Heating of a plate by solar energy
A thin metal plate is insulated on the back and exposed to solar radiation at the front surface. The exposed surface of the plate has an absorptivity of 0.6 for solar radiation. If solar radiation is incident on the plate at a rate of 700 w/m and the surrounding air temperature is 25 c, determine the surface temperature of the plate when the heat loss by convection and radiation equals the solar energy absorbed by plate. Assume the combined convection and radiation heat transfer coefficient to be 50 w/m.k.