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RESEARCH PAPERS: Boiling and Condensation

Flow Boiling in Horizontal Tubes: Part 3—Development of a New Heat Transfer Model Based on Flow Pattern

[+] Author and Article Information
N. Kattan, J. R. Thome, D. Favrat

Laboratory for Industrial Energy Systems, Department of Mechanical Engineering, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland

J. Heat Transfer 120(1), 156-165 (Feb 01, 1998) (10 pages) doi:10.1115/1.2830039 History: Received October 01, 1996; Revised July 16, 1997; Online January 07, 2008

Abstract

A new heat transfer model for intube flow boiling in horizontal plain tubes is proposed that incorporates the effects of local two-phase flow patterns, flow stratification, and partial dryout in annular flow. Significantly, the local peak in the heat transfer coefficient versus vapor quality can now be determined from the prediction of the location of onset of partial dryout in annular flow. The new method accurately predicts a large, new database of flow boiling data, and is particularly better than existing methods at high vapor qualities (x > 85 percent) and for stratified types of flows.

Copyright © 1998 by The American Society of Mechanical Engineers
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