Phase equilibria in the system nitrogen–ethane and their prediction using cubic equations of state with different types of mixing rules

2004 ◽  
Vol 222-223 ◽  
pp. 3-9 ◽  
Author(s):  
Gabriele Raabe ◽  
Jürgen Köhler
Keyword(s):  
Phase Equilibria ◽  
Equations Of State ◽  
Mixing Rules ◽  
Different Types

Properties of Refrigerants from Cubic Equations of State

2008 ◽  
Vol 59 (5) ◽  
Author(s):  
Viorel Feroiu ◽  
Dan Geana ◽  
Catinca Secuianu
Keyword(s):  
Experimental Data ◽  
Vapor Pressure ◽  
Equations Of State ◽  
Ternary Mixtures ◽  
Volumetric Properties ◽  
Mixing Rules ◽  
Saturation Curve ◽  
Equilibrium Thermodynamic ◽  
Liquid Equilibrium ◽  
Binary And Ternary Mixtures

Vapour � liquid equilibrium, thermodynamic and volumetric properties were predicted for three pure hydrofluorocarbons: difluoromethane (R32), pentafluoroethane (R125) and 1,1,1,2 � tetrafluoroethane (R134a) as well as for binary and ternary mixtures of these refrigerants. Three cubic equations of state GEOS3C, SRK (Soave � Redlich � Kwong) and PR (Peng � Robinson) were used. A wide comparison with literature experimental data was made. For the refrigerant mixtures, classical van der Waals mixing rules without interaction parameters were used. The GEOS3C equation, with three parameters estimated by matching several points on the saturation curve (vapor pressure and corresponding liquid volumes), compares favorably to other equations in literature, being simple enough for applications.

Van der Waals Mixing Rules for Cubic Equations of State

1987 ◽  
pp. 101-114 ◽  
Author(s):  
E. H. Benmekki ◽  
T. Y. Kwak ◽  
G. A. Mansoori
Keyword(s):  
Equations Of State ◽  
Van Der Waals ◽  
Mixing Rules

Mixing-rules calculations and AAMD simulations for EOSs of deuterium–xenon mixtures

2018 ◽  
Vol 96 (12) ◽  
pp. 1404-1408
Author(s):  
Zhencen He ◽  
Zhimin Hu ◽  
Yong Hou ◽  
Jiamin Yang ◽  
Jianmin Yuan ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Equations Of State ◽  
Mixing Rules ◽  
Self Consistency ◽  
Better Than ◽  
The Ideal

We present the calculated equations of state (EOSs) for deuterium–xenon mixtures using mixing rules. Three mixing rules, which are the ideal rule, volume rule, and pressure rule, were used for the calculations, and the thermodynamic self-consistency was evaluated. The volume rule predicts the pressures of mixtures rather accurately, but it fails in the predictions of energies. The pressure ionization has an impact on energy and pressure. Furthermore, the calculated results of the mixing rules were compared with average-atom molecular dynamics (AAMD) simulations, and the pressure rule performs better than the ideal and volume rules over the investigated range.

Sign in / Sign up

Export Citation Format

Share Document