A numerical investigation of louvered fin-and-tube heat exchangers having circular and oval tube configurations

Jin Sheng Leu, Min Sheng Liu, Jane Sunn Liaw, Chi-Chuan Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

86 Scopus citations

Abstract

A numerical investigation of the airside performance for fin-and-tube heat exchanger having circular and oval configuration is presented in this study. The geometrical parameters of louver angle, louver pitch, and louver length are examined. For a fixed louver length (6.25 mm) and louver angle (14°), a 10% decrease of heat transfer performance is observed and a 41% decrease of pressure drop is seen for oval tube configuration. The calculated results indicate that the pressure drops always with increase in louver angle. However, an optimal value of heat transfer performance is observed due to the difference in the development of thermal boundary layer on the upper and lower louver surface. Both the heat transfer and friction performance increase with louver length. However, the rate of the increase of heat transfer performance is about the same as the increase of pressure drops.

Original languageEnglish
Pages (from-to)4235-4243
Number of pages9
JournalInternational Journal of Heat and Mass Transfer
Volume44
Issue number22
DOIs
StatePublished - Nov 2001

Keywords

  • Fin-and-tube heat change exchanger
  • Louver fin
  • Oval tube

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