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RESEARCH PAPERS

Periodic Heat Transfer in Straight Fins

[+] Author and Article Information
J. W. Yang

Department of Mechanical Engineering, State University of New York at Buffalo, Buffalo, N. Y.

J. Heat Transfer 94(3), 310-314 (Aug 01, 1972) (5 pages) doi:10.1115/1.3449938 History: Received June 22, 1971; Online August 11, 2010

Abstract

The characteristics of heat transfer in straight fins with periodic variation of base temperature have been determined analytically. The heat-transfer process is governed by three dimensionless parameters: the conventional fin parameter N, the frequency parameter B, and the amplitude parameter A. The effects of these parameters on the instantaneous and average heat flow rates, axial and time-wise temperature distributions, and instantaneous and average fin efficiencies are demonstrated by several examples. In general, the time-average fin efficiency is reduced by the periodic variation of the base temperature.

Copyright © 1972 by ASME
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