Answered: A surface is maintained at 100°C and is…

A surface is maintained at 100°C and is enclosed by very large surrounding surfaces at 80°C. What is the net radiant flux (W/m2) from this surface if its emissivity is (a) 1.0 or (b) 0.8?

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 11.32P

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Concept explainers

Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.

Question

9.
A surface is maintained at 100°C and is enclosed by
very large surrounding surfaces at 80°C. What is the
net radiant flux (W/m?) from this surface if its
emissivity is (a) 1.0 or (b) 0.8?

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