Two-phase pressure drop of refrigerants during flow boiling in small channels: An experimental investigation and correlation development

T. N. Tran, M. C. Chyu, M. W. Wambsganss, D. M. France

Research output: Contribution to journalArticle

249 Scopus citations

Abstract

Two-phase flow pressure drop measurements were made during a phase-change heat transfer process with three refrigerants (R-134a, R-12, and R-113) at six different pressures ranging from 138 to 856 kPa, and in two sizes of round tubes (2.46 and 2.92 mm inside diameters) and one rectangular channel (4.06 x 1.7 mm). The data were compared with those from large tubes under similar conditions, and state-of-the-art correlations were evaluated using the R-134a data. The state-of-the-art large-tube correlations failed to satisfactorily predict the experimental data. The data were used to develop a new correlation for two-phase pressure drop during flow boiling in small channels. The correlation was then tested against the experimental data for the three refrigerants; the error was ±20%. (C) 2000 Elsevier Science Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1739-1754
Number of pages16
JournalInternational Journal of Multiphase Flow
Volume26
Issue number11
DOIs
StatePublished - Nov 2000

Keywords

  • Correlations
  • Refrigerants
  • Small channels
  • Two-phase pressure drop

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