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Title: The ISM equation of state applied to refrigerants

Abstract

In this work, the authors apply an equation of state based on statistical-mechanical perturbation theory to liquid refrigerants and their mixtures. Three temperature-dependent parameters are needed to use the equation of state: the second virial coefficient, B{sub 2}(T), an effective van der Waals covolume, b(T), and a scaling factor, {alpha}(T). The second virial coefficients are calculated from a correlation based on the heat of vaporization, {Delta}H{sub vap}, and the liquid density at the freezing point, p{sub fp}. {alpha}(T) and {beta}(T) can also be calculated from the second virial coefficient by a scaling rule. Based on the theory, these two temperature-dependent parameters depend only on the repulsive branch of the potential function, and therefore, by the procedure, can be found from {Delta}H{sub vap} and p{sub fp}. The theory has considerable predictive power, since it permits the construction of the p-v-T surface from the heat of vaporization plus the triple-point density. The equation of state is tested for pure, two- and three-component liquid refrigerant mixtures.

Authors:
; ;
Publication Date:
Research Org.:
Persian Gulf Univ., Boushehr (IR)
OSTI Identifier:
20020847
Resource Type:
Journal Article
Journal Name:
International Journal of Thermophysics
Additional Journal Information:
Journal Volume: 20; Journal Issue: 5; Other Information: PBD: Sep 1999; Journal ID: ISSN 0195-928X
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; EQUATIONS OF STATE; REFRIGERANTS; MIXTURES; VIRIAL EQUATION; VAN DER WAALS FORCES; SCALING LAWS; PERTURBATION THEORY; TEMPERATURE DEPENDENCE

Citation Formats

Eslami, H., Sabzi, F., and Boushehri, A. The ISM equation of state applied to refrigerants. United States: N. p., 1999. Web. doi:10.1023/A:1021401407904.
Eslami, H., Sabzi, F., & Boushehri, A. The ISM equation of state applied to refrigerants. United States. doi:10.1023/A:1021401407904.
Eslami, H., Sabzi, F., and Boushehri, A. Wed . "The ISM equation of state applied to refrigerants". United States. doi:10.1023/A:1021401407904.
@article{osti_20020847,
title = {The ISM equation of state applied to refrigerants},
author = {Eslami, H. and Sabzi, F. and Boushehri, A.},
abstractNote = {In this work, the authors apply an equation of state based on statistical-mechanical perturbation theory to liquid refrigerants and their mixtures. Three temperature-dependent parameters are needed to use the equation of state: the second virial coefficient, B{sub 2}(T), an effective van der Waals covolume, b(T), and a scaling factor, {alpha}(T). The second virial coefficients are calculated from a correlation based on the heat of vaporization, {Delta}H{sub vap}, and the liquid density at the freezing point, p{sub fp}. {alpha}(T) and {beta}(T) can also be calculated from the second virial coefficient by a scaling rule. Based on the theory, these two temperature-dependent parameters depend only on the repulsive branch of the potential function, and therefore, by the procedure, can be found from {Delta}H{sub vap} and p{sub fp}. The theory has considerable predictive power, since it permits the construction of the p-v-T surface from the heat of vaporization plus the triple-point density. The equation of state is tested for pure, two- and three-component liquid refrigerant mixtures.},
doi = {10.1023/A:1021401407904},
journal = {International Journal of Thermophysics},
issn = {0195-928X},
number = 5,
volume = 20,
place = {United States},
year = {1999},
month = {9}
}