TECHNICAL PAPERS: Evaporation, Boiling, and Condensation

Mechanism of Nucleate Boiling Heat Transfer Enhancement From Microporous Surfaces in Saturated FC-72

[+] Author and Article Information
J. H. Kim, S. M. You

The University of Texas at Arlington, Department of Mechanical and Aerospace Engineering, P.O. Box 19023, Arlington, TX 76019-0023

K. N. Rainey

Los Alamos National Laboratory, P.O. Box 1663, MS-B258, Los Alamos, NM 87545-1663

J. Y. Pak

Behr America Inc., 2700 Daley Dr., Troy, MI 48033

J. Heat Transfer 124(3), 500-506 (May 10, 2002) (7 pages) doi:10.1115/1.1469548 History: Received April 26, 2001; Revised November 16, 2001; Online May 10, 2002
Copyright © 2002 by ASME
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Pool boiling test facility
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SEM photo of DOM microporous coating (top view)
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Reference pool boiling curves
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Effect of area (fins) on boiling curve (Rainey and You 21)
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Photographs of boiling behavior from plain and microporous wires: (a) plain wire, 6.0 W/cm2 ; (b) microporous wire, 6.2 W/cm2 ; (c) plain wire; 16.0 W/cm2 ; and (d) microporous wire, 16.2 W/cm2 .
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Latent heat flux contribution for plain and microporous wires (increasing heat flux)
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Average diameter and frequency of bubbles departing from the wire
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Bubble frequency distributions: (a) plain wire; (b) microporous wire.




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