Condensation of R-134a on enhanced tubes

W. Y. Cheng*, Chi-Chuan Wang

*Corresponding author for this work

Research output: Contribution to journalConference article

23 Scopus citations


Experiments were conducted to study the heat transfer characteristics of condensate on a vertical column of horizontal enhanced tubes. Three tubes arranged in a vertical column were set in stationary vapor. In the current experiment, six distinctly different enhanced tubes, including low-fin tubes of 26, 32, and 41 fins per inch (fpi) and three three-dimensional-fin tubes, were tested. In addition, a plain tube was also tested for comparison with Nusselt's theory. The working fluid used in the experiment is refrigerant R-134a. Average condensing heat transfer coefficients were obtained from the modified Wilson plot technique.

Original languageEnglish
Pages (from-to)809-817
Number of pages9
JournalASHRAE Transactions
Issue number2
StatePublished - 1 Dec 1994
EventProceedings of the ASHRAE Annual Meeting - Orlando, FL, USA
Duration: 25 Jun 199429 Jun 1994

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