Airside performance of staggered tube bundle having shallow tube rows

Chi-Chuan Wang*, Wei Song Lee, Wen Jenn Sheu

*Corresponding author for this work

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Airside performance for tube bank having N=1 ∼ 6 are reported in this study. Test results indicated that the heat transfer coefficients for N = 1 and N = 2 are comparable and the heat transfer coefficients increase with the number of tube row. For the same P1, Pl, the heat transfer coefficients for the tube bank containing smaller diameter tube are higher than those of larger tube diameter for N ≥ 2 and is comparable for N = 1. Comparisons of the heat transfer performance were made with several correlations. It is found that the Gnielinski correlation gives the best predictive ability. For multiple-row heat exchangers, the predictive ability of the well-known Z̄ukauskas correlation is also good. But the correlation under-estimate the present 1-row heat exchangers. As a consequence, a slight modification to the Z̄ukauskas correlation is proposed that can extend its applicability in N = 1 and ReD < 1000. In addition, modification to the frictional performance of Z̄ukauskas correlation is also made. The mean deviation of the proposed frictional correlation is 11.2%.

Original languageEnglish
Pages (from-to)129-147
Number of pages19
JournalChemical Engineering Communications
Volume187
DOIs
StatePublished - 1 Jan 2001

Keywords

  • Heat transfer
  • Pressure drop
  • Staggered
  • Tube bundle

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