| abstract |
PROBLEM TO BE SOLVED: To provide a composition containing a refrigerant having a coefficient of performance (COP) and a refrigerating capacity equal to or higher than those of R404A and having a sufficiently small GWP. A composition containing a refrigerant, wherein the refrigerant is trans-1,2-difluoroethylene (HFO-1132(E)), 1,1,2-trifluoroethylene (HFO-1123) and Containing 2,3,3,3-tetrafluoropropene (HFO-1234yf), the total concentration of the three components is 99.5% by mass or more with respect to the entire refrigerant, and the three components as apexes In the triangular composition diagram, the mass ratio of the three components (HFO-1132(E)/HFO-1123/HFO-1234yf mass%) is point A (42.5/1.0/56.5), point B (27.1/1.0/71.9). ), point C (1.0/30.4/68.6), point D (1.0/57.0/42.0), and point E (42.5/24.1/33.4) within the area surrounded by the figure that passes through the five points. .. [Selection diagram] Figure 1 |