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Indexed by:期刊论文

Date of Publication:2004-07-01

Journal:INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER

Included Journals:Scopus、SCIE、EI

Volume:31

Issue:5

Page Number:619-627

ISSN No.:0735-1933

Abstract:The present paper reports an experimental investigation of film condensation in a vertical, internally finned tube with a wire insert. The finned tube and wire insert were chosen as the best performing from a series of tubes and inserts tested separately in previous investigations. Compared with previous results for the finned tube, it was found that only for DeltaT>10 K did the addition of the insert somewhat improve the heat transfer performance. However, the pressure drop for the finned tube with insert was increased. Empirical correlations for friction factors for the three tube configurations are proposed based on the present data. (C) 2004 Elsevier Science Ltd.