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TECHNICAL PAPERS: Heat Transfer Enhancement

Condensation Heat Transfer on Enhanced Surface Tubes: Experimental Results and Predictive Theory

[+] Author and Article Information
M. Belghazi, C. Marvillet

Groupement pour la Recherche sur les Echangeurs Thermiques (GRETh), CEA Grenoble, 17, avenue des martyrs, 38054 Grenoble cedex 9, France

A. Bontemps

Laboratoire des Ecoulements Géophysiques et Industriels (LEGI/GRETh), Université Joseph Fourier, Grenoble, France, CEA Grenoble, 17, avenue des martyrs, 38054 Grenoble cedex 9, Francee-mail: andre.bontemps@cea.fr

J. Heat Transfer 124(4), 754-761 (Jul 16, 2002) (8 pages) doi:10.1115/1.1459728 History: Received January 25, 2001; Revised October 30, 2001; Online July 16, 2002
Copyright © 2002 by ASME
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References

Figures

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Optical microscope view of a notched fin tube (Gewa C+)
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Heat transfer coefficient of the first row during condensation of HFC134a
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Evolution of the Gewa C+ HTC along the bundle during condensation of HFC 134a
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Evolution of mixture HTC on Gewa C+ and K19 tubes
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Flooding of fins by the gaseous diffusion layer
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Evolution of the ratio αjl as a function of the row number
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Experimental and predicted HTC during condensation of HFC 134a on Gewa C+ and K32 tubes
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The shape of the Gewa C+ tube. Definitions of parameters used
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Variation of the vapor interface radius

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