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A new two-parameter cubic equation of state for predicting phase behavior of pure compounds and mixtures
, Article Fluid Phase Equilibria ; Volume 242, Issue 1 , 2006 , Pages 19-28 ; 03783812 (ISSN) ; Pazuki, G. R ; Taghikhani, V ; Ghotbi, C ; Sharif University of Technology
2006
Abstract
In this work, a new two-parameter cubic equation of state is presented based on perturbation theory for predicting phase behavior of pure compounds and of hydrocarbons and non-hydrocarbons. The parameters of the new cubic equation of state are obtained as functions of reduced temperature and acentric factor. The average deviations of the predicted vapor pressure, liquid density and vapor volume for 40 pure compounds are 1.116, 5.696 and 3.083%, respectively. Also the enthalpy and entropy of vaporization are calculated by using the new equation of state. The average deviations of the predicted enthalpy and entropy of vaporization are 2.393 and 2.358%, respectively. The capability of the...