Comparative Study of Equations of State

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Date
2012-02
Authors
Abdul-Aziz, S. A.
Rabah, A. A.
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Publisher
UOFK
Abstract
The objective of this work is to predict thermodynamic properties of pure component using equation of state (EOS). Six EOSs used in this study, namely Soave-Redlich-Kwong (SRK), Peng-Robinson (PR), Schmidt-Wenzel (SW), Patel-Teja (PT), Lawal-Lake-Silberberg (LLS), and Adachi-Lu-Sugie (ALS). The pure component used include eleven hydrocarbon compounds from methane to normal decane and four non-hydrocarbon compounds namely water, hydrogen sulphide, nitrogen, and carbon dioxide. The predicted properties include vapour pressure, saturated vapour and liquid volumes, in temperature range from triple to critical point. A computer code using MATLAB software is written to facilitate the calculation. The predicted resulted is compared with experimental data. The results revealed with exception SW EOSs all EOSs are inconsistent in the prediction of thermodynamics properties of the fluids under consideration. SW predicted all properties with absolute average percent deviation (AAPD) of less than 3.
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Keywords
Equation of state; saturated properties
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