Two concentric spheres with diameters of 5 cm and 10 cm are having the surface temperatures maintained at 200°C and 100°C, respectively. The enclosure between the two concentric spherical surfaces is filled with nitrogen gas at 1 atm. If both concentric sphere surfaces are black (ε = 1), determine the rate of heat transfer on the inner surface.

Transcribed Image Text:

Do = 10 cm To= 100°C -Lc D = 5 cm T= 200°C E= 1