Question

In a warehouse, a cold room that is maintained at
10^{o}*C* has a wall made of two layers of
materials. The inner layer has a thickness of 2 cm and a thermal
conductivity of 0.1 W/mK. The outer layer, which is 4 cm thick, has
a thermal conductivity of 0.04 W/mK. The temperature of the outside
ambient is 30^{o}*C* . The convective heat transfer
coefficients on the outside and the inside of the wall are 40
W/m^{2}K and 20 W/m^{2}K respectively.

- Calculate the rate of heat flow through the wall per unit area.

- Calculate the temperature of the interface,
*T interface*between the two layers.

Answer #1

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Problem #2 (5 points)
Expect that

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