870*460*250 1180*495*290 Application: Narrow areas 750mm pump lift Compact motor and fan, low noise running DRV IDU Small size design, easy installation Wide angle supply air
- 24. Cooling capacity kW 2.2/2.5 2.8/3.2 3.2/3.6/4.0 4.5/5.0 5.6 6.3/7.1 Dimension mm 700*450*200 920*450*200 1140*450*200 Ultra-thin type DLD-AC Application: Room which has narrow ceiling Body thickness 200mm, compact design 6-P motor, ESP can be up to 12Pa Smart installation Small size and low noise fan DRV IDU
- 25. Standard type DLD-AB Application: Office/room/hall which has narrow ceiling Body thickness 250mm, compact design Large range of supply ESP (max. up to 70Pa) Smart installation 1100mm pump lifting High efficiency and low noise fan DRV IDU Cooling capacity kW 7.1 8 9 10 11 12.5 14 16 Dimension mm 1350*515*250 1350*557*292
- 26. High static pressure duct type DHD Application: Shopping mall/meeting room/warehouse which has large space 6-P motor, large range of ESP Can be connected high ESP duct, for max. 100Pa Low noise fan ( advanced in industry) Cooling capacity kW 10 11.2 12.5 14 Dimension mm 1200*750*400 DRV IDU
- 27. Floor ceiling type DCF Floor standing or ceiling 2.8kW~14kW Large range of supply air Easy installation and maintenance Large-diameter and low noise fan Application: Space without ceiling Cooling Capacity kW 2.8 3.6 5.6 7.1 9 11.2 12.5 14 Dimension mm 905*673*243 1288*673*243 1672*673*243 DRV IDU
- 28. Wall mounted type DWM Streamlined design Unique double-deck, automtic swing, wide range of supply air Smooth air flow field installation, convenient maintenance Filter &panel, convenient to clean Application: Small space which has no ceiling Cooling Capacity kW 2.8 3.6/4.0 5.6 6.3/7.1 Dimension (mm) 970*315*235 1100*315*235 DRV IDUs
- 29. Advantages: 1. In comparison to modular units, the initial investment is equivalent, and the operating cost is reduced by about 20%. 2. IDU can integrate the purifying function (DEKON showcases strengths in the purifying field). 3. Static pressure can be customized flexibly as needed. Solution to Large Space Sites – Large Capacity Duct-type IDU Maximum capacity 20 HP Air outlet static pressure 300 Pa Maximum air flow 9000 m3/h Cooling capacity kW 19.5 25.5 41 52 62 79 Dimension mm 1451*1204*608 1951*1604*808 2293*1604*1008
- 30. Intelligent Control System 04 • Independent control • Centralized control • BMS control system • Intelligent management and household-based charging system • Intelligent hotel chain
- 31. ■ Independent control Operation, shutdown, temperature setting, swing, sleep, power failure memory, etc. Mode switching Operating status display on the LCD screen Temperature regulation and timed power-on/off function Fault code display function ■ Centralized control Able to implement centralized control or separate control on 64 IDUs (8 systems) Mode locking and single unit query/all control functions Setting air conditioner operation start and end time Fault indication, uniform control interface and humanized operation interface Mode switching The maximum control signal line of 1000 m Operating status monitoring function and fault code display function Intelligent Control
- 32. ■ Building automation (BMS) system DRV-Adopts multiple automatic control systems to easily access the building automation system such as MODBUS/LONWORKS/BACNET, and full automatic control of the system is realized through a computer. The control function is powerful, and operations are simple and clear. Connecting to a maximum of 1024 IDUs and 16 sets of systems Powering on/off the air conditioner, controlling operation, and monitoring the operating status Monitoring the IDU fault code Monitoring and setting the IDU temperature Monitoring and switching the operating mode Setting remote controller permissions Free grouping and zone management Perfect schedule management function Historical data record Schedule control function of week, month and year Single-unit or centralized operation, shutdown, temperature setting, mode switching, etc Interlock control (fire alarm, door lock, fault, etc.) Intelligent Control LonWorks system Ethernet Fire control Disaster prevention Lighting BACnet system Ethernet Fire control Disaster prevention Lighting
- 33. Intelligent management and household-based charging system: The system provides the complete unit monitoring and control functions and can realize all-dimensional dynamic monitoring on the ODU operating status. Network control is realized for a maximum of 2048 IDUs in 32 systems, and the control signal of the data acquisition m o d u l e can reach the maximum distance of 1200 m. The cooling system topology map can be set and displayed visually. The market-tested electricity fee distribution algorithm implements convenient electricity fee distribution management, and detailed h i s t o r i c a l data forms can be generated. User accounts, electricity prices and groups can be set. The user can realize flexible management on household-based charging of VRF units. System energy saving settings: 1) Temperature management - intelligent temperature management adopted for cooling/heating; 2) air conditioner use time management Intelligent Control R5232-R5485 module Data acquisition module Data acquisition module Data acquisition module Ammeter Ammeter Ammeter Maximum 64 Maximum 64 Maximum 64
- 34. Intelligent hotel chain The specially designed hotel door card can be selected for application occasions such as hotels. When the door card is inserted, the IDU can be controlled freely; when the door card is removed, the IDU is powered off automaDEKONlly and stays in the standby mode. Note: The IDU cannot be disconnected from the power supply when the door card is removed; otherwise liquid return will occur in the system, damaging the compressor. Intelligent Control
- 35. DEKON We have been working hard all the way.