Answered: Calculate the rate of heat transfer by…

Calculate the rate of heat transfer by radiation from an unlagged steam pipe, 50 mm, o.d. at 393 K (120° C) to air at 293 K (20° C). Assume emissivity 'e' of 0.9.

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 11.53P

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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.

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Calculate the rate of heat transfer by radiation from an unlagged steam pipe, 50 mm, o.d. at
393 K (120° C) to air at 293 K (20° C). Assume emissivity 'e' of 0.9.

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