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International Heat Transfer Conference 6

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)


Ramesh K. Shah
University of Kentucky, Lexington, KY; and Delphi Harrison Thermal Systems, Lockport, NY

DOI: 10.1615/IHTC6.1570
pages 193-199


A variety of surfaces are being used in compact heat exchanger applications. The selection criteria for these surfaces are dependent upon the qualitative and quantitative considerations. The quantitative considerations discussed in the paper include a performance comparison of heat exchanger surfaces. Summarized in the paper are over thirty different methods that have been proposed in the literature to compare the heat transfer and pressure drop characteristics of these surfaces. A best performing surface thus selected may not be an optimum heat exchanger surface for a given application as explained in the paper. Hence, there is no need to fine tune the selection of a surface individually. As a result, the selection criteria should be as meaningful, direct and simple as possible. Recommendations are made for such comparison methods.

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