Question: A steam pipe 5.08cm thick in outside diameter has an outside surface temperature of 176.67C. The outside surface is coated with a material 5.08cm thick,

A steam pipe 5.08cm thick in outside diameter has an outside surface temperature of 176.67C. The outside surface is coated with a material 5.08cm thick, whose thermal conductivity K, varies with the temperature in oC according to K= 0.5 + 5*10^-4 with K in cal/sec cm^2(oC/cm). The outside surface of the coating is at 37.78oC. Calculate the heat loss per cm of pipe length.

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