Vapor–liquid equilibrium data for the difluoromethane (R32)–dimethyl ether (RE170) system at temperatures from 283.03 to 363.21 K and pressures up to 5.5 MPa

Isothermal vapour–liquid equilibrium data have been measured for the R32 + RE170 binary system at seven temperatures between 283.03 and 363.21 K, and pressures between 0.5 and 5.5 MPa. The experimental method used in this work is of the static-analytic type, taking advantage of two pneumatic capillary samplers (Rolsi™, Armines’ patent) developed in the CEP/TEP laboratory. The data were obtained with uncertainties within ±0.02 K, ±0.0002 MPa and ±1% for molar compositions. othermal P, x, y data are well represented with the Peng and Robinson equation of state using the Mathias–Copeman alpha function and the Wong–Sandler mixing rules involving the NRTL gE model.