Consider a hemispherical furnace of diameter D = 5 m with a flat base, as shown in Fig. P21€“89. The dome of the furnace is black, and the base has an emissivity of 0.7. The base and the dome of the furnace are maintained at uniform temperatures of 400 and 1000 K, respectively. Determine the net rate of radiation heat transfer from the dome to the base surface during steady operation.

Transcribed Image Text:

Black e = 0.7 5 m-