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RESEARCH PAPERS: Boiling Heat Transfer

Subcooled Flow Film Boiling Across a Horizontal Cylinder: Part II—Comparison to Experimental Data

[+] Author and Article Information
X. S. Chou, S. Sankaran, L. C. Witte

Heat Transfer and Phase Change Laboratory, Department of Mechanical Engineering, University of Houston, Houston, TX 77204-4792

J. Heat Transfer 117(1), 175-178 (Feb 01, 1995) (4 pages) doi:10.1115/1.2822299 History: Received September 01, 1993; Revised April 01, 1994; Online December 05, 2007

Abstract

In this paper, the results of a rigorous heat transfer analysis of subcooled flow film boiling over a heated cylinder are compared to experimental data. The analysis includes both the influence of the front part of the heater and the wake region behind the heater. Experiments using Freon-113 were conducted at subcooling levels up to 58°C and at velocities up to 3.81 m/s. The configuration was upflowing Freon-113 in crossflow over a 0.635-cm electric heater. A comparison of these data as well as other available experimental data to the analysis of Chou and Witte showed good agreement as long as the subcooling level of the liquid was substantial—that is, for liquid Jakob numbers above about 0.04. This represents a considerable improvement over other models that have been developed to predict subcooled flow boiling heat transfer. A method using a temperature correction to a constant-property heat transfer solution that corresponds to the full variable-property solution is also presented, and applied to water and Freon-113.

Copyright © 1995 by The American Society of Mechanical Engineers
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