화학공학소재연구정보센터
Fluid Phase Equilibria, Vol.298, No.1, 106-112, 2010
Vapor-liquid equilibrium measurement and modeling for the difluoromethane plus pentafluoroethane plus propane ternary mixture
Vapor-liquid equilibrium data for the difluoromethane (R32) + pentafluoroethane (R125) + propane (R290) ternary mixture were measured at 5 isotherms between 263.15 K and 323.15 K. The measurement was carried out using a circulation-type apparatus recently developed, which was validated with binary mixtures. With binary interaction parameters obtained for the three corresponding binary mixtures, VLE modeling and prediction were performed for the ternary mixture using the Peng-Robinson equation of state with the classical mixing rules and MHV1 mixing rules. Hou's group contribution model for VLE of new refrigerant mixtures was further tested with the experimental data for the ternary system. The predicted pressure and vapor phase composition were compared with experimental ones. (C) 2010 Elsevier B.V. All rights reserved.