An implicit type EOS-GE(VP) model employing vapor pressure standard state. II. Prediction of excess enthalpy using the EOS-GE model

In this paper, the EOS-GE models, combining the Soave-Redlich-Kwong equation of state with the NRTL equation, are examined for the prediction of liquid excess enthalpy. The implicit type EOS-GE(VP) model employing a new standard state which is the vapor pressure of the most volatile component at the temperature of the mixture gives satisfactory reproduction of the excess enthalpy of 11 binary systems at 101.3 kPa. These results are compared with those with the MHV2 and PSRK models which are of the explicit type. plicit type EOS-GE(VP) is also applied to predict high-pressure liquid excess enthalpy from the liquid excess enthalpy data at 101.3 kPa.