Vapor-liquid equilibrium data for the sulfur dioxide (SO2) plus difluoromethane (R32) system at temperatures from 288.07 to 403.16K and at pressures up to 7.31 MPa

被引：19
作者：
Valtz, A [1 ]
Coquelet, C [1 ]
Richon, D [1 ]
机构：
[1] Ecole Natl Super Mines Paris CENERG TEP, Ctr Energet, F-77305 Fontainebleau, France
来源：
INTERNATIONAL JOURNAL OF THERMOPHYSICS | 2004年 / 25卷 / 06期
关键词：
critical point; difluoromethane; high pressures; modeling; refrigerants; sulfur dioxide; supercritical gas solubility; VLE data;
D O I：
10.1007/s10765-004-7730-9
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Isothermal vapor - liquid equilibrium data have been measured for the binary system R32 (difluoromethane)+ SO2 at eight temperatures between 288.07 and 403.16 K, and at pressures in the range 0.417 - 7.31MPa. The experimental method used in this work is of the static - analytic type, taking advantage of two pneumatic capillary samplers (Rolsi(TM), Armines' patent) developed in the CENERG/TEP laboratory. The data were measured with uncertainties within +/- 0.02K and +/- 0.0015 MPa, respectively, for temperatures and pressures and +/- 1% for molar compositions as a result of careful calibrations. The isothermal P, x, y data are well represented with the Peng-Robinson equation of state using the Mathias-Copeman alpha function and the Wong-Sandler mixing rules involving the NRTL model.
引用
收藏
页码：1695 / 1711
页数：17
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