Vapor-liquid equilibrium data for the dimethyl ether (RE170) + decafluorobutane (R3-1-10) system at temperatures from 313.28 to 392.83 K and pressures up to 4.9 MPa

Alain Valtz (1) , Christophe Coquelet (1)

1 CEP/Fontainebleau

Isothermal vapour-liquid equilibrium data have been measured for the RE170 + R3-1-10 binary system at nine temperatures between 313.28 and 392.83 K, and pressures between 0.57 and 4.9 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 accuracies within ±0.02 K, ±0.0006 MPa and ±0.009 for molar compositions. The particularity of this system is to present an azeotrope. The isothermal 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.

Mots clés: VLE data; High-pressures; Organic Rankine cycle Modelling; Mixture critical point; Perfluorobutane (R3-1-10); Dimethyl ether (RE170)

Domaines: Génie des procédés

Alain Valtz, Christophe Coquelet. Vapor-liquid equilibrium data for the dimethyl ether (RE170) + decafluorobutane (R3-1-10) system at temperatures from 313.28 to 392.83 K and pressures up to 4.9 MPa. Fluid Phase Equilibria, 2011, 316 (25), pp.141-146. ⟨10.1016/j.fluid.2011.11.026⟩. ⟨hal-00660570⟩