an analytical equation of state for saturated liquid refrigerant ternary mixtures

Authors
abstract

in this work an analytical equation of state has been employed to calculate the pvt properties ofternary refrigerant mixtures. the theoretical eos is that of ihm, song and mason, which is based onstatistical-mechanical perturbation theory, and the two constants are enthalpy of vaporization δhvapand molar density ρnb, both at the normal boiling temperature. the following three temperaturedependentparameters are needed to use the eos: the second virial coefficient, b2(t), an effectivevan der waals covolume, b(t), and a scaling factor, α(t). the second virial coefficients arecalculated from a correlation based on the heat of vaporization, hvap, and the liquid density at thenormal boiling point, ρnb. α(t) and b(t) can also be calculated from second virial coefficients byscaling rules. this procedure predicts liquid densities ofternary mixtures at saturated state with a temperature range from 173 k to 373 k and pressure up to4.0 mpa, with very good results.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

An Analytical Equation of State for Saturated Liquid Refrigerant Ternary Mixtures

In this work an analytical equation of state has been employed to calculate the PVT properties ofternary refrigerant mixtures. The theoretical EoS is that of Ihm, Song and Mason, which is based onstatistical-mechanical perturbation theory, and the two constants are enthalpy of vaporization ΔHvapand molar density ρnb, both at the normal boiling temperature. The following three temperaturedepende...

full text

An Analytical Equation of State for Molten Polymers

An analytical equation of state (EOS) developed by Ihm-Song-Mason (ISM) has been applied tocalculate some thermophysical properties of molten polymers including Poly (1-octene) (PO), Poly (vinylmethyl ether) (PVME), Poly (vinyl chloride) (PVC), and Poly (styrene) (PS). Three temperature-dependentparameters of the ISM EOS have been determined based on the alternative scaling constants, dispersiv...

full text

An Analytical Equation of State Extended to Copolymers

calculate some thermodynamic properties of molten polymers including specific volume and isothermal compressibility (S.M. Hoseini, Physical Chemistry & Electrochemistry, 2 (2014) 56-65). This work extended that EOS to predict the volumetric properties of some molten ethylene copolymers including ethylene/1-octene, ethylene/1-butene (xethylene equal to 0.8543 and 0.563), ethylene/propene. The ab...

full text

An equation of state for argon

An analytical equation of state was applied to calculate the thermodynamic properties for argon.The equation of state is that of Song and Mason. It is based on a statistical-mechanical perturbationtheory of the hard convex bodies and can be written as fifth-order polynomial in the density. Thereexist three temperature-dependent parameters: the second virial coefficient, an effective molecularvo...

full text

Representation Of The Boundary Conditions For Refrigerant Mixtures With The Lemmon-Jacobsen Equation Of State

Vapour-liquid equilibria (VLE) data are within the most important experimental data to correctly represent the mixtures' behaviour at the saturation boundaries. In the last years, the VLE of several new binary mixtures have been studied by our group in order to find possible alternatives for the traditional refrigerants. The data have been correlated with the Lemmon-Jacobsen model, which is the...

full text

an analytical equation of state for molten polymers

an analytical equation of state (eos) developed by ihm-song-mason (ism) has been applied tocalculate some thermophysical properties of molten polymers including poly (1-octene) (po), poly (vinylmethyl ether) (pvme), poly (vinyl chloride) (pvc), and poly (styrene) (ps). three temperature-dependentparameters of the ism eos have been determined based on the alternative scaling constants, dispersiv...

full text

My Resources

Save resource for easier access later


Journal title:
physical chemistry and electrochemistry

جلد ۱، شماره ۱، صفحات ۲۹-۳۵

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023