CN113817447B - Quaternary environment-friendly mixed refrigerant, preparation method thereof and refrigeration system - Google Patents
Quaternary environment-friendly mixed refrigerant, preparation method thereof and refrigeration system Download PDFInfo
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- CN113817447B CN113817447B CN202111033897.4A CN202111033897A CN113817447B CN 113817447 B CN113817447 B CN 113817447B CN 202111033897 A CN202111033897 A CN 202111033897A CN 113817447 B CN113817447 B CN 113817447B
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 93
- 238000005057 refrigeration Methods 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title abstract description 7
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 claims abstract description 68
- NPNPZTNLOVBDOC-UHFFFAOYSA-N 1,1-difluoroethane Chemical compound CC(F)F NPNPZTNLOVBDOC-UHFFFAOYSA-N 0.000 claims abstract description 54
- FXRLMCRCYDHQFW-UHFFFAOYSA-N 2,3,3,3-tetrafluoropropene Chemical compound FC(=C)C(F)(F)F FXRLMCRCYDHQFW-UHFFFAOYSA-N 0.000 claims abstract description 37
- MIZLGWKEZAPEFJ-UHFFFAOYSA-N 1,1,2-trifluoroethene Chemical group FC=C(F)F MIZLGWKEZAPEFJ-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229940051271 1,1-difluoroethane Drugs 0.000 claims abstract description 33
- 239000007791 liquid phase Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims 2
- 230000000052 comparative effect Effects 0.000 description 15
- 230000007613 environmental effect Effects 0.000 description 9
- 238000001816 cooling Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical group FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004781 supercooling 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
- C09K5/045—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 containing only fluorine as halogen
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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
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
- C09K2205/122—Halogenated hydrocarbons
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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
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
- C09K2205/126—Unsaturated fluorinated hydrocarbons
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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
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/22—All components of a mixture being fluoro compounds
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The application relates to the technical field of refrigerants, in particular to a quaternary environment-friendly mixed refrigerant, a preparation method of the quaternary environment-friendly mixed refrigerant and a refrigeration system. The quaternary environment-friendly mixed refrigerant comprises trifluoroethylene, 2,3,3, 3-tetrafluoropropene, 1-difluoroethane and difluoromethane, the GWP of the quaternary environment-friendly mixed refrigerant is not more than 21% of the GWP of R410A refrigerant, and the ODP value of the quaternary environment-friendly mixed refrigerant is 0. The quaternary environment-friendly mixed refrigerant comprises, by mole percent, 10-75% of trifluoroethylene, 5-15% of 2,3,3, 3-tetrafluoropropene, 5-10% of 1, 1-difluoroethane and 10-75% of difluoromethane. The preparation method of the quaternary environment-friendly mixed system comprises the following steps: and mixing and stirring the components prepared by the quaternary environment-friendly mixing system at normal temperature and normal pressure in a liquid phase state to obtain the quaternary environment-friendly mixing system. The quaternary environment-friendly mixed refrigerant provided by the invention not only has the environment-friendly characteristic of low GWP, but also has the refrigerating capacity per unit volume and the system performance coefficient which are similar to or better than those of R410A refrigerant, and can better replace R410A refrigerant.
Description
Technical Field
The application relates to the technical field of refrigerants, in particular to a quaternary environment-friendly mixed refrigerant, a preparation method of the quaternary environment-friendly mixed refrigerant and a refrigeration system.
Background
The refrigerant R410A for domestic air-conditioning has the GWP of 2088 and the ODP of 0, and the use of the refrigerant R410A is greatly limited due to the technical problem of poor environmental protection performance because the high GWP value is limited to be used in developed countries such as Europe, Japan and the like.
Disclosure of Invention
In order to solve the technical problem of poor environmental protection performance of the R410A refrigerant in the prior art, the primary object of the present invention is to provide an environmental protection mixed refrigerant, which is carefully screened from multiple dimensions of environmental protection performance and thermodynamic performance of the refrigerant to form a substitute refrigerant with lower GWP and equivalent thermodynamic performance compared with the R410A refrigerant, and to provide a preparation method of the environmental protection mixed refrigerant and a refrigeration system using the refrigerant.
In order to achieve the above object, according to a first aspect of the present invention, there is provided a quaternary environment-friendly mixed refrigerant.
The quaternary environment-friendly mixed refrigerant according to the embodiment of the application, which comprises trifluoroethylene, 2,3,3, 3-tetrafluoropropene, 1-difluoroethane and difluoromethane, has a GWP of not more than 21% of that of R410A, and has an ODP value of 0.
Further, the quaternary environment-friendly mixed refrigerant comprises, by mole percent, 10-75% of trifluoroethylene, 5-15% of 2,3,3, 3-tetrafluoropropene, 5-10% of 1, 1-difluoroethane and 10-75% of difluoromethane.
Further, the quaternary environment-friendly mixed refrigerant comprises 15-70% of trifluoroethylene, 5% of 2,3,3, 3-tetrafluoropropene, 5% of 1, 1-difluoroethane and 15-75% of difluoromethane in percentage by mole.
Further, the quaternary environment-friendly mixed refrigerant comprises 25-60% of trifluoroethylene, 5% of 2,3,3, 3-tetrafluoropropene, 5-10% of 1, 1-difluoroethane and 25-60% of difluoromethane in percentage by mole.
Further, the quaternary environment-friendly mixed refrigerant comprises 35-50% of trifluoroethylene, 10% of 2,3,3, 3-tetrafluoropropene, 5% of 1, 1-difluoroethane and 35-50% of difluoromethane in percentage by mole.
Further, the quaternary environment-friendly mixed refrigerant comprises 75% of trifluoroethylene, 5% of 2,3,3, 3-tetrafluoropropene, 10% of 1, 1-difluoroethane and 10% of difluoromethane in percentage by mole.
Further, the quaternary environment-friendly mixed refrigerant comprises 70% of trifluoroethylene, 5% of 2,3,3, 3-tetrafluoropropene, 10% of 1, 1-difluoroethane and 15% of difluoromethane in percentage by mole.
Further, the quaternary environment-friendly mixed refrigerant comprises 65% of trifluoroethylene, 5% of 2,3,3, 3-tetrafluoropropene, 5% of 1, 1-difluoroethane and 25% of difluoromethane in mole percentage.
In order to achieve the above object, according to a second aspect of the present invention, there is provided a method for preparing a quaternary environment-friendly mixed system, for preparing the quaternary environment-friendly mixed system provided in the first aspect of the embodiments of the present invention, the method comprising the steps of: and mixing and stirring the components prepared by the quaternary environment-friendly mixing at normal temperature and normal pressure in a liquid phase state to obtain the quaternary environment-friendly mixed refrigerant.
In order to achieve the above object, according to a third aspect of the present invention, there is also provided a refrigeration system, including a working medium, where the working medium includes the quaternary environment-friendly hybrid system provided in the first aspect of the embodiments of the present invention.
The quaternary environment-friendly mixed refrigerant provided by the invention not only has the environment-friendly characteristic of low GWP, but also has the refrigerating capacity per unit volume and the system performance coefficient which are similar to or better than those of R410A, and can better replace R410A refrigerant.
Detailed Description
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such article or apparatus. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.
The preparation method of the quaternary environment-friendly mixed refrigerant provided by the embodiment of the invention is that the components of the quaternary environment-friendly mixed refrigerant, namely trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1-difluoroethane (R152a) and difluoromethane (R32), are physically mixed into a quaternary mixture at normal temperature and normal pressure in a liquid phase state according to the corresponding molar ratio, and the quaternary environment-friendly mixed refrigerant can be specifically mixed and stirred at the room temperature and the liquid phase state to prepare the quaternary environment-friendly mixed refrigerant. The basic parameters of each component substance in the quaternary environment-friendly mixed refrigerant in the embodiment of the invention are shown in the table 1.
TABLE 1 basic parameters of the components in the quaternary environment-friendly mixed refrigerant
In order to make the technical solutions better understood by those skilled in the art, the technical solutions will be clearly and completely described below in conjunction with the embodiments of the present application, and the described embodiments are only a part of the embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application. The present application will be described in detail with reference to preferred embodiments. Specific examples and comparative examples are given below, in which the proportions of the components are all in mole percent, the sum of the mole percent of the component substances of each quaternary environment-friendly mixed refrigerant is 100%, and the constitutions of the specific examples and comparative examples are shown in table 2.
Example 1
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 10:10:5:75 to obtain the quaternary environment-friendly mixed refrigerant.
Example 2
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 15:5:5:75 to obtain the quaternary environment-friendly mixed refrigerant.
Example 3
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 20:15:5:60 to obtain the quaternary environment-friendly mixed refrigerant.
Example 4
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 25:5:5:65, so that the quaternary environment-friendly mixed refrigerant is obtained.
Example 5
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 30:5:5:60 to obtain the quaternary environment-friendly mixed refrigerant.
Example 6
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 35:10:5:50, so that the quaternary environment-friendly mixed refrigerant is obtained.
Example 7
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 40:5:5:50, so that the quaternary environment-friendly mixed refrigerant is obtained.
Example 8
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure in a liquid phase according to a molar ratio of 45:5:5:45, so that the quaternary environment-friendly mixed refrigerant is obtained.
Example 9
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 50:10:5:35, so that the quaternary environment-friendly mixed refrigerant is obtained.
Example 10
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 55:5:5:35, so that the quaternary environment-friendly mixed refrigerant is obtained.
Example 11
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure in a liquid phase according to a molar ratio of 60:5:10:25 to obtain the quaternary environment-friendly mixed refrigerant.
Example 12
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure in a liquid phase according to a molar ratio of 65:5:5:25, so that the quaternary environment-friendly mixed refrigerant is obtained.
Example 13
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 70:5:10:15, so that the quaternary environment-friendly mixed refrigerant is obtained.
Example 14
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 75:5:10:10 to obtain the quaternary environment-friendly mixed refrigerant.
Comparative example 1
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 5:35:30:30, and the quaternary environment-friendly mixed refrigerant is obtained.
Comparative example 2
Three fluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) (R13I1) are physically and uniformly mixed according to a molar ratio of 5:40:30:25 under normal temperature and pressure and liquid phase to obtain the quaternary environment-friendly mixed refrigerant.
Comparative example 3
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed according to the molar ratio of 5:50:5:40 under normal temperature and pressure liquid phase to obtain the quaternary environment-friendly mixed refrigerant.
Comparative example 4
The four components of trifluoroethylene (R1123), 2,3,3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and difluoromethane (R32) are physically and uniformly mixed at the normal temperature and pressure according to the molar ratio of 10:25:55:10 to obtain the quaternary environment-friendly mixed refrigerant.
TABLE 2 composition of ingredients of each example and comparative example
In order to compare the effects of the embodiments and the comparative examples, the selected design working condition is a refrigeration working condition, specifically: the evaporation temperature was 10 ℃, the condensation temperature was 40 ℃, the degree of superheat was 5 ℃, the degree of supercooling was 5 ℃ and the adiabatic efficiency of the compressor was 0.75, and the cycle performance parameters in the refrigeration system were measured and calculated using the refrigerants of examples 1 to 14, comparative examples 1 to 4 and R410A described above, respectively, and the GWP values, relative specific cooling capacity Qv (ratio of cooling capacity per unit volume to R410A) and relative coefficient of performance COP (ratio of coefficient of performance to R410A) and other indices of the refrigerants obtained in the respective examples and comparative examples were compared and recorded in table 3, and further, the ODP values of the refrigerants of examples 1 to 14 were measured and were 0.
As can be seen from table 3, the environmental performance of the quaternary environment-friendly mixed refrigerant provided by the present invention is far better than that of R410A, wherein the GWP of the quaternary environment-friendly mixed refrigerant obtained in example 1 is the highest, and is only 21% of the GWP of R410A refrigerant, and the environmental performance is excellent. Specifically, the GWP of all refrigerant formulas is less than 434 and far lower than the GWP of R410A refrigerant, so that the refrigerant can completely meet the target of carbon emission reduction in the Bulgarian amendments of Montreal protocol and has better environmental protection characteristic.
TABLE 3 Experimental data for each of the examples, comparative examples, and R410A refrigerant
Meanwhile, the thermal performance of the quaternary environment-friendly mixed refrigerant provided by the invention is better or equivalent to that of the R410A refrigerant, the volumetric refrigerating capacity of all the embodiments is improved by 10% at most compared with that of the R410A refrigerant, the relative performance coefficients of the quaternary environment-friendly mixed refrigerant obtained by all the embodiments are more than 0.95, and the refrigerating capacity and the energy efficiency are basically equivalent to or better than those of the R410A refrigerant, so that the quaternary environment-friendly mixed refrigerant can be used as an environment-friendly refrigerant for replacing the R410A refrigerant.
If one or more of the four components of the quaternary environment-friendly mixed refrigerant is not in the molar ratios provided by the application, for example, the content of trifluoroethylene (R1123) is lower in comparative example 1 and comparative example 2, and the content of 2,3,3, 3-tetrafluoropropene (R1234yf) and 1, 1-difluoroethane (R152a) is higher, so that the refrigerating capacity per unit volume of the quaternary environment-friendly mixed refrigerant is lower; as compared with comparative example 3, the content of trifluoroethylene (R1123) is lower, and the content of 2,3,3, 3-tetrafluoropropene (R1234yf) is higher, so that the refrigerating capacity per unit volume of the quaternary environment-friendly mixed refrigerant is lower; as in comparative example 4, the contents of 2,3,3, 3-tetrafluoropropene (R1234yf) and 1, 1-difluoroethane (R152a) were higher, resulting in lower relative refrigerating capacity per unit volume of the quaternary environment-friendly mixed refrigerant.
In conclusion, the quaternary mixed refrigerant provided by the invention not only has the environmental protection characteristic of low GWP, but also has the thermal performance equivalent to or even better than that of R410A refrigerant, and can better replace R410A refrigerant.
The embodiment of the invention also correspondingly protects a refrigeration system using the quaternary mixed refrigerant provided by the embodiment of the invention as the working medium, the refrigeration system can be applied to electric appliances including but not limited to air conditioners, refrigerators, dehumidifiers and the like, and other components and working principles of the refrigeration system are applicable to the prior art and are not described herein again.
Some embodiments in this specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. The quaternary environment-friendly mixed refrigerant is characterized by comprising 30 mol percent of trifluoroethylene, 5 mol percent of 2,3,3, 3-tetrafluoropropene, 5 mol percent of 1, 1-difluoroethane and 60 mol percent of difluoromethane; or
Consists of 40% trifluoroethylene, 5% 2,3,3, 3-tetrafluoropropene, 5% 1, 1-difluoroethane and 50% difluoromethane; or
Consists of 45 percent of trifluoroethylene, 5 percent of 2,3,3, 3-tetrafluoropropene, 5 percent of 1, 1-difluoroethane and 45 percent of difluoromethane; or
Consists of 55 percent of trifluoroethylene, 5 percent of 2,3,3, 3-tetrafluoropropene, 5 percent of 1, 1-difluoroethane and 35 percent of difluoromethane; or
Consists of 65% trifluoroethylene, 5% 2,3,3, 3-tetrafluoropropene, 5% 1, 1-difluoroethane and 25% difluoromethane.
2. The method for preparing the quaternary environment-friendly mixed refrigerant as claimed in claim 1, wherein the method comprises the following steps: and mixing and stirring the components of the quaternary environment-friendly mixed refrigerant in a normal-temperature normal-pressure liquid phase state to obtain the quaternary environment-friendly mixed refrigerant.
3. A refrigeration system comprising a working fluid, wherein the working fluid comprises the quaternary environment-friendly mixed refrigerant of claim 1.
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