Question: A long pipe 5 cm in diameter passes through a room and is exposed to air at atmospheric pressure and temperature of 2 0 C

A long pipe 5 cm in diameter passes through a room and is exposed to air at atmospheric pressure and temperature of 20C. The pipe surface temperature is 93C.
Assuming that the emissivity of the pipe is 0.6, calculate the radiation heat loss per
foot of length of pipe.

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