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RESEARCH PAPERS: Boiling and Condensation

Low-Velocity Subcooled Nucleate Flow Boiling at Various Orientations

[+] Author and Article Information
K. M. Kirk

Center for Naval Analyses, 4401 Ford Ave., Alexandria, VA 22302

H. Merte, R. Keller

Department of Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, MI 48109

J. Heat Transfer 117(2), 380-386 (May 01, 1995) (7 pages) doi:10.1115/1.2822533 History: Received October 01, 1993; Revised April 01, 1994; Online December 05, 2007

Abstract

Subcooled forced convection nucleate boiling experiments with R-113 were conducted at low velocities using both thin film semitransparent gold-on-quartz and gold-coated copper substrate flat heaters at various orientations. The experiments demonstrate that if buoyancy is significant relative to bulk liquid momentum, then a decrease in the buoyant force normal to and away from the heater surface enhances the heat transfer, with the effect being greatest at low values of heat flux. Furthermore, the effect of the bulk liquid velocity is shown to be dependent on the surface orientation.

Copyright © 1995 by The American Society of Mechanical Engineers
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