Application of the extended LJ potential-based equation of state to predict the density of five different classes of refrigerant systems (HCFCs, HFCs, HFEs, PFAs, and PFAAs)

The major goal of this work is to apply the extended Lennard-Jones potential-based equation of state (ELJ-based EoS) to predict the density of five different classes of refrigerant systems including chlorofluorocarbons, hydrochlorofluorocarbons, hydrofluorocarbons, hydrofluoroethers, perfluoroalkanes, and perfluoroalkylalkane. This EoS is based on an effective near-neighbor pair potential of the Lennard-Jones (12,6,3) type. The temperature dependencies of the parameters of the equation of state can be calculated at any temperature for each refrigerant. The calculated parameters along with the ELJ-based EoS have been used to calculate the density and isothermal compressibility coefficient of different refrigerants. A comparison between the predicted results and experimental data shows that the agreement is good. The total absolute average deviation of density for 14,871 data was found to be 0.34 compared with experimental data. Comparisons with the other EoSs show that the ELJ-based EoS is more accurate than other EoSs for most of the studied refrigerants.