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RESEARCH PAPERS

Heat Transfer by Conduction and Radiation in Absorbing and Scattering Materials

[+] Author and Article Information
R. Viskanta

Purdue University, Lafayette, Ind.

J. Heat Transfer 87(1), 143-150 (Feb 01, 1965) (8 pages) doi:10.1115/1.3689035 History: Received May 22, 1964

Abstract

Heat transfer by simultaneous conduction and radiation in thermal radiation absorbing, emitting, and scattering materials is investigated theoretically. Consideration is given to a one-dimensional system consisting of two diffuse, nonblack, isothermal parallel plates separated by a finite distance. The space between the two plates is filled with an isotropically scattering material. The problem is formulated exactly in terms of integrodifferential and integral equations. The results define as well as illustrate several mechanisms of radiant energy transfer and show how one mode of heat transfer influences the other. The numerical results reveal the effect of the system parameters on the heat transfer characteristics. In particular, it is shown that the effect of albedo on the heat transfer is small. Albedo being the parameter which represents the fraction of the incident pencil of radiation which has been scattered.

Copyright © 1965 by ASME
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