Film Condensation of R-113 on Staggered Bundles of Horizontal Finned Tubes

[+] Author and Article Information
H. Honda

Institute of Advanced Material Study, Kyushu University, Kasuga, Fukuoka 816, Japan

B. Uchima

Kagawa Technical College, Marugame, Kagawa 763, Japan

S. Nozu, E. Torigoe, S. Imai

Department of Mechanical Engineering, Okayama University, Tsushima, Okayama 700, Japan

J. Heat Transfer 114(2), 442-449 (May 01, 1992) (8 pages) doi:10.1115/1.2911293 History: Received March 01, 1991; Revised October 01, 1991; Online May 23, 2008


Film condensation of R-113 on staggered bundles of horizontal finned tubes with vertical vapor downflow was experimentally investigated. Two tubes with flat-sided annular fins and four tubes with three-dimensional fins were tested. The condensate flow and heat transfer characteristics were compared with the previous results for in-line bundles of the same test tubes and a staggered bundle of smooth tubes. The decrease in heat transfer due to condensate inundation was most significant for the in-line bundles of the three-dimensional fin tubes, whereas the decrease was very slow for both the staggered and in-line bundles of the flat-sided fin tubes. The predictions of the previous theoretical model for a bundle of flat-sided fin tubes agreed fairly well with the measured data at a low vapor velocity. The highest heat transfer performance was provided by the staggered bundle of flat-sided fin tubes with fin dimensions close to the theoretically determined optimum values.

Copyright © 1992 by The American Society of Mechanical Engineers
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