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RESEARCH PAPERS

Effect of Polarization on Radiant Heat Transfer Through Long Passages

[+] Author and Article Information
D. K. Edwards

UCLA, Los Angeles, Calif.

R. D. Tobin

Rocketdyne, A Division of North American Aviation, Canoga Park, Calif.

J. Heat Transfer 89(2), 132-138 (May 01, 1967) (7 pages) doi:10.1115/1.3614335 History: Received March 28, 1966; Revised July 25, 1966; Online August 25, 2011

Abstract

Theoretical predictions of radiant transfer through long passages are shown to be quite sensitive to directional variation of radiation characteristics and to polarization of the radiation. With use of the Fresnel relations for specular reflection to find the amount and state of polarization of radiation reflected by dielectric and metallic walls, values of transmittance are calculated and tabulated for long passages of square and infinite slot cross sections with lengths of up to 30 times the lateral distance between walls. Differences in answers by factors up to 14 are shown to result from neglect of directional variation, polarization, and phase change in the reflection process. A simple, approximate analytical relation is presented to permit transmittance and integrated transmittance obtained for isothermal passage walls to be used to calculate transfer in passages with adiabatic or refractory walls.

Copyright © 1967 by ASME
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