Page 378 - Handbook of Thermodynamic Diagrams 3 : Organic Compounds C8 to C28
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Appendix B
Peng-Robinson Equation of State for Thermodynamic Properties
Equation of State
Volume
Compressibility Factor
3 2 2 2 3
Z - (1 - B)Z + (A - 3B - 2B)Z - (AB - B - B ) =0
Fuqacity Coefficient
(4)
Residual Enthalpy
Residual Entropy
Parameters
a = a ca (7)
a c = 0.45724R2T2c/ (8)
b = 0.01180RT C/P C
1/2 2
a = [1 + m(l - T r )] (10)
2
m = 0.37464 + 1.54226Q - 0.26992Q (original PR) (11)
m = see Stryjek , Vera (modified PR) (12)
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