A mild steel tank of wall thickness 12 mm contains water at 100°C. The atmospheric temperature is 20°C. the thermal conductivity of mild steel is 50 W/mK, and the heat transfer co-efficients for inside and outside the tank are 2850 and 10 W/m2K, respectively. Calculate the rate of heat loss per m2 of tank surface and the temperature of the outside surface of the tank.

A mild steel tank of wall thickness 12 mm contains water at 100°C. Th

1.	A mild steel tank of wall thickness 12 mm contains water at 100°C. The atmospheric temperature is 20°C. the thermal conductivity of mild steel is 50 W/mK, and the heat transfer co-efficients for inside and outside the tank are 2850 and 10 W/m2K, respectively. Calculate the rate of heat loss per m2 of tank surface and the temperature of the outside surface of the tank.
A.	300.5 W/m2, 45.5°C
B.	495.2 W/m2, 67.6°C
C.	602.6 W/m2, 806°C
D.	795.2 W/m2, 99.52°C
Answer» E.

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