Isothermal Vapor-Liquid Equilibrium of HFC-161+DMETrEG within the Temperature Range of 293.15-353.15 K and Comparison for HFC-161 Combined with Different Absorbents

摘要

Fluoroethane (HFC-161) is one of the most promising alternative refrigerants because of its excellent environmental and thermodynamic properties. It was considered as one of the most promising absorption working fluids in the absorption refrigeration. To make a better application of the refrigerant in absorption refrigeration systems, suitable absorbents should be selected for matching HFC-161. Vapor-liquid equilibrium (VLE) data is the key of the chemical engineering simulation and the refrigeration cycle calculation. On the basis of these, the vapor-liquid equilibrium data for the mixture of HFC-161 + dimethyl ether triethylene glycol were obtained at temperatures from 293.15 to 353.15 K by using a recirculation apparatus. The VLE data were then correlated by the Peng-Robinson (PR) equation of state combined with the modified Huron-Vidal first order (MHV1) mixing rule and nonrandom two liquid (NRTL) model. The experimental results had a good consistency with calculated values. Phase behaviors of HFC-161 combined with different absorbents were compared in this paper.