Modified Vapor Pressure Model Based on Corresponding-States Principle for Pure and Mixed Refrigerants

2017 ◽  
Vol 50 (11) ◽  
pp. 807-814
Author(s):  
Yanjun Sun ◽  
Xiaopo Wang ◽  
Liwen Jin ◽  
Zhigang Liu
Keyword(s):  
Vapor Pressure ◽  
Corresponding States ◽  
Model Based ◽  
Corresponding States Principle

scholarly journals Acentric factor estimation from the corresponding states principle

2006 ◽  
Vol 71 (3) ◽  
pp. 213-221 ◽  
Author(s):  
Dusan Grozdanic
Keyword(s):  
Vapor Pressure ◽  
Corresponding States ◽  
Acentric Factor ◽  
Pressure Equation ◽  
Estimation Procedures ◽  
Vapor Pressure Equation ◽  
Analytical Expressions ◽  
Corresponding States Principle ◽  
Factor Estimation

Acentric factor estimation from the corresponding states principle was conducted. The reported values, or analytical expressions, of the functions f(0), f(1) and f(2) are presented. The tabulated values of f(0), f(1) and f(2) by the Brandani relation of the Wagner type of vapor pressure equation are correlated. The estimation procedures are tested on 44 nonpolar substances. The Ambrose and Walton expressions have the best predictive characteristics.

Vapor pressure of liquid argon, krypton, and xenon

1969 ◽  
Vol 47 (3) ◽  
pp. 267-273 ◽  
Author(s):  
D. H. Bowman ◽  
Ronald A. Aziz ◽  
C. C. Lim
Keyword(s):  
Experimental Data ◽  
Regression Analysis ◽  
Critical Temperature ◽  
Vapor Pressure ◽  
Liquid Argon ◽  
Quantum Corrections ◽  
Functional Relations ◽  
Potential Parameters ◽  
Corresponding States Principle ◽  
Pressure Analysis

The vapor pressure of liquid argon, krypton, and xenon was measured from below the normal boiling temperature to close to the critical temperature. Functional relations were fitted by a multiple regression analysis to the experimental data. Data of other authors are compared directly with the results presented here.Comparison of the vapor pressure curves for the three liquids showed that the classical corresponding states principle was obeyed only poorly and that it was necessary to include quantum corrections in comparing the reduced curves. The adjusted reduction factors agreed reasonably well with those found from vapor pressure analysis by other workers. De Boer plots on the basis of our potential parameters are more linear than those using the parameters of Boato and Casanova.

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