Modeling the Thermally Governed Transient Flow Surges in Multitube Condensing Flow Systems With Thermal and Flow Distribution Asymmetry

[+] Author and Article Information
G. L. Wedekind, B. L. Bhatt

School of Engineering and Computer Science, Oakland University, Rochester, MI 48309

J. Heat Transfer 111(3), 786-791 (Aug 01, 1989) (6 pages) doi:10.1115/1.3250752 History: Received November 30, 1987; Revised July 01, 1988; Online October 20, 2009


In a tube-type condenser involving complete condensation, small changes in the inlet vapor flow rate momentarily cause very large transient surges in the outlet liquid flow rate. An equivalent single-tube model is proposed that predicts these transient flow surges for a multitube system. The model, based upon a system mean void fraction model developed earlier, includes the effects of thermal and flow distribution asymmetry associated with each individual condenser tube in the multitube system. Theoretical and experimental verification for a two-tube system is presented.

Copyright © 1989 by ASME
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