Zahra Sharafi - Department of Chemistry, Islamic Azad University, Marvdasht beranch, Marvdasht Iran
Hossein Eslami - Department of Chemistry, College of Sciences, Persian Gulf University, Boushehr Iran

A modified perturbed hard-sphere-chain equation of state has been employed to calculate the PVT properties of refrigerant mixtures.We have compared the predicted equation of state with literature experimental data, ISM equation of state and Peng-Robinson equation of state. The results indicate the proposed equation of state is more accurate than these equations of state.