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RESEARCH PAPERS: Evaporation and Boiling

Nucleation Site Density in Forced Convection Boiling

[+] Author and Article Information
L. Z. Zeng, J. F. Klausner

Department of Mechanical Engineering, University of Florida, Gainesville, FL 32611

J. Heat Transfer 115(1), 215-221 (Feb 01, 1993) (7 pages) doi:10.1115/1.2910651 History: Received March 01, 1992; Revised August 01, 1992; Online May 23, 2008

Abstract

Measurements of nucleation site density, n/A, have been obtained for forced convection boiling of refrigerant R113 in a horizontal 25 × 25 mm i.d. square transparent test section with a nichrome heating strip. It has been found that the behavior of the nucleation site density is significantly different from that found in pool boiling. The mean vapor velocity, heat flux, and system pressure appear to exert a strong parametric influence. It is demonstrated that although the nucleation site density is dependent on the critical cavity radius, rc , it is not sufficient for correlating n/A.

Copyright © 1993 by The American Society of Mechanical Engineers
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