RESEARCH PAPERS: Natural and Mixed Convection

Natural Convection Heat Transfer From Arrays of Isothermal Triangular Fins in Air

[+] Author and Article Information
A. Karagiozis, G. D. Raithby, K. G. T. Hollands

Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1

J. Heat Transfer 116(1), 105-111 (Feb 01, 1994) (7 pages) doi:10.1115/1.2910842 History: Received November 01, 1992; Revised April 01, 1993; Online May 23, 2008


Measurements of the heat transfer to air by natural convection from arrays of isothermal triangular fins on a vertical base plate are reported for several array geometries, for a large range of Rayleigh number, and for two orientations (vertical fins and horizontal fins). The data are believed to be the first available for this important geometry. A single equation is provided that correlates the measured Nusselt numbers for the vertical orientation with an rms error of 4.8 percent. The horizontal fin orientation was shown to have inferior heat transfer performance.

Copyright © 1994 by The American Society of Mechanical Engineers
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