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Advanced Course in Heat Exchangers: Theory and Practice. ICHMT Symposium.
1981, Dubrovnik, Croatia

DOI: 10.1615/ICHMT.1981.AdvCourseHeatExch


ISBN Print: 978-0-07062-806-9

COMPACT HEAT EXCHANGERS
Compact and Enhanced Heat Exchangers

pages 425-468
DOI: 10.1615/ICHMT.1981.AdvCourseHeatExch.300
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RÉSUMÉ

This paper starts with the definitions of compact and enhanced heat exchangers, and describes their unique features, subtle characteristics, surface geometries, and flow arrangements. For compact and enhanced heat exchangers, gas is the fluid on one side of the exchanger. Commonly used surfaces are the regenerative type and extended surface type. The latter includes plate-fin and tube-fin surfaces. The plate-fin surfaces considered are plain, wavy, offset strip, louver, perforated, and pin fins. There are two types of tube-fin surfaces: continuous fins on a tube array, and individually finned tubes. The continuous fins considered are the plain, wavy and louver fins on an array of circular or flat tubes. The fins on individual tubes considered are the circular (plain helical), segmented, studded, slotted, and wire loop fins. A comprehensive review of the literature has been made and the nondimensional single-phase heat transfer and flow friction characteristics are presented for all these surfaces. The information includes a summary of local flow structure and performance, analytical solutions, and experimental correlations.

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