Binary mixtures in and beyond the critical region: thermodynamic properties

• Published in: Fluid phase equilibria Vol. 150; pp. 469 - 478
• Main Authors: Kiselev, S.B., Rainwater, J.C., Huber, M.L.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-09-1998
• Subjects: Acentric factor; Binary mixtures; Critical region; Equation of state; Ethane; n-Butane; Phase behavior; R114; R12; R13B1; R22; Thermodynamic properties; R12; R22; Acentric factor; R114; n-Butane; Critical region; R13B1; Binary mixtures; Phase behavior; Thermodynamic properties; Equation of state; Ethane
• ISSN: 0378-3812; 1879-0224
• DOI: 10.1016/S0378-3812(98)00294-5

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).