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Predictions of the Joule−Thomson Inversion Curve for the n-Alkane Series and Carbon Dioxide from the Soft-SAFT Equation of State

“…Even the most carefully developed EOSs may fail to generate physically correct inversion curves when extrapolated to such extreme conditions. In fact, several authors − have used the prediction of JTICs as a criterion to assess and rank the predictive capabilities of available EOSs, by comparing computed inversion curves against experimental data and empirical correlations available for simple fluids. , More recently, generalized correlations have also been developed for nonsimple fluids , based on the Lee−Kesler (LK) and Boublík−Alder−Chen−Kreglewski (BACK) EOSs.…”

“…Since a correlation of molecular parameters for any member of the series is available, the accuracy of this and other correlations will be checked by comparing the Soft-SAFT predicted JTICs with available experimental data and with inversion curves obtained from the BACK and the LK models. The accuracy and reliability of these two EOSs as sources of pseudoexperimental inversion data has been the subject of more detailed analysis and verification elsewhere. , Neither model is, however, applicable to heavy n -alkanes. The LK EOS is a three-parameter corresponding states EOS that extends beyond n -octane only as an extrapolation.…”