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RESEARCH PAPERS

Pool Boiling Heat Transfer in Narrow Horizontal Annular Crevices

[+] Author and Article Information
Ying-Huei Hung

Dept. of Power Mechanical Engineering, National Tsing Hua University, Taiwan, Republic of China

Shi-Chune Yao

Department of Mechanical Engineering, Carnegie-Mellon University, Pittsburgh, PA 15213

J. Heat Transfer 107(3), 656-662 (Aug 01, 1985) (7 pages) doi:10.1115/1.3247474 History: Received October 03, 1983; Online October 20, 2009

Abstract

Experimental results of the pool boiling in horizontal narrow annuli are reported. The effects of fluid properties, pool subcooling, crevice length, and gap size on the boiling behavior and the critical heat flux (CHF) are also studied. The CHF decreases with decreasing gap size or increasing length of the annuli. The lower CHF of narrow crevices may be explained by the thin film evaporation. A semi-empirical correlation is established for the CHF of pool boiling in horizontal confined spaces. This correlation is compared with the CHF data of the present experiment. Satisfactory agreement is obtained.

Copyright © 1985 by ASME
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