Among current air conditioning refrigerants

R410A and R407C are the main alternative refrigerants of R22. Their ODP is zero

but their GWP is relatively high

with a negative impact on the environment. For the selected mixed refrigerant composed of mass fraction of 40% of R1234ze and 60% R152a (represented by NCUR01)

its theoretical analyses according to REFOROP9.0

analyzing its environmental impact index

its temperature glide characteristics

theoretical thermodynamic cycle performance

thermodynamic properties

safety and lubricants

and other factors are carried out and compared with R22

its major alternative refrigerants R410A and R407C. The results show that the mixed refrigerant has very small impact on the environment

presents similar saturation pressure line to that of R22

and has a lower discharge temperature and a higher COP. The discharge temperature of NCUR01 is 18℃ lower than that of R22 and R410A

6℃ lower than that of R407C. COP of NCUR01 is about 5% higher than that of R22

19.6% higher than R410A

and 9.7% higher than R407C. Thus it is an excellent near-azeotropic refrigerant

a feasible alternative of R22.