PVTx properties of difluoromethane + pentafluoroethane (R-32 + 125) and difluoromethane + pentafluoroethane + 1,1,1,2-tetrafluoroethane (R-32 + 125 + 134a)

Hideaki Kiyoura, Jiro Takebe, Hirokatsu Uchida, Haruki Sato, Koichi Watanabe

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Abstract

The experimental pressure-volume-temperature-composition (PVTx) properties of a binary refrigerant, a system of difluoromethane (R-32) + pentafluoroethane (R-125), R-32 + 125, and a ternary refrigerant, a system of R-32, R-125, and 1,1,1,2-tetrafluoroethane (R-134a), R-32 + 125 + 134a, have been measured by a constant-volume method coupled with expansion procedures in an extensive range of temperatures, pressures, and densities. Ninety-four PVTx property data of the R-32 + 125 system were measured in a range of temperatures from (330 to 440) K, of pressures from (1.8 to 5.2) MPa, and of densities from (67 to 158) kg·m-3, of the compositions of 20.089 and 39.977 mass % R-32. One hundred and five PVTx property data of the R-32 + 125 + 134a system were measured in a range of temperatures from (315 to 440) K, of pressures from (1.6 to 5.7) MPa, and of densities from (67 to 166) kg·m-3, at compositions of (22.993/25.026/51.981), (23.075/25.112/51.813), (30.018/10.059/59.924), (29.996/29.971/40.033), (33.408/ 33.257/33.335) mass %.

Original languageEnglish
Pages (from-to)1409-1413
Number of pages5
JournalJournal of Chemical and Engineering Data
Volume41
Issue number6
Publication statusPublished - 1996 Nov

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norflurane
Refrigerants
Chemical analysis
Temperature
pentafluoroethane
difluoromethane

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  • Chemistry(all)

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PVTx properties of difluoromethane + pentafluoroethane (R-32 + 125) and difluoromethane + pentafluoroethane + 1,1,1,2-tetrafluoroethane (R-32 + 125 + 134a). / Kiyoura, Hideaki; Takebe, Jiro; Uchida, Hirokatsu; Sato, Haruki; Watanabe, Koichi.

In: Journal of Chemical and Engineering Data, Vol. 41, No. 6, 11.1996, p. 1409-1413.

Research output: Contribution to journalArticle

Kiyoura, Hideaki ; Takebe, Jiro ; Uchida, Hirokatsu ; Sato, Haruki ; Watanabe, Koichi. / PVTx properties of difluoromethane + pentafluoroethane (R-32 + 125) and difluoromethane + pentafluoroethane + 1,1,1,2-tetrafluoroethane (R-32 + 125 + 134a). In: Journal of Chemical and Engineering Data. 1996 ; Vol. 41, No. 6. pp. 1409-1413.
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