Vapor-liquid equilibria for the binary difluoromethane (R-32) + propane (R-290) mixture

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12 Citations (Scopus)

Abstract

The vapor-liquid equilibrium of the mixture composed of difluoromethane (R-32) and propane (R-290) was studied in the temperature range between 273.15 and 313.15 K. The experimental uncertainties of temperature, pressure, and composition measurements were estimated to be within ± 10 mK, ± 3 kPa, and ± 0.4 mol%, respectively. Comparisons between the present data and available experimental data were made using the Helmholtz free energy mixture model (HMM) adopted in the thermophysical properties program package, REFPROP 6.0, as a baseline. In addition, the existence of an azeotrope and the determination of new adjustable parameters for HMM for the R-32 + R-290 mixture are discussed.

Original languageEnglish
Pages (from-to)507-518
Number of pages12
JournalInternational Journal of Thermophysics
Volume20
Issue number2
DOIs
Publication statusPublished - Jan 1 1999
Externally publishedYes

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liquid-vapor equilibrium
propane
azeotropes
thermophysical properties
pressure measurement
temperature measurement
free energy
temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Vapor-liquid equilibria for the binary difluoromethane (R-32) + propane (R-290) mixture. / Higashi, Y.

In: International Journal of Thermophysics, Vol. 20, No. 2, 01.01.1999, p. 507-518.

Research output: Contribution to journalArticle

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