Repeat Problem 1.32 but assume that instead of surface temperatures, the given temperatures are…

Repeat Problem 1.32 but assume that instead of surface temperatures, the given temperatures are those of the air on the left and right sides of the wall and that the convection heat transfer coefficients on the left and right surfaces are 6 and 10 W/m2 K, respectively.

Problem 1.32

Repeat Problem 1.31, including a contact resistance of 0.1 K/W at each of the interfaces.

Problem 1.31

A section of a composite wall with the dimensions shown below has uniform temperatures of 200°C and 50°C over the left and right surfaces, respectively. If the thermal conductivities of the wall materials are: and , determine the rate of heat transfer through this section of the wall and the temperatures at the interfaces.

 

 

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