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RESEARCH PAPERS

Temperature Uniformity Across the Surface in Transition Boiling

[+] Author and Article Information
Y. Haramura

Department of Mechanical Engineering, Kanagawa University, Yokohama 221, Japan

J. Heat Transfer 113(4), 980-984 (Nov 01, 1991) (5 pages) doi:10.1115/1.2911231 History: Received August 07, 1990; Revised March 13, 1991; Online May 23, 2008

Abstract

The condition under which temperature is kept uniform across the surface in transition boiling is investigated theoretically and numerically. Analysis of three-dimensional heat conduction indicates that an unstable mode emerges depending on the gradient of a boiling curve and dimension and properties of a heater block in steady-state runs. A thinner heated block for the same diameter or larger diameter for the same thickness loses uniformity for a shallower boiling curve in transition boiling. Simulation of a transient run and another analysis indicates that the surface is always kept sufficiently uniform in transient runs without control of heat input. The analysis also reveals the rapid change in the surface temperature in transient runs.

Copyright © 1991 by The American Society of Mechanical Engineers
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