Near-azeotropic refrigerant of ternary mixture CO
Provided is a near-azeotropic refrigerant of a ternary mixture CO 2 /R41/R170, including the following components by mass percentage: 10% to 64% of CO 2 , 10% to 47% of R41, and 26% to 52% of R170. The near-azeotropic refrigerant has a low global warming potential (GWP) and a low temperature glide, and can still maintain a near-azeotropic effect at −90° C.
1 . A near-azeotropic refrigerant of a ternary mixture CO 2 /R41/R170, consisting of the following components by mass percentage: 10% to 40% of CO 2 , 30% to 47% of R41, and 26% to 52% of R170, wherein the near-azeotropic refrigerant has a temperature glide of less than 0.2° C. at a bubble point temperature of at or below 0° C.
2 . The near-azeotropic refrigerant of the ternary mixture CO 2 /R41/R170 according to claim 1 , consisting of the following components by mass percentage: 10% to 40% of the CO 2 , 30% to 42% of the R41, and 30% to 48% of the R170, wherein the near-azeotropic refrigerant has the bubble point temperature of −20° C. to 0° C.
3 . The near-azeotropic refrigerant of the ternary mixture CO 2 /R41/R170 according to claim 1 , consisting of the following components by mass percentage: 10% to 35% of the CO 2 , 30% to 38% of the R41, and 32% to 52% of the R170, wherein the near-azeotropic refrigerant has the bubble point temperature of −40° C. to 0° C.
4 . The near-azeotropic refrigerant of the ternary mixture CO 2 /R41/R170 according to claim 1 , consisting of the following components by mass percentage: 10% to 30% of the CO 2 , 30% to 38% of the R41, and 36% to 52% of the R170, wherein the near-azeotropic refrigerant has the bubble point temperature of −60° C. to 0° C.
5 . A near-azeotropic refrigerant of a ternary mixture CO 2 /R41/R170, consisting of the following components by mass percentage: 10% to 15% of CO 2 , 35% to 47% of R41, and 40% to 52% of R170, wherein the near-azeotropic refrigerant has a temperature glide of less than 0.2° C. at a bubble point temperature of at or below 0° C.