Air side heat transfer coefficients of discrete plate finned-tube heat exchangers with large fin pitch

Jong Min Choi, Yonghan Kim, Mooyeon Lee, Yongchan Kim

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

The objective of this study is to investigate the heat transfer characteristics of discrete plate finned-tube heat exchangers with large fin pitches. Thirty-four heat exchangers were tested with variations of fin pitches, the number of tube rows, fin alignment, and vertical fin space. The j-factor of the discrete plate finned-tube exchanger was analyzed as a function of coil geometry and then compared with that of the continuous plate finned-tube heat exchanger. For fin pitches of 7.5-15 mm, the j-factors of the discrete plate finned-tube heat exchangers were 6.0-11.6% higher than those of the continuous plate finned-tube heat exchangers. Two separate correlations for the j-factor were developed for the inline and the staggered fin alignment in the discrete plate finned-tube heat exchangers to predict the measured data within a relative deviation of 2.9%.

Original languageEnglish
Pages (from-to)174-180
Number of pages7
JournalApplied Thermal Engineering
Volume30
Issue number2-3
DOIs
Publication statusPublished - 2010 Feb

Keywords

  • Discrete fin
  • Fin alignment
  • Large fin pitch
  • Plate heat exchangers

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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