International Conference on Chemistry and Industry , 2004-12-11

Title : ( Pressure-Volume-Temperature and Thermodynamic Properties of Some Refrigerants Using an Equation of State )

Authors: Elaheh Kafshdare Goharshadi , Fatemeh Moosavi , Ali Morsali ,

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Due to severe international regulations (Montreal Protocol (1987), Kyoto Protocol (1997), and etc.), on the use of chlorofluorocarbons (CFCs), it is absolutely necessary to find and select the efficiently and environmentally acceptable refrigerants with zero ozone depletion potential (ODP). As a result, industry worldwide turned to hydrochlorofluorocarbons (HCFCs) as substitutes for CFCs. While HCFCs have a lower ozone depleting potential than CFCs, they still damage the ozone layer and have themselves become subject to scheduled phase out by 2030. Following the Montreal Protocol, many participants in the refrigerant manufacturing industry therefore looked towards hydrofluorocarbons (HFCs) as replacements for CFCs across a range of applications and HFCs are among the best fluids for the refrigeration industry. HFCs have almost zero ODP, since they do not contain chlorine. The purpose of this work is to report the results of simultaneous calculations of PVT data, thermodynamic properties such as isobaric expansion coefficient, isothermal compressibility, internal pressure, the difference between isobaric and isochoric heat capacities, and vapor-liquid equilibrium (VLE) prediction for some HCFC and HFC refrigerants using GMA EOS. A wide comparison with literature experimental data was made. The accuracy of the equation of state was determined by the statistical parameters, namely, the absolute average deviation (AAD), the average percentual deviation (bias), the root mean square deviation (RMSD), and the standard deviation (SD). The results show that the GMA equation of state reproduces the experimental thermodynamic properties of HCFCs and HFCs, within experimental errors throughout the liquid phase.

Keywords

, Hydrochlorofluorocarbons (HCFCs) refrigerants Hydrofluorocarbons (HFCs) refrigerants PVT data Thermodynamic properties Vapor, liquid equilibrium (VLE)
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@inproceedings{paperid:1025981,
author = {Kafshdare Goharshadi, Elaheh and Moosavi, Fatemeh and Morsali, Ali},
title = {Pressure-Volume-Temperature and Thermodynamic Properties of Some Refrigerants Using an Equation of State},
booktitle = {International Conference on Chemistry and Industry},
year = {2004},
location = {ریاض},
keywords = {Hydrochlorofluorocarbons (HCFCs) refrigerants Hydrofluorocarbons (HFCs) refrigerants PVT data Thermodynamic properties Vapor-liquid equilibrium (VLE) prediction},
}

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%0 Conference Proceedings
%T Pressure-Volume-Temperature and Thermodynamic Properties of Some Refrigerants Using an Equation of State
%A Kafshdare Goharshadi, Elaheh
%A Moosavi, Fatemeh
%A Morsali, Ali
%J International Conference on Chemistry and Industry
%D 2004

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