| abstract |
The present invention provides a composition containing a refrigerant, which has the characteristics of having a coefficient of performance (COP) and a freezing capability equal to or higher than that of R404A, and having a sufficiently small GWP. The present invention specifically provides a composition containing a refrigerant containing trans-1,2-difluoroethylene (HFO-1132(E)), 1,1,2-trifluoroethylene (HFO-1123) and 2,3,3,3-tetrafluoropropene (HFO-1234yf), the total concentration of the three components is 99.5 mass % or more with respect to the entire refrigerant, and the mass ratio of the three components is based on the three components as each The triangular composition diagram of the vertices is within the range of the area enclosed by the figure passing through the following 5 points: point A (HFO-1132(E)/HFO-1123/HFO-1234yf=42.5/1.0/56.5% by mass); point B (HFO-1132(E)/HFO-1123/HFO-1234yf=27.1/1.0/71.9 mass %); point C (HFO-1132(E)/HFO-1123/HFO-1234yf=1.0/30.4/68.6 mass %) %); point D (HFO-1132(E)/HFO-1123/HFO-1234yf=1.0/57.0/42.0 mass %); and point E (HFO-1132(E)/HFO-1123/HFO-1234yf=42.5 /24.1/33.4 mass %). |