Repeat the Problem 1.32 but assume that instead of surface temperatures, the given temperatures are those of air on the left and right sides of the wall and that the convective heat transfer coefficients on the left and right surfaces are 6 and 10 W/(m2 K), respectively.Problem 1.32: Repeat the 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 in the schematic diagram below has uniform temperatures of 200C and 50C over the left and right surfaces, respectively. If the thermal conductivities of the wall materials are: kA = 70 W/(m K), kB = 60 W/(m K), kC = 40 W/(m K), and kD = 20 W/(m K), determine the rate of heat transfer through this section of the wall and the temperatures at the interfaces.GIVENComposite wallThermal conductivitieskA = 70 W/(mK)kB = 60 W/(mK)kC = 40 W/(mK)kD = 20W/(mK)Air temperaturesLeft side (TA?^?) = 200CRight side (TD?^?) = 50CContact resistance at each interface (Ri) = 0.1 K/WConvective heat transfer coefficientsLeft side ( hcA ) = 6 W/(m2 K)Right side ( hcD ) = 10 W/(m2 K)ASSUMPTIONSOne dimensional, steady stateconduction
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