A New Flow Regimes Map for Condensation Inside Horizontal Tubes

[+] Author and Article Information
T. N. Tandon, H. K. Varma, C. P. Gupta

Mechanical and Industrial Engineering Department, University of Roorkee, Roorkee, U.P., India

J. Heat Transfer 104(4), 763-768 (Nov 01, 1982) (6 pages) doi:10.1115/1.3245197 History: Received October 26, 1981; Online October 20, 2009


The problem of predicting flow patterns during condensation inside horizontal tubes is discussed. Using the condensation flow pattern data of several investigators, a new flow regimes map with dimensionless gas velocity jg * as ordinate and (1-α)/α as abscissa, where α is the void fraction, is generated. Based on these data, a set of new criteria for the transition between different flow regimes is suggested. The proposed flow regimes map gives excellent agreement for annular, semiannular, and wavy flows which exist over a major part of the condensing length during condensation inside horizontal tubes.

Copyright © 1982 by ASME
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