| abstract |
PROBLEM TO BE SOLVED: To provide a composition containing a refrigerant having characteristics of having a coefficient of performance (COP) equal to or higher than that of R404A and refrigerating capacity, and having a sufficiently small GWP. A composition containing a refrigerant. The refrigerant contains trans-1,2-difluoroethylene (HFO-1132 (E)) and 2,3,3,3-tetrafluoropropene (HFO-1234yf). For the total mass of HFO-1132 (E) and HFO-1234yf The content ratio of HFO-1132 (E) is 35.0 to 65.0% by mass, The content ratio of HFO-1234yf is 65.0 to 35.0% by mass, A composition in which the refrigerant is used to operate a refrigeration cycle in which the evaporation temperature is -75 to -5 ° C. [Selection diagram] None |