RESEARCH PAPERS: Boiling Heat Transfer

Heat Transfer During Liquid Contact on Superheated Surfaces

[+] Author and Article Information
J. C. Chen, K. K. Hsu

Institute of Thermo-Fluid Engineering & Science, Lehigh University, Bethlehem, PA 18015

J. Heat Transfer 117(3), 693-697 (Aug 01, 1995) (5 pages) doi:10.1115/1.2822632 History: Received February 01, 1993; Revised August 01, 1994; Online December 05, 2007


Several boiling regimes are characterized by intermittent contacts of vapor and liquid at the superheated wall surface. A microthermocouple probe was developed capable of detecting transient surface temperatures with a response time better than 1 ms. The transient temperature data were utilized to determine the time-varying heat flux under liquid contacts. The instantaneous surface heat flux was found to vary by orders of magnitude during the milliseconds of liquid residence at the hot surface. The average heat flux during liquid contact was found to range from 105 to 107 W/m2 for water at atmospheric pressure, as wall superheat was varied from 50 to 450°C.

Copyright © 1995 by The American Society of Mechanical Engineers
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