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

Journal Article · Fri Feb 28 23:00:00 EST 1997 · Journal of Chemical and Engineering Data

DOI:https://doi.org/10.1021/je9602327· OSTI ID:460724

Widiatmo, J V; Fujimine, T; Sato, H; Watanabe, K ^[1]

---

1. Keio Univ., Yokohama (Japan)

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.

• OSTI ID: 460724
• Journal Information: Journal of Chemical and Engineering Data, Journal Name: Journal of Chemical and Engineering Data Journal Issue: 2 Vol. 42; ISSN 0021-9568; ISSN JCEAAX
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
40 CHEMISTRY
CHLOROFLUOROCARBONS
DENSITY
EQUATIONS OF STATE
EXPERIMENTAL DATA
MATERIAL SUBSTITUTION
MIXTURES
REFRIGERANTS
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE