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

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

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter11: Heat Transfer By Radiation

Section: Chapter Questions

Problem 11.66P

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Concept explainers

Radiation

Radiation can be described as the energy in the form of a particular matter or electromagnetic waves traveling in the air and can be in the form of light, sound, and heat. Radiation can be detected through special instruments like X-rays. The radiation from a cooler object is less intense as compared to the radiation from hot objects.

Question

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

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