An Enclosure Theory for Radiative Exchange Between Specularly and Diffusely Reflecting Surfaces

[+] Author and Article Information
E. M. Sparrow, E. R. G. Eckert, V. K. Jonsson

Heat Transfer Laboratory, Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minn.

J. Heat Transfer 84(4), 294-299 (Nov 01, 1962) (6 pages) doi:10.1115/1.3684375 History: Received July 28, 1961


A systematic and convenient method has been devised for the calculation of the radiant interchange within an enclosure containing both specularly reflecting and diffusely reflecting surfaces. The new formulation makes use of simple properties of the images formed by plane mirrors, and this does away with the need to keep account of individual rays as they are reflected on the specular surfaces. With this image technique, heat-transfer calculations for a specular-diffuse enclosure are no more difficult than those for a fully diffuse enclosure. The method is illustrated by application to specific enclosure geometries.

Copyright © 1962 by ASME
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