A semi-empirical correlation for the estimation of the second virial coefficients of refrigerants

2016 ◽  
Vol 68 ◽  
pp. 242-251 ◽  
Author(s):  
Giovanni Di Nicola ◽  
Gianluca Coccia ◽  
Mariano Pierantozzi ◽  
Matteo Falone
Keyword(s):  
Virial Coefficients ◽  
Empirical Correlation ◽  
Second Virial Coefficients ◽  
Semi Empirical

New semi-empirical rules for estimating cross second virial coefficients

1980 ◽  
Vol 45 (4) ◽  
pp. 1155-1158 ◽  
Author(s):  
Anatol Malijevský ◽  
Josef P. Novák
Keyword(s):  
Virial Coefficients ◽  
Corresponding States ◽  
Statistical Thermodynamic ◽  
Second Virial Coefficients ◽  
Semi Empirical ◽  
Thermodynamic Interpretation

By using the statistical-thermodynamic interpretation of the theorem of corresponding states, new rules have been derived for estimating cross second viral coefficients.

The Bender Equation of State and Virial Coefficients

2000 ◽  
Vol 65 (9) ◽  
pp. 1464-1470 ◽  
Author(s):  
Anatol Malijevský ◽  
Tomáš Hujo
Keyword(s):  
Equation Of State ◽  
Virial Coefficient ◽  
Virial Coefficients ◽  
Low Density ◽  
Second Virial Coefficients ◽  
The Third ◽  
Temperature Dependences ◽  
Experimental Values

The second and third virial coefficients calculated from the Bender equation of state (BEOS) are tested against experimental virial coefficient data. It is shown that the temperature dependences of the second and third virial coefficients as predicted by the BEOS are sufficiently accurate. We conclude that experimental second virial coefficients should be used to determine independently five of twenty constants of the Bender equation. This would improve the performance of the equation in a region of low-density gas, and also suppress correlations among the BEOS constants, which is even more important. The third virial coefficients cannot be used for the same purpose because of large uncertainties in their experimental values.

A Modified Semi-Empirical Correlation for Designing Two-Phase Separators

2021 ◽  
pp. 108782
Author(s):  
Mehdi Fadaei ◽  
M.J. Ameri ◽  
Y. Rafiei ◽  
Kayvan Ghorbanpour
Keyword(s):  
Empirical Correlation ◽  
Two Phase ◽  
Semi Empirical
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