The Excess Enthalpy of (Steam+Ethane) in the Supercritical Region up to T=699.4 K and p=25.3 MPa

Flow calorimetric measurements of the excess molar enthalpy HE m of (0.5H2O +0.5C2H6) in the supercritical region carried out at temperatures from 573.7 to 699.4 K and at pressures in the range 5.05 to 25.3 MPa are reported. The measurements are fitted by a two-reference-fluid corresponding-states model which gives a good representation of the excess enthalpies up to the highest pressure.