Practical Fin Shapes for Surface-Tension-Drained Condensation

[+] Author and Article Information
M. A. Kedzierski

National Institute of Standards and Technology, Gaithersburg, MD 20899

R. L. Webb

The Pennsylvania State University, University Park, PA 16802

J. Heat Transfer 112(2), 479-485 (May 01, 1990) (7 pages) doi:10.1115/1.2910403 History: Received December 23, 1988; Revised August 03, 1989; Online May 23, 2008


This paper introduces a new family of high-performance fin profiles for surface-tension-drained condensation. Previously described profiles for this situation have been defined in terms of the fin curvature and arc length. The existing profiles are generally not suitable for commercial manufacture. The fin profiles presented in this paper are conveniently defined by the fin tip radius, the fin height, and the fin base thickness. Consequently, the designer may easily specify a fin shape with parameters that are compatible with those used by the manufacturing industry. The heat transfer performance of the new profiles provides an improvement over existing, commercial fin shapes. An analysis is presented to show the R-11 condensation performance of the new profiles as a function of the geometric variables. A recommended design practice for fins for surface-tension-drained condensation is given also.

Copyright © 1990 by The American Society of Mechanical Engineers
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