CN115785908A - Refrigerant for high-temperature air source heat pump - Google Patents
Refrigerant for high-temperature air source heat pump Download PDFInfo
- Publication number
- CN115785908A CN115785908A CN202211345830.9A CN202211345830A CN115785908A CN 115785908 A CN115785908 A CN 115785908A CN 202211345830 A CN202211345830 A CN 202211345830A CN 115785908 A CN115785908 A CN 115785908A
- Authority
- CN
- China
- Prior art keywords
- refrigerant
- heat pump
- air source
- source heat
- tetrafluoroethane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003507 refrigerant Substances 0.000 title claims abstract description 61
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 56
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 claims abstract description 56
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 claims abstract description 34
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000001294 propane Substances 0.000 claims abstract description 26
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 17
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000009835 boiling Methods 0.000 claims abstract description 15
- 239000000314 lubricant Substances 0.000 claims abstract description 12
- 239000002480 mineral oil Substances 0.000 claims abstract description 11
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 11
- 229920002545 silicone oil Polymers 0.000 claims abstract description 8
- 239000001384 succinic acid Substances 0.000 claims abstract description 8
- 239000013556 antirust agent Substances 0.000 claims abstract description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 9
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 8
- 239000003112 inhibitor Substances 0.000 claims description 7
- QDCPNGVVOWVKJG-VAWYXSNFSA-N 2-[(e)-dodec-1-enyl]butanedioic acid Chemical compound CCCCCCCCCC\C=C\C(C(O)=O)CC(O)=O QDCPNGVVOWVKJG-VAWYXSNFSA-N 0.000 claims description 4
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 4
- 238000003763 carbonization Methods 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000010696 ester oil Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229920005862 polyol Polymers 0.000 description 3
- -1 polyol ester Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000010725 compressor oil Substances 0.000 description 2
- 150000005690 diesters Chemical class 0.000 description 2
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010726 refrigerant oil Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lubricants (AREA)
Abstract
The invention discloses a refrigerant for a high-temperature air source heat pump, which belongs to the field of air compressor refrigerants and comprises tetrafluoroethane, difluoromethane, pentafluoroethane and propane, wherein the mass ratio of each refrigerant is as follows: 72-85% of tetrafluoroethane, 6-8% of difluoromethane, 6-8% of pentafluoroethane and 2% of propane. Adding a lubricant into the air source heat pump, wherein the lubricant comprises one or more of mineral oil, silicone oil, naphthylamine antioxidant and succinic acid antirust agent. The invention solves the problems of low working energy efficiency and easy carbonization in the compressor caused by high boiling point of the refrigerant tetrafluoroethane at low temperature of the high-temperature air source heat pump.
Description
Technical Field
The invention belongs to the field of air source heat pump compressors, and particularly relates to a refrigerant for a high-temperature air source heat pump.
Background
The temperature of hot water generated by conventional heating of the air source heat pump is within 60 ℃, the air source heat pump can generate hot water with the temperature of more than 85 ℃ along with the improvement of the air source heat pump technology, higher temperature not only has requirements on parts such as a compressor, an expansion valve and the like, but also is very important for selecting a refrigerant with proper high temperature, the high-pressure protection is caused by the pressure of the refrigerant possibly too high to influence the working efficiency of equipment, and the carbonization of the lubricating oil of the refrigerant and the like are caused due to too high temperature.
The patent refers to CN105754682a for the refrigerant oil of compressor and the refrigerant mixture of compressor, which describes the addition of refrigerant oil to the compressor, but in the air source heat pump with lower temperature, the refrigerant is required to have lower boiling point, and the critical temperature and critical pressure are required to be appropriate, otherwise, the internal pressure is too high, which easily causes the carbonization problem.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problem of carbonization caused by deposition frequently due to higher boiling point of the existing refrigerant is solved.
In order to solve the technical problems, the inventor obtains the technical scheme of the invention through practice and summary, and the invention discloses a refrigerant for a high-temperature air source heat pump, wherein the refrigerant comprises tetrafluoroethane, difluoromethane, pentafluoroethane and propane, and the mass ratio of the refrigerants is as follows:
72-85% of tetrafluoroethane, 6-8% of difluoromethane, 6-8% of pentafluoroethane and 2% of propane.
Tetrafluoroethane, chemical name 1,1,1,2-tetrafluoroethane, formula CH2FCF3. The single tetrafluoroethane refrigerant is also called R-134a refrigerant, namely R134a, HFC134a and HFC-134a, because R-134a belongs to HFC substances, the refrigerant does not destroy the ozone layer at all, is an environment-friendly refrigerant which is approved and recommended to be used by most countries in the world at present, is also a mainstream environment-friendly refrigerant at present, and is widely used for being added in the initial installation and maintenance process of new refrigeration air-conditioning equipment.
The common performance of the R-134a refrigerant is that the boiling point is minus 26.1 ℃ under the standard atmospheric pressure, the critical temperature is 101.1 ℃, and the critical pressure is 4.067MPa. The performance is better, and the refrigerant is suitable for being used as the main component of the refrigerant in the high-temperature air source heat pump.
Propane refrigerant alone, also called R-290 refrigerant, is called R290 refrigerant, R290 and R290 belong to hydrocarbon refrigerant, and the ozone layer is not damaged at all, the greenhouse effect is very small, the refrigerant belongs to the most environment-friendly refrigerant at present, and from the viewpoint of environment protection, almost all countries around the world have no limit on the initial installation of the R290 refrigerant on new refrigeration equipment and the use of the R290 refrigerant in the after-sale maintenance process. The R-290 refrigerant has the common performances of boiling point of-42.2 ℃ under the standard atmospheric pressure, critical temperature of 96.67 ℃ and critical pressure of 4.24MPa. In common, the standard boiling point of difluoromethane is-51.6 ℃, the critical temperature under the standard atmospheric pressure is 72,5 ℃, and the critical pressure is 5.8MPa; pentafluoroethane is generally found to have a normal boiling point of-48.4 ℃ and a critical temperature at standard atmospheric pressure of 72.5 ℃ which is comparable to difluoromethane.
And adding a lubricant into the air source heat pump, wherein the lubricant comprises one or more of mineral oil, silicone oil, naphthylamine antioxidant and succinic acid antirust agent.
The mineral is ester oil, and the ester oil can be divided into diester, polyol ester and aromatic ester according to the number and position of ester groups of reaction products. The diester has good viscosity index and low-temperature fluidity, but the thermal oxidation stability is poor; the polyol ester has excellent thermal oxidation stability and hydrolytic stability, low evaporation loss and better lubricating property; the aromatic ester has low production cost, low evaporation loss, high solubility and thermal oxidation stability due to the benzene ring structure, and low viscosity index.
In a further technical scheme, the standard boiling point is between-46.5 and-38.6 ℃, the critical temperature is between 95.9 and 99.6 ℃, and the critical pressure is between 4.32 and 4.08MPa.
In a further technical scheme, the silicone oil is methyl silicone oil.
In still further embodiments, the naphthylamine antioxidant comprises one or both of alpha-naphthylamine and N-phenylaniline.
The oxidation stability is one of the most important properties of the compressor oil, is the most key index for representing the service life of the compressor oil, and is generally improved by adding an antioxidant. The amine antioxidant has good high-temperature oxidation resistance, has good effects of prolonging induction period and inhibiting oil product later oxidation, is particularly stable at 200 ℃ for diphenylamine and alpha-naphthylamine, has synergistic effect when being compounded with the phenol antioxidant and amines, and has more remarkable effect in the aspect of oxidation resistance.
In a still further aspect, the base succinic acid rust inhibitor includes dodecenylsuccinic acid.
The rust prevention and corrosion prevention is one of the most basic performances of lubricating oil, particularly for lubricating oil in a compressor, an oil product is usually in direct contact with compressed gas and is easily influenced by pollutants such as moisture in the gas, and the water has low solubility under high pressure and is more easily separated out to be mixed with the oil product, so that the equipment is accelerated to be rusted. Rust inhibitors are generally polar substances, the polar groups of which are present when they come into contact with metals. Can adsorb to the metal surface and form the protection film, prevent corrosive medium and metal contact, play rust-resistant effect, and ester oil can form the competitive adsorption relation at the metal surface and rust inhibitor because polarity is strong, influences rust inhibitor result of use.
In a further aspect, the mineral oil is a naphthenic mineral oil for HCFC refrigerants.
In a further technical scheme, the antioxidant accounts for 0.5-1.0% of the mass of the lubricant, and the mass ratio of the antioxidant to the antirust agent is 1:1.35.
compared with the prior art, the invention can obtain the following technical effects:
a refrigerant for a high-temperature air source heat pump can be used for solving the problem of difficult carbonization due to high boiling point, high critical temperature and low critical pressure when producing high-temperature water; the critical temperature and critical pressure in tetrafluoromethane are excellent in a compressor, but the normal boiling point is high in a low-temperature environment, so that expansion is easy to occur in the operation of the compressor, otherwise, the internal pressure is easily too high, so that the carbonization problem is easy to occur. The invention adopts the filling of difluoromethane, pentafluoroethane and propane into tetrafluoroethane to reduce the comprehensive performance, and combines lubricating oil to realize the reduction of boiling point without great change of critical temperature and critical pressure. The refrigerant for the high-temperature air source heat pump has the advantages of low cost, easiness in preparation and good environmental friendliness.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The application of the principles of the present invention will now be described in further detail with reference to specific embodiments.
The refrigerant comprises tetrafluoroethane, difluoromethane, pentafluoroethane and propane, and the lubricant comprises one or more of mineral oil, silicone oil, naphthylamine antioxidant and succinic acid antirust agent.
The silicone oil is methyl silicone oil. The naphthylamine antioxidant comprises one or two of alpha-naphthylamine or N-phenylaniline. The base succinic acid rust inhibitor comprises dodecenylsuccinic acid. The mineral oil is naphthenic mineral oil used in HCFC refrigerant. The antioxidant accounts for 0.5-1.0 percent of the mass of the lubricant, and the mass ratio of the antioxidant to the antirust is 1:1.35.
specifically, in the following examples, the lubricant is polyol ester mineral oil, the silicone oil is methyl silicone oil, the naphthylamine antioxidant is alpha-naphthylamine, and the base succinic acid rust inhibitor is dodecenylsuccinic acid.
The following table is table 1, table 1 being part of the physical properties of tetrafluoroethane, difluoromethane, pentafluoroethane and propane.
| Component (A) | Molecular weight | Normal boiling point deg.C | Critical temperatureDEG C | Critical pressure MPa |
| Tetrafluoroethane | 102.03 | -26.1 | 101.1 | 4.067 |
| Difluoromethane | 52.023 | -51.6 | 72.5 | 5.808 |
| Pentafluoroethane | 120.02 | -48.45 | 72.5 | 4.95 |
| Propane (E) | 44.096 | -42.2 | 96.67 | 4.24 |
Example 1
A refrigerant for a high-temperature air source heat pump is additionally arranged in a unified test environment, and comprises tetrafluoroethane, difluoromethane, pentafluoroethane and propane, wherein the mass ratios of the refrigerants are as follows:
the mass percent of tetrafluoroethane is 72%, the mass percent of difluoromethane is 6%, the mass percent of pentafluoroethane is 6%, and the mass percent of propane is 2%. Are often all gaseous fills.
Example 2
A refrigerant for a high-temperature air source heat pump is additionally arranged in a unified test environment, and comprises tetrafluoroethane, difluoromethane, pentafluoroethane and propane, wherein the mass ratios of the refrigerants are as follows:
74% by mass of tetrafluoroethane, 6% by mass of difluoromethane, 6% by mass of pentafluoroethane and 2% by mass of propane. Are often all gaseous fills.
Example 3
A refrigerant for a high-temperature air source heat pump is additionally arranged in a unified test environment, and comprises tetrafluoroethane, difluoromethane, pentafluoroethane and propane, wherein the mass ratios of the refrigerants are as follows:
76% by mass of tetrafluoroethane, 6% by mass of difluoromethane, 6% by mass of pentafluoroethane and 2% by mass of propane. Are often all gaseous fills.
Example 4
A refrigerant for a high-temperature air source heat pump is additionally arranged in a unified test environment, and comprises tetrafluoroethane, difluoromethane, pentafluoroethane and propane, wherein the mass ratios of the refrigerants are as follows:
the mass percent of tetrafluoroethane is 78%, the mass percent of difluoromethane is 6%, the mass percent of pentafluoroethane is 6%, and the mass percent of propane is 2%. Are often all gaseous fills.
Example 5
A refrigerant for a high-temperature air source heat pump is additionally arranged in a unified test environment, and comprises tetrafluoroethane, difluoromethane, pentafluoroethane and propane, wherein the mass ratios of the refrigerants are as follows:
the mass percent of tetrafluoroethane is 80%, the mass percent of difluoromethane is 6%, the mass percent of pentafluoroethane is 6%, and the mass percent of propane is 2%. Are often all gaseous fills.
Example 6
A refrigerant for a high-temperature air source heat pump is additionally arranged in a unified test environment, and comprises tetrafluoroethane, difluoromethane, pentafluoroethane and propane, wherein the mass ratios of the refrigerants are as follows:
the mass percent of tetrafluoroethane is 82%, the mass percent of difluoromethane is 6%, the mass percent of pentafluoroethane is 6%, and the mass percent of propane is 2%. Are often all gaseous fills.
Example 7
A refrigerant for a high-temperature air source heat pump is additionally arranged in a unified test environment, and comprises tetrafluoroethane, difluoromethane, pentafluoroethane and propane, wherein the mass ratios of the refrigerants are as follows:
the mass percent of tetrafluoroethane is 84%, the mass percent of difluoromethane is 7%, the mass percent of pentafluoroethane is 6%, and the mass percent of propane is 6%. Are often all gaseous fills.
Table 2 below shows the measured normal boiling point, critical temperature and critical pressure of the refrigerants measured in the above examples 1 to 7.
In summary, difluoromethane, pentafluoroethane and propane were filled into tetrafluoroethane, maintaining the mixing ratio: (72-85%): (6-8%): (6-8%): 2 percent, the boiling point of the bottom of the product can be better ensured to be basically maintained between minus 46.5 ℃ and minus 38.6 ℃ under the condition of mixing the lubricant, and the better critical temperature and critical pressure can be ensured at the temperature, so that the carbonization problem can be better overcome.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The refrigerant for the high-temperature air source heat pump is characterized by comprising tetrafluoroethane, difluoromethane, pentafluoroethane and propane, wherein the mass ratio of the tetrafluoroethane to the difluoromethane is as follows:
72-85% of tetrafluoroethane, 6-8% of difluoromethane, 6-8% of pentafluoroethane and 2% of propane;
and adding a lubricant into the air source heat pump, wherein the lubricant comprises one or more of mineral oil, silicone oil, naphthylamine antioxidant and succinic acid antirust agent.
2. The refrigerant for the high-temperature air source heat pump as recited in claim 1, wherein the normal boiling point is-46.5 to-38.6 ℃, the critical temperature is 95.9 to 99.6 ℃, and the critical pressure is 4.32 to 4.08MPa.
3. The refrigerant for a high-temperature air source heat pump as claimed in claim 1, wherein: the silicone oil is methyl silicone oil.
4. The refrigerant for a high-temperature air source heat pump as claimed in claim 1, wherein: the naphthylamine antioxidant comprises one or two of alpha-naphthylamine or N-phenylaniline.
5. The refrigerant for a high-temperature air source heat pump as claimed in claim 1, wherein: the base succinic acid rust inhibitor comprises dodecenylsuccinic acid.
6. The refrigerant for a high-temperature air source heat pump as claimed in claim 1, wherein: the mineral oil is naphthenic mineral oil used in HCFC refrigerant.
7. The refrigerant for a high-temperature air source heat pump as claimed in claim 1, wherein: the antioxidant accounts for 0.5-1.0 percent of the mass of the lubricant, and the mass ratio of the antioxidant to the antirust is 1:1.35.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211345830.9A CN115785908A (en) | 2022-10-31 | 2022-10-31 | Refrigerant for high-temperature air source heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211345830.9A CN115785908A (en) | 2022-10-31 | 2022-10-31 | Refrigerant for high-temperature air source heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115785908A true CN115785908A (en) | 2023-03-14 |
Family
ID=85434480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211345830.9A Pending CN115785908A (en) | 2022-10-31 | 2022-10-31 | Refrigerant for high-temperature air source heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115785908A (en) |
-
2022
- 2022-10-31 CN CN202211345830.9A patent/CN115785908A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109689830B (en) | Heat transfer compositions, methods, and systems | |
| TWI411674B (en) | Refrigeration oil | |
| CN1898353B (en) | Compositions containing fluorine substituted olefins | |
| JP7126517B2 (en) | Heat transfer composition, method and system | |
| EP3395926A1 (en) | Method of recharging a heat transfer composition | |
| US11261360B2 (en) | Stabilized heat transfer compositions, methods and systems | |
| JP7446313B2 (en) | Stabilized heat transfer compositions, methods, and systems | |
| JP2024063145A (en) | Stabilized heat transfer compositions, methods, and systems | |
| CN115785908A (en) | Refrigerant for high-temperature air source heat pump | |
| CN115353921B (en) | Antiwear agent for refrigerator oil, and working fluid composition | |
| CN111944489B (en) | Composition containing fluorohydrocarbon and preparation method thereof | |
| CN1470626A (en) | Refrigerator grease composition | |
| CN114106916B (en) | Refrigerating machine oil composition, refrigerant and refrigerating machine oil composition and air conditioning system | |
| CN108517247A (en) | A kind of synthesis refrigerator oil and preparation method thereof | |
| CN113330091B (en) | Stabilized heat transfer compositions, methods, and systems | |
| US20230033281A1 (en) | Stabilizer compositions and stabilized heat transfer compositions, methods and systems | |
| CN111793514A (en) | Cold work refrigerating machine oil additive | |
| WO2023137025A1 (en) | Stabilized heat transfer compositions, methods and systems | |
| CN114317073A (en) | Mineral oil type refrigerator oil composition and preparation method and application thereof | |
| CN113025279A (en) | Composition containing fluoroolefin and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: C301, Building 4, No. 1669, North Section of Huoli Avenue, Cihu High tech Zone, Ma'anshan City, Anhui Province, 243000 Applicant after: Ma'anshan Corona Technology Co.,Ltd. Address before: 243000 C301, building 4, No. 1669, north section of huolishan Avenue, Cihu high tech Zone, Ma'anshan City, Anhui Province Applicant before: Ma'anshan noca Technology Co.,Ltd. |