Ejercicio uno procesos
- 1. 1 CHAPTER XX COMPUTATİONAL CONDUCTİON HEAT TRANSFER EXAMPLE SOLUTIONS 1) An iron rod L= 5 cm long of diameter D= 2 cm with thermal conductibity k= 50 W/m.C placed from a wall and is exposed to an ambient at T∞= 20 C and h=100 W/m2 .C. The base of rod is at To = 320 C and its tip is insulated. Assuming one dimensional conduction, calculate temperature distribution along the rod and the rate of heat flow into the abient solution.
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- 5. 5 2) A 1 cm diameter 3 cm long carbon steel fin transfers heat from the wall of a heat exchanger at 200 C to a fluid at 25 C with ℎ̅= 120 W/m2 .C. Fin tip is insulated. Determine temperature distribution utilning a grip spacing of ∆x= L/4.
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- 7. 7 3) Consider two dimensional steady conduction in a squaree cross section with prescribed surface temperatures. a) Determine the temperatures at nodes 1,2,3 and 4. Estimate the midpoint temperature. Solution
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- 9. 9 4) A long bar of rectangular cross section is 60 mm by 90 mm on a side and has a thermal conductivity of 1 W/m.K. One surface is exposed to convection process with air at 100 C and a convection coefficient of 100 W/m2 .C while remaining surfaces are maintained at 50 C. Using a grid spacing of 30 mm determine nodal temperatures and heat rate unit length normal to the page into bar from the air.
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- 12. 12 5) Develop a numerical solution fort he plate shown: A 0.5 MW/m3 energy is generated uniformly within the body. Take ∆X= L/2.
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