Inversion Curve of Joule-Thomson Using the Peng-Robinson Cubic Equation of State
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The Peng–Robinson cubic equation of state (CEOS) is used to calculate the inversion curve of the Joule–Thomson effect for any fluid. The alpha function is calculated using a generalized expression [2]. You can vary the acentric factor to see changes in the inversion curve.
Contributed by: Manuel G. Cerpa (April 2011)
Open content licensed under CC BY-NC-SA
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References
[1] D. Y. Peng and D. B. Robinson. "A New Two-Constant Equation of State," Industrial and Engineering Chemistry Fundamentals, 15(1), 1976 pp. 59–64.
[2] K. A. M. Gasem, W. Gao, Z. Pan, and R. L. Robinson, "A Modified Temperature Dependence for the Peng–Robinson Equation of State," Fluid Phase Equilibria, 181(1–2), 2001 pp. 113–125.
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