Abstract
A recently proposed extended Lee-Kesler corresponding-states method (ELK) for polar fluids which accurately predicts compressibility factors and departure functions is considered. Tables of polar deviation functions have been generated and values of the shape/size and polar parameters for 52 polar fluids have been calculated, allowing the method to be used for quick hand calculations in addition to the previous, more accurate, computer applications. Additionally, vapor pressures of 44 pure polar fluids were computed using the full version of the ELK and the equality of the Gibbs free energy criterion for phase equilibrium. An ELK vapor pressure correlation is proposed which is essentially numerically equivalent to, but computationally simpler than, the former method. Computed vapor pressures agree with experimental values as well or better than other vapor pressure equations designed exclusively for vapor pressure prediction of polar fluids.
Similar content being viewed by others
References
W. V. Wilding and R. L. Rowley, Int. J. Thermophys. 7:525 (1986).
B. I. Lee and M. G. Kesler, AIChE J. 21:510 (1975).
R. C. Reid, J. M. Prausnitz, and T. K. Sherwood, The Properties of Gases and Liquids, 3rd ed. (McGraw-Hill, New York, 1977), pp. 31–36, 50, 51, 96–112.
C. A. Passut and R. P. Danner, Chem. Eng. Prog. Symp. Ser. 140 70:30 (1974).
R. E. Thek and L. I. Stiel, AIChE J. 12:599 (1966); 13:626 (1967).
W. C. Reynolds, Thermodynamic Properties in SI (SUME, Stanford, Calif., 1979), p. 14.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Wilding, W.V., Johnson, J.K. & Rowley, R.L. Thermodynamic properties and vapor pressures of polar fluids from a four-parameter corresponding-states method. Int J Thermophys 8, 717–735 (1987). https://doi.org/10.1007/BF00500790
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00500790