A CUBIC EQUATION OF STATE BASED ON A SIMPLIFIED HARD-CORE MODEL |
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| Authors: | M Mohsen-Nia H Moddaress G Ali Mansoor |
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| Affiliation: |
a Chemical Engineering Department, Amirkabir University of Technology, Tehran, Iran |
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| Abstract: | The Redlich-Kwong (RK) equation of state introduced in 1949 has been considered the most accurate two-constant-parameter cubic equation of state. The other cubic equations which are more accurate than the RK equation contain either three, or more, parameters and/or their parameters are temperature- dependent. A New two-constant-parameter cubic equation of state, $ is introduced using a simplified molecular theory of hard-sphere fluids for its repulsive term. This two-constant-parameter cubic equation of state appreciably increases the accuracy of thermodynamic property predictions and phase equilibria of pure fluids and flluid mixtures over the equations of this category. |
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| Keywords: | Cubic equation of state Hard-sphere mixture Phase equilibria prediction Solubility prediction Density prediction |
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