A Model to Predict Convective Subcooled Critical Heat Flux

[+] Author and Article Information
E. J. Thorgerson, D. H. Knoebel

Savannah River Laboratory, E. I. du Pont de Nemours and Co., Aiken, S. C.

J. H. Gibbons

College of Engineering, University of South Carolina, Columbia, S. C.

J. Heat Transfer 96(1), 79-82 (Feb 01, 1974) (4 pages) doi:10.1115/1.3450144 History: Received March 13, 1973; Online August 11, 2010


A friction factor correlation based on pressure drop measurements at burnout in an annular channel is presented. From Reynolds analogy and this correlation, critical heat fluxes were predicted within ±10 percent of the values measured with ideal geometry (no ribs), stainless steel heaters, and H2 O coolant flowing vertically downward at a velocity of 15 to 45 ft/sec and subcoolings greater than 25 deg C. Tubular critical heat fluxes are predicted within ±20 percent using the friction factor correlation and Reynolds analogy. A short theoretical discussion is presented.

Copyright © 1974 by ASME
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