A furnace is of cylindrical shape with LED2 m. The base is at T1 = 600 K. Side and top surfaces of the furnace are maintained at uniform temperatures of T2 = 1300 K, and T;= 800 K, respectively. Assume all surfaces are black. A Az A Fig. 1 Furnace Determine, a) The view factors from base to the top surface F13 and from the base to the side F12. b) The net rate of radiation heat transfer from surface 1 to the other surfaces during steady operation