CN115181547B - Refrigerant, preparation method thereof and refrigeration system - Google Patents
Refrigerant, preparation method thereof and refrigeration system Download PDFInfo
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- CN115181547B CN115181547B CN202210752163.XA CN202210752163A CN115181547B CN 115181547 B CN115181547 B CN 115181547B CN 202210752163 A CN202210752163 A CN 202210752163A CN 115181547 B CN115181547 B CN 115181547B
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 75
- 238000005057 refrigeration Methods 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title abstract description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 38
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000001294 propane Substances 0.000 claims abstract description 19
- VPAYJEUHKVESSD-UHFFFAOYSA-N trifluoroiodomethane Chemical compound FC(F)(F)I VPAYJEUHKVESSD-UHFFFAOYSA-N 0.000 claims abstract description 19
- QCMKXHXKNIOBBC-UHFFFAOYSA-N 3-fluoroprop-1-ene Chemical compound FCC=C QCMKXHXKNIOBBC-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 238000010792 warming Methods 0.000 abstract description 7
- 239000003795 chemical substances by application Substances 0.000 abstract description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 17
- 239000007791 liquid phase Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VJGCZWVJDRIHNC-UHFFFAOYSA-N 1-fluoroprop-1-ene Chemical compound CC=CF VJGCZWVJDRIHNC-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Classifications
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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
- 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
-
- 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
-
- 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
- C09K2205/34—The mixture being non-azeotropic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The application provides a refrigerant, a preparation method thereof and a refrigeration system. The refrigerant is formed by combining a first component, a second component, a third component and a fourth component; the first component comprises 3-fluoropropene, the second component comprises trifluoroiodomethane, the third component comprises difluoromethane, and the fourth component comprises propane. The application adopts a plurality of four components with low ozone depletion potential, and the four components are combined to form the mixed refrigerant, so that the global warming potential value is low and the environmental performance is excellent; the mixed refrigerant has good thermodynamic performance, global warming potential is lower than 150, the thermodynamic performance is superior to R290, and especially, the second component is a non-flammable agent, so that the combustibility of the flammable agent can be reduced or even eliminated, and the safety of a system is improved.
Description
Technical Field
The application belongs to the technical field of refrigerants, and particularly relates to a refrigerant, a preparation method thereof and a refrigeration system.
Background
With the increasing trend toward environmental protection, the montreal protocol amendment for the "greenhouse effect" of Hydrofluorocarbons (HFCs) requires a refrigerant that does not destroy the ozone layer and has a low Global Warming Potential (GWP) value to replace the current high GWP refrigerants and be effectively used in refrigeration systems. In the european union's F-gas act, the 2025 market is regulated to prohibit the release of all totally enclosed refrigeration products (e.g. display cases, vending machine refrigeration units) containing fluorinated greenhouse gases GWP above 150, but no more perfect replacement R404A (gwp=3920) product is currently found. Although the corresponding alternative refrigerants, such as R600a and R290, are flammable and explosive refrigerants, and the refrigerating capacity of the unit volume of R600a is lower, so that the compressor volume is larger; CO 2 The refrigerant is used as a refrigerant, the pressure is high, the system cost is high, and the refrigerant is easy to leak and dangerous. Thus, a refrigerant forcing is sought that simultaneously meets a GWP of less than 150 and has good thermal performanceIn the eyebrows.
Disclosure of Invention
Therefore, the application provides a refrigerant, a preparation method thereof and a refrigeration system, which can solve the problem that the prior art does not have the refrigerant which simultaneously meets the GWP of less than 150 and has good thermal performance.
In order to solve the above problems, the present application provides a refrigerant composed of a first component, a second component, a third component and a fourth component;
the first component comprises 3-fluoropropene, the second component comprises trifluoroiodomethane, the third component comprises difluoromethane, and the fourth component comprises propane.
Optionally, the first component, the second component, the third component and the fourth component are sequentially in percentage by mass: 15% -30%, 5% -10%, 10% -20% and 40% -70%.
Optionally, the first component, the second component, the third component and the fourth component are sequentially in percentage by mass: 15% -25%, 7% -10%, 12% -20% and 45% -70%.
Optionally, the first component, the second component, the third component and the fourth component are sequentially in percentage by mass: 18% -25%, 8% -10%, 15% -20% and 45% -65%.
Optionally, the first component, the second component, the third component and the fourth component are sequentially in percentage by mass: 18% -23%, 8% -10%, 15% -20% and 45% -60%.
Optionally, the first component, the second component, the third component and the fourth component are sequentially in percentage by mass: 20% -23%, 8% -10%, 18% -20% and 50% -60%.
Optionally, the first component, the second component, the third component and the fourth component are sequentially in percentage by mass: 20% -23%, 8% -10%, 18% -20% and 50% -55%.
Optionally, the first component, the second component, the third component and the fourth component are sequentially in percentage by mass: 20%, 10%, 20% and 50%.
According to another aspect of the present application, there is provided a method for preparing a refrigerant as described above, comprising:
preparing a first component, a second component, a third component and a fourth component;
and (3) at normal temperature, the first component, the second component, the third component and the fourth component are physically and uniformly mixed.
According to still another aspect of the present application, there is provided a refrigeration system using the refrigerant as described above as a refrigerant.
Optionally, the refrigeration system comprises a compressor, a throttling device, a condenser and an evaporator which are connected in a circulating way; the evaporator comprises a low-temperature evaporator and a high-temperature evaporator, one end of the low-temperature evaporator is connected with the throttling device, the other end of the low-temperature evaporator is connected with the high-temperature evaporator, and the other end of the high-temperature evaporator is connected with the compressor.
The application provides a refrigerant, which is formed by combining a first component, a second component, a third component and a fourth component; the first component comprises 3-fluoropropene, the second component comprises trifluoroiodomethane, the third component comprises difluoromethane, and the fourth component comprises propane.
The application adopts a plurality of four components with low ozone depletion potential, and the four components are combined to form the mixed refrigerant, so that the global warming potential value is low and the environmental performance is excellent; the mixed refrigerant has good thermodynamic performance, global warming potential is lower than 150, the thermodynamic performance is superior to R290, and especially, the second component is a non-flammable agent, so that the combustibility of the flammable agent can be reduced or even eliminated, and the safety of a system is improved.
Drawings
FIG. 1 is a schematic diagram of a refrigeration system according to an embodiment of the present application;
the reference numerals are expressed as:
1. a compressor; 2. a throttle device; 3. a condenser; 4. a low temperature evaporator; 5. a high temperature evaporator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
According to an embodiment of the present application, a refrigerant is composed of a first component, a second component, a third component, and a fourth component;
the first component comprises 3-fluoropropene, the second component comprises trifluoroiodomethane, the third component comprises difluoromethane, and the fourth component comprises propane.
The application adopts a plurality of four components with low ozone depletion potential, and the four components are combined to form the mixed refrigerant, so that the global warming potential value is low and the environmental performance is excellent; the mixed refrigerant has good thermodynamic performance, global warming potential is lower than 150, the thermodynamic performance is superior to R290, and especially, the second component is a non-flammable agent, so that the combustibility of the flammable agent can be reduced or even eliminated, and the safety of a system is improved. The first component and the fourth component are environment-friendly refrigerants with GWP lower than 150; the third component and the fourth component have better low-temperature circulation performance, the energy efficiency of the system is improved, and the two refrigerants have higher volume refrigerating capacity, so that the volume of the compressor can be reduced, and the cost is reduced.
The mixed refrigerant is suitable for a refrigerator with multiple temperature areas, and the system using the mixed refrigerant has low GWP value and meets the environmental protection regulation requirements of all areas of the world.
The basic parameters of each of the substances used in the present application are shown in Table 1.
TABLE 1 basic parameters of the component substances
In some embodiments, the first component, the second component, the third component, and the fourth component are in the following order by mass percent: 15% -30%, 5% -10%, 10% -20% and 40% -70%. Most preferably, the first component, the second component, the third component and the fourth component are sequentially prepared from the following components in percentage by mass: 20%, 10%, 20% and 50%.
The preparation method of the refrigerant comprises the following steps:
preparing a first component, a second component, a third component and a fourth component;
and (3) at normal temperature, the first component, the second component, the third component and the fourth component are physically and uniformly mixed.
Referring to fig. 1 in combination, a refrigeration system according to an embodiment of the present application uses the refrigerant as described above as a refrigerant.
In some embodiments, a refrigeration system includes a compressor, a throttling device, a condenser, and an evaporator in a cyclical connection; the evaporator comprises a low-temperature evaporator and a high-temperature evaporator, one end of the low-temperature evaporator is connected with the throttling device, the other end of the low-temperature evaporator is connected with the high-temperature evaporator, and the other end of the high-temperature evaporator is connected with the compressor.
The high-temperature high-pressure mixed gaseous refrigerant from the exhaust port of the compressor 1 enters the condenser 3 to be condensed, the mixed refrigerant in the system is condensed into liquid, the liquid enters the low-temperature evaporator 4 and the high-temperature evaporator 5 to be evaporated sequentially through throttling of the throttling device 2, and finally returns to the compressor. The low temperature evaporator 4 is placed in the freezer section of the ice chest and the high temperature evaporator 5 is placed in the refrigeration section.
Since the mixed refrigerant is a non-azeotropic refrigerant, having a large temperature slip, the evaporation temperature of the low temperature evaporator 4 is lower than that of the high temperature evaporator 5 at the same evaporation pressure, so that the evaporation temperature matches with the temperature zone.
The mixed refrigerant of the present application will be described in specific examples.
Example 1
The 3-fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32)) are physically and uniformly mixed at the mass ratio of 30:10:40:20 under the normal temperature liquid phase to obtain the mixed refrigerant.
Example 2
3-fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32)) are physically and uniformly mixed at the mass ratio of 30:5:50:15 under the normal temperature liquid phase to obtain the mixed refrigerant.
Example 3
3-fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32)) are physically and uniformly mixed at the mass ratio of 30:10:50:10 under the normal temperature liquid phase to obtain the mixed refrigerant.
Example 4
3-fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32)) are physically and uniformly mixed at the mass ratio of 25:10:45:20 under the normal temperature liquid phase to obtain the mixed refrigerant.
Example 5
3-fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32)) are physically and uniformly mixed according to the mass ratio of 20:10:50:20 at the normal temperature liquid phase to obtain the mixed refrigerant.
Example 6
3-fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32)) are physically and uniformly mixed at the mass ratio of 15:10:55:20 under the normal temperature liquid phase to obtain the mixed refrigerant.
Example 7
The four components of fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32) are physically and uniformly mixed according to the mass ratio of 15:5:60:20 under the normal temperature liquid phase to obtain the mixed refrigerant.
Example 8
3-fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32)) are physically and uniformly mixed at the mass ratio of 15:5:70:10 under the normal temperature liquid phase to obtain the mixed refrigerant.
Comparative example 1
3-fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32)) are physically and uniformly mixed at the mass ratio of 5:10:65:20 under the normal temperature liquid phase to obtain the mixed refrigerant.
Comparative example 2
The 3-fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32)) are physically and uniformly mixed at the mass ratio of 35:5:40:20 under the normal temperature liquid phase to obtain the mixed refrigerant.
Comparative example 3
3-fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32)) are physically and uniformly mixed at the mass ratio of 20:15:40:25 under the normal temperature liquid phase to obtain the mixed refrigerant.
Comparative example 4
3-fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32)) are physically and uniformly mixed at the mass ratio of 20:10:65:5 under the normal temperature liquid phase to obtain the mixed refrigerant.
Comparative example 5
3-fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32)) are physically and uniformly mixed according to the mass ratio of 35:10:35:20 at the normal temperature liquid phase to obtain the mixed refrigerant.
Comparative example 6
3-fluoropropene (R1261 zf), trifluoroiodomethane (R13I 1), propane (R290) and difluoromethane (R32)) are physically and uniformly mixed at the mass ratio of 10:5:75:10 under the normal temperature liquid phase to obtain the mixed refrigerant.
The results of comparing the refrigeration cycle performance of the refrigeration system loop with the relative thermal performance of R290 (i.e., the relative capacity and the relative efficiency COP) obtained by the calculation in the above examples are shown in tables 2 to 3, using the system of FIG. 1, in the refrigeration zone temperature of 5 ℃, the refrigeration zone temperature of-18 ℃, the isentropic efficiency of 0.7, the superheat degree of 5 ℃, the supercooling degree of 5 ℃ and the ambient temperature of 35 ℃.
As can be seen from tables 2 to 3, the mixed refrigerant provided by the application can be used in a dual-temperature refrigerating system, and the thermodynamic cycle performance coefficient and the environmental protection property are superior to those of R290.
Table 2 basic parameters of the mixed working medium
| Refrigerant and method for producing the same | Molecular weight g/mol | Critical temperature (DEG C) | Critical pressure Mpa | GWP |
| R290 | 44.1 | 96.74 | 4.25 | 3 |
| Example 1 | 78.01 | 107.96 | 5.41 | 143 |
| Example 2 | 66.97 | 107.86 | 5.06 | 109 |
| Example 3 | 71.07 | 109.62 | 4.78 | 75 |
| Example 4 | 77.26 | 106.25 | 5.43 | 142 |
| Example 5 | 76.46 | 103.63 | 5.46 | 141 |
| Example 6 | 75.67 | 101.09 | 5.48 | 140 |
| Example 7 | 74.86 | 98.62 | 5.51 | 139 |
| Example 8 | 63.78 | 99.05 | 5.16 | 70 |
| Comparative example 1 | 74.06 | 96.21 | 5.54 | 137 |
| Comparative example 2 | 71.27 | 109.69 | 5.37 | 137 |
| Comparative example 3 | 87.55 | 103.42 | 5.80 | 170 |
| Comparative example 4 | 66.00 | 106.18 | 4.49 | 36 |
| Comparative example 5 | 78.80 | 111.73 | 5.38 | 137 |
| Comparative example 6 | 60.28 | 99.89 | 4.86 | 70 |
Table 3 basic parameters of the mixed working medium
Based on the results of comparative examples 1 and 2, the above-mentioned multi-temperature zone refrigeration system has a certain proportion of requirements for mixed refrigerant, and the first component is calculated to be more suitable at 15% -30%, and the cooling capacity of the high-temperature evaporator 5 cannot meet the requirements if the proportion is too small. If the ratio is too large, the cooling capacity of the high temperature evaporator 5 cannot meet the requirement.
Considering cost and combustibility, and combining the detection result of comparative example 3, the second component is more suitable at 5% -10%, the proportion is too much, and the overall cost of the refrigerant is too high; too small a ratio, the flame retardant effect is weak. And if the fourth component is too much, the environmental protection requirement of GWP less than 150 is not satisfied.
The multi-temperature-zone refrigerating system has a certain proportion of requirements on the mixed refrigerant, and the detection result of the comparative example 4 is combined, so that the third component is more suitable at 10% -20% by calculation, and the cold capacity of the low-temperature evaporator 4 cannot meet the requirements if the proportion is too small.
Because the multi-temperature-zone refrigerating system has a certain proportion of requirements on the mixed refrigerant, and the detection result of the comparative example 5 is combined, the fourth component is calculated to be more proper at 40% -70%, and the cold capacity of the low-temperature evaporator 4 cannot meet the requirements due to too small proportion. If the ratio is too large, the cooling capacity of the low-temperature evaporator 4 cannot be satisfied.
While the COP coefficient of performance of all comparative examples was substantially lower than that of the examples.
As can be seen from Table 3, when the mixed working medium provided by the application is used for a multi-temperature-zone refrigerating system, the volume refrigerating capacity and the COP (coefficient of performance) value of the mixed working medium can be used as a high-environment-friendly refrigerant for a multi-temperature-zone refrigerator due to an R290 refrigerant system.
The application adopts the mixed refrigerant, has the characteristic of balancing the physical properties of the refrigerant, is suitable for a refrigerator with multiple temperature areas, uses the non-azeotropic mixed refrigerant, can increase the matching degree of a heat exchanger, reduces the heat exchange loss in the heat transfer process, improves the evaporating temperature, and further improves the energy efficiency of the system.
It is easy to understand by those skilled in the art that the above embodiments can be freely combined and overlapped without conflict.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application. The foregoing is merely a preferred embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the application.
Claims (10)
1. A refrigerant is characterized by being formed by combining a first component, a second component, a third component and a fourth component;
the first component comprises 3-fluoropropene, the second component comprises trifluoroiodomethane, the third component comprises difluoromethane, and the fourth component comprises propane;
the first component, the second component, the third component and the fourth component are sequentially prepared from the following components in percentage by mass: 15% -30%, 5% -10%, 10% -20% and 40% -70%.
2. The refrigerant according to claim 1, wherein the first component, the second component, the third component and the fourth component are sequentially in mass percent: 15% -25%, 7% -10%, 12% -20% and 45% -70%.
3. The refrigerant according to claim 2, wherein the first component, the second component, the third component and the fourth component are sequentially in mass percent: 18% -25%, 8% -10%, 15% -20% and 45% -65%.
4. The refrigerant according to claim 3, wherein the first component, the second component, the third component and the fourth component are sequentially in mass percent: 18% -23%, 8% -10%, 15% -20% and 45% -60%.
5. The refrigerant as set forth in claim 4, wherein said first, second, third and fourth components are in the following order in mass percent: 20% -23%, 8% -10%, 18% -20% and 50% -60%.
6. The refrigerant according to claim 5, wherein the first component, the second component, the third component and the fourth component are sequentially in mass percent: 20% -23%, 8% -10%, 18% -20% and 50% -55%.
7. The refrigerant according to claim 6, wherein the first component, the second component, the third component and the fourth component are sequentially in mass percent: 20%, 10%, 20% and 50%.
8. A method for producing the refrigerant according to any one of claims 1 to 7, comprising:
preparing a first component, a second component, a third component and a fourth component;
and (3) at normal temperature, the first component, the second component, the third component and the fourth component are physically and uniformly mixed.
9. A refrigeration system, characterized in that a refrigerant as defined in any one of claims 1 to 7 is used as a refrigerant.
10. A refrigeration system according to claim 9, characterized in that it comprises a compressor (1), a throttling device (2), a condenser (3) and an evaporator, which are cyclically connected; the evaporator comprises a low-temperature evaporator (4) and a high-temperature evaporator (5), one end of the low-temperature evaporator (4) is connected with the throttling device (2), the other end of the low-temperature evaporator is connected with the high-temperature evaporator (5), and the other end of the high-temperature evaporator (5) is connected with the compressor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210752163.XA CN115181547B (en) | 2022-06-29 | 2022-06-29 | Refrigerant, preparation method thereof and refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210752163.XA CN115181547B (en) | 2022-06-29 | 2022-06-29 | Refrigerant, preparation method thereof and refrigeration system |
Publications (2)
| Publication Number | Publication Date |
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| CN115181547A CN115181547A (en) | 2022-10-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965082A (en) * | 2012-11-30 | 2013-03-13 | 中国地质大学（武汉） | Working substance pair for absorptive thermal cycling system with heat source temperature ranging from 60 to 130 DEG C |
| CN104449580A (en) * | 2013-09-24 | 2015-03-25 | 中化蓝天集团有限公司 | Composition containing HFC-161 and stabilizer |
| CN109897607A (en) * | 2019-02-28 | 2019-06-18 | 浙江大学 | A kind of heat pump mixed working medium and application |
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| US20080121837A1 (en) * | 2003-10-27 | 2008-05-29 | Honeywell International, Inc. | Compositions containing fluorine substituted olefins |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965082A (en) * | 2012-11-30 | 2013-03-13 | 中国地质大学（武汉） | Working substance pair for absorptive thermal cycling system with heat source temperature ranging from 60 to 130 DEG C |
| CN104449580A (en) * | 2013-09-24 | 2015-03-25 | 中化蓝天集团有限公司 | Composition containing HFC-161 and stabilizer |
| CN109897607A (en) * | 2019-02-28 | 2019-06-18 | 浙江大学 | A kind of heat pump mixed working medium and application |
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