Assignment 1 - HEAT TRANSFER - CHEM ENG 2A04 ASSIGNMENT #1...

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HEAT TRANSFER - CHEM ENG 2A04 ASSIGNMENT #1 Date Given: January 11, 2010 Due Date: January 18, 2010 Question #1 The front side of an isothermal computer chip is exposed to the flow of coolant at T = 10 o C. The square chip has sides of length w = 10mm on a side and its side and back surfaces are well-insulated. The chip temperature must not exceed T = 90 o C . a) If the coolant is air with a convection coefficient of h = 200 W/m 2 K, what is the maximum allowed chip power? b) If the coolant is a dielectric liquid with a convection coefficient of h = 3500 W/m 2 K, what is the maximum allowed chip power? Compare to your result in (a) and explain the difference. Question #2 Consider a square aircraft window of width w = 400mm on a side. The temperature difference between the inside and the outside surfaces is maintained constant at 90 o C . a) Plot a graph of heat loss through a window of thickness of 20mm as a function of the thermal conductivity of the glass material in the range 0.001 W/m
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Assignment 1 - HEAT TRANSFER - CHEM ENG 2A04 ASSIGNMENT #1...

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