CN113980649B - Mixed refrigerant and air conditioning system - Google Patents
Mixed refrigerant and air conditioning system Download PDFInfo
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- CN113980649B CN113980649B CN202111321950.0A CN202111321950A CN113980649B CN 113980649 B CN113980649 B CN 113980649B CN 202111321950 A CN202111321950 A CN 202111321950A CN 113980649 B CN113980649 B CN 113980649B
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 71
- 238000004378 air conditioning Methods 0.000 title claims abstract description 20
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical group CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 149
- NPNPZTNLOVBDOC-UHFFFAOYSA-N 1,1-difluoroethane Chemical group CC(F)F NPNPZTNLOVBDOC-UHFFFAOYSA-N 0.000 claims abstract description 107
- 229940051271 1,1-difluoroethane Drugs 0.000 claims abstract description 75
- 239000001294 propane Substances 0.000 claims abstract description 75
- VPAYJEUHKVESSD-UHFFFAOYSA-N trifluoroiodomethane Chemical group FC(F)(F)I VPAYJEUHKVESSD-UHFFFAOYSA-N 0.000 claims abstract description 75
- JRHMNRMPVRXNOS-UHFFFAOYSA-N trifluoro(methoxy)methane Chemical compound COC(F)(F)F JRHMNRMPVRXNOS-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000007791 liquid phase Substances 0.000 claims description 67
- -1 alkyl propane Chemical compound 0.000 claims 1
- FXRLMCRCYDHQFW-UHFFFAOYSA-N 2,3,3,3-tetrafluoropropene Chemical compound FC(=C)C(F)(F)F FXRLMCRCYDHQFW-UHFFFAOYSA-N 0.000 abstract description 36
- 230000007613 environmental effect Effects 0.000 abstract description 8
- 238000002156 mixing Methods 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000005431 greenhouse gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect 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
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 230000002195 synergetic effect Effects 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
-
- 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
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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
- C09K2205/11—Ethers
- C09K2205/112—Halogenated ethers
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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
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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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- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
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Abstract
The present disclosure provides a mixed refrigerant and an air conditioning system, the mixed refrigerant comprising a first component, a second component, a third component, and a fourth component, wherein: the first component is trifluoroiodomethane, the second component is propane, the third component is one of 2,3,3, 3-tetrafluoropropene and trifluoromethyl methyl ether, and the fourth component is 1, 1-difluoroethane. The mixed refrigerant disclosed by the invention can be used as a substitute refrigerant of R134a, the GWP of the mixed refrigerant is less than 80, the ODP is 0, the refrigerant has obvious environmental protection advantages, and meanwhile, the thermal performance of the environment-friendly mixed refrigerant is equivalent to or even higher than that of R134a, so that the technical problem of high GWP of R134a refrigerant can be effectively solved while the thermal performance of the refrigerant is equivalent to or even better than that of R134 a.
Description
Technical Field
The disclosure belongs to the technical field of refrigeration, and particularly relates to a mixed refrigerant and an air conditioning system.
Background
The chinese government work report in 2021 indicated that carbon peak was achieved in 2030 and carbon neutralization was achieved in 2060, while the fluorine-containing gas as the main component of the refrigerant accounted for about 3% of the total greenhouse gas, corresponding to 17.5 million tons of CO2 equivalent emissions, and reducing the emission of fluorine-containing gas became one of the effective routes for achieving carbon neutralization. In addition, in 9 months in 2021, the Mingjiali revised protocol of Montreal protocol takes effect on China formally, and the control of non-carbon dioxide greenhouse gases such as hydrofluorocarbons is further strengthened. 1,1, 1, 2-tetrafluoroethane (R134a) is because of having non-toxic, incombustible, non-corrosive, material compatibility better characteristic, so widely used in fields such as the air conditioner of the car and some other refrigerating systems, but with the carbon neutral carbon reaches the peak, Bu Jia Li amending case national policy's enactment and promotion, make HFCs refrigerant such as R134a face cut down and eliminate, therefore it is necessary to look for a kind of environmental protection performance well, thermal property and R134a are equivalent to or even better refrigerant to substitute, in order to meet refrigerant environmental protection and high-efficient requirement to the maximum extent.
Because the refrigerant R134a in the prior art has the technical problems of high GWP value, poor environmental protection performance and the like, the mixed refrigerant and the air-conditioning system are researched and designed in the disclosure.
Disclosure of Invention
Therefore, the technical problem to be solved by the present disclosure is to overcome the defect of the prior art that the refrigerant cannot guarantee higher refrigerant thermodynamic performance and low GWP value at the same time, so as to provide a mixed refrigerant and an air conditioning system.
The present disclosure provides a mixed refrigerant, wherein:
the mixed refrigerant comprises a first component, a second component, a third component and a fourth component, wherein: the first component is trifluoroiodomethane, the second component is propane, the third component is one of 2,3,3, 3-tetrafluoropropene and trifluoromethyl methyl ether, and the fourth component is 1, 1-difluoroethane.
In some embodiments, the first component occupies 5 to 50 mol% of the mixed refrigerant, the second component occupies 10 to 75 mol% of the mixed refrigerant, the third component occupies 5 to 20 mol% of the mixed refrigerant, and the fourth component occupies 10 to 80 mol% of the mixed refrigerant, in terms of mol%.
In some embodiments, the molar ratio of trifluoroiodomethane, propane, trifluoromethyl methyl ether, and 1, 1-difluoroethane is 5:10:5:80 in the state of a normal-temperature liquid phase; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 5:35:10: 50; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 10:60:5: 25; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 10:75:5: 10.
In some embodiments, the molar ratio of trifluoroiodomethane, propane, trifluoromethyl methyl ether, and 1, 1-difluoroethane is 15:20:5:60 in the ambient liquid phase state; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 20:40:20: 20; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 30:50:10: 10; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 40:35:5: 20; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 5:25:5: 65.
In some embodiments, the molar ratio of trifluoroiodomethane, propane, 2,3,3, 3-tetrafluoropropene and 1, 1-difluoroethane is 5:10:5:80 in the state of normal-temperature liquid phase; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 5:30:5: 60; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 10:75:5: 10; or,
in the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 15:55:5: 25.
In some embodiments, the molar ratio of trifluoroiodomethane, propane, 2,3,3, 3-tetrafluoropropene, and 1, 1-difluoroethane is 20:40:5: 35; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 30:35:20: 15; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 40:15:5: 40; or,
in the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 45:25:10: 20.
In some embodiments, the molar ratio of trifluoroiodomethane, propane, 2,3,3, 3-tetrafluoropropene, and 1, 1-difluoroethane is 50:25:5:20 in the ambient liquid phase state.
The present disclosure also provides an air conditioning system comprising the mixed refrigerant of any of the preceding.
In some embodiments, the air conditioning system is a vehicle air conditioning system.
The mixed refrigerant and air conditioning system provided by the disclosure has the following beneficial effects:
the present disclosure provides a quaternary environment-friendly mixed refrigerant, which includes a first component, a second component, a third component, and a fourth component, wherein: the first component is trifluoroiodomethane (R13I1), the second component is propane (R290), the third component is one of 2,3,3, 3-tetrafluoropropene (R1234yf) or trifluoromethyl methyl ether (RE143a), the fourth component is 1, 1-difluoroethane (R152a), the refrigerant can be used as a substitute refrigerant of R134a, the GWP of the mixed refrigerant is less than 80, the ODP is 0, the environmental protection performance is excellent, meanwhile, the coefficient of performance of thermal (COP) of the environmental protection mixed refrigerant is equivalent to that of R134a, and the volumetric refrigeration capacity can be improved by 30% at most compared with that of R134a, so that the technical problem of high GWP value of the R134a refrigerant can be effectively solved while the thermodynamic performance of the refrigerant is equivalent to or even better than that of R134 a.
Detailed Description
The present disclosure provides a quaternary environment-friendly mixed refrigerant, which comprises a first component, a second component, a third component and a fourth component, wherein: the first component is trifluoroiodomethane (R13I1), the second component is propane (R290), the third component is one of 2,3,3, 3-tetrafluoropropene (R1234yf) or trifluoromethyl methyl ether (RE143a), and the fourth component is 1, 1-difluoroethane (R152 a).
The disclosure provides a quaternary environment-friendly mixed refrigerant (trifluoroiodomethane (R13I1), propane (R290), 2,3,3, 3-tetrafluoropropene (R1234yf) or trifluoromethyl methyl ether (RE143a), 1, 1-difluoroethane (R152a), which can be used as a substitute refrigerant of R134a, wherein GWP of the mixed refrigerant is less than 80, ODP is 0, and the environment-friendly mixed refrigerant has excellent environment-friendly performance, and meanwhile, thermodynamic Coefficient (COP) of the environment-friendly mixed refrigerant is equivalent to R134a, and volume capacity is improved by 30% at most compared with refrigeration of R134a, so that the technical problem of high GWP value of R134a refrigerant can be effectively solved while thermodynamic performance of the refrigerant is equivalent to or better than that of R134 a.
The environment-friendly mixed refrigerant has the following advantages:
(1) the GWP of the environment-friendly mixed refrigerant is less than 80, the ODP is 0, and the environment-friendly performance is excellent;
(2) the environment-friendly mixed refrigerant has good thermodynamic performance, the coefficient of performance (COP) is equivalent to that of R134a, and the volume refrigerating capacity can be improved by 30% at most compared with that of R134 a.
The invention provides a ternary environment-friendly mixed refrigerant capable of replacing R134 a. The preparation method comprises the step of physically mixing monoiodotrifluoromethane (R13I1), propane (R290), 2,3,3, 3-tetrafluoropropene (R1234yf), trifluoromethyl methyl ether (RE143a) and 1, 1-difluoroethane (R152a) into a quaternary mixture at normal temperature in a liquid phase state according to corresponding molar ratios. The basic parameters of each component are shown in Table 1.
In some embodiments, the first component occupies 5 to 50 mol% of the mixed refrigerant, the second component occupies 10 to 75 mol% of the mixed refrigerant, the third component occupies 5 to 20 mol% of the mixed refrigerant, and the fourth component occupies 10 to 80 mol% of the mixed refrigerant, in terms of mol%. The mixed refrigerant of the present invention can further reduce GWP by setting the above four components to the above preferred value ranges, while still further improving COP and volumetric cooling capacity, comparable to or even improved in comparison with R134 a.
TABLE 1 basic parameters of the constituent substances in the working mixture
Example 1
Under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane (R13I1), the propane (R290), the trifluoromethyl methyl ether (RE143a) and the 1, 1-difluoroethane (R152a) is 5:10:5: 80; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), trifluoromethyl methyl ether (RE143a) and 1, 1-difluoroethane (R152a) at a normal temperature and a liquid phase according to a molar ratio of 5:10:5: 80.
Example 2
Under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane (R13I1), the propane (R290), the trifluoromethyl methyl ether (RE143a) and the 1, 1-difluoroethane (R152a) is 5:35:10: 50; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), trifluoromethyl methyl ether (RE143a) and 1, 1-difluoroethane (R152a) at a molar ratio of 5:35:10:50 in a normal-temperature liquid phase.
Example 3
In a state of a normal-temperature liquid phase, a molar ratio of the trifluoroiodomethane (R13I1), the propane (R290), the trifluoromethyl methyl ether (RE143a), and the 1, 1-difluoroethane (R152a) is 56: 60:5:25, and a molar ratio thereof is 56:4:4: 36. The environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), trifluoromethyl methyl ether (RE143a) and 1, 1-difluoroethane (R152a) at a molar ratio of 10:60:5:25 under a normal-temperature liquid phase.
Example 4
In a state of a normal-temperature liquid phase, the molar ratio of trifluoroiodomethane (R13I1), propane (R290), trifluoromethyl methyl ether (RE143a) and 1, 1-difluoroethane (R152a) is 10:75:5: 10. The environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), trifluoromethyl methyl ether (RE143a) and 1, 1-difluoroethane (R152a) at a molar ratio of 10:75:5:10 in a normal-temperature liquid phase.
Example 5
In a normal-temperature liquid phase state, the molar ratio of the trifluoroiodomethane (R13I1), the propane (R290), the trifluoromethyl methyl ether (RE143a) and the 1, 1-difluoroethane (R152a) is 15:20:5: 60; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), trifluoromethyl methyl ether (RE143a) and 1, 1-difluoroethane (R152a) at a normal temperature and a liquid phase according to a molar ratio of 15:20:5: 60.
Example 6
Under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 20:40:20: 20; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), trifluoromethyl methyl ether (RE143a) and 1, 1-difluoroethane (R152a) at a normal temperature and a liquid phase according to a molar ratio of 20:40:20: 20.
Example 7
Under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 30:50:10: 10; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), trifluoromethyl methyl ether (RE143a) and 1, 1-difluoroethane (R152a) at a molar ratio of 30:50:10:10 under a normal-temperature liquid phase.
Example 8
Under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 40:35:5: 20. The environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), trifluoromethyl methyl ether (RE143a) and 1, 1-difluoroethane (R152a) at a normal-temperature liquid phase according to a molar ratio of 40:35:5: 20.
Example 9
Under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane (R13I1), the propane (R290), the trifluoromethyl methyl ether (RE143a) and the 1, 1-difluoroethane (R152a) is 5:25:5: 65; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), trifluoromethyl methyl ether (RE143a) and 1, 1-difluoroethane (R152a) at a normal temperature and a liquid phase according to a molar ratio of 5:25:5: 65.
Example 10
Under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 5:10:5: 80; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), 2,3,3, 3-tetrafluoropropene (R1234yf) and 1, 1-difluoroethane (R152a) at a molar ratio of 5:5:10:80 under a normal-temperature liquid phase.
Example 11
Under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 5:30:5: 60; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), 2,3,3, 3-tetrafluoropropene (R1234yf) and 1, 1-difluoroethane (R152a) at a molar ratio of 5:30:5:60 at normal temperature and in a liquid phase.
Example 12
In the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 10:75:5: 10. The environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), 2,3,3, 3-tetrafluoropropene (R1234yf) and 1, 1-difluoroethane (R152a) at a molar ratio of 10:75:5:10 under a normal-temperature liquid phase.
Example 13
In the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 15:55:5: 25; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), 2,3,3, 3-tetrafluoropropene (R1234yf) and 1, 1-difluoroethane (R152a) at a molar ratio of 15:55:5:25 under a normal-temperature liquid phase. .
Example 14
Under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 20:40:5: 35; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), 2,3,3, 3-tetrafluoropropene (R1234yf) and 1, 1-difluoroethane (R152a) at a molar ratio of 20:40:5:35 at normal temperature and in a liquid phase.
Example 15
Under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 30:35:20: 15; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), 2,3,3, 3-tetrafluoropropene (R1234yf) and 1, 1-difluoroethane (R152a) at a molar ratio of 30:35:20:15 at normal temperature and in a liquid phase.
Example 16
In a normal-temperature liquid phase state, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 40:15:5: 40. The environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), 2,3,3, 3-tetrafluoropropene (R1234yf) and 1, 1-difluoroethane (R152a) at a molar ratio of 40:15:5:40 under a normal-temperature liquid phase.
Example 17
Under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 45:25:10: 20; namely, the four components of trifluoroiodomethane (R13I1), propane (R290), 2,3,3, 3-tetrafluoropropene (R1234yf) and 1, 1-difluoroethane (R152a) are physically and uniformly mixed at the normal temperature and liquid phase according to the molar ratio of 45:25:10:20 to obtain the environment-friendly mixed working medium.
Example 18
Under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the 2,3,3, 3-tetrafluoropropene to the 1, 1-difluoroethane is 50:25:5: 20; the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), 2,3,3, 3-tetrafluoropropene (R1234yf) and 1, 1-difluoroethane (R152a) at a molar ratio of 50:25:5:20 under a normal-temperature liquid phase.
Comparative example 1, the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), trifluoromethyl methyl ether (RE143a) and 1, 1-difluoroethane (R152a) at a molar ratio of 75:5:5:15 in a normal-temperature liquid phase.
Comparative example 2, the environment-friendly working mixture was obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), trifluoromethyl methyl ether (RE143a), and 1, 1-difluoroethane (R152a) at a molar ratio of 80:5:5:10 in a liquid phase at room temperature.
Comparative example 3, the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), 2,3,3, 3-tetrafluoropropene (R1234yf) and 1, 1-difluoroethane (R152a) at a molar ratio of 75:5:10:10 in a normal-temperature liquid phase.
Comparative example 4, the environment-friendly mixed working medium is obtained by physically and uniformly mixing four components of trifluoroiodomethane (R13I1), propane (R290), 2,3,3, 3-tetrafluoropropene (R1234yf) and 1, 1-difluoroethane (R152a) at a molar ratio of 80:5:5:10 in a normal-temperature liquid phase.
The results of comparing the GWP and the relative thermal performance (i.e., relative refrigerating capacity per unit volume and relative COP) of the above examples and comparative examples with R134a under the refrigeration conditions (i.e., 10 ℃ evaporation temperature, 40 ℃ condensation temperature, 5 ℃ superheat degree, 5 ℃ supercooling degree, and 0.75 adiabatic efficiency of the compressor) are shown in table 2.
TABLE 2 comparison of Performance of working mixtures with R134a
| Refrigerant | GWP | Relative volume refrigerating capacity | Relative COP |
| R134a | 1300 | 1 | 1 |
| Example 1 | 137 | 1.07 | 1.01 |
| Example 2 | 144 | 1.24 | 0.98 |
| Example 3 | 73 | 1.30 | 0.98 |
| Example 4 | 56 | 1.28 | 0.98 |
| Example 5 | 98 | 1.16 | 1.00 |
| Example 6 | 137 | 1.19 | 0.99 |
| Example 7 | 64 | 1.16 | 0.99 |
| Example 8 | 40 | 1.11 | 1.00 |
| Example 9 | 35 | 1.05 | 1.00 |
| Example 10 | 101 | 1.07 | 1.01 |
| Example 11 | 80 | 1.22 | 0.99 |
| Example 12 | 16 | 1.28 | 0.98 |
| Example 13 | 31 | 1.27 | 0.98 |
| Example 14 | 38 | 1.23 | 0.99 |
| Example 15 | 14 | 1.13 | 0.99 |
| Example 16 | 32 | 1.08 | 1.00 |
| Example 17 | 15 | 1.07 | 1.00 |
| Example 18 | 15 | 1.05 | 1.00 |
| Comparative example 1 | 25 | 0.89 | 1.01 |
| Comparative example 2 | 22 | 0.86 | 1.01 |
| Comparative example 3 | 6 | 0.88 | 1.00 |
| Comparative example 4 | 7 | 0.86 | 1.01 |
As can be seen from Table 2, the research and calculation of the quaternary mixed refrigerant using the mixed working medium to replace R134a provides the combination mode and molar ratio of the substances, and ensures that the substances can play a greater synergistic effect. The GWP of the mixed working medium is less than 150, and the environmental protection performance can meet the basic requirement of carbon neutralization at present.
Meanwhile, the volume refrigerating capacity of the mixed refrigerant provided by the invention is higher than that of R134a, the highest refrigerating capacity is improved by 30% than that of R134a, the relative performance coefficients of all the embodiments are larger than 0.98, the thermal performance is excellent, and the mixed refrigerant can be an environment-friendly refrigerant for replacing R134 a.
Comparative examples 1-4 are not in the molar ratios provided herein, and it is clear that the comparative examples and comparative examples combine to provide comparative examples in which the relative volumetric refrigeration capacity of comparative examples 1-4 is small.
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 R134a, and can better replace R134 a.
The invention also provides an air conditioning system which comprises the mixed refrigerant.
In some embodiments, the air conditioning system is a vehicle air conditioning system.
The invention provides a quaternary environment-friendly mixed refrigerant with safety higher than that of R134a to replace R134a, and the mixed refrigerant consists of a first component, a second component, a third component and a fourth component. The first component is trifluoroiodomethane (R13I1), the second component is propane (R290), the third component is one of 2,3,3, 3-tetrafluoropropene (R1234yf) or trifluoromethyl methyl ether (RE143a), the fourth component is 1, 1-difluoroethane (R152a), the GWP values of the mixed refrigerant are all lower than 150, and the volume refrigeration capacity can be improved by 30% at most compared with that of R134 a. Therefore, the volume refrigerating capacity of the air conditioning system is improved, the air conditioning energy efficiency is improved, and the air conditioning system is more environment-friendly.
The above description is meant to be illustrative of the preferred embodiments of the present disclosure and not to be construed as limiting the disclosure, and any modifications, equivalents, improvements, etc. that fall within the spirit and scope of the present disclosure are intended to be included therein. The foregoing is only a preferred embodiment of the present disclosure, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present disclosure, and these modifications and variations should also be regarded as the protection scope of the present disclosure.
Claims (5)
1. A mixed refrigerant characterized by:
the mixed refrigerant comprises a first component, a second component, a third component and a fourth component, wherein: the first component is trifluoroiodomethane, the second component is propane, the third component is trifluoromethyl methyl ether, and the fourth component is 1, 1-difluoroethane;
the mol percentage of the first component in the mixed refrigerant is 5-50%, the mol percentage of the second component in the mixed refrigerant is 10-75%, the mol percentage of the third component in the mixed refrigerant is 5-20%, and the mol percentage of the fourth component in the mixed refrigerant is 10-80%.
2. The mixed refrigerant according to claim 1, characterized in that:
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 5:10:5: 80; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 5:35:10: 50; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 10:60:5: 25; or,
in the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 10:75:5: 10.
3. The mixed refrigerant according to claim 1, characterized in that:
under the state of normal-temperature liquid phase, the molar ratio of the iodotrifluoromethane to the alkyl propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 15:20:5: 60; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 20:40:20: 20; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 30:50:10: 10; or,
under the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 40:35:5: 20; or,
in the state of normal-temperature liquid phase, the molar ratio of the trifluoroiodomethane to the propane to the trifluoromethyl methyl ether to the 1, 1-difluoroethane is 5:25:5: 65.
4. An air conditioning system characterized by:
comprising the mixed refrigerant according to any one of claims 1 to 3.
5. The air conditioning system of claim 4, wherein:
the air conditioning system is a vehicle air conditioning system.
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