An Experimental Study of Radiation Heat Transfer From Parallel Plates With Direction-Dependent Properties

[+] Author and Article Information
W. Z. Black

School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Ga.

R. J. Schoenhals

Purdue University, Lafayette, Ind.

J. Heat Transfer 92(4), 610-615 (Nov 01, 1970) (6 pages) doi:10.1115/1.3449730 History: Received June 13, 1969; Online August 11, 2010


An experimental study of radiation heat transfer from opposing parallel plates is described. Surfaces composed of many small grooves were used to fabricate plates having direction-dependent radiation properties. These plates possessed a collimated emission pattern which was found to influence significantly the heat transfer rate, the largest observed effects being approximately 40 percent. It appears that somewhat larger alterations could be achieved with further effort. The measurements obtained in this study establish the potential value of specially prepared surfaces for certain applications requiring improved thermal performance.

Copyright © 1970 by ASME
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