Composition containing refrigerant, use of same, refrigerator having same, and method for operating said refrigerator

A composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), trifluoroethylene (HFO-1123), and trans-1,3,3,3-tetrafluoropropene (R1234ze(E)),

• wherein
• when the mass % of HFO-1132(E), HFO-1123, and R1234ze(E) based on their sum in the refrigerant is respectively represented by x, y, and z, coordinates (x,y,z) in a ternary composition diagram in which the sum of HFO-1132(E), HFO-1123, and R1234ze(E) is 100 mass % are within the range of a figure surrounded by line segments AA1, A1B, BD, DR, RC, CO, and OA that connect the following 7 points:
• point A (76.2, 0.0, 23.8),
• point A1 (40.0, 30.0, 30.0),
• point B (0.0, 68.8, 31.2),
• point D (0.0, 86.3, 13.7),
• point R (23.7, 71.3, 5.0),
• point C (32.9, 67.1, 0.0), and
• point O (100.0, 0.0, 0.0), or on these line segments, excluding the points on the line segments BD, CO, and OA;
• the line segments AA1, A1B, BD, CO, and OA are straight lines,
• the points on the line segment DR are represented by (x, 0.0057x2−0.7688x+86.3, −0.0057x2−0.2312x+13.7), and
• the points on the line segment RC are represented by (x, 0.00945x2−0.9915x+89.489, −0.00945x2−0.0085x+10.511), and
• wherein the refrigerant comprises R1234ze(E) in an amount of 15 mass % or more relative to the entire refrigerant.