Subcooled Pool Boiling Critical Heat Flux in Dielectric Liquid Mixtures

[+] Author and Article Information
T. Y. Tom Lee, Mali Mahalingam

Advanced Packaging Development Center, Motorola, Inc., Phoenix, Ariz 85008

Peter J. C. Normington

Thermal Management, Inc., Phoenix, Ariz 85017

J. Electron. Packag 115(1), 134-137 (Mar 01, 1993) (4 pages) doi:10.1115/1.2909294 History: Received August 21, 1992; Revised December 17, 1992; Online April 28, 2008


The beneficial effect of using dielectric liquid mixture in reducing temperature overshoot in pool boiling has been studied by the authors (Normington et al., 1992). The current experimental work addresses the influence of mixtures of dielectric liquids on the critical heat flux (CHF) in pool boiling. Two families of dielectric liquids were evaluated: perfluorocarbon liquids and perfluoropolyether liquids. Each set of the family consisted of two liquids with boiling points ranging from 80°C−110°C. Both 100 percent of each liquid and mixtures of two liquids were tested. Video filming was used along with electronic data collection. The perfluoropolyether liquids showed an increase in CHF as more high boiling liquid was added to the mixture, while the perfluorocarbon liquids had a constant CHF for all mixtures.

Copyright © 1993 by The American Society of Mechanical Engineers
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