Investigation on the Vapor–Liquid Equilibrium for the Ternary Mixture HFC-32 + HFC-125 + HFC-161 at Temperatures from 265.15 K to 303.15 K

• DOI: 10.1021/acs.jced.5b00405
• Publication Date: 2015-08-24T18:47:06Z
• Authors: Xuehui Wang; Zanjun Gao; Xu Gao; Wenjie Guan; Xiaohong Han; Guangming Chen
• Keywords: 13. Climate action; 02 engineering and technology; 0204 chemical engineering; 7. Clean energy

The ternary mixture HFC-32 + HFC-125 + HFC-161 was considered as a potential alternative refrigerant to HCFC-22 and HFC-410A for the environmentally friendly and excellent thermodynamic properties. Vapor–liquid equilibrium data are necessary for the mixed refrigerant to evaluate its optimal composition and the cycle performance in the refrigeration cycles. On the basis of this, the vapor–liquid equilibrium data for the mixture HFC-32 + HFC-125 + HFC-161 were investigated by the experiment. The vapor–liquid equilibrium data were correlated with the Peng–Robinson (PR) equation-of-state combined with the LCVM (linear combination of Vidal and Michelsen) mixing rule and the NRTL (nonrandom two liquid) excess free energy model. The correlated results revealed a good agreement with the experimental data. The average value of the absolute relative pressure deviations was 0.9 %, and the average values of the absolute composition deviations (abs (y1 – y1,cal), abs(y2 – y2,cal)) were 0.0098 and 0.0105, respectively....