Liquid densities of alternative refrigerants blended with difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane

J. V. Widiatmo, T. Fujimine, H. Sato, K. Watanabe

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Measurements of the bubble-point pressures and the saturated-liquid densities of the binary mixtures difluoromethane + 1,1,1,2-tetrafluoroethane (R-32 + R-134a) and pentafluoroethane + 1,1,1,2-tetrafluoroethane (R-125 + R-134a) and the ternary mixture difluoromethane + pentafluoroethane + 1,1,1,2-tetrafluoroethane (R-32 + R-125 + R-134a) are presented. The estimated uncertainties of ±15 mK in temperature, ±12 kPa in pressure, ±0.2% in density, and ±0.3 mol % in composition are reported. The Peng-Robinson equation and the modified Hankinson-Brobst-Thomson equation have been optimized to represent the measured properties satisfactorily. The calculated temperature glides of the mixtures of the present interest have also been presented.

Original languageEnglish
Pages (from-to)270-277
Number of pages8
JournalJournal of Chemical and Engineering Data
Issue number2
Publication statusPublished - 1997 Jan 1


ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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