CN115612451A - Heat transfer composition for heat pump air conditioner - Google Patents
Heat transfer composition for heat pump air conditioner Download PDFInfo
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- CN115612451A CN115612451A CN202110805569.5A CN202110805569A CN115612451A CN 115612451 A CN115612451 A CN 115612451A CN 202110805569 A CN202110805569 A CN 202110805569A CN 115612451 A CN115612451 A CN 115612451A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
- C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
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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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- 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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- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a heat transfer composition for a heat pump air conditioner, which comprises the following components in part by weight: the first component is trifluoroiodomethane, and the mass content of the trifluoroiodomethane is 1-40%; a second component which is 3,3,3-trifluoropropyne with the mass content of 1-60 percent; a third component, which is selected from difluoromethane and/or cis-1,2-difluoroethylene, and the mass content is 1-25%; a fourth component, wherein the fourth component is selected from at least one of trifluoroethylene, propane or hexafluoropropylene, and the mass content is 1-60%; the sum of the mass contents of the first component, the second component, the third component and the fourth component is 100%. The heat transfer composition has excellent refrigerating performance and heating performance, particularly has outstanding heating performance in a low-temperature environment, and is suitable for being used as a heat transfer medium of a heat pump air conditioning system of a new energy automobile.
Description
Technical Field
The invention relates to a heat transfer fluid, in particular to a heat transfer composition for a heat pump air conditioner, especially a heat pump air conditioner of a new energy automobile.
Background
The new energy automobile generally comprises a hybrid electric automobile and a pure electric automobile, which are different from conventional fuel vehicles, and because the new energy automobile does not have an engine or cannot completely utilize the waste heat of the engine, the new energy automobile is heated by adopting PTC heating or a heat pump air conditioner. The PTC heating efficiency is low, the COP is equal to or less than 1, and the endurance mileage is severely shortened when the heat pump air conditioner is used at low temperature, so that the heat pump air conditioner for efficiently heating becomes a research hotspot in new energy automobiles.
At present, the heat transfer fluid of the heat pump air conditioning system of the new energy automobile mainly comprises HFC-134a, HFO-1234yf and CO2. Wherein, HFC-134a boiling point is-26.07 ℃, because of its own physical properties, the operation is under the ambient temperature of-15 ℃, the heating effect is very poor, need PTC auxiliary heating. The boiling point of HFO-1234yf as a substitute of R134a is-29.49 ℃, although the environmental performance is friendly, the performance of the HFO-1234yf is close to that of R134a, namely the low-temperature heating performance of the HFO-1234yf is poor, and PTC auxiliary heating is also needed, so that the driving range of a new energy automobile is influenced; although the low-temperature heating performance of CO2 is good, the pressure of the CO2 is too high, the system design is complex, the cost is high, leakage is easy, and the high-temperature refrigeration performance is poor. R410A is also applied to new energy automobiles in a small amount, and has good refrigerating performance and heating performance, but the GWP is as high as 2088, and the GWP is reduced and gradually eliminated.
The patent CN109140812A of the university of West's safety traffic discloses that a mixed working medium of CO2 and R290 is used for a heat pump system, and can reduce the working pressure of the system to a certain extent, but when the system is used in a full temperature range, the system is still in transcritical circulation, and the defects of obvious throttling loss and poor refrigeration effect and leakage exist, and the difficulty is brought to later maintenance.
Disclosure of Invention
In order to solve the technical problems, the invention provides the heat transfer composition for the heat pump air conditioner, particularly the heat pump air conditioner of the new energy automobile, which has the advantages of large refrigeration capacity, good heating effect and excellent environmental performance.
The components involved in the heat transfer composition of the present invention are illustrated below:
CF 3 i: trifluoroiodophorAn alkane;
TFP:3,3,3-trifluoropropyne;
R1132-Z: cis-1,2-difluoroethylene;
r1123: trifluoroethylene;
r290: propane;
r1216: and (3) hexafluoropropylene.
The purpose of the invention is realized by the following technical scheme:
a heat transfer composition for use in heat pump air conditioning, said heat transfer composition comprising:
the first component is trifluoroiodomethane, and the mass content of the trifluoroiodomethane is 1-40%;
the second component is 3,3,3-trifluoropropyne with the mass content of 1-60%;
a third component selected from difluoromethane and/or cis-1,2-difluoroethylene in a mass content of 1-25%;
a fourth component, wherein the fourth component is selected from at least one of trifluoroethylene, propane or hexafluoropropylene, and the mass content is 1-60%;
the sum of the mass contents of the first component, the second component, the third component and the fourth component is 100%.
Further, the heat transfer composition comprises:
10-40% of a first component;
5-40% of a second component;
5-25% of a third component;
10-40% of a fourth component.
Still further, the heat transfer composition comprises:
25-35% of a first component;
10-35% of a second component;
10-22% of a third component;
20-38% of a fourth component.
In one particular embodiment, the heat transfer composition comprises: 25-35% trifluoroiodomethane, 10-20% 3,3,3-trifluoropropyne, 10-20% difluoromethane and 20-35% of a fourth component selected from trifluoroethylene and/or propane.
Generally, for a heat transfer medium of a household air conditioner, the GWP thereof is controlled within a range of 750; compared with a household air conditioner, the heat transfer medium applied to the heat pump air conditioner of the new energy automobile needs to control the GWP value to be in a lower range, such as the GWP value is less than or equal to 150. Through research, the invention provides a heat transfer composition with an ODP value of 0 and a GWP value of less than 150, which is very suitable for a heat pump air conditioning system of a new energy automobile.
The invention also provides application of any one of the heat transfer compositions for the heat pump air conditioner in a heat pump air conditioning system of a new energy automobile, and particularly application of the heat transfer composition for the heat pump air conditioner to the heat pump air conditioning system of the new energy automobile instead of R410A.
When the heat transfer composition is applied to a heat pump air conditioner of a new energy automobile, the heat transfer composition has the following applicable working conditions: the evaporation temperature is-35-40 deg.c and the condensation temperature is 20-70 deg.c.
For the existing refrigerants R134a and R1234yf of the heat pump air-conditioning system of the new energy automobile, the heating capacity is poor in the low-temperature environment in winter, and the endurance mileage of the new energy automobile is obviously affected. Although the CO2 heat pump system has good low-temperature heating performance, the defect of poor refrigeration efficiency at high temperature exists, and the refrigeration requirement of a new energy automobile cannot be met. The heat transfer composition still has high volumetric heating capacity and heating energy efficiency ratio in a low-temperature environment, has good refrigeration performance at a high temperature, can directly replace R410A to be used in an original heat pump air conditioning system using the R410A, and does not need to change main parts of equipment.
Compared with the prior art, the invention has the beneficial effects that:
1. the heat transfer composition has excellent refrigerating performance and heating performance, the ODP value is 0, the GWP value is less than 150, and the heat transfer composition is environment-friendly.
2. When the heat transfer composition is used as a heat transfer medium for a heat pump air-conditioning system of a new energy automobile, the heat transfer composition can be directly used instead of R410A without changing main parts of equipment.
3. When the heat transfer composition is used for a heat pump air-conditioning system of a new energy automobile, the heat transfer composition has volume refrigerating capacity, refrigerating energy efficiency ratio, volume heating capacity and heating energy efficiency ratio which are equivalent to or higher than those of R410A, and the GWP value is far lower than that of R410A.
Drawings
FIG. 1 is a schematic cycle diagram of a heat pump air conditioning system of a new energy vehicle to which a heat transfer composition of an embodiment of the present invention is applied.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to limit the invention to these embodiments. It will be appreciated by those skilled in the art that the present invention encompasses all alternatives, modifications and equivalents as may be included within the scope of the claims.
The invention provides a refrigeration composition, which is prepared by reacting trifluoroiodomethane (CF) 3 I) 3,3,3-Trifluoropropyne (TFP), difluoromethane (R32) and/or cis-1,2-difluoroethylene (R1132-Z), and at least one of trifluoroethylene (R1123), propane (R290) and hexafluoropropylene (R1216) as a fourth component are physically mixed in a liquid phase state in a certain ratio.
The compositional proportions and GWP values for the heat transfer compositions of examples 1-8 of this invention are shown in Table 1 below:
TABLE 1 compositional proportions and GWP values for the compositions of the examples
Fig. 1 schematically shows a refrigeration cycle and a heating cycle of a heat pump air conditioning system of a new energy automobile, to which the heat transfer composition of the present invention is applied, specifically as follows:
after the heat pump air conditioner of the new energy automobile is started, the motor 1 applies work to the compressor 2. During refrigeration, the compressor 2 sucks low-temperature and low-pressure refrigerant vapor, compresses the low-temperature and low-pressure refrigerant vapor into high-temperature and high-pressure vapor, enters the heat exchanger 6 outside the vehicle after passing through the four-way valve 3, is cooled and depressurized through the throttle valve 5 after heat exchange, then enters the heat exchanger 4 inside the vehicle, and is boiled and sucked by the compressor 2 again after heat absorption, so that the process is repeated, and the effect of refrigerating inside the vehicle is achieved.
During heating, high-temperature and high-pressure steam compressed by the compressor 2 enters the heat exchanger 4 in the vehicle after passing through the four-way valve 3, releases heat to the environment in the vehicle, then enters the heat exchanger 6 outside the vehicle after being cooled and depressurized by the throttle valve 5, is boiled after the low-temperature and low-pressure refrigerant absorbs heat and is sucked by the compressor 2 again, and the process is repeated, so that the effect of heating the interior of the vehicle is achieved.
Table 2 shows the refrigeration and heating performance conditions under the same working conditions when the heat transfer composition and R410A of the embodiment of the present invention are applied to the heat pump air conditioning system of the new energy vehicle, where the working conditions are as follows: refrigeration working condition: the evaporation temperature is 5 ℃, the condensation temperature is 40 ℃, and the supercooling degree and the superheating degree are both 5 ℃; heating working conditions are as follows: the evaporation temperature is-20 ℃, the condensation temperature is 40 ℃, and the supercooling degree and the superheat degree are both 5 ℃.
TABLE 2 comparison of Cooling/heating Performance of the Heat transfer compositions of the examples with R410A
Note: the data of the volume refrigerating capacity, the refrigerating energy efficiency ratio, the volume heating capacity and the heating energy efficiency ratio are converted into a ratio compared with the R410A.
As can be seen from table 2 above, under the same working conditions, the volumetric refrigeration capacity, the refrigeration energy efficiency ratio, the volumetric heating capacity and the heating energy efficiency ratio of the heat transfer composition provided by the present invention are all equivalent to R410A; the heating performance and the refrigerating performance of the embodiments 1, 3 and 6 are better than those of R410A, and the application effect is good. Under the same working condition, the volume heating and refrigerating capacity of the heat transfer composition provided by the invention is obviously higher than that of R134a, and the heating performance is outstanding under a low-temperature environment.
Claims (8)
1. A heat transfer composition for use in heat pump air conditioners characterized by: the heat transfer composition comprises:
the first component is trifluoroiodomethane, and the mass content of the trifluoroiodomethane is 1-40%;
a second component which is 3,3,3-trifluoropropyne with the mass content of 1-60 percent;
a third component selected from difluoromethane and/or cis-1,2-difluoroethylene in a mass content of 1-25%;
a fourth component, wherein the fourth component is selected from at least one of trifluoroethylene, propane or hexafluoropropylene, and the mass content is 1-60%;
the sum of the mass contents of the first component, the second component, the third component and the fourth component is 100%.
2. A heat transfer composition for a heat pump air conditioner according to claim 1, characterized in that: the heat transfer composition comprises:
10-40% of a first component;
5-40% of a second component;
5-25% of a third component;
10-40% of a fourth component.
3. A heat transfer composition for a heat pump air conditioner according to claim 2, characterized in that: the heat transfer composition comprises:
25-35% of a first component;
10-35% of a second component;
10-22% of a third component;
20-38% of a fourth component.
4. A heat transfer composition for a heat pump air conditioner according to claim 3, characterized in that: the heat transfer composition comprises:
25-35% trifluoroiodomethane, 10-20% 3,3,3-trifluoropropyne, 10-20% difluoromethane and 20-35% of a fourth component selected from trifluoroethylene and/or propane.
5. A heat transfer composition for use in a heat pump air conditioner according to any one of claims 1 to 4, characterized in that: the heat transfer composition has an ODP value of 0 and a GWP value of <150.
6. Use of the heat transfer composition for heat pump air conditioning according to any of claims 1 to 4 in a heat pump air conditioning system of a new energy automobile.
7. The application of the heat transfer composition in a heat pump air-conditioning system of a new energy automobile according to claim 6, characterized in that: the heat transfer composition is used in place of R410A.
8. The application of the heat transfer composition in a heat pump air-conditioning system of a new energy automobile according to claim 6, characterized in that: the evaporation temperature is-35-40 deg.c and the condensation temperature is 20-70 deg.c.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110805569.5A CN115612451A (en) | 2021-07-16 | 2021-07-16 | Heat transfer composition for heat pump air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110805569.5A CN115612451A (en) | 2021-07-16 | 2021-07-16 | Heat transfer composition for heat pump air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117050731A (en) * | 2023-08-18 | 2023-11-14 | 珠海格力电器股份有限公司 | Refrigerant and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117050731A (en) * | 2023-08-18 | 2023-11-14 | 珠海格力电器股份有限公司 | Refrigerant and preparation method thereof |
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