Liu Zhigang,Wu Jiangtao,Chu Yingjie
(State Key Laboratory of Multiphase Flow in Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China)
Abstract:A new refrigerant mixture HFC32£¯HFC125£¯HFC152a was presented to replace the refrigerant HCFC22. On basis of the software REFPROP 7.0, a computer program calculating thermodynamic properties of refrigerants was developed and the pressureª²enthalpy diagram of this new refrigerant mixture was drawn.Compared with other refrigerants such as R410A, R407C, and HCFC22, the new refrigerant mixture has obvious improvements in thermodynamic efficiency, and it is a dropª²in alternative for airª²conditioner because its refrigerating capacity is similar to that of HCFC22. The ozone depletion potential(ODP) of this new refrigerant mixture is 0, and its global warming potential(GWP) is nearly 0. In addition, this refrigerant mixture has little flammability and can run safely. It is concluded that this new refrigerant mixture is an ideal potential alternative refrigerant.
Keywords:HFC32£¯HFC125£¯HFC152a;refrigerant;pressure-enthalpy diagram