Consider a cubic furnace that is 0.2m long on each side. The two ends have diffuse, black surfaces that are maintained at 500 K (bottom surface) and 600 K (top surface). The side surfaces are also diffuse and black and at a temperature of 800 K. Set up the radiation network with 3 surfaces (surface 1-Bottom; surface 2-Top; surface 3-side surfaces and answer the following questions: Required:
What is the net heat transfer from the top surface (surface 2) to other surfaces?