Research Papers

Heat Transfer to Water in Thin Rectangular Channels

[+] Author and Article Information
S. Levy, R. O. Niemi

General Electric Company, Atomic Power Equipment Department, San Jose, Calif.

R. A. Fuller

General Electric Company, Knolls Atomic Power Laboratory, Schenectady, N. Y.

J. Heat Transfer 81(2), 129-140 (May 01, 1959) (12 pages) doi:10.1115/1.4008156 History: Received September 07, 1958; Published May 01, 1959; Online February 19, 2019


Heat-transfer coefficients are presented for water flowing vertically in thin rectangular channels (0.1 × 2.5 in.) 18 and 36 in. long and heated electrically around the entire periphery. The range of variables covered is: 65 to 200 psia pressure, 90 to 200 F sub-cooling, and 4 to 50 fps water velocity. Heat-transfer correlations are given for data along the narrow and wide faces of the rectangular test section. Burnout data also are reported with steam blanketing occurring first at the corner of the test section. The proposed correlating equation, valid at the narrow face of the test section, gives values considerably lower than those obtained in a circular pipe.

Copyright © 1959 by ASME
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