RESEARCH PAPERS: Boiling and Condensation

Effect of Channel Blockage on Critical Heat Flux for a Horizontal Cylinder in Crossflow

[+] Author and Article Information
R. Dowlati

School of Nuclear Engineering, Purdue University, West Lafayette, IN 47907

M. Kawaji, I. D. Sardjono

Dept. of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Canada

S. T. Revankar

School of Nuclear Engineering, Purdue University, West Lafayette, IN 47909

J. Heat Transfer 117(4), 998-1002 (Nov 01, 1995) (5 pages) doi:10.1115/1.2836322 History: Received October 01, 1994; Revised July 01, 1995; Online January 23, 2008


An experimental investigation has been conducted on critical heat flux (CHF) on a horizontal tube in crossflow boiling R-113 at near atmospheric pressures. Data were obtained over a range of fluid velocities (up to 0.52 m/s), heater diameters (8 to 12.7 mm), and flow blockage factors (D/H = 0.31 to 0.5). The effect of the flow blockage on CHF was examined in detail and compared with other data and existing correlations. No significant effect of flow blockage was observed for D/H up to 0.5. An analytical modification of the Katto-Haramura CHF correlation is proposed to take into account the effect of flow blockage over a wide range of D/H.

Copyright © 1995 by The American Society of Mechanical Engineers
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