# US 12,180,408 B2 · Composition containing refrigerant, use of same, freezer having same, and method for operating said freezer

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- Number: US 12,180,408 B2
- Document ID: US12180408B2
- Status: Granted
- Kind: B2
- Application number: 17/549,392
- Filed: 2021-12-13
- Published: 2022-06-09
- Granted: 2024-12-31
- Earliest claimed: 2019-06-19
- Assignees: Daikin Industries, Ltd.
- Applicants: Daikin Industries, Ltd.
- Inventors: Mitsushi Itano; Shun Ohkubo; Daisuke Karube
- Web page: https://patentgrep.com/patent/US12180408B2

## CPC

- C09K 5/045: {containing only fluorine as halogen}
- C09K 2205/126: Unsaturated fluorinated hydrocarbons
- C09K 2205/22: All components of a mixture being fluoro compounds
- C09K 2205/40: Replacement mixtures
- F25B 2400/12: Inflammable refrigerants
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS

## Abstract

An object of the present disclosure is to provide a novel low-GWP mixed refrigerant. To solve this problem, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroethylene (HFO-1123), 1,3,3,3-tetrafluoropropene (R1234ze), and difluoromethane (R32).

## Claims

### Claim 1

A composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroethylene (HFO-1123), 1,3,3,3-tetrafluoropropene (R1234ze), and difluoromethane (R32), wherein
when the mass % of HFO-1132 (E), HFO-1123, R1234ze, and R32 based on their sum in the refrigerant is respectively represented by x, y, z, and a,
if 0<a≤11.1, coordinates (x,y,z) in a ternary composition diagram in which the sum of HFO-1132 (E), HFO-1123, and R1234ze is (100−a) mass % are within the range of a figure surrounded by straight lines GG′, G′B, BD, DC, and CG that connect the following 5 points:
point G (0.0314a2−1.8079a+72.0, 100−a−x, 0.0),
point G′ (0.0314a2−1.8079a+72.0, −0.0199a2+0.0677a+3.8, 100−a−x−y),
point B (0.0, 0.0057a2−1.4197a+68.462, 100−a−y),
point D (0.0, 0.0234a2+0.0647a+86.3, 100−a−y), and
point C (−0.189a2−0.8664a+32.9, 100−a−x, 0.0),
or on the straight lines GG′, G′B, and DC (excluding point B, point D, point C, and point G);
if 11.1<a≤16.4, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GG′, G′B, BO, and OG that connect the following 4 points:
point G (0.015a2−1.4701a+70.266, 100−a−x, 0.0),
point G′ (−1.0566a+67.528, −0.3962a+6.4981, 100−a−x−y),
point B (0.0, 0.0057a2−1.4197a+68.462, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines GG′ and G′B (excluding point B, point O, and point G);
if 16.4<a≤26.6, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GI, IA, AB, BO, and OG that connect the following 5 points:
point G (0.015a2−1.4701a+70.266, 100−a−x, 0.0),
point I (0.015a2−1.4701a+70.266, 0.0, 100−a−x),
point A (0.0076a2−1.7a+76.031, 0.0, 100−a−x),
point B (0.0, 0.0057a2−1.4197a+68.462, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines GI and AB (excluding point G, point I, point A, and point B);
if 26.6<a≤43.8, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GI, IA, AB, BO, and OG that connect the following 5 points:
point G (0.00738a2−1.0762a+65.22, 100−a−x, 0.0),
point I (0.00738a2−1.0762a+65.22, 0.0, 100−a−x),
point A (0.00582a2−1.5915a+74.4, 0.0, 100−a−x),
point B (0.0, 0.00328a2−1.3169a+67.421, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines GI and AB (excluding point G, point I, point A, and point B); and
if 43.8<a≤47.8, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GI, IA, AB, BO, and OG that connect the following 5 points:
point G (−0.45a+51.91, 100−a−x, 0.0),
point I (−0.45a+51.91, 0.0, 100−a−x),
point A (−1.075a+62.985, 0.0, 100−a−x),
point B (0.0, −1.025a+60.895, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines GI and AB (excluding point G, point I, point A, and point B).

### Claim 2

A composition comprising a refrigerant,
the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroethylene (HFO-1123), 1,3,3,3-tetrafluoropropene (R1234ze), and difluoromethane (R32), wherein
when the mass % of HFO-1132 (E), HFO-1123, R1234ze, and R32 based on their sum in the refrigerant is respectively represented by x, y, z, and a,
if 0<a≤11.1, coordinates (x,y,z) in a ternary composition diagram in which the sum of HFO-1132 (E), HFO-1123, and R1234ze is (100−a) mass % are within the range of a figure surrounded by straight lines JQ, QN, NM, MK, KB, BD, DC, and CJ that connect the following 8 points:
point J (100−a−y, 0.0072a2−0.1704a+52.9, 0.0),
point Q (0.0112a2−1.3048a+62.1, 96.5−a−x, 3.5),
point N (0.0207a2−1.5817a+65.9, −0.0547a2+1.1392a+21.6, 100−a−x−y),
point M (0.0278a2−1.7325a+64.5, 80.0−a−x, 20.0),
point K (0.0421a2−2.2419a+62.5, 100−a−x−z, −0.0132a2+0.768a+25.1),
point B (0.0, 0.0057a2−1.4197a+68.462, 100−a−y),
point D (0.0, 0.0234a2+0.0647a+86.3, 100−a−y), and
point C (−0.189a2−0.8664a+32.9, 100−a−x, 0.0),
or on the straight lines JQ, QN, NM, MK, and KB (excluding point J and point B);
if 11.1<a≤26.6, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines JQ, QN, NM, MK, KB, BO, and OJ that connect the following 7 points:
point J (100−a−y, −0.0285a2+0.5371a+49.443, 0.0),
point Q (0.0166a2−1.382a+62.291, 96.5−a−x, 3.5),
point N (0.0183a2−1.5044a+65.339, −0.0395a2+1.4643a+16.116, 100−a−x−y),
point M (0.0145a2−1.4001a+62.448, 80.0−a−x, 20.0),
point K (0.0184a2−1.7325a+59.763, 100−a−x−z, −0.009a2+0.6996a+25.34),
point B (0.0, 0.0057a2−1.4197a+68.462, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines JQ, QN, NM, MK, and KB (excluding point J and point B);
if 26.6<a≤43.8, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines JQ, QN, NM, MK, KB, BO, and OJ that connect the following 7 points:
point J (100−a−y, 0.00542a2−1.3598a+75.92, 0.0),
point Q (0.0049a2−0.728a+53.204, 96.5−a−x, 3.5),
point N (0.0075a2−0.971a+58.81, −0.0038a2−0.0303a+30.581, 100−a−x−y),
point M (0.0019a2−0.7375a+53.782, 80.0−a−x, 20.0),
point K (0.0086a2−1.2345a+53.442, 100−a−x−z, −0.0045a2+0.4752a+28.157),
point B (0.0, 0.00328a2−1.3169a+67.421, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines JQ, QN, NM, MK, and KB (excluding point J and point B); and
if 43.8<a≤47.8, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines JN, NM, MK, KA, AB, BO, and OJ that connect the following 7 points:
point J (100−a−y, −0.9a+66.22, 0.0),
point N (−0.425a+49.315, −0.3a+8.86, 100−a−x−y),
point M (−0.525a+48.095, 80.0−a−x, 20.0),
point K (15.9, 0.0, 84.1−a),
point A (−1.075a+62.985, 0.0, 100−a−x),
point B (0.0, −1.025a+60.895, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines NM, MK, KA, and AB (excluding point J and point B).

### Claim 3

A composition comprising a refrigerant,
the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroethylene (HFO-1123), 1,3,3,3-tetrafluoropropene (R1234ze), difluoromethane (R32), and 2,3,3,3-tetrafluoro-1-propene (R1234yf), wherein
when the mass % of HFO-1132 (E), HFO-1123, R1234yf, R1234ze, and R32 based on their sum in the refrigerant is respectively x, y, z1, 72, and a, the sum of z1 and z2 is z, z/z is r, and w=−0.00162a2−0.0097a+0.592,
if 0<a≤11.1, and 0<r≤w, coordinates (x,y,z) in a ternary composition diagram whose vertices are a point of (100−a) mass % of HFO-1132 (E), a point of (100−a) mass % of HFO-1123, and a point of (100−a) mass % of the sum of R1234yf and R1234ze are within the range of a figure surrounded by straight lines GG′r, G′rBr, BrDr, DrC, and CG that connect the following 5 points:
point G (0.0314a2−1.8079a+72.0, 100−a−x, 0.0),
point G′r (0.0314a2−1.8079a+72.0, (−0.0708a2+0.9972a−4.8964) r2+(0.0424a2−0.7622a−3.5518) r+(−0.0199a2+0.0677a+3.8), 100−a−x−y),
point Br (0.0, −r2+(0.004a2−0.1343a−9.1) r+(0.008a2−1.4765a+68.8), 100−a−y),
point Dr (0.0, (−0.0603a2+0.8857a−2.4) r2+(0.1143a2−0.9267a−3.8) r+(0.0079a2+0.1471a+86.3), 100−a−y), and
point C (−0.189a2−0.8664a+32.9, 100−a−x, 0.0),
or on the straight lines GG′r, G′rBr, and DrC (excluding point G, point Br, point Dr, and point C);
if 0<a≤11.1, and w<r≤1, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GI, IAr, ArBr, BrDr, DrC, and CG that connect the following 6 points:
point G (0.0314a2−1.8079a+72.0, 100−a−x, 0.0),
point I (0.0314a2−1.8079a+72.0, 0.0, 100−a−x),
point Ar ((−0.0031a2+0.0165a−1.6) r2+(0.0095a2−0.2769a−6.0) r+(0.0084a2−1.7237a+76.2), 0.0, 100−a−x),
point Br (0.0, (−a2) r2+(0.004a2−0.1343a−9.1) r+(0.008a2−1.4765a+68.8), 100−a−y),
point Dr (0.0, (−0.0603a2+0.8857a−2.4) r2+(0.1143a2−0.9267a−3.8) r+(0.0079a2+0.1471a+86.3), 100−a−y), and
point C (−0.189a2−0.8664a+32.9, 100−a−x, 0.0),
or on the straight lines GI, IAr, ArBr, and DrC (excluding point G, point I, point Ar, point Br, point Dr, and point C);
if 11.1<a≤16.4, and 0<r≤w, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GG′r, G′rBr, BrO, and OG that connect the following 4 points:
point G (0.015a2−1.4701a+70.266, 100−a−x, 0.0),
point G′r (0.021a2−0.1227a+4.6878, (4.1824a2−114.54a+753.47) r2+(0.0346a2+0.3301a−14.707)r+(−0.0099a2−0.1227a+4.6878), 100−a−x−y),
point Br (0.0, (0.0839a2−3.138a+23.492) r2+(−0.0396a2+1.4292a−21.082) r+(0.0057a2+1.4197a+68.462), 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines GG′r and G′rBr (excluding point G and point Br);
if 11.1<a≤16.4, and w<r≤1, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GI, IAr, ArBr, BrO, and OG that connect the following 5 points:
point G (0.015a2−1.4701a+70.266, 100−a−x, 0.0),
point I (0.015a2−1.4701a+70.266, 0.0, 100−a−x),
point Ar ((0.1221a2−4.6027a−34.247) r2+(−0.0564a2+2.0217a−23.397) r+(0.0076a2−1.7a+76.031), 0.0, 100−a−x),
point Br (0.0, (0.0839a2−3.138a+23.492) r2+(−0.0396a2+1.4292a−21.082) r+(0.0057a2−1.4197a+68.462), 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines GI, IAr, and ArBr (excluding point G, point I, point Ar, and point Br);
if 16.4<a≤26.6, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GI, IAr, ArBr, BrO, and OG that connect the following 5 points:
point G (0.015a2−1.4701a+70.266, 100−a−x, 0.0),
point I (0.015a2−1.4701a+70.266, 0.0, 100−a−x),
point Ar ((0.1221a2−4.6027a−34.247) r2+(−0.0564a2+2.0217a−23.397) r+(0.0076a2−1.7a+76.031), 0.0, 100−a−x),
point Br (0.0, (0.0839a2−3.138a+23.492) r2+(−0.0396a2+1.4292a−21.082) r+(0.0057a2−1.4197a+68.462), 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines GI, IAr, and ArBr (excluding point G, point I, point Ar, and point Br);
if 26.6<a≤43.8, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GI, IAr, ArBr, BrO, and OG that connect the following 5 points:
point G (0.00738a2−1.0762a+65.22, 100−a−x, 0.0),
point I (0.00738a2−1.0762a+65.22, 0.0, 100−a−x),
point Ar ((−0.009465a2+0.6769a−13.119) r2+(0.01143a2−0.846a+4.9102) r+(0.005842a2−1.5915a+74.4), 0.100−a−x),
point Br (0.0, (−0.00279a2+0.1483a−2.5871) r2+(0.00277a2−0.1588a−8.822) r+(0.00327a2−1.3169a+67.421), 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines GI, IAr, and ArBr (excluding point G, point I, point Ar, and point Br); and
if 43.8<a≤47.8, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GI, IAr, ArBr, BrO, and OG that connect the following 5 points:
point G (−0.45a+51.91, 100−a−x, 0.0),
point I (−0.45a+51.91, 0.0, 100−a−x),
point Ar ((−1.6r2+(0.05a−12.39) r+(−1.075a+62.985), 0.100−a−x),
point Br (0.0, (3.8a−167.84) r2+(−3.8a+155.94) r+(−1.025a+60.895), 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines GI, IAr, and ArBr (excluding point G, point I, point Ar, and point Br).

### Claim 4

A composition comprising a refrigerant,
the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroethylene (HFO-1123), 1,3,3,3-tetrafluoropropene (R1234ze), difluoromethane (R32), and 2,3,3,3-tetrafluoro-1-propene (R1234yf), wherein
when the mass % of HFO-1132 (E), HFO-1123, R1234yf, R1234ze, and R32 based on their sum in the refrigerant is respectively x, y, z1, z2, and a, the sum of z1 and z2 is z, z1/z is r, and v=−0.0581a+2.5484,
if 0<a≤11.1, coordinates (x,y,z) in a ternary composition diagram whose vertices are a point of (100−a) mass % of HFO-1132 (E), a point of (100−a) mass % of HFO-1123, and a point of (100−a) mass % of the sum of R1234yf and R1234ze are within the range of a figure surrounded by straight lines JKr, KrBr, BrDr, DrC, and CJ that connect the following 5 points:
point J (−0.0072a2−0.8296a+47.1, 100−a−x, 0.0),
point Kr ((−0.0241a2+0.4296a−2.8) r2+(0.033a2−0.6279a+2.0) r+(0.0421a2−2.2419a+62.5), (0.0142a2−0.3016a+1.4) r2+ (−0.0167a2+0.2395a−7.9) r+(−0.0289a2+0.4739a+12.4), 100−a−x−y),
point Br (0.0, 12+(0.004a2−0.1343a−9.1) r+(0.008a2−1.4765a+68.8), 100−a−y),
point Dr (0.0, (−0.0603a2+0.8857a−2.4) r2+(0.1143a2−0.9267a−3.8) r+(0.0079a2+0.1471x+86.3), 100−a−y),
point C (−0.189a2−0.8664a+32.9, 100−a−x, 0.0),
or on the straight lines JKr, KrBr, BrDr, and DrC (excluding point J, point Br, point Dr, and point C);
if 11.1<a≤26.6, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines JKr, KrBr, BrO, and OJ that connect the following 4 points:
point J (0.0285a2−1.5371a+50.557, 100−a−x, 0.0),
point Kr ((0.0556a2−2.057a+14.984) r2+(−0.0217a2+0.7843a−6.9374) r+(0.0184a2−1.7325a+59.763), (0.0567a2−2.162a+16.817) r2+ (−0.0298a2+1.0456a−15.236) r+(−0.0094a2+0.0329a+14.897), 100−a−x−y),
point Br (0.0, (0.0839a2−3.138a+23.492) r2+(−0.0396a2+1.4292a−21.082) r+(0.0057a2−1.4197a+68.462), 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines JKr and KrBr (excluding point J and point Br);
if 26.6<a≤35.3, and 0<r≤v, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines JKr, KrBr, BrO, and OJ that connect the following 4 points:
point J (−0.00542a2+0.3598a+24.08, 100−a−x, 0.0),
point Kr ((−0.2299a+5.7149) r2+(0.1379a−5.069) r+(−0.7011x+45.351), (0.069a−2.4345) r2+(−0.1264a−5.1368) r+(−0.4943a+22.247), 100−a−x−y),
point Br (0.0, (−0.00279a2+0.1483a−2.5871) r2+(0.00277a2−0.1588a−8.822) r+(0.00327a2−1.3169a+67.421), 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines JKr and KrBr (excluding point J and point Br);
if 26.6<a≤35.3, and v<r≤1, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines JKr, KrAr, ArBr, BrO, and OJ that connect the following 5 points:
point J (−0.00542a2+0.3598a+24.08, 0.0, 100−a−x),
point Kr ((−0.3218a+8.1609) r2+(1.4023a−38.701) r+(−1.3103a+61.555), 0.0, 100−a−x),
point Ar ((−0.00946a2+0.6769a−13.119) r2+(0.01143a2−0.846a+4.9102) r+(0.00584a2−1.5915a+74.4), 0.0, 100−a−x),
point Br (0.0, (−0.00279a2+0.1483a−2.5871) r2+(0.00277a2−0.1588a−8.822) r+(0.00327a2−1.3169a+67.421), 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines JKr, KrAr, and ArBr (excluding point J, point Ar, and point Br);
if 35.3<a≤43.8, and 0<r≤v, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines JKr, KrBr, BrO, and OJ that connect the following 4 points:
point J (−0.00542a2+0.3598a+24.08, 100−a−x, 0.0),
point Kr ((0.2824a−12.367) r2+(0.0235a−1.0306) r+(−0.5529a+40.119), (1.1294a−49.468) r+(−0.5647a+24.734), 100−a−x−y),
point Br (0.0, (−0.00279a2+0.1483a−2.5871) r2+(0.00277a2−0.1588a−8.822) r+(0.00327a2−1.3169a+67.421), 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines JKr and KrBr (excluding point J and point Br);
if 35.3<a≤43.8, and v<r≤1, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines JKr, KrAr, ArBr, BrO, and OJ that connect the following 5 points:
point J (−0.00542a2+0.3598a+24.08, 100−a−x, 0.0),
point Kr ((0.2588a−12.336) r2+(−0.5294a+29.488) r+(0.0706a+12.808), 0.0, 100−a−x)),
point Ar ((−0.00946a2+0.6769a−13.119) r2+(0.01143a2−0.846a+4.9102) r+(0.00584a2−1.5915a+74.4), 0.0, 100−a−x),
point Br (0.0, (−0.00279a2+0.1483a−2.5871) r2+(0.00277a2−0.1588a−8.822) r+(0.00327a2−1.3169a+67.421), 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines JKr, KrAr, and ArBr (excluding point J, point Ar, and point Br); and
if 43.8<a≤47.8, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines JKr, KrAr, ArBr, BrO, and OJ that connect the following 5 points:
point J (−0.1a+33.78, 100−a−x, 0.0),
point Kr (−r2+(−0.2a+15.06) r+15.9, 0.0, 100−a−x),
point Ar (−1.6r2+(0.05a−12.39) r+(−1.075a+62.985), 0.0, 100−a−x),
point Br (0.0, (3.8a−167.84) r2+(−3.8a+155.94) r+(−1.025a+60.895), 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines JKr, KrAr, and ArBr (excluding point J, point Ar, and point Br).

### Claim 5 (depends on 1)

A refrigerating machine comprising the composition according to claim 1 as a working fluid.

### Claim 6 (depends on 1)

A method for operating a refrigerating machine, comprising the step of circulating the composition according to claim 1 as a working fluid in a refrigerating machine.

### Claim 7 (depends on 1)

A method for operating a refrigerating machine, comprising the step of circulating the composition according to claim 1 as a working fluid in a refrigerating machine, wherein the composition is an alternative refrigerant for R410A.

### Claim 8 (depends on 2)

A refrigerating machine comprising the composition according to claim 2 as a working fluid.

### Claim 9 (depends on 2)

A method for operating a refrigerating machine, comprising the step of circulating the composition according to claim 2 as a working fluid in a refrigerating machine.

### Claim 10 (depends on 2)

A method for operating a refrigerating machine, comprising the step of circulating the composition according to claim 2 as a working fluid in a refrigerating machine, wherein the composition is an alternative refrigerant for R410A.

### Claim 11 (depends on 3)

A refrigerating machine comprising the composition according to claim 3 as a working fluid.

### Claim 12 (depends on 3)

A method for operating a refrigerating machine, comprising the step of circulating the composition according to claim 3 as a working fluid in a refrigerating machine.

### Claim 13 (depends on 3)

A method for operating a refrigerating machine, comprising the step of circulating the composition according to claim 3 as a working fluid in a refrigerating machine, wherein the composition is an alternative refrigerant for R410A.

### Claim 14 (depends on 4)

A refrigerating machine comprising the composition according to claim 4 as a working fluid.

### Claim 15 (depends on 4)

A method for operating a refrigerating machine, comprising the step of circulating the composition according to claim 4 as a working fluid in a refrigerating machine.

### Claim 16 (depends on 4)

A method for operating a refrigerating machine, comprising the step of circulating the composition according to claim 4 as a working fluid in a refrigerating machine, wherein the composition is an alternative refrigerant for R410A.