RESEARCH PAPERS: Boiling Heat Transfer

Effects of Dissolved Gas Content on Pool Boiling of a Highly Wetting Fluid

[+] Author and Article Information
S. M. You, Y. S. Hong

Department of Mechanical Engineering, University of Texas—Arlington, Arlington, TX 76019

T. W. Simon, A. Bar-Cohen

Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455

J. Heat Transfer 117(3), 687-692 (Aug 01, 1995) (6 pages) doi:10.1115/1.2822631 History: Received March 01, 1994; Revised November 01, 1994; Online December 05, 2007


Experimental results on pool boiling heat transfer from a horizontal cylinder in an electronic cooling fluid (FC-72) are presented. The effects on the boiling curve of having air dissolved in the fluid are documented, showing that fluid in the vicinity of the heating element is apparently liberated of dissolved gas during boiling. Dissolved gas was found to influence boiling incipience only with high gas concentrations (>0.005 moles/mole). For low-to-moderate concentrations, a larger superheat is required to initiate boiling and a hysteresis is observed between boiling curves taken with increasing and decreasing heat flux steps. Boiling, a very effective mode of heat transfer, is attractive for electronics cooling. The present experiment provides further documentation of the role of dissolved gas on the incipience process and shows similarities with subcooled boiling of a gas-free fluid.

Copyright © 1995 by The American Society of Mechanical Engineers
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