Amin Ahmadpour - National Petrochemical company,Petrochemical Research and Technology company,Mahshahr Center,Mahshahr,
Shahin Khosharay - National Petrochemical company,Petrochemical Research and Technology company,Mahshahr Center,Mahshahr,

The aim of this work is to model the solubilities of refrigerant gases containing Ethane, Propane, i-Butane, Carbon Dioxide, sulfur dioxide, Propylene HCFCs and HFCs (chlorodifluoromethane, trifluoromethane, difluoromethane, 1,1,1,2,2-pentafluoroethane, 1,1,1,2-tetrafluoroethane and 1,1- difluoroethane) in water. The combination of cubic-plus-association equation of state (CPA EOS), the van der Waals mixing rule and the temperature dependant binary interaction parameter is utilized for the phase equilibrium calculations of the (water+ refrigerant gas) systems. Furthermore, the Peng-Robinson EOS is applied for the physical term of CPA EOS. Firstly, the pure component parameters of CPA EOS for water are obtained according to the pure water vapor pressures and densities. The solubilities reproduced by applying the CPA EOS are in a very good agreement with experimental data (overall AAD~2.31).

CPA EOS, Refrigerant, Water, Solubility