Film Condensation of HCFC-123 on In-Line Bundles of Horizontal Finned Tubes: Effect of Fin Geometry

Hiroshi Honda, Hiroshi Takamatsu, Kyoohee Kim, Yasuhiro Ishikawa, Nobuo Takada

Research output: Contribution to journalArticlepeer-review

Abstract

Theoretical and experimental studies were performed to investigate the effect of fin geometry on the condensation of HCFC-123 on a horizontal finned tube. Approximate expressions of the heat transfer coefficient for a newly proposed high-performance fin was developed. Experiments were conducted to obtain row-by-row heat transfer data during condensation of downward-flowing HCFC-123 vapor in in-line bundles of horizontal two-dimensional fin tubes. Two conventional low-fin tubes and two finned tubes with fin shapes close to the newly proposed ones were tested. The highest heat transfer performance, about 85% higher than the conventional 26-fpi tube, was obtained using one of the new tubes. Predictions of the previously developed theoretical model compared well with experimental data for all the tubes at a low vapor velocity and a low to medium condensate inundation rate.

Original languageEnglish
Pages (from-to)2103-2110
Number of pages8
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume60
Issue number574
DOIs
Publication statusPublished - 1994

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

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