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RESEARCH PAPERS: Boiling and Condensation

Heat Transfer Behavior on Small Horizontal Heaters During Pool Boiling of FC-72

[+] Author and Article Information
T. D. Rule

School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99163-3920

J. Kim

Department of Mechanical Engineering, University of Maryland, College Park, MD 20742

J. Heat Transfer 121(2), 386-393 (May 01, 1999) (8 pages) doi:10.1115/1.2825991 History: Received September 08, 1997; Revised February 01, 1999; Online December 05, 2007

Abstract

Detailed local measurements of wall heat flux during saturated pool boiling of FC-72 on a small heated area without sidewalls were made using an array of 96 temperature-controlled heaters. Data were obtained in the nucleate boiling, critical heat flux, and transition boiling regimes. The space and time resolved data were used to conditionally sample the heat flux according to whether or not boiling occurred on the surface, enabling the separation of the heat flux due to boiling from that due to natural convection or vapor contact. The heat transfer from the edge heaters was observed to be much higher than that for the inner heaters above the critical temperature. The heat transfer during liquid contact in transition boiling was constant for a given wall superheat for the inner heaters, and was observed to decrease with increasing wall superheat.

Copyright © 1999 by The American Society of Mechanical Engineers
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