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

A composition comprising a refrigerant,

• (1) the refrigerant comprising 2,3,3,3-tetrafluoro-1-propene (R1234yf) and/or 1,3,3,3-tetrafluoropropene (R1234ze), trans-1,2-difluoroethylene (HFO-1132(E)), and CO2 in a total amount of 99.5 mass % or more based on the total amount of the refrigerant, wherein
• the refrigerant comprises R1234yf, and
• when the mass % of HFO-1132(E), R1234yf, and CO2 based on their sum 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), R1234yf, and CO2 is 100 mass % are within the range of a figure surrounded by straight lines Ar=0Br=0, Br=0Or=0, and Or=0Ar=0 that connect the following 3 points:
• point Ar=0 (30.0, 69.1, 0.9),
• point Br=0 (6.2, 83.8, 10.0), and
• point Or=0 (30.0, 60.0, 10.0), or
• on the above straight lines;
• (2) the refrigerant comprising R1234yf and/or R1234ze, HFO-1132(E), and CO2 in a total amount of 99.5 mass % or more based on the total amount of the refrigerant, wherein
• the refrigerant comprises R1234ze, and
• when the mass % of HFO-1132(E), R1234ze, and CO2 based on their sum 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), R1234ze, and CO2 is 100 mass % are within the range of a figure surrounded by straight lines Ar=1Br=1, Br=1Or=1, and Or=1 Ar=1 that connect the following 3 points:
• point Ar=1 (30.0, 62.9, 7.1),
• point Br=1 (23.1, 66.9, 10.0), and
• point Or=1 (30.0, 60.0, 10.0), or
• on the above straight lines;
• (3) the refrigerant comprising R1234yf, R1234ze, HFO-1132(E), and CO2 in a total amount of 99.5 mass % or more based on the total amount of the refrigerant, wherein
• when a ratio of R1234ze to the sum of R1234yf and R1234ze is represented by r (0<r<1), and
• when the mass % of HFO-1132(E), the sum of R1234yf and R1234ze (R1234yf+R1234ze), and CO2 based on their sum 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), R1234yf+R1234ze, and CO2 is 100 mass % are within the range of a figure surrounded by straight lines Ar=0Br=0, Br=0Or=0, and Or=0Ar=0 that connect the following 3 points:
• point Ar (30.0, −6.2r+69.1, 6.2r+0.9),
• point Br (0.2r2+16.7r+6.2, −0.2r2−16.7r+83.8, 10.0), and
• point Or (30.0, 60.0, 10.0), or
• on the above straight lines;
• (4) the refrigerant comprising R1234yf and/or R1234ze, HFO-1132(E), and CO2 in a total amount of 99.5 mass % or more based on the total amount of the refrigerant, wherein
• the refrigerant comprises R1234yf, and
• when the mass % of HFO-1132(E), R1234yf and CO2 based on their sum 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), R1234yf, and CO2 is 100 mass % are within the range of a figure surrounded by line segments Hr=0Ir=0, Ir=0Jr=0, Jr=0J2r=0, J2r=0K2r=0, K2r=0Kr=0, Kr=0Qr=0, and Qr=0Hr=0 that connect the following 7 points:
• point Hr=0 (12.2, 87.8, 0.0),
• point Ir=0 (0.0, 98.1, 1.9),
• point Jr=0 (0.0, 94.8, 5.2),
• point J2r=0 (10.0, 85.4, 4.6),
• point K2r=0 (20.0, 75.1, 4.9),
• point Kr=0 (30.0, 64.0, 6.0), and
• point Qr=0 (30.0, 70.0, 0.0), or
• on the above line segments Hr=0Ir=0, Ir=0Jr=0, Jr=0Kr=0, and Kr=0Qr=0 (excluding points Hr=0 and Qr=0);
• the line segments Ir=0Jr=0, Kr=0Qr=0 and Qr=0Hr=0 are straight lines;
• the coordinates (x,y,z) of points on the line segment Hr=0Ir=0 are represented by (x, −0.0013x2−0.8279x+98.1, 0.0013x2−0.1721x+1.9);
• the coordinates (x,y,z) of points on the line segment Jr=0J2r=0 are represented by (x, −0.004x2−0.9x+94.8, 0.004x2−0.1x+5.2);
• the coordinates (x,y,z) of points on the line segment J2r=0K2r=0 are represented by (x, −0.006x2−0.85x+94.5, 0.006x2−0.15x+5.5);
• and
• the coordinates (x,y,z) of points on the line segment K2r=0Kr=0 are represented by (x, −0.002x2−1.01x+96.1, 0.002x2+0.0 1x+3.9);
• (5) the refrigerant comprising R1234yf and/or R1234ze, HFO-1132(E), and CO2 in a total amount of 99.5 mass % or more based on the total amount of the refrigerant, wherein
• the refrigerant comprises R1234ze, and
• when the mass % of HFO-1132(E), R1234ze and CO2 based on their sum 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), R1234ze, and CO2 is 100 mass % are within the range of a figure surrounded by line segments Hr=1Ir=1, Ir=1Jr=1, Jr=1J2r=1, J2r=1K2r=1, K2r=1Kr=1, Kr=1Qr=1, and Qr=1Hr=1 that connect the following 7 points:
• point Hr=1 (22.7, 77.3, 0.0),
• point Ir=1 (0.0, 96.4, 3.6),
• point Jr=1 (0.0, 96.1, 3.9),
• point J2r=1 (10.0, 87.6, 2.4),
• point K2r=1 (20.0, 78.1, 1.9),
• point K1'2 (30.0, 67.8, 2.2), and
• point Qr=1 (30.0, 70.0, 0.0), or
• on the above line segments Hr=1Ir=1, Ir=1Jr=1, Jr=1Kr=1, and Kr=1Qr=1 (excluding points Hr=1 and Qr=1);
• the line segments Ir=1Jr=1, Kr=1Qr=1, and Qr=1Hr=1 are straight lines;
• the coordinates (x,y,z) of points on the line segment Hr=1Ir=1 are represented by (x, −0.003x2−0.7723x+96.4, 0.003x2−0.2277x+3.6);
• the coordinates (x,y,z) of points on the line segment Jr=1J2r=1 are represented by (x, −0.006x2−0.79x+96.1, 0.006x2−0.21x+3.9);
• the coordinates (x,y,z) of points on the line segment J2r=1K2r=1 are represented by (x, −0.002x2−0.89x+96.7, 0.002x2−0.11x+3.3);
• and
• the coordinates (x,y,z) of points on the line segment K2r=1Kr=1 are represented by (x, −0.002x2−0.93x+97.5, 0.002x2−0.07x+2.5);
• or
• (6) the refrigerant comprising R1234yf, R1234ze, HFO-1132(E), and CO2 in a total amount of 99.5 mass % or more based on the total amount of the refrigerant, wherein
• when a ratio of R1234ze to the sum of R1234yf and R1234ze is represented by r (0<r<1), and
• when the mass % of HFO-1132(E), the sum of R1234yf and R1234ze (R1234yf+R1234ze), and CO2 based on their sum 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), R1234yf+R1234ze, and CO2 is 100 mass % are within the range of a figure surrounded by line segments HrIr, IrJr, JrJ2r, J2rK2r, K2rKr, KrQr, and QrHr that connect the following 7 points:
• point Hr (r2+9.5r+12.2, −r2−9.5r+87.8, 0.0),
• point Ir (0.0, −0.6r2−1.1r+98.1, 0.6r2+1.1r+1.9),
• point Jr (0.0, −0.6r2+1.9r+94.8, 0.6r2−1.9r+5.2),
• point J2r (10.0, −0.4r2+2.6r+85.4, 0.4r2−2.6r+4.6),
• point K2r (20.0, 3.0r+75.1, −3.0r+4.9),
• point Kr (30.0, −0.4r2+4.2r+64.0, 0.4r2−4.2r+6.0), and
• point Qr (70.0, 30.0, 0.0), or
• on the above line segments HrIr, IrJr, JrKr, and KrQr (excluding points Hr and Qr);
• the line segments IrJr, KrQr, and QrHr are straight lines;
• the coordinates (x,y,z) of points on the line segment HrIr are represented by (x, (−0.003r2+0.0013r−0.0013)x2+(0.102r2−0.0464r−0.8279)x+(−0.6r2−1.1r+98.1), (0.003r2−0.0013r+0.0013)x2+(−0.102r2+0.0464r−0.1721)x+(0.6r2+1.1r+1.9));
• the coordinates (x,y,z) of points on the line segment JrJ2r are represented by (x, (0.0068r2−0.0034r−0.004)x2+(0.06r2+0.05r−0.9)x+(−0.6r2+1.9r+94.8), (0.004r2−0.002r+0.004)x2+(−0.06r2−0.05r−0.1)x+(0.6r2−1.9r+5.2));
• the coordinates (x,y,z) of points on the line segment J2K2r are represented by (x, (0.016r2−0.012r−0.006)x2+(−0.44r2+0.4r−0.85)x+(2.4r2−0.2r+94.5), (−0.016r2+0.012r+0.006)x2+(0.44r2−0.4r−0.15)x+(−2.4r2+0.2r+5.5));
• and
• the coordinates (x,y,z) of points on the line segment K2rKr are represented by (x, (0.008r2−0.008r−0.002)x2+(−0.44r2+0.52r−1.01)x+(5.6r2−4.2r+96.1), (−0.008r2+0.008r+0.002)x2+(0.44r2−0.52r+0.01)x+(−5.6r2+4.2r+3.9)).