A furnace is of cylindrical shape with R = H = 3 m. The base, top, and side surfaces of th...

A furnace is of cylindrical shape with R = H = 3 m. The base, top, and side surfaces of the furnace are all black and are maintained at uniform temperatures of 500,700, and 1400 K. respectively. Determine the net rate of radiation heat transfer to or from the top surface during steady operation.