Modeling binary vapor–liquid equilibrium data containing perfluorocarbons using the Peng–Robinson and the PC-SAFT equations of state
DOI: 10.1016/J.IJREFRIG.2017.09.008
关键词: Vapor–liquid equilibrium 、 Thermodynamics 、 Flory–Huggins solution theory 、 Binary system 、 Binary number 、 Phase equilibrium 、 Materials science 、 Critical point (thermodynamics) 、 Vapor phase
摘要: Abstract In this communication, thermodynamic modeling of twenty four binary systems containing perfluorocarbon compounds is studied using the Peng–Robinson and PC-SAFT equations state. Interaction parameters were estimated through fitting to experimental equilibrium pressures vapor phase compositions. Very good results obtained temperature-independent interaction parameter for both According results, percent deviations in pressure varying between 0.5 7.7 PR EoS 0.2 6.5 EoS. Also, composition 0.1 6.6 7.4 Furthermore, when system has critical point, calculations do not converge common methods. For solving problem, a solution suggested that was absolutely effective on all systems.
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