Isothermal vapour-liquid equilibrium measurements for the (R1234ze(E) + ethane) system at temperatures from 272.27 to 347.52 K

International audienceIn this paper, new vapour-liquid equilibrium data of the (ethane + R1234ze(E)) binary system are presented. The measurements are performed at six isotherms ranging from 272.27 to 347.52 K and for pressures up to 4.89 MPa. The experiments were conducted by means of a "static-analytic" apparatus with phase analysis via gas chromatography, with resulting uncertainties of 0.03 K for temperature, 0.4 kPa for pressure and 0.0043 for vapour and liquid mole fractions. The experimental data were correlated with Peng-Robinson equation of state using the classical van der Waals mixing rules. For the three temperatures above the critical temperature of pure ethane, the critical compositions and pressures of the binary mixtures were also calculated based on the extended asymptotic behaviour laws. The results obtained show a good agreement between experimental measurements and modelling, with a maximal deviation of 1.13% for bubble pressures and 1.23% for vapour molar fractions