Local and Average Heat Transfer and Pressure Drop for Refrigerants Evaporating in Horizontal Tubes

[+] Author and Article Information
M. Altman

Missile and Space Vehicle Department, General Electric Company, Philadelphia, Pa.

R. H. Norris, F. W. Staub

General Engineering Laboratory, General Electric Company, Schenectady, N. Y.

J. Heat Transfer 82(3), 189-196 (Aug 01, 1960) (8 pages) doi:10.1115/1.3679906 History: Received September 28, 1959


A test facility is described that has been constructed to investigate local heat transfer and pressure drop for evaporating or condensing refrigerants. The empirical method of B. Pierre [1] for correlating the average heat-transfer coefficients of refrigerants evaporating in horizontal tubes is presented in conjunction with the data of several authors [3–6]. Data on local heat-transfer coefficients and pressure drop are presented for Refrigerant-22 evaporating in two 4-ft-long, 0.343-in-ID straight horizontal tubes, and are correlated by a refinement of the curve proposed in [1]. The procedure of Martinelli-Nelson [9] correlated the data for local pressure drop within 15 per cent.

Copyright © 1960 by ASME
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