Cooling water flows over a hot metal plate with a surface area of 0.5 m2 in a manufacturing process. The temperature of the cooling water is 15°C, while the metal plate’s surface temperature is maintained at 200°C. If the convective heat transfer rate is 68.0 W/m2-K, determine the rate of convective heat transfer from the plate.
Given: A = 0.5 m2; Tf = 15°C; Ts = 200°C; h = 68.0 W/m2-K
Qconv = hA(Tf -Ts) = (68.0 W/m2-K)(0.05 m2)(15°C - 200°C) = -6,290 W = 6.29 kW
The heat is transferred from the plate to the water.
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