flat wall is formed by connecting layers A, B and C in series. The thicknesses of layers A, B and C are 50 mm, 30 mm and 70 mm, respectively. There is a uniformly distributed 7.7x105 W/m3 heat generation in the A layer, and there is no heat generation in the B and C layers. The surface of the A surface open to the atmosphere is completely insulated. The air at 20 oC is continuously supplied from the outer surface of the C layer (h = 980 W/m2.K) and is cooled. Calculate the outer surface temperatures of layers A and C. Thermal conductivities: kA = 72 W/m K, kB = 108 W/m K, kC = 186 W/m K.

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
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A flat wall is formed by connecting layers A, B and C in series. The thicknesses of layers A, B and C are 50 mm, 30 mm and 70 mm, respectively. There is a uniformly distributed 7.7x105 W/m3 heat generation in the A layer, and there is no heat generation in the B and C layers. The surface of the A surface open to the atmosphere is completely insulated. The air at 20 oC is continuously supplied from the outer surface of the C layer (h = 980 W/m2.K) and is cooled. Calculate the outer surface temperatures of layers A and C. Thermal conductivities: kA = 72 W/m K, kB = 108 W/m K, kC = 186 W/m K. 3m
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