Binary mixtures in and beyond the critical region: thermodynamic properties

An extended law of corresponding states, in combination with a parametric crossover equation of state, is applied to the prediction of thermodynamic properties and phase behavior of pure fluids and binary mixtures over a wide region around vapor–liquid critical points. For pure fluids, a generalized...

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Bibliographic Details
Published in:Fluid phase equilibria 1998-09, Vol.150, p.469-478
Main Authors: Kiselev, S.B., Rainwater, J.C., Huber, M.L.
Format: Article
Language:English
Subjects:
Acentric factor
Binary mixtures
Critical region
Equation of state
Ethane
n-Butane
Phase behavior
R114
R12
R13B1
R22
Thermodynamic properties
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Summary:An extended law of corresponding states, in combination with a parametric crossover equation of state, is applied to the prediction of thermodynamic properties and phase behavior of pure fluids and binary mixtures over a wide region around vapor–liquid critical points. For pure fluids, a generalized form of the model is given that requires only the acentric factor of the pure component. For mixtures, the critical locus is also required. A good representation of thermodynamic property data is achieved in the range of temperatures 0.8 T c( x)≤ T≤1.5 T c( x) and densities 0.35 ρ c( x)≤ ρ≤1.65 ρ c( x).
ISSN:0378-3812
1879-0224
DOI:10.1016/S0378-3812(98)00294-5