Vapour-liquid equilibrium data for the 1,1,1,2 tetrafluoroethane (R134a) + dimethyl ether (DME) system at temperatures from 293.18 to 358.15 K and pressures up to about 3 Mpa. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Fluid Phase Equilibria Année : 2005

Vapour-liquid equilibrium data for the 1,1,1,2 tetrafluoroethane (R134a) + dimethyl ether (DME) system at temperatures from 293.18 to 358.15 K and pressures up to about 3 Mpa.

Alain Valtz
  • Fonction : Auteur
Leila Gicquel
Christophe Coquelet
Dominique Richon
  • Fonction : Auteur
  • PersonId : 915941

Résumé

Isothermal vapour–liquid equilibrium data have been measured for the binary system R134a + DME at five temperatures between 293.18 and 358.15 K, and pressures between 0.4899 and 2.9442 MPa. The peculiarity of this system is the existence of an azeotrope with a minimum pressure, which disappears at 358.15 K. 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 CENERG/TEP Laboratory. The data were obtained with uncertainties within ±0.02 K, ±0.0001 MPa and ±1% for molar compositions. The isothermal P, x, y data are well represented with the Redlich and Kwong equation of state using the Mathias–Copeman alpha function and the Huron–Vidal mixing rules involving the NRTL model.

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Dates et versions

hal-00018197 , version 1 (30-01-2006)

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  • HAL Id : hal-00018197 , version 1

Citer

Alain Valtz, Leila Gicquel, Christophe Coquelet, Dominique Richon. Vapour-liquid equilibrium data for the 1,1,1,2 tetrafluoroethane (R134a) + dimethyl ether (DME) system at temperatures from 293.18 to 358.15 K and pressures up to about 3 Mpa.. Fluid Phase Equilibria, 2005, 230 (1-2), p. 184-191. ⟨hal-00018197⟩
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