Mechanism of Nucleate Boiling Heat Transfer Enhancement From Microporous Surfaces in Saturated FC-72-Reference-Cited by-同舟云学术

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

Published:2002-05-10 Issue:3 Volume:124 Page:500-506
ISSN:0022-1481
Container-title:Journal of Heat Transfer
language:en
Short-container-title:

Author:

Kim J. H.¹,Rainey K. N.²,You S. M.¹,Pak J. Y.³

Affiliation:

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

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

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

Abstract

The present study is an experimental investigation of the nucleate pool boiling heat transfer enhancement mechanism of microporous surfaces immersed in saturated FC-72. Measurements of bubble size, frequency, and vapor flow rate from a plain and microporous coated 390 μm diameter platinum wire using the consecutive-photo method were taken to determine the effects of the coating on the convective and latent heat transfer mechanisms. Results of the study showed that the microporous coating augments nucleate boiling performance through increased latent heat transfer in the low heat flux region and through increased convection heat transfer in the high heat flux region. The critical heat flux for the microporous coated surface is significantly enhanced over the plain surface due to decreased latent heat transfer (decreased vapor generation rate) and/or increased hydrodynamic stability from increased vapor inertia; both of which are a direct result of increased nucleation site density.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/heattransfer/article-pdf/124/3/500/5912495/500_1.pdf

Reference28 articles.

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