Row Effect for R-11 Condensation on Enhanced Tubes

[+] Author and Article Information
R. L. Webb, C. G. Murawski

Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16802

J. Heat Transfer 112(3), 768-776 (Aug 01, 1990) (9 pages) doi:10.1115/1.2910452 History: Received April 26, 1989; Revised October 01, 1989; Online May 23, 2008


Experimental results of a condensation row effect study on enhanced tubes are presented. A test cell was constructed to condense Refrigerant-11 on the shell side of a vertical bank of five horizontal tubes. Four distinctly different commercially available tubes were tested. The tubes are a 1024-fpm integral fin, the Wolverine Turbo-C, Wieland GEWA-SC, and the Tred-D. A modified Turbo-C tube was also tested. Experimental and visual observations are used to understand the row effect due to condensate loading. By plotting the data in the form of the local condensation coefficient versus condensate Reynolds number, the results may be interpreted for any number of tube rows, up to the maximum Reynolds numbers tested. Bundle average condensation coefficients may be established by integrating the h versus Re values over the number of tube rows.

Copyright © 1990 by The American Society of Mechanical Engineers
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