CN113604201A - Mixed refrigerant and air conditioning system - Google Patents
Mixed refrigerant and air conditioning system Download PDFInfo
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- CN113604201A CN113604201A CN202111080520.4A CN202111080520A CN113604201A CN 113604201 A CN113604201 A CN 113604201A CN 202111080520 A CN202111080520 A CN 202111080520A CN 113604201 A CN113604201 A CN 113604201A
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 100
- 238000004378 air conditioning Methods 0.000 title claims abstract description 18
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical group FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 claims abstract description 202
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 108
- MIZLGWKEZAPEFJ-UHFFFAOYSA-N 1,1,2-trifluoroethene Chemical group FC=C(F)F MIZLGWKEZAPEFJ-UHFFFAOYSA-N 0.000 claims abstract description 101
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 62
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 62
- 239000001294 propane Substances 0.000 claims abstract description 54
- 239000007791 liquid phase Substances 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 238000004781 supercooling Methods 0.000 claims description 3
- 239000012071 phase Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002411 adverse Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 44
- 238000009472 formulation Methods 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 9
- 238000005057 refrigeration Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012808 vapor phase Substances 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
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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
- C09K2205/40—Replacement mixtures
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- Physics & Mathematics (AREA)
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- Combustion & Propulsion (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, and a third component, wherein: the first component is trifluoroethylene, the second component is difluoromethane, and the third component is any one of propane and propylene. The mixed refrigerant disclosed by the invention has low GWP and good thermal performance, the GWP value can be lower than 150, the volumetric refrigerating capacity of the mixed refrigerant can be much higher than that of R410A, the problem that the GWP of other alternative R410A refrigerants is higher is effectively solved, and the problem that the thermal performance of other refrigerants is poor is also solved. And the sliding temperature of the mixed working medium is low, the adverse effect caused by temperature sliding is eliminated, and the potential safety hazard caused by combustible refrigerants can be reduced or even eliminated.
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
To cope with climate change, china proposed 2030 year carbon peak-reaching goal and 2060 year carbon neutralization vision, and officially submitted the acceptance of the book entitled "national correction for profit" in montreal protocol "in 2021 month 6, which means that china will strengthen the control of greenhouse gases other than carbon dioxide, including the commonly used refrigerants such as R32 and R134 a. According to the reduction plan of the project of the 'Montreal protocol based on the correction of the benefits', 85% of the carbon emission equivalent of the refrigerant is required to be reduced in the mainly developed countries by 2036 years, and 80% of the carbon emission equivalent of the refrigerant is required to be reduced in the mainly developing countries by 2045 years. The refrigerants commonly used for the current household air conditioner are R410A and R32, the potential value of the greenhouse effect (GWP) of the refrigerants is 1924 and 677 respectively, taking R32 as an example, each emission of 1kgR32 is equivalent to the greenhouse effect caused by the emission of 675kgCO2, and in order to fulfill the obligation of the Jiali correction scheme, the refrigerants with the GWP value of less than 150 can be probably used in the future.
Because technical problems of low GWP value, high thermal performance (including COP, volume refrigerating capacity and the like) and the like cannot be simultaneously guaranteed by the refrigerant in the prior art, a mixed refrigerant and an air conditioning system are researched and designed by 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 simultaneously ensure low GWP value and high thermal performance, thereby providing a mixed refrigerant and an air conditioning system.
The present disclosure provides a mixed refrigerant, wherein:
comprising a first component, a second component and a third component, wherein: the first component is trifluoroethylene, the second component is difluoromethane, and the third component is any one of propane and propylene.
In some embodiments, the trifluoroethylene occupies a molar ratio of 48 to 92% of the mixed refrigerant, the difluoromethane occupies a molar ratio of 4 to 28% of the mixed refrigerant, and the propane or propylene occupies a molar ratio of 4 to 28% of the mixed refrigerant, in terms of mole percentage.
In some embodiments, the trifluoroethylene occupies a molar ratio of 56 to 92% of the mixed refrigerant, the difluoromethane occupies a molar ratio of 4 to 28% of the mixed refrigerant, and the propane or propylene occupies a molar ratio of 4 to 20% of the mixed refrigerant, in terms of mole percentage.
In some embodiments, the molar ratio of trifluoroethylene, difluoromethane, and propane is 0.56:0.28: 0.16; or,
the molar ratio of trifluoroethylene, difluoromethane and propane is 0.60:0.28: 0.12; or,
the molar ratio of trifluoroethylene, difluoromethane and propane is 0.64:0.16: 0.20; or,
the molar ratio of trifluoroethylene, difluoromethane and propane was 0.68:0.12: 0.20.
In some embodiments, the molar ratio of trifluoroethylene, difluoromethane, and propane is 0.72:0.20: 0.08; or,
the molar ratio of trifluoroethylene, difluoromethane and propane is 0.76:0.20: 0.04; or,
the molar ratio of trifluoroethylene, difluoromethane and propane is 0.80:0.12: 0.08; or,
the molar ratio of trifluoroethylene, difluoromethane and propane was 0.84:0.04: 0.12.
In some embodiments, the molar ratio of trifluoroethylene, difluoromethane, and propane is 0.92:0.04: 0.04; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.48:0.24: 0.28; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.52:0.24: 0.24; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene was 0.56:0.28: 0.16.
In some embodiments, the molar ratio of trifluoroethylene, difluoromethane, and propylene is 0.60:0.28: 0.12; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.64:0.08: 0.28; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.68:0.28: 0.04; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene was 0.72:0.20: 0.08.
In some embodiments, the molar ratio of trifluoroethylene, difluoromethane, and propylene is 0.76:0.20: 0.04; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.80:0.12: 0.08; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.84:0.04: 0.12; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene was 0.92:0.04: 0.04.
The present disclosure also provides an air conditioning system comprising the mixed refrigerant of any of the preceding.
In some embodiments, the operation conditions of the mixed refrigerant are as follows: the evaporation temperature is 280.15K-285.55K, the condensation temperature is 310.15K-315.15K, the gas phase at the outlet of the evaporator is in an overheat state, the degree of superheat is 0-10K, the liquid phase at the outlet of the condenser is in a supercooled state, and the degree of supercooling is 0-10K.
The mixed refrigerant and air conditioning system provided by the disclosure has the following beneficial effects:
the present disclosure provides a ternary environment-friendly mixed refrigerant and an air conditioning system using the same, namely, three components of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) or propylene (R1270) are physically mixed according to corresponding molar ratios to form a ternary mixture (namely, the mixed refrigerant is composed of three different refrigerants), the mixed refrigerant has low GWP and good thermal performance, the GWP value is lower than 150 and far lower than R410A, the refrigerant has obvious environmental protection advantages, the temperature slippage is small, and gas and liquid phase components are basically consistent in the using process; the thermodynamic performance is equivalent to or even better than that of a unit using R410A refrigerant, the maximum volume refrigerating capacity can be improved by 20%, the problem of higher GWP of other alternative R410A refrigerant is effectively solved, and the problem of poor thermodynamic performance of other refrigerant is also solved. And the sliding temperature of the mixed working medium can be less than 0.5 ℃, the adverse effect caused by the temperature sliding is eliminated, and the air conditioning system can reduce or even eliminate the potential safety hazard caused by combustible refrigerants.
Detailed Description
The present disclosure provides a mixed refrigerant, wherein:
comprising a first component, a second component and a third component, wherein: the first component is trifluoroethylene (R1123), the second component is difluoromethane (R32), and the third component is any one of propane (R290) and propylene (R1270).
The present disclosure provides a ternary environment-friendly mixed refrigerant and an air conditioning system using the same, namely, three components of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) or propylene (R1270) are physically mixed according to corresponding molar ratios to form a ternary mixture (namely, the mixed refrigerant is composed of three different refrigerants), the mixed refrigerant has low GWP and good thermal performance, the GWP value is lower than 150 and far lower than R410A, the refrigerant has obvious environmental protection advantages, the temperature slippage is small, and gas and liquid phase components are basically consistent in the using process; the thermodynamic performance is equivalent to or even better than that of a unit using R410A refrigerant, the maximum volume refrigerating capacity can be improved by 20%, the problem of higher GWP of other alternative R410A refrigerant is effectively solved, and the problem of poor thermodynamic performance of other refrigerant is also solved. And the sliding temperature of the mixed working medium can be less than 0.5 ℃, the adverse effect caused by the temperature sliding is eliminated, and the air conditioning system can reduce or even eliminate the potential safety hazard caused by combustible refrigerants.
Preferably, the trifluoroethylene (R1123) occupies 48 to 92% of the mixed refrigerant by mol, the difluoromethane (R32) occupies 4 to 28% of the mixed refrigerant by mol, and the propane (R290) or propylene (R1270) occupies 4 to 28% of the mixed refrigerant by mol. The first component is trifluoroethylene (R1123), the second component is difluoromethane (R32), and the third component is one of propane (R290) or propylene (R1270). And the environment-friendly mixed refrigerant comprises 48-92% of trifluoroethylene (R1123), 4-28% of difluoromethane (R32) and 4-28% of a third component in percentage by mole. Under the condition that the three components meet the mass ratio, the environment-friendly mixed refrigerant has good thermal performance (COP and volume refrigerating capacity), low GWP and optimal comprehensive performance in two aspects.
The present disclosure provides an environment-friendly mixed refrigerant to replace R410A, the mixed refrigerant has GWP less than 150, is composed of trifluoroethylene (R1123), difluoromethane (R32), propane (R290) or propylene (R1270), has GWP far lower than R410A, and can raise the volumetric refrigeration capacity by up to 20%.
Further preferably, the trifluoroethylene (R1123) occupies 56 to 92% of the molar ratio of the mixed refrigerant, the difluoromethane (R32) occupies 4 to 28% of the molar ratio of the mixed refrigerant, and the propane (R290) or propylene (R1270) occupies 4 to 20% of the molar ratio of the mixed refrigerant, in terms of mole percentage.
The ternary mixed refrigerant GWP is less than 150, and the capacity and the energy efficiency of the refrigerant unit are equivalent to or even better than those of a unit using R410A refrigerant.
The present disclosure provides an environment-friendly mixed refrigerant applied to a home air conditioner. The preparation method comprises the step of physically mixing trifluoroethylene (R1123), difluoromethane (R32), propane (R290) or propylene (R1270) according to corresponding molar ratios to form a ternary mixture. The basic parameters of each component are shown in Table 1.
TABLE 1 basic parameters of the constituent substances in the mixed working fluid
The preferable combination molar ratio is as follows:
TABLE 2 preferred mixture molar ratios
Preferably, the first and second electrodes are formed of a metal,
in example 1 (formulation 1), three components of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) are physically and uniformly mixed according to a molar ratio of 0.56:0.28:0.16 to obtain an environment-friendly mixed working medium.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) was 0.56:0.28: 0.16.
In example 2 (formulation 2), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propane (R290), are physically and uniformly mixed according to a molar ratio of 0.60:0.28:0.12 to obtain an environment-friendly mixed working medium.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) was 0.60:0.28: 0.12.
In example 3 (formulation 3), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propane (R290), are physically and uniformly mixed according to a molar ratio of 0.64:0.16:0.20 to obtain the environment-friendly mixed working medium.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) was 0.64:0.16: 0.20.
In example 4 (formulation 4), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propane (R290), were physically mixed uniformly in a molar ratio of 0.68:0.12:0.20 to obtain an environmentally friendly working mixture.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) was 0.68:0.12: 0.20.
Preferably, the first and second electrodes are formed of a metal,
in example 5 (formulation 5), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propane (R290), are physically and uniformly mixed according to a molar ratio of 0.72:0.20:0.08 to obtain an environment-friendly mixed working medium.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) was 0.72:0.20: 0.08.
In example 6 (formulation 6), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propane (R290), are physically and uniformly mixed according to a molar ratio of 0.76:0.20:0.04 to obtain the environment-friendly mixed working medium.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) was 0.76:0.20: 0.04.
In example 7 (formulation 7), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propane (R290), were physically mixed uniformly in a molar ratio of 0.80:0.12:0.08 to obtain an environmentally friendly working mixture.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) was 0.80:0.12: 0.08.
In example 8 (formulation 8), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propane (R290), were physically mixed uniformly in a molar ratio of 0.84:0.04:0.12 to obtain an environmentally friendly working mixture.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) was 0.84:0.04: 0.12.
Preferably, the first and second electrodes are formed of a metal,
in example 9 (formulation 9), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propane (R290), were physically mixed uniformly in a molar ratio of 0.92:0.04:0.04 to obtain an environmentally friendly working mixture.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) was 0.92:0.04: 0.04.
In example 10 (formulation 10), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270), were physically and uniformly mixed in a molar ratio of 0.48:0.24:0.28 to obtain an environmentally friendly mixed working fluid.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32), and propylene (R1270) was 0.48:0.24: 0.28.
In example 11 (formulation 11), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270), were physically and uniformly mixed in a molar ratio of 0.52:0.24:0.24 to obtain an environmentally friendly working mixture.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32), and propylene (R1270) was 0.52:0.24: 0.24.
In example 12 (formulation 12), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270), were physically and uniformly mixed in a molar ratio of 0.56:0.28:0.16 to obtain an environmentally friendly mixed working fluid.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270) was 0.56:0.28: 0.16.
Preferably, the first and second electrodes are formed of a metal,
in example 13 (formulation 13), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270), were physically mixed uniformly in a molar ratio of 0.60:0.28:0.12 to obtain an environmentally friendly working mixture.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270) was 0.60:0.28: 0.12.
In example 14 (formulation 14), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270), were physically and uniformly mixed in a molar ratio of 0.64:0.08:0.28 to obtain an environmentally friendly working mixture.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270) was 0.64:0.08: 0.28.
In example 15 (formulation 15), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270), were physically and uniformly mixed in a molar ratio of 0.68:0.28:0.04 to obtain an environmentally friendly working mixture.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270) was 0.68:0.28: 0.04.
In example 16 (formulation 16), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270), were physically and uniformly mixed in a molar ratio of 0.72:0.20:0.08 to obtain an environmentally friendly working mixture.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270) was 0.72:0.20: 0.08.
Preferably, the first and second electrodes are formed of a metal,
in example 17 (formulation 17), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270), were physically mixed uniformly in a molar ratio of 0.76:0.20:0.04 to obtain an environmentally friendly working mixture.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270) was 0.76:0.20: 0.04.
In example 18 (formulation 18), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270), were physically mixed uniformly in a molar ratio of 0.80:0.12:0.08 to obtain an environmentally friendly working mixture.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270) was 0.80:0.12: 0.08.
In example 19 (formulation 19), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270), were physically and uniformly mixed in a molar ratio of 0.84:0.04:0.12 to obtain an environmentally friendly working mixture.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270) was 0.84:0.04: 0.12.
In example 20 (formulation 20), three components, namely trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270), were physically mixed uniformly in a molar ratio of 0.92:0.04:0.04 to obtain an environmentally friendly working mixture.
That is, the molar ratio of trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270) was 0.92:0.04: 0.04.
Comparative example 1 (comparative example, for comparison with examples 1 to 20 of the present disclosure, which shows that a refrigerant out of the range of examples of the present disclosure does not achieve the effect of the present disclosure), three components of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) were physically mixed uniformly at a molar ratio of 0.20/0.40/0.40 to obtain a working mixture.
Comparative example 2, three components of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) were physically mixed uniformly at a molar ratio of 0.60/0.08/0.32 to obtain a working mixture.
In comparative example 3, three components of trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270) were physically and uniformly mixed at a molar ratio of 0.20/0.36/0.44 to obtain a working mixture.
In comparative example 4, three components of trifluoroethylene (R1123), difluoromethane (R32) and propylene (R1270) were physically and uniformly mixed at a molar ratio of 0.56/0.04/0.40 to obtain a working mixture.
The ternary mixed refrigerant is used for replacing R410A, and the selected design working conditions are as follows: the evaporator evaporation temperature was 283.15K (dew point temperature at evaporation pressure), the condenser condensation temperature was 313.15K (bubble point temperature at condensation pressure), the vapor phase at the evaporator outlet was in superheated state, the degree of superheat was 5K, the liquid phase at the condenser outlet was in supercooled state, the degree of supercooling was 5K, and the adiabatic efficiency of the compressor was 0.75. Using the above example and theoretical calculations of the cycle performance parameters of R410A refrigerant in a refrigeration system, physical data were taken from REFPROP 10.0, comparing GWP (calculated as linear sum of mass percentages), relative cooling capacity per unit volume Qv (ratio of cooling capacity per unit volume of R410A), relative coefficient of performance COP (ratio of performance coefficient of R410A), temperature glide and flammability rating, wherein the flammability rating was classified according to ASHRAE 34-2019 as four ratings of 1 (no flame propagation), 2L (micro-flammable), 2 (flammable) and 3 (flammable), as shown in the following table:
TABLE 3 comparison of the respective Performance indices
As can be seen from the above table, the GWP of all refrigerant formulas is less than 150, which is far lower than that of the existing household air-conditioning refrigerants such as R410A, R32 and the like, and the refrigerant formula has better environmental protection property; the relative performance coefficient of all refrigerant formulas is not lower than 0.9, the relative volume refrigerating capacity is higher than 1.1, and the refrigerating capacity can be improved by 20% to the maximum extent by using R410A refrigerant; the temperature glide of all refrigerant formulas is less than 1K; all refrigerant formulations have better flammability ratings than R290. If one of the three components is not in the molar ratio provided by the disclosure, the GWP of the comparative examples 1 and 3 is higher and is more than 150, the temperature slip is more than 1K, and the relative performance coefficient is lower than 0.9; the slippage of the comparative examples 2 and 4 is more than 1K, the relative performance coefficient is lower than 0.9, and the relative volume refrigerating capacity is lower than 1.05.
1. COP refers to the coefficient of performance, reflecting refrigeration energy efficiency. The COP of the present disclosure is lower than R410A, R32, and R290. However, the GWP values are much lower than R410A and R32, and the Qv values are much higher than R290.
2. Qv refers to the amount of refrigeration per unit volume, reflecting the refrigeration capacity.
3. The disclosure is primarily to lower GWP and raise the Qv value, the COP value is not raised, but cannot be lowered too much. Wherein GWP value is reduced to below 150, and Qv value is improved by more than 10% compared with R410A. Formulation 1/11/12/13/15 also had a GWP of less than 150.
4. Comparative examples 1 and 3 have mainly a GWP higher than 150 and comparative examples 2 and 4 have a low Qv and COP.
From the above, the ternary mixed working medium provided by the disclosure not only has the environmental protection characteristic of low GWP, but also has small temperature slippage, system performance coefficient similar to that of R410A, and highest refrigerating capacity of unit volume capable of being improved by 20%, and can better replace R410A refrigerant.
The present disclosure also provides an air conditioning system comprising the mixed refrigerant of any of the preceding.
The present disclosure provides a ternary environment-friendly mixed refrigerant and an air conditioning system using the same, namely, three components of trifluoroethylene (R1123), difluoromethane (R32) and propane (R290) or propylene (R1270) are physically mixed according to corresponding molar ratios to form a ternary mixture (namely, the mixed refrigerant is composed of three different refrigerants), the mixed refrigerant has low GWP and good thermal performance, the GWP value is lower than 150 and far lower than R410A, the refrigerant has obvious environmental protection advantages, the temperature slippage is small, and gas and liquid phase components are basically consistent in the using process; the thermodynamic performance is equivalent to or even better than that of a unit using R410A refrigerant, the maximum volume refrigerating capacity can be improved by 20%, the problem of higher GWP of other alternative R410A refrigerant is effectively solved, and the problem of poor thermodynamic performance of other refrigerant is also solved. And the sliding temperature of the mixed working medium can be less than 0.5 ℃, the adverse effect caused by the temperature sliding is eliminated, and the air conditioning system can reduce or even eliminate the potential safety hazard caused by combustible refrigerants.
The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure. 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 (10)
1. A mixed refrigerant characterized by:
comprising a first component, a second component and a third component, wherein: the first component is trifluoroethylene, the second component is difluoromethane, and the third component is any one of propane and propylene.
2. The mixed refrigerant according to claim 1, characterized in that:
the mol percentage of the trifluoroethylene accounts for 48-92% of the mixed refrigerant, the mol percentage of the difluoromethane accounts for 4-28% of the mixed refrigerant, and the mol percentage of the propane or the propylene accounts for 4-28% of the mixed refrigerant.
3. The mixed refrigerant according to claim 2, characterized in that:
the mol percentage of the trifluoroethylene accounts for 56-92% of the mixed refrigerant, the mol percentage of the difluoromethane accounts for 4-28% of the mixed refrigerant, and the mol percentage of the propane or the propylene accounts for 4-20% of the mixed refrigerant.
4. The mixed refrigerant of claim 3, wherein:
the molar ratio of trifluoroethylene, difluoromethane and propane is 0.56:0.28: 0.16; or,
the molar ratio of trifluoroethylene, difluoromethane and propane is 0.60:0.28: 0.12; or,
the molar ratio of trifluoroethylene, difluoromethane and propane is 0.64:0.16: 0.20; or,
the molar ratio of trifluoroethylene, difluoromethane and propane was 0.68:0.12: 0.20.
5. The mixed refrigerant of claim 3, wherein:
the molar ratio of trifluoroethylene, difluoromethane and propane is 0.72:0.20: 0.08; or,
the molar ratio of trifluoroethylene, difluoromethane and propane is 0.76:0.20: 0.04; or,
the molar ratio of trifluoroethylene, difluoromethane and propane is 0.80:0.12: 0.08; or,
the molar ratio of trifluoroethylene, difluoromethane and propane was 0.84:0.04: 0.12.
6. The mixed refrigerant according to claim 2, characterized in that:
the molar ratio of trifluoroethylene, difluoromethane and propane is 0.92:0.04: 0.04; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.48:0.24: 0.28; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.52:0.24: 0.24; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene was 0.56:0.28: 0.16.
7. The mixed refrigerant according to claim 2, characterized in that:
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.60:0.28: 0.12; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.64:0.08: 0.28; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.68:0.28: 0.04; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene was 0.72:0.20: 0.08.
8. The mixed refrigerant according to claim 2, characterized in that:
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.76:0.20: 0.04; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.80:0.12: 0.08; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene is 0.84:0.04: 0.12; or,
the molar ratio of trifluoroethylene, difluoromethane and propylene was 0.92:0.04: 0.04.
9. An air conditioning system characterized by:
comprising the mixed refrigerant according to any one of claims 1 to 8.
10. The air conditioning system of claim 9, wherein:
the operation conditions of the mixed refrigerant are as follows: the evaporation temperature is 280.15K-285.55K, the condensation temperature is 310.15K-315.15K, the gas phase at the outlet of the evaporator is in an overheat state, the degree of superheat is 0-10K, the liquid phase at the outlet of the condenser is in a supercooled state, and the degree of supercooling is 0-10K.
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