CN115584241A - Mixed refrigerant, refrigerating system and refrigerator - Google Patents
Mixed refrigerant, refrigerating system and refrigerator Download PDFInfo
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- CN115584241A CN115584241A CN202211262484.8A CN202211262484A CN115584241A CN 115584241 A CN115584241 A CN 115584241A CN 202211262484 A CN202211262484 A CN 202211262484A CN 115584241 A CN115584241 A CN 115584241A
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 79
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 claims abstract description 57
- WFLOTYSKFUPZQB-OWOJBTEDSA-N (e)-1,2-difluoroethene Chemical group F\C=C\F WFLOTYSKFUPZQB-OWOJBTEDSA-N 0.000 claims abstract description 35
- VPAYJEUHKVESSD-UHFFFAOYSA-N trifluoroiodomethane Chemical compound FC(F)(F)I VPAYJEUHKVESSD-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000005057 refrigeration Methods 0.000 claims description 20
- 230000008020 evaporation Effects 0.000 claims description 15
- 238000001704 evaporation Methods 0.000 claims description 15
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 238000007710 freezing Methods 0.000 claims description 2
- 230000008014 freezing Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003063 flame retardant Substances 0.000 abstract description 3
- 239000007791 liquid phase Substances 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 14
- 239000007788 liquid Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
- C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/006—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant containing more than one component
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/006—General constructional features for mounting refrigerating machinery components
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
- C09K2205/122—Halogenated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
- C09K2205/126—Unsaturated fluorinated hydrocarbons
Abstract
The invention relates to a mixed refrigerant, a refrigerating system and a refrigerator, belonging to the technical field of refrigerants, wherein the mixed refrigerant comprises isobutene, trifluoroiodomethane, 1, 2-tetrafluoroethane and trans-1, 2-difluoroethylene. The mixed refrigerant disclosed by the invention has a low GWP value, meets the requirement of environmental protection, has a certain flame retardant effect and improves the safety of the refrigerant.
Description
Technical Field
The invention belongs to the technical field of refrigerants, and particularly relates to a mixed refrigerant, a refrigerating system and a refrigerator.
Background
With the increasing emphasis on environmental protection, the montreal protocol amendment requires a refrigerant with low GWP (global warming potential) without damaging the ozone layer to replace the current high GWP refrigerant, and the refrigerant is effectively applied to the refrigeration system, for the "greenhouse effect" of HFCs (hydrofluorocarbons). In the F-gas act of the european union, the market was regulated in 2025 to prohibit the release of all wholly enclosed refrigeration products (such as showcases, vending machine refrigeration equipment) containing fluorinated greenhouse gases with GWP above 150, and no perfect alternative to the conventional refrigerant R404A (GWP = 3920) has been found.
In the related art, R600a, R290 and CO2 are used as alternatives of refrigerants, GWP of R600a, R290 and CO2 is 1, but the R600a, R290 and CO2 are flammable and explosive refrigerants, and refrigerating capacity of R600a per unit volume is low, so that the volume of the compressor is large; CO2 2 As a refrigerant, it is high in pressure, costly in system, prone to leakage and hazardous. Therefore, it is urgent to find a refrigerant which has a GWP of less than 150, good thermal performance and good safety performance.
Disclosure of Invention
In order to overcome the problems in the related art, the present disclosure provides a mixed refrigerant, a refrigeration system, and a refrigerator.
The first aspect of the present invention proposes a mixed refrigerant comprising isobutylene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)).
Further optionally, the mixed refrigerant comprises, in parts by weight, 8 to 20 parts by weight of isobutylene, 8 to 32 parts by weight of trifluoroiodomethane, 4 to 10 parts by weight of 1, 2-tetrafluoroethane, and 52 to 68 parts by weight of 1, 2-difluoroethylene.
Further alternatively, the mixed refrigerant is composed of, in parts by weight, 8 to 20 parts by weight of isobutylene, 8 to 32 parts by weight of trifluoroiodomethane, 4 to 10 parts by weight of 1, 2-tetrafluoroethane and 52 to 68 parts by weight of 1, 2-difluoroethylene.
Further alternatively, the mixed refrigerant is composed of, in parts by weight, 12 to 16 parts of isobutylene, 16 to 28 parts of trifluoroiodomethane, 4 to 8 parts of 1, 2-tetrafluoroethane, and 52 to 60 parts of 1, 2-difluoroethylene.
Further alternatively, the mixed refrigerant is composed of 16 parts by weight of isobutylene, 16 parts by weight of trifluoroiodomethane, 8 parts by weight of 1, 2-tetrafluoroethane and 60 parts by weight of 1, 2-difluoroethylene.
Further optionally, the mixed refrigerant has a condensation temperature greater than 90 ℃. The condensation temperature is the highest temperature at which the mixed refrigerator is transformed from a gaseous state to a liquid state.
Further optionally, the mixed refrigerant has a GWP value (global warming potential) of less than 150.
The preparation method of the mixed refrigerant of the embodiment comprises the following steps: weighing isobutene, trifluoroiodomethane, 1, 2-tetrafluoroethane and trans-1, 2-difluoroethylene in liquid phase state respectively according to the weight parts, and mixing the weighed components to obtain the mixed refrigerant.
A second aspect of the present invention provides a refrigeration system in which the mixed refrigerant proposed in the first aspect of the present invention is circulated.
Further optionally, the refrigeration system includes a compressor, a condenser, a throttling device, a first evaporator and a second evaporator, and the compressor, the condenser, the throttling device, the first evaporator and the second evaporator are connected in sequence to form a refrigerant circulation loop;
wherein the evaporation temperature of the first evaporator is lower than the evaporation temperature of the second evaporator.
In a third aspect, the present invention provides a refrigerator employing the refrigeration system of the second aspect, wherein the first evaporator is disposed in a freezing region of the refrigerator, and the second evaporator is disposed in a refrigerating region of the refrigerator.
The technical scheme of the invention can comprise the following beneficial effects: the GWP value of the mixed refrigerant is lower than 150, the mixed refrigerant meets the requirement of environmental protection, and the mixed refrigerant prepared by mixing the components in a proper proportion has excellent thermal performance. The critical temperature of the mixing refrigerator is more than 90 ℃, so that the mixed refrigerant can be liquefied at high condensation temperature, and the efficiency of the heat exchanger is higher.
The isobutene and the trans-1, 2-difluoroethylene (R1132 (E)) in the mixed refrigerant can widen the temperature slip range of the mixed refrigerant, and the trans-1, 2-difluoroethylene R1132 (E) can increase the volume refrigerating capacity of the refrigerant. Trifluoroiodomethane (R13I 1) and 1, 2-tetrafluoroethane (R134 a) are non-flammable refrigerants, and after being mixed with flammable refrigerants, namely isobutene and trans-1, 2-difluoroethylene (R1132 (E)), the flammability of the isobutene and the trans-1, 2-difluoroethylene (R1132 (E)) can be reduced or even eliminated, and the safety of the refrigerants is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a refrigeration system shown according to an exemplary embodiment.
Detailed Description
The present invention is further described in the following description of the specific embodiments, which is not intended to limit the invention, but various modifications and improvements can be made by those skilled in the art according to the basic idea of the invention, within the scope of the invention, as long as they do not depart from the basic idea of the invention.
In this embodiment, isobutylene, trifluoroiodomethane, 1, 2-tetrafluoroethane, and trans-1, 2-difluoroethylene in liquid phase are weighed separately in parts by weight, and the weighed components are mixed to obtain a mixed refrigerant. The basic parameters of each component material are shown in Table 1.
Table 1: basic parameters of each component material
| Name(s) | Molecular weight | Normal boiling point deg.C | GWP |
| Isobutene | 56.1 | -7.0 | 1 |
| Trifluoroiodomethane | 195.9 | -21.9 | 1 |
| 1, 2-tetrafluoroethane | 102.0 | -26.1 | 1430 |
| Trans-1, 2-difluoroethylene | 64.0 | -52.5 | 1 |
The mixed refrigerant of the present embodiment is used in a dual-temperature refrigeration system, and the refrigeration system of the present embodiment includes, as shown in fig. 1, a compressor 1, a condenser 3, a throttling device 2, a first evaporator 4, and a second evaporator 5, where the compressor 1, the condenser 3, the throttling device 2, the first evaporator 4, and the second evaporator 5 are connected in sequence to form a refrigerant circulation loop. The high-temperature high-pressure mixed gaseous refrigerant discharged from the exhaust port of the compressor 1 enters the condenser 3 for condensation, the mixed refrigerant in the system is condensed into liquid, the liquid is throttled by the throttling device 2 and then enters the first evaporator 4 and the second evaporator 5 for evaporation, and finally returns to the compressor. When the refrigeration system is used in a refrigerator, the first evaporator 3 is placed in the freezer section of the ice bin and the second evaporator 4 is placed in the freezer section.
Since the mixed refrigerant of the present embodiment is a non-azeotropic refrigerant and has a large temperature glide, the evaporation temperature of the first warm evaporator 4 is lower than that of the second warm evaporator 5 under the same evaporation pressure, so that the evaporation temperature is matched with the temperature zone. The mixed refrigerant is evaporated from low to high under the same evaporation pressure, the low-temperature evaporation of the first evaporator is satisfied in the first half section, and the high-temperature evaporation of the second evaporator is satisfied in the second half section, so that the heat transfer temperature difference is reduced; and for pure refrigerant, the evaporation temperature is unchanged under the same evaporation pressure, after low-temperature evaporation is met, the same evaporation temperature can still be used for a high-temperature area, the heat transfer temperature difference is greater than that of a mixed refrigerant, and the larger the temperature difference is, the larger the irreversible loss is.
The components are mixed according to different proportions to prepare different mixed refrigerants.
Example 1
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at a normal temperature in the liquid phase in the following ratio of 8.
Example 2
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at a normal temperature in a liquid phase in a ratio of 20.
Example 3
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at a normal temperature in a liquid phase in a ratio of 8.
Example 4
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at room temperature in a liquid phase in a ratio of 8.
Example 5
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at a normal temperature in a liquid phase in a ratio of 20.
Example 6
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at room temperature in a liquid phase in a ratio of 8.
Example 7
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at room temperature in the liquid phase in the following ratio of 12.
Example 8
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at room temperature in a liquid phase in a ratio of 8.
Example 9
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at a normal temperature in a liquid phase in a ratio of 16.
Comparative example 1
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at room temperature in a liquid phase in the following ratio of 5.
Comparative example 2
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at a normal temperature in a liquid phase in a ratio of 25.
Comparative example 3
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at a normal temperature in a liquid phase in a ratio of 20.
Comparative example 4
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at room temperature in a liquid phase in a ratio of 4.
Comparative example 5
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at room temperature in a liquid phase in a ratio of 8.
Comparative example 6
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at a normal temperature in a liquid phase in a ratio of 20.
Comparative example 7
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at room temperature in a liquid phase in a ratio of 12.
Comparative example 8
Isobutene, trifluoroiodomethane (R13I 1), 1, 2-tetrafluoroethane (R134 a), and trans-1, 2-difluoroethylene (R1132 (E)) were mixed at a normal temperature in a liquid phase in a ratio of 20.
Examples 1 to 9 and comparative examples 1 to 8 were used in the refrigeration system of fig. 1, and the refrigeration cycle performance of the refrigeration system circuit obtained by the above-described calculation in the examples was compared with the relative thermodynamic performance (i.e., relative refrigerating capacity per unit volume and relative efficiency COP) of the refrigerant R290 by performing simulation calculations at a temperature of 5 ℃ in the cold storage region, a temperature of-18 ℃ in the isentropic efficiency of 0.7, a superheat degree of 5 ℃, a supercooling degree of 5 ℃ and an ambient temperature of 35 ℃, and the comparison results are shown in tables 2 to 3.
TABLE 2 basic parameters (one) of each refrigerant
TABLE 3 basic parameters (II) of the refrigerants
As can be seen from tables 2 to 3, the thermodynamic cycle performance coefficients of the mixed refrigerants of the embodiments 1 to 9 are better than those of R290 on the premise of meeting the environmental protection requirements. As can be seen from Table 3, when the mixed refrigerant of the present embodiment is used in a multi-temperature-zone refrigeration system, the relative volumetric refrigeration capacity and the relative COP value of the mixed refrigerant are superior to those of the R290 refrigerant system, and the mixed refrigerant can be used as a high-environmental-protection refrigerant for a multi-temperature-zone refrigerator. Meanwhile, the COP performance coefficients of comparative examples 1 to 8 are basically lower than those of examples 1 to 9, and the COP (coefficient of performance) represents the refrigerating capacity of a refrigerating system, which shows that the mixed refrigerant prepared by the mixture ratio of the components in the examples 1 to 9 has the best refrigerating effect.
According to basic parameters of the refrigerants prepared in the comparative examples 1 and 2, the first component is more appropriate at 8-20%, and if the proportion is too small, the cold quantity of the second warm evaporator cannot meet the requirement. If the ratio is too large, the refrigerating capacity of the first warm evaporator cannot meet the requirement, and meanwhile, the relative volume refrigerating capacity is low.
According to basic parameters of the refrigerants prepared in the comparative examples 3 and 4, the cost and the flammability are considered, the second component is more appropriate at 8-32%, the proportion is too much, and the overall cost of the refrigerant is too high; if the proportion is too small, the flame retardant effect is weak, and the cold quantity of the first temperature evaporator can not meet the requirement.
According to the basic parameters of the refrigerants prepared in the comparative examples 5 and 6, the third component is more suitable at 4-10%, the proportion is too large, the GWP value cannot meet the requirement of being lower than 150, and the flame retardant effect is weaker if the proportion is too small.
According to basic parameters of the refrigerants prepared in the comparative examples 7 and 8, the fourth component is proper at 52-68%, and the cold quantity of the second warm evaporator cannot meet the requirement if the proportion is too large. If the ratio is too low, the cold capacity of the first warm evaporator cannot meet the requirement.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A mixed refrigerant characterized by comprising isobutylene, trifluoroiodomethane, 1, 2-tetrafluoroethane and trans-1, 2-difluoroethylene.
2. The mixed refrigerant according to claim 1, wherein the mixed refrigerant comprises 8 to 20 parts by weight of isobutylene, 8 to 32 parts by weight of trifluoroiodomethane, 4 to 10 parts by weight of 1, 2-tetrafluoroethane and 52 to 68 parts by weight of 1, 2-difluoroethylene.
3. The mixed refrigerant according to claim 2, wherein the mixed refrigerant is composed of 8 to 20 parts by weight of isobutylene, 8 to 32 parts by weight of trifluoroiodomethane, 4 to 10 parts by weight of 1, 2-tetrafluoroethane and 52 to 68 parts by weight of 1, 2-difluoroethylene.
4. A mixed refrigerant according to claim 3, wherein the mixed refrigerant is composed of 12 to 16 parts by weight of isobutylene, 16 to 28 parts by weight of trifluoroiodomethane, 4 to 8 parts by weight of 1, 2-tetrafluoroethane and 52 to 60 parts by weight of 1, 2-difluoroethylene.
5. The mixed refrigerant according to claim 4, wherein the mixed refrigerant is composed of 16 parts by weight of isobutylene, 16 parts by weight of trifluoroiodomethane, 8 parts by weight of 1, 2-tetrafluoroethane and 60 parts by weight of 1, 2-difluoroethylene.
6. A mixed refrigerant according to any of claims 1 to 5 having a condensation temperature of greater than 90 ℃.
7. A mixed refrigerant according to any one of claims 1 to 5, wherein the mixed refrigerant has a GWP value of less than 150.
8. A refrigeration system wherein the mixed refrigerant of any one of claims 1 to 7 is circulated.
9. The refrigeration system as claimed in claim 8, wherein the refrigeration system comprises a compressor, a condenser, a throttling device, a first evaporator and a second evaporator, and the compressor, the condenser, the throttling device, the first evaporator and the second evaporator are connected in sequence to form a refrigerant circulation loop;
wherein the evaporation temperature of the first evaporator is lower than the evaporation temperature of the second evaporator.
10. A refrigerator employing the refrigeration system of claim 9, wherein the first evaporator is disposed in a freezing region of the refrigerator, and the second evaporator is disposed in a refrigerating region of the refrigerator.
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| CN108603699A (en) * | 2015-12-08 | 2018-09-28 | 特灵国际有限公司 | High-temperature-hot-water is obtained using the heat recycled from heat source |
| US20180363947A1 (en) * | 2015-12-08 | 2018-12-20 | Trane International Inc. | Using heat recovered from heat source to obtain high temperature hot water |
| CN112805352A (en) * | 2018-10-01 | 2021-05-14 | Ａｇｃ株式会社 | Composition for heat cycle system and heat cycle system |
| JP2022021660A (en) * | 2020-07-22 | 2022-02-03 | ダイキン工業株式会社 | Composition containing coolant, method of suppressing disproportionate reaction using the composition, method of preserving the composition, and method of transporting the composition, as well as, refrigeration method using the composition, operation method of refrigerator, and refrigerator |
| WO2022075389A1 (en) * | 2020-10-09 | 2022-04-14 | ダイキン工業株式会社 | Refrigerant-containing composition |
| JP2022063196A (en) * | 2020-10-09 | 2022-04-21 | ダイキン工業株式会社 | Refrigerant-containing composition |
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