| 초록 |
Chlorofluorocarbons (CFCs) have been widely used as refrigerants, blowing agents, propellants, or cleaning agents due to their outstanding properties. However, production and use of CFCs are currently being phased out under the international Montreal Protocol agreement because of global environmental concerns. HFC mixtures have been considered as promising candidates for replacement of CFC compounds since their ozone depletion potentials are low. Vapor-liquid equilibrium data are required as one of the most important types of information in evaluating the performance of refrigeration cycles and determining their optimal compositions. In this work, we measured VLE data for two binary systems of Trifluoromethane(HFC-23) + 1,1,1,2-Tetrafluoroethane (HFC-134a) and Trifluoromethane(HFC-23) + 1,1,1,2,3,3,3- Heptafluoropropane (HFC-227ea) at 283.15 and 293.15K, respectively. Experimental data were correlated with the Peng-Robinson equation of state using the Wong and Sandler mixing rule |
