A solid plate, with a thickness of 15 cm and a thermal conductivity of 80 W mK, is being cooled at the upper surface by air The air temperature is 10 deg C, while the temperatures at the upper and lower surfaces of the plate are 50 and 60 deg C, respectively Determine the convection heat transfer c...

The upper surface of a solid plate is being cooled by air The air convecti ...

A solid plate, with a thickness of 15 cm and a thermal conductivity of 80 W/mK, is

Question:

A solid plate, with a thickness of 15 cm and a thermal conductivity of 80 W/mˆ™K, is being cooled at the upper surface by air. The air temperature is 10°C, while the temperatures at the upper and lower surfaces of the plate are 50 and 60°C, respectively. Determine the convection heat transfer coefficient of air at the upper surface and discuss whether the value is reasonable or not for force convection of air.

Alr, T = 10°C Ts = 50°C Ts2 = 60°C L= 15 cm