论文信息 - Bubble pressures and saturated liquid molar volumes of trichlorofluoromethane—chlorodifluoromethane mixtures. Representation of refrigerant-mixtures vapor—liquid equilibrium data by a modified form of the Peng—Robinson equation of state

Bubble pressures and saturated liquid molar volumes of trichlorofluoromethane—chlorodifluoromethane mixtures. Representation of refrigerant-mixtures vapor—liquid equilibrium data by a modified form of the Peng—Robinson equation of state

Abstract Experimental vapor—liquid equilibrium data and saturated liquid molar volumes of chlorodifluoromethane—trichlorofluoromethane binary mixtures have been obtained at four temperatures (298.15, 323.15, 348.15 and 373.15 K) using apparatus described previously. The experimental vapor—liquid equilibria are represented well by a modified form of the Peng—Robinson equation of state with one interaction parameter, but the mean deviation between the calculated and experimental densities is 5%. Vapor—liquid data for binary refrigerant mixtures from the literature are treated using the modified form of the Peng—Robinson equation of state with one adjusted interaction parameter in the mixing rule for a . The representation is fair and is not improved by introducing an additional parameter in the mixing rule for b .

[1] D. Richon,et al. Bubble pressures and liquid molar volumes of the system chlorotrifluoromethane-1,1,2-trichlorotrifluoroethane , 1982 .

[2] F. P. Stein,et al. Vapor-liquid equilibiriums of the trifluoromethane-trifluorochloromethane system , 1971 .

[3] M. Huron,et al. New mixing rules in simple equations of state for representing vapour-liquid equilibria of strongly non-ideal mixtures☆ , 1979 .

[4] Refrigerating. ASHRAE handbook and product directory /published by the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc , 1977 .

[5] J. Vidal,et al. Calculation of thermodynamic properties and vapor-liquid equilibria of refrigerants , 1978 .

[6] B. Eiseman. THE AZEOTROPE OF MONOCHLORODIFLUOROMETHANE AND DICHLORODIFLUOROMETHANE , 1957 .

[7] A. Fredenslund,et al. Vapor-liquid equilibriums in the Freon 12-Freon 13 system , 1976 .

[8] D. Peng,et al. A New Two-Constant Equation of State , 1976 .

[9] R. Reid,et al. The Properties of Gases and Liquids , 1977 .

[10] D. Richon,et al. New variable volume cell for determining vapor-liquid equilibriums and saturated liquid molar volumes by the static method , 1981 .

[11] A. F. Benning,et al. Thermodynamic Properties of Fluorochloromethanes and -Ethanes , 1940 .

[12] F. P. Stein,et al. An experimental and correlative study of the vapor-liquid equilibria of the tetrafluoromethane-chlorotrifluoromethane system , 1981 .