Refrigeration device

Abstract

The present application relates to a refrigeration apparatus. In a refrigeration cycle apparatus that performs a refrigeration cycle using a refrigerant having a small GWP, a refrigerant circuit (10) having a compressor (21), a condenser (23), a pressure-reducing portion (24), and an evaporator (31), and a prescribed refrigerant having a small GWP enclosed in the refrigerant circuit (10) are provided.

Claims

1. A refrigeration device (100, 500) includes a first cycle (RC, 510) and a second cycle (HC, 520). The first cycle (RC, 510) connects a first compressor (11, 511), a first radiator (14, 512), a first expansion mechanism (31, 513), and a first heat absorber (RP, 514). In the first cycle (RC, 510), a first refrigerant circulates. The second cycle (HC, 520) connects a second radiator (HP, 523) and a second heat absorber (60, 527). In the second cycle (HC, 520), a second refrigerant circulates. The first heat absorber (RP, 514) and the second radiator (HP, 523) are heat exchangers (33, 531) that effect heat exchange between the first refrigerant flowing in the first heat absorber (RP, 514) and the second refrigerant flowing in the second radiator (HP, 523). At least one of the first refrigerant and the second refrigerant is a first refrigerant. The first refrigerant contains CO2, trans-1,2-difluoroethylene (HFO-1132(E)), difluoromethane (R32), and 2,3,3,3-tetrafluoro-1-propene (R1234yf). When the mass percentages of CO2, R32, HFO-1132(E), and R1234yf based on their total are set as w, x, y, and z respectively, in a ternary composition diagram where the total of R32, HFO-1132(E), and R1234yf is (100 - w) mass%, When 0 < w ≤ 1.2, the coordinates (x, y, z) are within the range excluding the points on point I(0.0, 72.0, 28.0 - w) point J(18.3, 48.5, 33.2 - w) point K(36.8, 35.6, 27.6 - w) point L(51.7, 28.9, 19.4 - w) Point B’’(-1.5278w 2 +2.75w + 50.5, 0.0, 1.5278w 2 -3.75w + 49.5) point D(-2.9167w + 40.317, 0.0, 1.9167w + 59.683) point C(0.0, -4.9167w + 58.317, 3.9167w + 41.683) Within the area or line segment enclosed by the curves IJ, JK, and KL formed by connecting these 7 points, and the lines LB'', B''D, DC, and CI, where, except for the points on the straight line B’’D and the straight line CI. When 1.2 < w ≤ 4.0, the coordinates (x, y, z) are within the range excluding the points on point I(0.0, 72.0, 28.0 - w) point J(18.3, 48.5, 33.2 - w) point K(36.8, 35.6, 27.6 - w) point L(51.7, 28.9, 19.4 - w) point B’’(51.6, 0.0, 48.4 - w) point D(-2.8226w + 40.211, 0.0, 1.8226w + 59.789) Point C(0.0, 0.1081w) 2 -5.169w +58.447, -0.1081w 2 +4.169w +41.553) within the range of the figure enclosed by the curves IJ, JK, and KL formed by connecting these 7 points respectively, as well as the straight lines LB'', B''D, DC, and CI, and on the said line segments, excluding the points on the straight lines B''D and CI, When 4.0 < w ≤ 7.0, the coordinates (x, y, z) are in the point I(0.0, 72.0, 28.0 - w) point J(18.3, 48.5, 33.2 - w) point K(36.8, 35.6, 27.6 - w) point L(51.7, 28.9, 19.4 - w) point B''(51.6, 0.0, 48.4 - w) point D(-2.8w + 40.1, 0.0, 1.8w + 59.9) Point C(0.0, 0.0667w) 2 -4.9667w +58.3, -0.0667w 2 +3.9667w+41.7) within the range of the figure enclosed by the curves IJ, JK, and KL formed by connecting these 7 points respectively, as well as the straight lines LB'', B''D, DC, and CI, and on the said line segments, excluding the points on the straight lines B''D and CI, and The curve IJ is represented by Coordinates (x, 0.0236x) 2 -1.716x+72, -0.0236x 2 +0.716x+28-w) as shown, The curve JK is represented by Coordinates (x, 0.0095x) 2 -1.2222x + 67.676, -0.0095x 2 +0.2222x+32.324-w) as shown, The curve KL is represented by Coordinates (x, 0.0049x) 2 -0.8842x+61.488, -0.0049x 2 -0.1158x+38.512) as shown; or When the mass percentages of CO2, R32, HFO - 1132(E), and R1234yf based on their total are set as w, x, y, and z respectively, in the ternary composition diagram where the total of R32, HFO - 1132(E), and R1234yf is (100 - w) mass%, When 0 < w ≤ 1.2, the coordinates (x, y, z) are in the point I(0.0, 72.0, 28.0 - w) point J(18.3, 48.5, 33.2 - w) point K(36.8, 35.6, 27.6 - w) point F(-0.0833w + 36.717, -4.0833w + 5.1833, 3.1666w + 58.0997) point C(0.0, -4.9167w + 58.317, 3.9167w + 41.683) within the range of the figure enclosed by the curves IJ and JK formed by connecting these 5 points respectively, as well as the straight lines KF, FC, and CI, and on the said line segments, excluding the points on the straight line CI, When 1.2 < w ≤ 1.3, the coordinates (x, y, z) are in the point I(0.0, 72.0, 28.0 - w) point J(18.3, 48.5, 33.2 - w) point K(36.8, 35.6, 27.6 - w) point F(36.6, -3w + 3.9, 2w + 59.5) Point C(0.0, 0.1081w) 2 -5.169w +58.447, -0.1081w 2 +4.169w +41.553) within the range of the figure enclosed by the curves IJ and JK formed by connecting these 5 points respectively, as well as the straight lines KF, FC, and CI, and on the said line segments, excluding the points on the straight line CI, When 1.3 < w ≤ 4.0, the coordinates (x, y, z) are in the point I(0.0, 72.0, 28.0 - w) point J(18.3, 48.5, 33.2 - w) point K(36.8, 35.6, 27.6 - w) Point B’(36.6, 0.0, -w + 63.4) Point D(-2.8226w + 40.211, 0.0, 1.8226w + 59.789) Point C(0.0, 0.1081w) 2 -5.169w +58.447, -0.1081w 2 +4.169w +41.553) within the range of the figure surrounded by the curves IJ and JK formed by connecting these 6 points respectively, and the straight lines KB’, B’D, DC, and CI, or on the said line segments, excluding the points on the straight line CI When 4.0 < w ≤ 7.0, the coordinates (x, y, z) are in the range obtained by Point I(0.0, 72.0, 28.0 - w) Point J(18.3, 48.5, 33.2 - w) Point K(36.8, 35.6, 27.6 - w) Point B’(36.6, 0.0, -w + 63.4) Point D(-2.8w + 40.1, 0.0, 1.8w + 59.9) Point C(0.0, 0.0667w) 2 -4.9667w +58.3, -0.0667w 2 +3.9667w+41.7) within the range of the figure surrounded by the curves IJ and JK formed by connecting these 6 points respectively, and the straight lines KB’, B’D, DC, and CI, or on the said line segments, excluding the points on the straight line CI, and the curve IJ is represented by Coordinates (x, 0.0236x) 2 -1.716x+72, -0.0236x 2 +0.716x+28-w) as indicated The curve JK is represented by Coordinates (x, 0.0095x) 2 -1.2222x + 67.676, -0.0095x 2 +0.2222x+32.324-w) as indicated; or When the mass percentages of CO2, R32, HFO - 1132(E), and R1234yf based on their total are set as w, x, y, and z respectively, in the ternary composition diagram where the total of R32, HFO - 1132(E), and R1234yf is (100 - w) mass%, When 0 < w ≤ 0.6, the coordinates (x, y, z) are in the range obtained by Point G(-5.8333w) 2 -3.1667w +22.2, 7.0833w 2 +1.4167w +26.2, -1.25w 2 +0.75w+51.6) Point O(36.8, 0.8333w 2 +1.8333w+22.6, -0.8333w 2 -2.8333w+40.6) Point P(51.7, 1.1111w) 2 +20.5, -1.1111w 2 -w+27.8) Point B’’(-1.5278w 2 +2.75w + 50.5, 0.0, 1.5278w 2 -3.75w + 49.5) Point D(-2.9167w + 40.317, 0.0, 1.9167w + 59.683) within the range of the figure surrounded by the curves GO and OP formed by connecting these 5 points respectively, and the straight lines PB’’, B’’D, and DG, or on the said line segments, excluding the points on the straight line B’’D When 0.6 < w ≤ 1.2, the coordinates (x, y, z) are in the range obtained by Point G(-5.8333w) 2 -3.1667w +22.2, 7.0833w 2 +1.4167w +26.2, -1.25w 2 +0.75w+51.6) Point N(18.2, 0.2778w) 2 +3w +27.7, -0.2778w 2 -4w+54.1) Point O(36.8, 0.8333w 2 +1.8333w+22.6, -0.8333w 2 -2.8333w+40.6) Point P(51.7, 1.1111w) 2 +20.5, -1.1111w 2 -w+27.8) Point B’’(-1.5278w 2 +2.75w + 50.5, 0.0, 1.5278w 2 -3.75w + 49.5) Point D(-2.9167w + 40.317, 0.0, 1.9167w + 59.683) within the range of the figure surrounded by the curves GN, NO, and OP formed by connecting these 6 points respectively, and the straight lines PB’’, B’’D, and DG, or on the said line segments, excluding the points on the straight line B’’D And The curve GO is represented by Coordinates (x, (0.00487w) 2 -0.0059w+0.0072)x 2 +(-0.279w 2 +0.2844w-0.6701)x+3.7639w 2 -0.2467w+37.512, 100-wxy) as indicated The curve GN is represented by Coordinates (x, (0.0122w) 2 -0.0113w+0.0313)x 2 +(-0.3582w 2 +0.1624w-1.4551)x+2.7889w 2 +3.7417w+43.824 , 100-wxy) as indicated The curve NO is represented by Coordinates (x, (0.00487w) 2 -0.0059w+0.0072)x 2 +(-0.279w 2 +0.2844w-0.6701)x+3.7639w 2 -0.2467w+37.512, 100-wxy) as indicated The curve OP is represented by Coordinates (x, (0.0074w) 2 -0.0133w+0.0064)x 2 +(-0.5839w 2 +1.0268w-0.7103)x+11.472w 2 -17.455w+40.07, 100-wxy) as indicated When 1.2 < w ≤ 4.0, the coordinates (x, y, z) are in the range obtained by Point M(0.0, -0.3004w) 2 +2.419w +55.53, 0.3004w 2 -3.419w +44.47) Point W(10.0, -0.3645w) 2 +3.5024w +44.422, 0.3645w 2 -4.5024w +55.578) Point N(18.2, -0.3773w 2 +3.319w+28.26, 0.3773w 2 -4.319w+53.54) Point O(36.8, -0.1392w) 2 +1.4381w +24.475, 0.1392w 2 -2.4381w+38.725) Point P(51.7, -0.2381w) 2 +1.881w +20.186, 0.2381w 2 -2.881w +28.114) Point B’’(51.6, 0.0, -w + 48.4) Point D(-2.8226w + 40.211, 0.0, 1.8226w + 59.789) Point C(0.0, 0.1081w) 2 -5.169w +58.447, -0.1081w 2 +4.169w +41.553) within or on the line segments of the figure enclosed by the curves MW, WN, NO, and OP formed by connecting these 8 points respectively, and the straight lines PB'', B''D, DC, and CM, excluding the points on the straight lines B''D and CM, and The curve MW is formed by Coordinates (x, (0.0043w) 2 -0.0359w+0.1509)x 2 +(-0.0493w 2 +0.4669w-3.6193)x-0.3004w 2 +2.419w+55.53, 100-wxy) as represented by The curve WN is formed by Coordinates (x, (0.0055w) 2 -0.0326w+0.0665)x 2 +(-0.1571w 2 +0.8981w-2.6274)x+0.6555w 2 -2.2153w+54.044, 100-wxy) as represented by The curve NO is formed by Coordinates (x, (-0.00062w) 2 +0.0036w+0.0037)x 2 +(0.0375w 2 -0.239w-0.4977)x-0.8575w 2 +6.4941w+36.078, 100-wxy) as represented by The curve OP is formed by Coordinates (x, (-0.000463w) 2 +0.0024w-0.0011)x 2 +(0.0457w 2 -0.2581w-0.075)x-1.355w 2 +8.749w +27.096, 100-wxy) as represented by When 4.0 < w ≤ 7.0, the coordinates (x, y, z) are within or on the line segments of the figure enclosed by the curves MW, WN, NO, and OP formed by connecting these 8 points respectively, and the straight lines PB'', B''D, DC, and CM, excluding the points on the straight lines B''D and CM, and Point M(0.0, -0.0667w) 2 +0.8333w +58.133, 0.0667w 2 -1.8333w +41.867) Point W(10.0, -0.0667w) 2 +1.1w +39.267, 0.0667w 2 -2.1w+50.733) Point N(18.2, -0.0889w) 2 +1.3778w +31.411, 0.0889w 2 -2.3778w+50.389) Point O(36.8, -0.0444w) 2 +0.6889w +25.956, 0.0444w 2 -1.6889w+37.244) Point P(51.7, -0.0667w) 2 +0.8333w +21.633, 0.0667w 2 -1.8333w + 26.667) Point B''(51.6, 0.0, -w + 48.4) Point D(-2.8w + 40.1, 0.0, 1.8w + 59.9) Point C(0.0, 0.0667w) 2 -4.9667w +58.3, -0.0667w 2 +3.9667w+41.7) within or on the line segments of the figure enclosed by the curves MW, WN, NO, and OP formed by connecting these 8 points respectively, and the straight lines PB'', B''D, DC, and CM, excluding the points on the straight lines B''D and CM, and The curve MW is formed by Coordinates (x, (0.00357w) 2 -0.0391w+0.1756)x 2 +(-0.0356w 2 +0.4178w-3.6422)x-0.0667w 2 +0.8333w+58.103, 100-wxy) as represented by The curve WN is formed by Coordinates (x, (-0.002061w) 2 +0.0218w-0.0301)x 2 +(0.0556w 2 -0.5821w-0.1108)x-0.4158w 2 +4.7352w+43.383, 100-wxy) as represented by The curve NO is formed by Coordinates (x, 0.0082x) 2 +(0.0022w 2 -0.0345w-0.7521)x-0.1307w 2 +2.0247w+42.327, 100-wxy) as represented by The curve OP is formed by Coordinates (x, (-0.0006258w) 2 +0.0066w-0.0153)x 2 +(0.0516w 2 -0.5478w + 0.9894) x - 1.074w 2 +11.651w +10.992, 100-wxy) as represented by; or When the mass percentages of CO2, R32, HFO - 1132(E), and R1234yf based on their total are set as w, x, y, and z respectively, in the ternary composition diagram where the total of R32, HFO - 1132(E), and R1234yf is (100 - w) mass%, When 0 < w ≤ 0. Point G(-5.8333w) 2 -3.1667w +22.2, 7.0833w 2 -1.4167w +26.2, -1.25w 2 +3.5834w+51.6) Point O(36.8, 0.8333w 2 +1.8333w + 22.6, -0.8333w 2 -2.8333w + 40.6) ​ ​ ​ Coordinates (x, (0.00487w) 2 -0.0059w+0.0072)x 2 +(-0.279w 2 +0.2844w-0.6701)x+3.7639w 2 -0.2467w+37.512, 100-wxy) ​ ​ Point G(-5.8333w) 2 -3.1667w +22.2, 7.0833w 2 -1.4167w +26.2, -1.25w 2 +3.5834w+51.6) Point N(18.2, 0.2778w) 2 +3.0w +27.7, -0.2778w 2 -4.0w +54.1) Point O(36.8, 0.8333w 2 +1.8333w + 22.6, -0.8333w 2 -2.8333w + 40.6) ​ ​ ​ Coordinates (x, (0.0122w) 2 -0.0113w+0.0313)x 2 +(-0.3582w 2 +0.1624w-1.4551)x+2.7889w 2 +3.7417w+43.824 , 100-wxy) ​ ​ Coordinates (x, (0.00487w) 2 -0.0059w+0.0072)x 2 +(-0.279w 2 +0.2844w-0.6701)x+3.7639w 2 -0.2467w+37.512, 100-wxy) ​ ​ Point M(0.0, -0.3004w) 2 +2.419w +55.53, 0.3004w 2 -3.419w +44.47) Point W(10.0, -0.3645w) 2 +3.5024w34.422, 0.3645w 2 -4.5024w +55.578) Point N(18.2, -0.3773w 2 +3.319w+28.26, 0.3773w 2 -4.319w+53.54) Point O(36.8, -0.1392w) 2 +1.4381w +24.475, 0.1392w 2 -2.4381w+38.725) ​ Point C (0.1081w) 2 -5.169w +58.447, 0.0, -0.1081w 2 +4.169w +41.553) ​ ​ Coordinates (x, (0.0043w) 2 -0.0359w+0.1509)x 2 +(-0.0493w 2 +0.4669w-3.6193)x-0.3004w 2 +2.419w+55.53, 100-wxy) ​ ​ Coordinates (x, (0.0055w) 2 -0.0326w+0.0665)x 2 +(-0.1571w 2 +0.8981w-2.6274)x+0.6555w 2 -2.2153w+54.044, 100-wxy) ​ ​ Coordinates (x, (-0.00062w) 2 +0.0036w+0.0037)x 2 +(0.0375w 2 -0.239w-0.4977)x-0.8575w 2 +6.4941w+36.078, 100-wxy) ​ ​ Point M(0.0, -0.3004w) 2 +2.419w +55.53, 0.3004w 2 -3.419w +44.47) Point W(10.0, -0.3645w) 2 +3.5024w +34.422, 0.3645w 2 -4.5024w +55.578) Point N(18.2, -0.3773w 2 +3.319w+28.26, 0.3773w 2 -4.319w+53.54) Point O(36.8, -0.1392w) 2 +1.4381w +24.475, 0.1392w 2 -2.4381w+38.725) ​ ​ Point C(0.0, 0.1081w) 2 -5.169w +58.447, -0.1081w 2 +4.169w +41.553) Within the range of the figure enclosed by the curves MW, curve WN, and curve NO formed by connecting these 7 points respectively, as well as the straight lines OB', B'D, DC, and CM, excluding the points on the straight line CM, and, The curve MW is formed by Coordinates (x, (0.0043w) 2 -0.0359w+0.1509)x 2 +(-0.0493w 2 +0.4669w-3.6193)x-0.3004w 2 +2.419w+55.53, 100-wxy) as represented by The curve WN is formed by Coordinates (x, (0.0055w) 2 -0.0326w+0.0665)x 2 +(-0.1571w 2 +0.8981w-2.6274)x+0.6555w 2 -2.2153w+54.044, 100-wxy) as represented by The curve NO is formed by Coordinates (x, (-0.00062w) 2 +0.0036w+0.0037)x 2 +(0.0457w 2 -0.2581w-0.075)x-1.355w 2 +8.749w +27.096, 100-wxy) as represented by When 4.0 < w ≤ 7.0, the coordinates (x, y, z) are within Point M(0.0, -0.0667w) 2 +0.8333w58.133, 0.0667w 2 -1.8333w +41.867) Point W(10.0, -0.0667w) 2 +1.1w +39.267, 0.0667w 2 -2.1w+50.733) Point N(18.2, -0.0889w) 2 +1.3778w +31.411, 0.0889w 2 -2.3778w+50.389) Point O(36.8, -0.0444w) 2 +0.6889w +25.956, 0.0444w 2 -1.6889w+37.244) Point B'(36.6, 0.0, -w + 63.4) Point D(-2.8w + 40.1, 0.0, 1.8w + 59.9) Point C(0.0, 0.0667w) 2 -4.9667w +58.3, -0.0667w 2 +3.9667w+41.7) Within the range of the figure enclosed by the curves MW, curve WN, and curve NO formed by connecting these 7 points respectively, as well as the straight lines OB', B'D, DC, and CM, excluding the points on the straight line CM, and, The curve MW is formed by Coordinates (x, (0.00357w) 2 -0.0391w+0.1756)x 2 +(-0.0356w 2 +0.4178w-3.6422)x-0.0667w 2 +0.8333w+58.103, 100-wxy) as represented by The curve WN is formed by Coordinates (x, (-0.002061w) 2 +0.0218w-0.0301)x 2 +(0.0556w 2 -0.5821w-0.1108)x-0.4158w 2 +4.7352w+43.383, 100-wxy) as represented by The curve NO is formed by Coordinates (x, (0.0082x) 2 +(0.0022w 2 -0.0345w-0.7521)x-0.1307w 2 +2.0247w+42.327, 100-wxy) as represented by 2. The refrigeration device (500) as described in claim 1, wherein, The second cycle (520) is a cycle further connecting the second compressor (521) and the second expansion mechanism (524, 526). The first refrigerant flowing in the first radiator (512) of the first cycle (510) releases heat to the external gas. The first refrigerant is a mixed refrigerant, and the second refrigerant is carbon dioxide.

3. The refrigeration device as described in claim 1, wherein, The second cycle (520) is a cycle further connecting the second compressor (521) and the second expansion mechanism (524, 526). The first refrigerant flowing in the first radiator (512) of the first cycle (510) releases heat to the external gas. The first refrigerant is a mixed refrigerant, and the second refrigerant is the mixed refrigerant.

4. The refrigeration device as claimed in claim 1, wherein, The second cycle (520) is a cycle further connecting the second compressor (521) and the second expansion mechanism (524, 526). The first refrigerant flowing in the first radiator (512) of the first cycle (510) releases heat to the external gas. The first refrigerant is R32, and the second refrigerant is a mixed refrigerant.

5. The refrigeration device (100) as claimed in claim 1, wherein, The first refrigerant flowing in the first radiator (14) of the first cycle (RC) releases heat to the external gas. The first refrigerant is a mixed refrigerant, and the second refrigerant is a liquid medium.

6. A refrigeration device (600) includes a first cycle (615) and a second cycle (625). The first cycle (615) connects a first compressor (611), a first radiator (624b), a first expansion mechanism (613), and a first heat absorber (612). In the first cycle (615), the first refrigerant circulates. The second cycle (625) connects a second radiator (622b) and a second heat absorber (624a). In the second cycle (625), the second refrigerant circulates. The first radiator (624b) and the second heat absorber (624a) are heat exchangers (624) that effect heat exchange between the first refrigerant flowing in the first radiator (624b) and the second refrigerant flowing in the second heat absorber (624a). At least one of the first refrigerant and the second refrigerant is a first refrigerant. The first refrigerant contains CO2, trans-1,2-difluoroethylene (HFO-1132(E)), difluoromethane (R32), and 2,3,3,3-tetrafluoro-1-propene (R1234yf). When the mass percentages of CO2, R32, HFO-1132(E), and R1234yf based on their total are respectively set as w, x, y, and z, in a ternary composition diagram where the total of R32, HFO-1132(E), and R1234yf is (100 - w) mass%. When 0 < w ≤ 1.2, the coordinates (x, y, z) are within the range or on the line segment of the figure surrounded by the curve IJ, the curve JK, the curve KL, the straight line LB'', the straight line B''D, the straight line DC, and the straight line CI formed by connecting the following points respectively, excluding the points on the straight line B''D and the straight line CI: Point I(0.0, 72.0, 28.0 - w) Point J(18.3, 48.5, 33.2 - w) Point K(36.8, 35.6, 27.6 - w) Point L(51.7, 28.9, 19.4 - w) Point B’’(-1.5278w 2 +2.75w+50.5, 0.0, 1.5278w 2 -3.75w+49.5) Point D(-2.9167w + 40.317, 0.0, 1.9167w + 59.683) Point C(0.0, -4.9167w + 58.317, 3.9167w + 41.683) Within the area or line segment enclosed by the curves IJ, JK, and KL formed by connecting these 7 points, and the lines LB'', B''D, DC, and CI, where, Excluding the points on the straight line B''D and the straight line CI. When 1.2 < w ≤ 4.0, the coordinates (x, y, z) are within the range or on the line segment of the figure surrounded by the curve IJ, the curve JK, the curve KL, the straight line LB'', the straight line B''D, the straight line DC, and the straight line CI formed by connecting the following points respectively, excluding the points on the straight line B''D and the straight line CI: Point I(0.0, 72.0, 28.0 - w) Point J(18.3, 48.5, 33.2 - w) Point K(36. ​ ​ ​ Point C(0.0, 0.1081w) 2 -5.169w +58.447, -0.1081w 2 +4.169w +41.553) ​ ​ ​ ​ ​ ​ ​ ​ Point C(0.0, 0.0667w) 2 -4.9667w +58.3, -0.0667w 2 +3.9667w+41.7) Within the range of the figure enclosed by the curves IJ, JK, and KL formed by connecting these 7 points respectively, as well as the straight lines LB'', B''D, DC, and CI, excluding the points on the straight lines B''D and CI, and, The curve IJ is formed by Coordinates (x, 0.0236x) 2 -1.716x+72, -0.0236x 2 +0.716x+28-w) as represented by The curve JK is formed by Coordinates (x, 0.0095x) 2 -1.2222x + 67.676, -0.0095x 2 +0.2222x+32.324-w) as represented by The curve KL is formed by Coordinates (x, 0.0049x) 2 -0.8842x+61.488, -0.0049x 2 -0.1158x+38.512) as represented by; or When the mass percentages of CO2, R32, HFO-1132(E), and R1234yf based on their total are set as w, x, y, and z respectively, in the ternary composition diagram where the total of R32, HFO-1132(E), and R1234yf is (100 - w) mass%, When 0 < w ≤ 1.2, the coordinates (x, y, z) are within the range of the figure enclosed by the curves IJ and JK formed by connecting point I(0.0, 72.0, 28.0 - w) point J(18.3, 48.5, 33.2 - w) point K(36.8, 35.6, 27.6 - w) point F(-0.0833w + 36.717, -4.0833w + 5.1833, 3.1666w + 58.0997) point C(0.0, -4.9167w + 58.317, 3.9167w + 41.683) These 5 points respectively, excluding the points on the straight line CI, within the range of the figure enclosed by the curves IJ and JK and the straight lines KF, FC, and CI, When 1.2 < w ≤ 1.3, the coordinates (x, y, z) are within the range of the figure enclosed by the curves IJ and JK formed by connecting point I(0.0, 72.0, 28.0 - w) point J(18.3, 48.5, 33.2 - w) point K(36.8, 35.6, 27.6 - w) point F(36.6, -3w + 3.9, 2w + 59.5) Point C(0.0, 0.1081w) 2 -5.169w +58.447, -0.1081w 2 +4.169w +41.553) These 5 points respectively, excluding the points on the straight line CI, within the range of the figure enclosed by the curves IJ and JK and the straight lines KF, FC, and CI, When 1.3 < w ≤ 4.0, the coordinates (x, y, z) are within the range of the figure enclosed by the curves IJ and JK formed by connecting point I(0.0, 72.0, 28.0 - w) point J(18.3, 48.5, 33.2 - w) point K(36.8, 35.6, 27.6 - w) point B’(36.6, 0.0, -w + 63.4) point D(-2.8226w + 40.211, 0.0, 1.8226w + 59.789) Point C(0.0, 0.1081w) 2 -5.169w +58.447, -0.1081w 2 +4.169w +41.553) These 6 points respectively, excluding the points on the straight line CI, within the range of the figure enclosed by the curves IJ and JK and the straight lines KB’, B’D, DC, and CI, When 4.0 < w ≤ 7.0, the coordinates (x, y, z) are within the range of the figure enclosed by the curves IJ and JK formed by connecting point I(0.0, 72.0, 28.0 - w) point J(18.3, 48.5, 33.2 - w) point K(36.8, 35.6, 27.6 - w) point B’(36.6, 0.0, -w + 63.4) Point D(-2.8w + 40.1, 0.0, 1.8w + 59.9) Point C(0.0, 0.0667w) 2 -4.9667w +58.3, -0.0667w 2 +3.9667w+41.7) within the range of the figure enclosed by the curves IJ and JK formed by connecting these 6 points respectively, as well as the straight lines KB’, B’D, DC, and CI, and on the said line segments, excluding the points on the straight line CI, and the curve IJ is formed by Coordinates (x, 0.0236x) 2 -1.716x+72, -0.0236x 2 +0.716x+28-w) as represented by the curve JK is formed by Coordinates (x, 0.0095x) 2 -1.2222x + 67.676, -0.0095x 2 +0.2222x+32.324-w) as represented by; or when the mass percentages of CO2, R32, HFO-1132(E), and R1234yf based on their total are set as w, x, y, and z respectively, in the ternary composition diagram where the total of R32, HFO-1132(E), and R1234yf is (100 - w) mass%, when 0 < w ≤ 0.6, the coordinates (x, y, z) are within the range of the figure enclosed by the curves GO and OP formed by connecting Point G(-5.8333w) 2 -3.1667w +22.2, 7.0833w 2 +1.4167w +26.2, -1.25w 2 +0.75w+51.6) Point O(36.8, 0.8333w 2 +1.8333w+22.6, -0.8333w 2 -2.8333w+40.6) Point P(51.7, 1.1111w) 2 +20.5, -1.1111w 2 -w+27.8) Point B’’(-1.5278w 2 +2.75w+50.5, 0.0, 1.5278w 2 -3.75w+49.5) Point D(-2.9167w + 40.317, 0.0, 1.9167w + 59.683) these 5 points respectively, as well as the straight lines PB’’, B’’D, and DG, and on the said line segments, excluding the points on the straight line B’’D, when 0.6 < w ≤ 1.2, the coordinates (x, y, z) are within the range of the figure enclosed by the curves GN, NO, and OP formed by connecting Point G(-5.8333w) 2 -3.1667w +22.2, 7.0833w 2 +1.4167w +26.2, -1.25w 2 +0.75w+51.6) Point N(18.2, 0.2778w) 2 +3w +27.7, -0.2778w 2 -4w+54.1) Point O(36.8, 0.8333w 2 +1.8333w+22.6, -0.8333w 2 -2.8333w+40.6) Point P(51.7, 1.1111w) 2 +20.5, -1.1111w 2 -w+27.8) Point B’’(-1.5278w 2 +2.75w + 50.5, 0.0, 1.5278w 2 -3.75w + 49.5) Point D(-2.9167w + 40.317, 0.0, 1.9167w + 59.683) these 6 points respectively, as well as the straight lines PB’’, B’’D, and DG, and on the said line segments, excluding the points on the straight line B’’D, and the curve GO is represented by Coordinates (x, (0.00487w) 2 -0.0059w+0.0072)x 2 +(-0.279w 2 +0.2844w-0.6701)x+3.7639w 2 -0.2467w+37.512, 100-wxy) as represented by the curve GN is represented by Coordinates (x, (0.0122w) 2 -0.0113w+0.0313)x 2 +(-0.3582w 2 +0.1624w-1.4551)x+2.7889w 2 +3.7417w+43.824 , 100-wxy) as represented by the curve NO is represented by Coordinates (x, (0.00487w) 2 -0.0059w+0.0072)x 2 +(-0.279w 2 +0.2844w-0.6701)x+3.7639w 2 -0.2467w+37.512, 100-wxy) as represented by the curve OP is represented by Coordinates (x, (0.0074w) 2 -0.0133w+0.0064)x 2 +(-0.5839w 2 +1.0268w-0.7103)x+11.472w 2 -17.455w+40.07, 100-wxy) as represented by when 1.2 < w ≤ 4.0, the coordinates (x, y, z) are within the range of the figure enclosed by the curves MW, WN, NO, and OP formed by connecting Point M(0.0, -0.3004w) 2 +2.419w +55.53, 0.3004w 2 -3.419w +44.47) Point W(10.0, -0.3645w) 2 +3.5024w +44.422, 0.3645w 2 -4.5024w +55.578) Point N(18.2, -0.3773w 2 +3.319w+28.26, 0.3773w 2 -4.319w+53.54) Point O(36.8, -0.1392w) 2 +1.4381w +24.475, 0.1392w 2 -2.4381w+38.725) Point P(51.7, -0.2381w) 2 +1.881w +20.186, 0.2381w 2 -2.881w +28.114) Point B’’(51.6, 0.0, -w + 48.4) Point D(-2.8226w + 40.211, 0.0, 1.8226w + 59.789) Point C(0.0, 0.1081w) 2 -5.169w +58.447, -0.1081w 2 +4.169w +41.553) these 8 points respectively, as well as the straight lines PB’’, B’’D, DC, and CM, and on the said line segments, excluding the points on the straight lines B’’D and CM, and the curve MW is represented by Coordinates (x, (0.0043w) 2 -0.0359w+0.1509)x 2 +(-0.0493w 2 +0.4669w-3.6193)x-0.3004w 2 +2.419w+55.53, 100-wxy) as represented by the curve WN is represented by Coordinates (x, (0.0055w) 2 -0.0326w+0.0665)x 2 +(-0.1571w 2 +0.8981w-2.6274)x+0.6555w 2 -2.2153w+54.044, 100-wxy) as represented by the curve NO is represented by Coordinates (x, (-0.00062w) 2 +0.0036w+0.0037)x 2 +(0.0375w 2 -0.239w-0.4977)x-0.8575w 2 +6.4941w+36.078, 100-wxy) as represented by the curve OP is represented by Coordinates (x, (-0.000463w) 2 +0.0024w-0.0011)x 2 +(0.0457w 2 -0.2581w-0.075)x-1.355w 2 +8.749w +27.096, 100-wxy) as represented by when 4.0 < w ≤ 7.0, the coordinates (x, y, z) are within the range of the figure enclosed by the curves MW, WN, NO, and OP formed by connecting Point M(0.0, -0.0667w) 2 +0.8333w +58.133, 0.0667w 2 -1.8333w +41.867) Point W(10.0, -0.0667w) 2 +1.1w +39.267, 0.0667w 2 -2.1w+50.733) Point N(18.2, -0.0889w) 2 +1.3778w +31.411, 0.0889w 2 -2.3778w+50.389) Point O(36.8, -0.0444w) 2 +0.6889w +25.956, 0.0444w 2 -1.6889w+37.244) Point P(51.7, -0.0667w) 2 +0.8333w +21.633, 0.0667w 2 -1.8333w + 26.667) Point B’’(51.6, 0.0, -w + 48.4) Point D(-2.8w + 40.1, 0.0, 1.8w + 59.9) Point C(0.0, 0.0667w) 2 -4.9667w +58.3, -0.0667w 2 +3.9667w+41.7) these 8 points respectively, as well as the straight lines PB’’, B’’D, DC, and CM, and on the said line segments, excluding the points on the straight lines B’’D and CM, and the curve MW is represented by Coordinates (x, (0.00357w) 2 -0.0391w+0.1756)x 2 +(-0.0356w 2 +0.4178w-3.6422)x-0.0667w 2 +0.8333w+58.103, 100-wxy) as represented by the curve WN is represented by Coordinates (x, (-0.002061w) 2 +0.0218w-0.0301)x 2 +(0.0556w 2 -0.5821w-0.1108)x-0.4158w 2 +4.7352w+43.383, 100-wxy) as represented by The curve NO is represented by Coordinates (x, 0.0082x) 2 +(0.0022w 2 -0.0345w-0.7521)x-0.1307w 2 +2.0247w+42.327, 100-wxy) as shown; The curve OP is represented by Coordinates (x, (-0.0006258w) 2 +0.0066w-0.0153)x 2 +(0.0516w 2 -0.5478w + 0.9894) x - 1.074w 2 +11.651w +10.992, 100-wxy) as shown; or When the mass percentages of CO2, R32, HFO-1132(E), and R1234yf based on their total are set as w, x, y, and z respectively, in the ternary composition diagram where the total of R32, HFO-1132(E), and R1234yf is (100 - w) mass%, When 0 < w ≤ 0.6, the coordinates (x, y, z) are within or on the line segments of the figure enclosed by the curve GO formed by connecting Point G(-5.8333w) 2 -3.1667w +22.2, 7.0833w 2 -1.4167w +26.2, -1.25w 2 +3.5834w+51.6) Point O(36.8, 0.8333w 2 +1.8333w+22.6, -0.8333w 2 -2.8333w+40.6) the three points F(-0.0833w + 36.717, -4.0833w + 5.1833, 3.1666w + 58.0997), the straight line OF, and the straight line FG; and The curve GO is represented by Coordinates (x, (0.00487w) 2 -0.0059w+0.0072)x 2 +(-0.279w 2 +0.2844w-0.6701)x+3.7639w 2 -0.2467w+37.512, 100-wxy) as shown; When 0.6 < w ≤ 1.2, the coordinates (x, y, z) are within or on the line segments of the figure enclosed by the curve GN, the curve NO, the straight line OF, and the straight line FG formed by connecting Point G(-5.8333w) 2 -3.1667w +22.2, 7.0833w 2 -1.4167w +26.2, -1.25w 2 +3.5834w+51.6) Point N(18.2, 0.2778w) 2 +3.0w +27.7, -0.2778w 2 -4.0w +54.1) Point O(36.8, 0.8333w 2 +1.8333w+22.6, -0.8333w 2 -2.8333w+40.6) the four points F(-0.0833w + 36.717, -4.0833w + 5.1833, 3.1666w + 58.0997); and The curve GN is represented by as shown when 0.6 < w ≤ 1.2, Coordinates (x, (0.0122w) 2 -0.0113w+0.0313)x 2 +(-0.3582w 2 +0.1624w-1.4551)x+2.7889w 2 +3.7417w+43.824 , 100-wxy) as shown; The curve NO is represented by Coordinates (x, (0.00487w) 2 -0.0059w+0.0072)x 2 +(-0.279w 2 +0.2844w-0.6701)x+3.7639w 2 -0.2467w+37.512, 100-wxy) as shown when 0.6 < w ≤ 1.2, When 1.2 < w ≤ 1.3, the coordinates (x, y, z) are within or on the line segments of the figure enclosed by the curve MW, the curve WN, the curve NO, the straight line OF, the straight line FC, and the straight line CM formed by connecting Point M(0.0, -0.3004w) 2 +2.419w +55.53, 0.3004w 2 -3.419w +44.47) Point W(10.0, -0.3645w) 2 +3.5024w34.422, 0.3645w 2 -4.5024w +55.578) Point N(18.2, -0.3773w 2 +3.319w+28.26, 0.3773w 2 -4.319w+53.54) Point O(36.8, -0.1392w) 2 +1.4381w +24.475, 0.1392w 2 -2.4381w+38.725) the six points F(36.6, -3w + 3.9, 2w + 59.5), Point C (0.1081w) 2 -5.169w +58.447, 0.0, -0.1081w 2 +4.169w +41.553) excluding the points on the straight line CM; and The curve MW is represented by Coordinates (x, (0.0043w) 2 -0.0359w+0.1509)x 2 +(-0.0493w 2 +0.4669w-3.6193)x-0.3004w 2 +2.419w+55.53, 100-wxy) as shown; The curve WN is represented by Coordinates (x, (0.0055w) 2 -0.0326w+0.0665)x 2 +(-0.1571w 2 +0.8981w-2.6274)x+0.6555w 2 -2.2153w+54.044, 100-wxy) as shown; The curve NO is represented by Coordinates (x, (-0.00062w) 2 +0.0036w+0.0037)x 2 +(0.0375w 2 -0.239w-0.4977)x-0.8575w 2 +6.4941w+36.078, 100-wxy) as shown; When 1.3 < w ≤ 4.0, the coordinates (x, y, z) are within or on the line segments of the figure enclosed by the curve MW, the curve WN, the curve NO, the straight line OB’, the straight line B’D, the straight line DC, and the straight line CM formed by connecting Point M(0.0, -0.3004w) 2 +2.419w +55.53, 0.3004w 2 -3.419w +44.47) Point W(10.0, -0.3645w) 2 +3.5024w +34.422, 0.3645w 2 -4.5024w +55.578) Point N(18.2, -0.3773w 2 +3.319w+28.26, 0.3773w 2 -4.319w+53.54) Point O(36.8, -0.1392w) 2 +1.4381w +24.475, 0.1392w 2 -2.4381w+38.725) the point B’(36.6, 0.0, -w + 63.4) the point D(-2.8226w + 40.211, 0.0, 1.8226w + 59.789), Point C(0.0, 0.1081w) 2 -5.169w +58.447, -0.1081w 2 +4.169w +41.553) excluding the points on the straight line CM; and The curve MW is represented by Coordinates (x, (0.0043w) 2 -0.0359w+0.1509)x 2 +(-0.0493w 2 +0.4669w-3.6193)x-0.3004w 2 +2.419w+55.53, 100-wxy) as shown; The curve WN is represented by Coordinates (x, (0.0055w) 2 -0.0326w+0.0665)x 2 +(-0.1571w 2 +0.8981w-2.6274)x+0.6555w 2 -2.2153w+54.044, 100-wxy) as shown; The curve NO is represented by Coordinates (x, (-0.00062w) 2 +0.0036w+0.0037)x 2 +(0.0457w 2 -0.2581w-0.075)x-1.355w 2 +8.749w +27.096, 100-wxy) as shown; When 4.0 < w ≤ 7.0, the coordinates (x, y, z) are within or on the line segments of the figure enclosed by the curve MW, the curve WN, the curve NO, the straight line OB’, the straight line B’D, the straight line DC, and the straight line CM formed by connecting Point M(0.0, -0.0667w) 2 +0.8333w58.133, 0.0667w 2 -1.8333w +41.867) Point W(10.0, -0.0667w) 2 +1.1w +39.267, 0.0667w 2 -2.1w+50.733) Point N(18.2, -0.0889w) 2 +1.3778w +31.411, 0.0889w 2 -2.3778w+50.389) Point O(36.8, -0.0444w) 2 +0.6889w +25.956, 0.0444w 2 -1.6889w+37.244) the point B’(36.6, 0.0, -w + 63.4) the point D(-2.8w + 40.1, 0.0, 1.8w + 59.9), Point C(0.0, 0.0667w) 2 -4.9667w +58.3, -0.0667w 2 +3.9667w+41.7) excluding the points on the straight line CM; and The curve MW is represented by Coordinates (x, (0.00357w) 2 -0.0391w+0.1756)x 2 +(-0.0356w 2 +0.4178w-3.6422)x-0.0667w 2 +0.8333w+58.103, 100-wxy) as shown; The curve WN is represented by Coordinates (x, (-0.002061w) 2 +0.0218w-0.0301)x 2 +(0.0556w 2 -0.5821w-0.1108)x-0.4158w 2 +4.7352w+43.383, 100-wxy) as shown; The curve NO is represented by Coordinates (x, (0.0082x) 2 +(0.0022w 2 -0.0345w-0.7521)x-0.1307w 2 +2.0247w+42.327, 100-wxy) as shown.

7. The refrigeration apparatus as claimed in claim 6, wherein, The second cycle (625) is a cycle that further connects the second compressor (621) and the second expansion mechanism (623). The first refrigerant flowing in the first heat absorber (612) of the first cycle (615) absorbs heat from the external gas. The first refrigerant is a mixed refrigerant. The second refrigerant is a refrigerant whose saturation pressure at a specified temperature is lower than that of the mixed refrigerant.

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