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EP-3992546-B1 - COMPOSITION INCLUDING REFRIGERANT, USE THEREOF, REFRIGERATOR HAVING SAME, AND METHOD FOR OPERATING SAID REFRIGERATOR

EP3992546B1EP 3992546 B1EP3992546 B1EP 3992546B1EP-3992546-B1

Inventors

  • ITANO, MITSUSHI
  • OHKUBO, Shun
  • KARUBE, DAISUKE
  • TOKUNO, SATOSHI

Dates

Publication Date
20260506
Application Date
20200619

Claims (5)

  1. A composition comprising a refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), 1,1-difluoroethylene (HFO-1132a), 2,3,3,3-tetrafluoro-1-propene (R1234yf), and difluoromethane (R32), wherein in the refrigerant, when the mass% of HFO-1132(E), HFO-1132a, R1234yf, and R32 based on their sum is respectively represented by x, y, z, and a, coordinates (x,y,z) in a ternary composition diagram in which the sum of HFO-1132(E), HFO-1132a, and R1234yf is (100-a) mass% are within the range of if 0<a≤10.0: a figure surrounded by straight lines OC, CD, DE, EF, and FO that connect the following 5 points, or on the straight lines CD, DE, and EF (excluding the points O, C, and F): O (100-a, 0.0, 0.0), C (0.012a 2 -1.96a+68.6, 0.0, -0.012a 2 +0.96a+31.4), D (0.012a 2 -1.88a+63.2, 1.5, -0.012a 2 +0.88a+35.3), E (-0.002a 2 -1.41a+58.6, 0.004a 2 -0.14a+2.9, -0.002a 2 +0.55a+38.5), and F (-0.014a 2 -1.21a+91.9, 0.014a 2 +0.21a+8.1, 0.0); if 10.0<a≤15.3: a figure surrounded by straight lines OC, CD, DE, EF, and FO that connect the following 5 points, or on the straight lines CD, DE, and EF (excluding the points O, C, and F): O (100-a, 0.0, 0.0), C (0.0104a 2 -1.9043a+68.204, 0.0, -0.0104a 2 +0.9043a+31.796), D (-1.6038a+61.638, 1.5, 0.6038a+36.862), E (-0.0024a 2 -1.2979a+57.519, 0.0038a 2 -0.1718a+3.2373, -0.0014a 2 +0.4697a+39.2437), and F (0.0046a 2 -1.2626a+76.983, -0.0046a 2 +0.2626a+23.017, 0.0); if 15.3<a≤23.0: a figure surrounded by straight lines OC, CE, EH, HJ, JF, and FO that connect the following 6 points, or on the straight lines CE, EH, HJ, and JF (excluding the points O, C, and F): O (100-a, 0.0, 0.0), C (0.0104a 2 -1.9043a+68.204, 0.0, -0.0104a 2 +0.9043a+31.796), E (-0.0024a 2 -1.2979a+57.519, 0.0038a 2 -0.1718a+3.2373, -0.0014a 2 +0.4697a+39.2437), H (-0.0205a 2 -0.4995a+49.548, 1.5, 0.0205a 2 -0.5005a+48.952), J (-2.026a+99.597, -0.2338a+19.677, 1.2598a-19.274), and F (0.0046a 2 -1.2626a+76.983, -0.0046a 2 +0.2626a+23.017, 0.0); if 23.0<a≤30.0: a figure surrounded by straight lines OC, CE, EH, HJ, JF, and FO that connect the following 6 points, or on the straight lines CE, EH, HJ, and JF (excluding the points O, C, and F): O (100-a, 0.0, 0.0), C (0.0089a 2 -1.8282a+67.247, 0.0, -0.0089a 2 +0.8282a+32.753), E (-0.0053a 2 -1.1031a+54.592, 0.0057a 2 -0.2755a+4.6013, -0.0004a 2 +0.3786a+40.8067), H (-0.0226a 2 -0.3009a+46.089, 1.5, 0.0226a 2 -0.6991a+52.411), J (0.0037a 2 -1.8827a+94.336, -0.0117a 2 +0.4781a+9.5015, 0.008a 2 +0.4046a-3.8375), and F (-0.0026a 2 -0.5259a+58.197, 0.0026a 2 -0.4741a+41.803, 0.0); if 30.0<a≤33.4: a figure surrounded by straight lines OC, CD, DE, EJ, JF, and FO that connect the following 6 points, or on the straight lines CD, DE, EJ, and JF (excluding the points O, C, and F): O (100-a, 0.0, 0.0), C (0.0089a 2 -1.8282a+67.247, 0.0, -0.0089a 2 +0.8282a+32.753), D (0.0098a 2 -1.8547a+63.548, 1.5, -0.0098a 2 +0.8547a+34.952), E (-0.0053a 2 -1.1031a+54.592, 0.0057a 2 -0.2755a+4.6013, -0.0004a 2 +0.3786a+40.8067), J (0.0037a 2 -1.8827a+94.336, -0.0117a 2 +0.4781a+9.5015, 0.008a 2 +0.4046a-3.8375), and F (-0.0026a 2 -0.5259a+58.197, 0.0026a 2 -0.4741a+41.803, 0.0); if 33.4<a≤41.7: a figure surrounded by straight lines OC, CD, DE, EJ, JF, and FO that connect the following 6 points, or on the straight lines CD, DE, EJ, and JF (excluding the points O, C, and F): O (100-a, 0.0, 0.0), C (0.0092a 2 -1.8594a+67.944, 0.0, -0.0092a 2 +0.8594a+32.056), D (0.0098a 2 -1.8547a+63.548, 1.5, -0.0098a 2 +0.8547a+34.952), E (-0.00908a 2 -0.7415a+46.67, 0.00793a 2 -0.4513a+8.0212, 0.00115a 2 +0.1928a+45.3088), J (0.00673a 2 -1.8435a+89.655, 0.00347a 2 -0.2223a+15.9846, -0.0102a 2 +1.0658a-5.6396), and F (0.02462a 2 -2.9592a+112.85, -0.02462a 2 +1.9592a-12.85, 0.0); if 41.7<a≤44.7: a figure surrounded by straight lines OC, CD, DI, IJ, JF, and FO that connect the following 6 points, or on the straight lines CD, DI, IJ, and JF (excluding the points O, I, C, and F) : O (100-a, 0.0, 0.0), C (0.00562a 2 -1.554a+61.394, 0.0, -0.00562a 2 +0.554a+38.606), D (0.0098a 2 -1.8547a+63.548, 1.5, -0.0098a 2 +0.8547a+34.952), I (-0.0025a 2 +0.6799a-20.96, 0.0, 0.0025a 2 -1.6799a+120.96), J (0.0224a 2 -3.1675a+117.66, 0.0155a 2 -1.2736a+38.833, -0.0379a 2 +3.4411a-56.493), and F (0.0193a 2 -2.5362a+104.46, -0.0193a 2 +1.5362a-4.46, 0.0); if 44.7<a≤47.8: a figure surrounded by straight lines OC, CE, EI, IJ, JF, and FO that connect the following 6 points, or on the straight lines CE, IJ, and JF (excluding the points O, E, C, and F): O (100-a, 0.0, 0.0), C (0.00562a 2 -1.554a+61.394, 0.0, -0.00562a 2 +0.554a+38.606), E (0.0, 0.00263a 2 -0.7285a+28.779, -0.00263a 2 -0.2715a+71.221), I (-0.0025a 2 +0.6799a-20.96, 0.0, 0.0025a 2 -1.6799a+120.96), J (0.0224a 2 -3.1675a+117.66, 0.0155a 2 -1.2736a+38.833, - 0.0379a 2 +3.4411a-56.493), and F (0.0193a 2 -2.5362a+104.46, -0.0193a 2 +1.5362a-4.46, 0.0); if 47.8<a≤62.9: a figure surrounded by straight lines OP, PI, IJ, JF, and FO that connect the following 5 points, or on the straight lines IJ and JF (excluding the points O, P, I, and F): O (100-a, 0.0, 0.0), P (0, 0, 100-a), I (-0.01111a 2 +1.8721a-58.3, 0.0, 0.01111a 2 -2.8721a+158.3), J (-1.1523a+72.481, 0.1391a+6.7523, 0.0132a+20.7667), and F (0.0013a 2 -0.9614a+70.124, -0.0013a 2 -0.0386a+29.876, 0.0); or if 62.9<a≤74.0: a figure surrounded by straight lines OP, PI, IF, and FO that connect the following 4 points, or on the straight line IF (excluding the points O, P, I, and F): O (100-a, 0.0, 0.0), P (0, 0, 100-a), I (-0.01111a 2 +1.8721a-58.3, 0.0, 0.01111a 2 -2.8721a+158.3), and F (0.0013a 2 -0.9614a+70.124, -0.0013a 2 -0.0386a+29.876, 0.0).
  2. The composition of claim 1, for use as a working fluid for a refrigerating machine, wherein the composition further comprises a refrigeration oil.
  3. Use of the composition of claim 1 or 2 as an alternative refrigerant for R410A.
  4. A refrigerating machine comprising the composition of claim 1 or 2 as a working fluid.
  5. A method for operating a refrigerating machine, comprising circulating the composition of claim 1 or 2 as a working fluid in a refrigerating machine.

Description

Technical Field The present disclosure relates to a composition comprising a refrigerant, use of the composition, a refrigerating machine having the composition, and a method for operating the refrigerating machine. Background Art R410A is currently used as an air conditioning refrigerant for home air conditioners etc. R410A is a two-component mixed refrigerant of difluoromethane (CH2F2: HFC-32 or R32) and pentafluoroethane (C2HF5: HFC-125 or R125), and is a pseudo-azeotropic composition. However, the global warming potential (GWP) of R410A is 2088. Due to growing concerns about global warming, R32, which has a GWP of 675, has been increasingly used. For this reason, various low-GWP mixed refrigerants that can replace R410A have been proposed (WO 2015/141678). JP-A-2015-229767 discloses an actuation medium for heat cycle containing (E)1,2-difluoroethylene (HFO-1132(E)) and at least one first compound selected from 1,1-difluoroethylene (HFO-1132a), fluoroethylene (HFO-1141), fluoroethane (HFC-161), (Z)-1,2-difluoroethylene (HFO-1132(Z)) and ethylene, wherein the ratio of the total content of the first compound to the total amount of the actuation medium is < 1.5 mass%. Summary of Invention Technical Problem An object of the present disclosure is to provide a novel low-GWP mixed refrigerant. Solution to Problem The present invention provides a composition (also referred to as "the present refrigerant composition" herein) comprising a refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), 1,1-difluoroethylene (HFO-1132a), 2,3,3,3-tetrafluoro-1-propene (R1234yf), and difluoromethane (R32), wherein in the refrigerant, when the mass% of HFO-1132(E), HFO-1132a, R1234yf, and R32 based on their sum is respectively represented by x, y, z, and a, coordinates (x,y,z) in a ternary composition diagram in which the sum of HFO-1132(E), HFO-1132a, and R1234yf is (100-a) mass% are within the range of if 0<a≤10.0: a figure surrounded by straight lines OC, CD, DE, EF, and FO that connect the following 5 points, or on the straight lines CD, DE, and EF (excluding the points O, C, and F): O(100-a, 0.0, 0.0),C(0.012a2-1.96a+68.6, 0.0, -0.012a2+0.96a+31.4),D(0.012a2-1.88a+63.2, 1.5, -0.012a2+0.88a+35.3),E(-0.002a2-1.41a+58.6, 0.004a2-0.14a+2.9, -0.002a2+0.55a+38.5), andF(-0.014a2-1.21a+91.9, 0.014a2+0.21a+8.1, 0.0); if 10.0<a≤15.3: a figure surrounded by straight lines OC, CD, DE, EF, and FO that connect the following 5 points, or on the straight lines CD, DE, and EF (excluding the points O, C, and F): O(100-a, 0.0, 0.0),C(0.0104a2-1.9043a+68.204, 0.0, -0.0104a2+0.9043a+31.796),D(-1.6038a+61.638, 1.5, 0.6038a+36.862),E(-0.0024a2-1.2979a+57.519, 0.0038a2-0.1718a+3.2373, -0.0014a2+0.4697a+39.2437), andF(0.0046a2-1.2626a+76.983, -0.0046a2+0.2626a+23.017, 0.0); if 15.3<a≤23.0: a figure surrounded by straight lines OC, CE, EH, HJ, JF, and FO that connect the following 6 points, or on the straight lines CE, EH, HJ, and JF (excluding the points O, C, and F): O(100-a, 0.0, 0.0),C(0.0104a2-1.9043a+68.204, 0.0, -0.0104a2+0.9043a+31.796),E(-0.0024a2-1.2979a+57.519, 0.0038a2-0.1718a+3.2373, -0.0014a2+0.4697a+39.2437),H(-0.0205a2-0.4995a+49.548, 1.5, 0.0205a2-0.5005a+48.952),J(-2.026a+99.597, -0.2338a+19.677, 1.2598a-19.274), andF(0.0046a2-1.2626a+76.983, -0.0046a2+0.2626a+23.017, 0.0); if 23.0<a≤30.0: a figure surrounded by straight lines OC, CE, EH, HJ, JF, and FO that connect the following 6 points, or on the straight lines CE, EH, HJ, and JF (excluding the points O, C, and F): O(100-a, 0.0, 0.0),C(0.0089a2-1.8282a+67.247, 0.0, -0.0089a2+0.8282a+32.753),E(-0.0053a2-1.1031a+54.592, 0.0057a2-0.2755a+4.6013, -0.0004a2+0.3786a+40.8067),H(-0.0226a2-0.3009a+46.089, 1.5, 0.0226a2-0.6991a+52.411),J(0.0037a2-1.8827a+94.336, -0.0117a2+0.4781a+9.5015, 0.008a2+0.4046a-3.8375), andF(-0.0026a2-0.5259a+58.197, 0.0026a2-0.4741a+41.803, 0.0); if 30.0<a≤33.4: a figure surrounded by straight lines OC, CD, DE, EJ, JF, and FO that connect the following 6 points, or on the straight lines CD, DE, EJ, and JF (excluding the points O, C, and F): O(100-a, 0.0, 0.0),C(0.0089a2-1.8282a+67.247, 0.0, -0.0089a2+0.8282a+32.753),D(0.0098a2-1.8547a+63.548, 1.5, -0.0098a2+0.8547a+34.952),E(-0.0053a2-1.1031a+54.592, 0.0057a2-0.2755a+4.6013, -0.0004a2+0.3786a+40.8067),J(0.0037a2-1.8827a+94.336, -0.0117a2+0.4781a+9.5015, 0.008a2+0.4046a-3.8375), andF(-0.0026a2-0.5259a+58.197, 0.0026a2-0.4741a+41.803, 0.0); if 33.4<a≤41.7: a figure surrounded by straight lines OC, CD, DE, EJ, JF, and FO that connect the following 6 points, or on the straight lines CD, DE, EJ, and JF (excluding the points O, C, and F): O(100-a, 0.0, 0.0),C(0.0092a2-1.8594a+67.944, 0.0, -0.0092a2+0.8594a+32.056),D(0.0098a2-1.8547a+63.548, 1.5, -0.0098a2+0.8547a+34.952),E(-0.00908a2-0.7415a+46.67, 0.00793a2-0.4513a+8.0212, 0.00115a2+0.1928a+45.3088),J(0.00673a2-1.8435a+89.655, 0.00347a2-0.2223a+15.9846, -0.0102a2+1.0658a-5.6396), andF(0.02462a2-2.9592a+112.85, -0.02462a2+1.9592a-12.85, 0.0); if 41.7<a≤44.7