A plane wall is a composite of two materials, A and B. The wall of material A has uniform heat generation q = 1.5 X 106 W/m3, kA = 75 W/m · K, and thickness LA = 50 mm. The wall material B has no generation with kB = 150 W/m · K and thickness LB = 20 mm. The inner surface of material A is well insulated, while the outer surface of material B is cooled by a water stream with T00 = 30°C and h = 1000 W/m2 · K.
1. Sketch the temperature distribution that exists in the composite under steady-state conditions.
2. Determine the temperature T0 of the insulated surface and the temperature T2 of the cooled surface.