CN115785909A - Heat transfer composition and application thereof - Google Patents
Heat transfer composition and application thereof Download PDFInfo
- Publication number
- CN115785909A CN115785909A CN202211356102.8A CN202211356102A CN115785909A CN 115785909 A CN115785909 A CN 115785909A CN 202211356102 A CN202211356102 A CN 202211356102A CN 115785909 A CN115785909 A CN 115785909A
- Authority
- CN
- China
- Prior art keywords
- hfc
- heat transfer
- transfer composition
- percent
- hfo
- 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
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Lubricants (AREA)
Abstract
Disclosed is a heat transfer composition comprising HFC-32, HFC-125, HFC-134a, HFO-1234yf, HFC-152a; or comprises HFC-32, HFC-125, HFC-134a, HFO-1234yf, CF 3 I, with GWP less than 1500, can directly replace R-404A in a heat transfer system designed for R-404A without changing any component, and has excellent refrigeration effect on low-temperature refrigeration, fast cooling rate and low energy consumption.
Description
Technical Field
The application relates to the field of refrigeration, in particular to a heat transfer composition, application thereof and a heat transfer system.
Background
The refrigerant is a medium substance for completing energy conversion in various heat engines, and mainly comprises fluorine-containing refrigerant. The fluorine refrigerant is prepared from hydrofluoric acid, chlorohydrocarbon and the like serving as raw materials, is an important organic fluorine chemical product, has strong chemical stability and excellent thermodynamic property, is mainly applied to the refrigeration fields of refrigerators, household air conditioners, automobile air conditioners, low-temperature refrigeration and the like, and drives and supports trillion related industries.
Due to environmental concerns, hydrofluorocarbons (HFCs) and their compositions in use today are being replaced gradually because of their relatively high GWP values (global warming potential). Increasingly, low GWP fluids, such as Hydrofluoroolefins (HFOs), are being investigated for use. Many governments have signed the Kyoto Protocol to protect the global environment and propose to reduce CO2 emissions. Therefore, there is a need for alternatives to HFCs with high GWP values.
Cryogenic refrigeration systems are particularly important in the food manufacturing, distribution and retail industries, where they can ensure that food products delivered to a consumer are both fresh and suitable for consumption. In such cryogenic refrigeration systems, the refrigerant typically used is R-404A, which has a composition of R125/143a/134A44/52/4%. R-404A has a GWP of 3922. The kyoto protocol proposed a cut-down in this high GWP refrigerant. Since 2015, the use of the developed countries and regions such as the european union and japan has been prohibited.
At present, various mixed refrigerants for replacing R-404A exist, and GWP values are related from below 150 to about 2000. Such as the R-407 series and R-448 to R-454, it has been found by comparison that compositions having GWP values below 150 are flammable, belonging to the A2 class, with a certain safety risk in the case of large charges. The refrigerant with the GWP of 1000-1500 belongs to the grade A1, is safe and reliable, cannot be eliminated in a short period, is a direction of important research and development, and has important layout in many enterprises.
The composition contains five components, and compared with the composition containing R32, R125, R1234yf and CF mentioned in CN111788277A patent 3 The four components I are added with R134a and R152a, the system exhaust temperature can be reduced, the low exhaust temperature can protect the compressor, the high-temperature alarm protection is not caused, and the expensive control measures can be avoided for monitoring.
With respect to the four-component compositions of R32, R125, R1234yf and R134a mentioned in the reference CN102947410A, R152a or CF is added in the application 3 I, can reduce the GWP value of the composition, improve the flammability of the composition and ensure that the composition is safer and more environment-friendly.
Disclosure of Invention
In view of the above, it is an object of the present application to provide a heat transfer composition, which is capable of directly replacing R-404A in a heat transfer system designed for R-404A without changing any components, and has excellent refrigeration effect on low-temperature freezing, a fast cooling rate, and low energy consumption, and applications thereof, and a heat transfer system.
Embodiments of the present application provide a heat transfer composition comprising HFC-32, HFC-125, HFC-134a, HFO-1234yf, HFC-152a; or includes HFC-32, HFC-125, HFC-134a, HFO-1234yf, CF 3 I。
Preferably, the heat transfer composition comprises the following components in percentage by mass:
HFC-32 16.0％-27.0％，
HFC-125 27.0％-38.5％，
HFC-134a 14.0％-24.5％，
HFO-1234yf 15.0％-32.0％，
HFC-152a 1.0％-4.0％；
the sum of the mass percentages of the components is 100 percent.
Preferably, the heat transfer composition comprises the following components in percentage by mass:
HFC-32 19.0％-26.5％，
HFC-125 19.5％-30.0％，
HFC-134a 20.0％-28.0％，
HFO-1234yf 15.0％-30.0％，
CF 3 I 3.0％-8.0％；
the sum of the mass percentages of the components is 100 percent.
Preferably, the heat transfer composition consists of the following components in percentage by mass: 16.0 percent of HFC-32, 38.0 percent of HFC-125, 14.0 percent of HFC-134a, 31.0 percent of HFO-1234yf and 1.0 percent of HFC-152a.
Preferably, the heat transfer composition consists of the following components in percentage by mass: HFC-32.0%, HFC-125.0%, HFC-134a 19.0%, HFO-1234yf32.0%, HFC-152a 2.0%.
Preferably, the heat transfer composition consists of the following components in percentage by mass: HFC-32.0%, HFC-125.0%, HFC-134a 24.0%, HFO-1234yf 15.0%, HFC-152a 4.0%.
Preferably, the heat transfer composition consists of the following components in percentage by mass: HFC-32.0%, HFC-125.0%, HFC-134a 21.0%, HFO-1234yf 30.0%, CF 3 I3.0％。
Preferably, the heat transfer composition consists of the following components in percentage by mass: HFC-32.0%, HFC-125.0%, HFC-134a 24.0%, HFO-1234yf 16.0%, CF 3 I7.0％。
Preferably, the heat transfer composition consists of the following components in percentage by mass: HFC-32.0%, HFC-125.0%, HFC-134a 28.0%, HFO-1234yf 21.0%, CF 3 I5.0％。
Preferably, the heat transfer composition is used in a replacement refrigerant for R-404A.
The present embodiments also provide for the use of the above-described heat transfer compositions in the heat transfer system of R-404A in place of R-404A.
The embodiment of the application also provides a heat transfer system, which takes the heat transfer composition as a heat transfer medium, and has better effect when the lubricating oil is a mixed oil of mineral oil and polyol ester (POE) oil.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. the heat transfer composition provided by the application has an ODP value of zero and a GWP of less than 1500, is an environment-friendly refrigerant, is non-flammable and belongs to an A1-grade refrigerant.
2. The heat transfer composition provided by the application can replace R-404A to be used, the temperature and pressure of each area in the system operation are closer to those of R-404A, the operation of R-404A in the system can be perfectly replaced, the cooling time can be shortened, and the energy consumption can be reduced.
3. The heat transfer composition provided by the application can replace R-404A to be used, and the COP under the same working condition is improved by more than 10% compared with that of R404A.
4. The heat transfer composition provided by the application can be used instead of R-404A, and can reduce the exhaust temperature of a compressor during system operation, so that the compressor and the system are protected better.
5. When the lubricating oil in the heat transfer composition is mixed oil of mineral oil and polyol ester (POE) oil, the heat transfer system operates more stably and saves more energy.
Drawings
FIG. 1 is a graph of temperature versus gas-liquid phase pressure comparison of a heat transfer composition of example 1 of the present application with R-404A;
FIG. 2 is a graph of temperature versus gas-liquid phase pressure comparison of a heat transfer composition of example 2 of the present application with R-404A;
FIG. 3 is a temperature versus gas-liquid phase pressure comparison of the heat transfer composition of example 3 of the present application with R-404A;
FIG. 4 is a graph of temperature versus gas-liquid phase pressure comparison of the heat transfer composition of example 4 of the present application with R-404A;
FIG. 5 is a graph of temperature versus gas-liquid phase pressure comparison of the heat transfer composition of example 5 of the present application with R-404A;
FIG. 6 is a temperature versus gas-liquid phase pressure comparison of the heat transfer composition of example 6 of the present application with R-404A;
Detailed Description
In order to facilitate the understanding of the scheme of the present application by those skilled in the art, the following further describes the scheme of the present application with reference to specific examples, and it should be understood that the examples of the present application are illustrative of the scheme of the present application and are not intended to limit the scope of the present application.
The embodiment of the application provides a heat transfer composition, the heat transfer composition can directly replace R-404A, any component does not need to be changed in the replacement process, the heat transfer composition has an excellent refrigeration effect on low-temperature refrigeration, and is high in cooling rate and low in energy consumption.
In order to solve the above problems, the technical solution in the embodiment of the present application has the following general idea:
the present embodiments provide a heat transfer composition comprising HFC-32, HFC-125, HFC-134a, HFO-1234yf, HFC-152a; or includes HFC-32, HFC-125, HFC-134a, HFO-1234yf, CF 3 I。
In a preferred embodiment of the present application, the heat transfer composition comprises the following components in mass percent:
HFC-32 16.0％-27.0％，
HFC-125 27.0％-38.5％，
HFC-134a 14.0％-24.5％，
HFO-1234yf 15.0％-32.0％，
HFC-152a 1.0％-4.0％；
the sum of the mass percentages of the components is 100 percent.
In a preferred embodiment of the present application, the heat transfer composition comprises the following components in mass percent:
HFC-32 19.0％-26.5％，
HFC-125 19.5％-30.0％，
HFC-134a 20.0％-28.0％，
HFO-1234yf 15.0％-30.0％，
CF 3 I 3.0％-8.0％；
the sum of the mass percentages of the components is 100 percent.
In a preferred embodiment of the present application, the heat transfer composition comprises the following components in percentage by mass: 16.0 percent of HFC-32, 38.0 percent of HFC-125, 14.0 percent of HFC-134a, 31.0 percent of HFO-1234yf and 1.0 percent of HFC-152a.
Or the heat transfer composition comprises the following components in percentage by mass: HFC-32.0%, HFC-125.0%, HFC-134a 19.0%, HFO-1234yf32.0%, HFC-152a 2.0%.
Or the heat transfer composition comprises the following components in percentage by mass: 26.0 percent of HFC-32, 31.0 percent of HFC-125, 24.0 percent of HFC-134a, 15.0 percent of HFO-1234yf and 4.0 percent of HFC-152a.
Or the heat transfer composition comprises the following components in percentage by mass: HFC-32.0%, HFC-125.0%, HFC-134a 21.0%, HFO-1234yf 30.0%, CF 3 I3.0％。
Or the heat transfer composition comprises the following components in percentage by mass: HFC-32.0%, HFC-125.0%, HFC-134a 24.0%, HFO-1234yf 16.0%, CF 3 I7.0％。
Or the heat transfer composition comprises the following components in percentage by mass: HFC-32.0%, HFC-125.0%, HFC-134a 28.0%, HFO-1234yf 21.0%, CF 3 I5.0％。
The heat transfer compositions provided in the examples herein are useful as replacement refrigerants for R-404A.
The heat transfer compositions described above, provided by the examples herein, can be used in place of R-404A in the heat transfer system of R-404A.
The embodiment of the application also provides a heat transfer system, which takes the heat transfer composition as a heat transfer medium, and has better effect when the lubricating oil is mixed oil of mineral oil and polyol ester (POE) oil.
The heat transfer composition provided by the application can be obtained by physically mixing the components in a liquid phase state according to corresponding proportions.
For better understanding of the above technical solutions, the following detailed descriptions will be provided with reference to the drawings and specific embodiments of the specification, but the present invention is not limited thereto.
Examples
TABLE 1 component ratios of Heat transfer compositions
The heat transfer compositions of examples 1-6 were tested for temperature-liquid phase pressure change and temperature-gas phase pressure change, respectively, with respect to R-404A of comparative example 1, to provide the temperature-gas liquid phase pressure comparison plots of fig. 1-6, from which it can be seen that the heat transfer compositions provided herein closely approximate the temperature-gas liquid phase pressure change curves of R-404A, i.e., the temperature and pressure in each zone are relatively close to that of R-404A when operating in a refrigeration system, and thus can be operated within the system in place of R-404A in a refrigeration system designed for R-404A.
Comparative examples 2 to 5 are compositions identical to the components of the present invention but with component ratios outside the claimed range, and comparative examples 6 and 7 are heat transfer compositions disclosed in prior art CN102947410A and CN 111788277A. The following tests will be compared under the same operating conditions.
And (3) testing the refrigeration performance:
the refrigeration performance tests of examples 1-6 and comparative examples 1-7 were performed on a loaded ultra-low temperature freezer, 3 parallel experiments were performed on each group of formulations, and the average value was taken to compare the cooling rate and the power consumption. And (3) testing conditions: the environmental temperature is 30 ℃, the load of the ultra-low temperature freezer is set to be minus 45 ℃, and the evaporation temperature is minus 55 ℃. The results of the tests obtained are shown in tables 2 and 3.
TABLE 2 time spent in the ultra-low temperature freezer when the temperature is lowered to a given temperature
TABLE 3 Power consumption when the temperature in the ultra-low temperature freezer falls to a given temperature
According to the experimental data in tables 2 and 3, it can be seen that when the temperature in the loaded ultra-low temperature freezer is reduced to-45 ℃, the average cooling time is reduced by 13-20% compared with that of the R-404A in comparative example 1 when the heat transfer compositions of examples 1-6 are used, and the cooling time is significantly reduced; the power consumption is reduced by 12-19%, and the effect of improving efficiency and saving energy is obvious. Compared with comparative examples 2 to 7, examples 1 to 6 also shorten the cooling time and save more energy.
The examples 1 to 6 and the comparative examples 1 to 7 were tested on a refrigerant performance test platform, and the temperatures of the condensation end and the evaporation end under the test conditions were respectively as follows: the refrigeration capacity and COP were measured at 25 ℃ and 20 ℃, 30 ℃ and 20 ℃ and 40 ℃ and 20 ℃ respectively, and the results are shown in tables 4, 5 and 6.
TABLE 4 comparison of the refrigerating capacity with COP for different compositions at 25 ℃
According to the experimental data in the table 4, when the ambient temperature of the condensation side is 25 ℃, the temperature is reduced to-20 ℃ and kept stable, compared with comparative example 1, the refrigeration capacity of examples 1-6 is improved by 4% -9%, and the COP is improved by 7% -14%; examples 1-6 also exhibited different increases in refrigeration capacity and COP compared to comparative examples 2-7. The discharge temperatures of examples 1 to 6 were lower by about 10 ℃ than that of comparative example 1 and lower by 20 ℃ or more than that of comparative example 7, and the compressor could be protected more effectively.
TABLE 530 ℃ refrigeration capacity vs. COP for different compositions
According to the experimental data in the table 5, when the ambient temperature of the condensation side is 30 ℃, the temperature is reduced to-20 ℃ and kept stable, compared with comparative example 1, in examples 1-6, the refrigerating capacity is improved by 3% -8%, and the COP is improved by 4% -11%; examples 1-6 also had different increases in refrigeration capacity and COP compared to comparative examples 2-7. The exhaust temperatures of examples 1 to 6 were lower by 10 ℃ or more than that of comparative example 1 and lower by about 25 ℃ than that of comparative example 7, and the compressor could be protected more effectively.
TABLE 640 ℃ refrigeration capacity vs. COP for different compositions
According to the experimental data in the table 6, when the ambient temperature of the condensation side is 40 ℃, the temperature is reduced to-20 ℃ and kept stable, compared with comparative example 1, the refrigeration capacity of examples 1-6 is improved by 2% -7%, and the COP is improved by 3% -10%; examples 1-6 also exhibited different increases in refrigeration capacity and COP compared to comparative examples 2-7. The discharge temperatures of examples 1 to 6 were lower by about 15 ℃ than that of comparative example 1 and lower by 25 ℃ or more than that of comparative example 7, and the compressor could be protected more effectively.
Due to CF 3 I and mineral oil are better in solubility, and in the embodiments 4 to 6, more foams are generated during operation in equipment, so that different lubricating oil is adopted for mixed use, the embodiment 4 is continuously tested on a refrigerant performance test platform, and the temperatures of a condensation end and an evaporation end under test conditions are respectively as follows: the refrigeration capacity and COP were also measured at 30 ℃/-20 ℃ and the results are shown in Table 7.
TABLE 730 deg.C REFRIGERATION AND COP COMPARATIVE FOR EXAMPLE 4 OF DIFFERENT LUBRICATING OIL COMPOSITIONS
According to the experimental data in table 7, when the ambient temperature of the condensation side is 30 ℃, the temperature is reduced to-20 ℃ and kept stable, when different mixed lubricating oil is adopted, the refrigerating capacity is not changed greatly, the power of the compressor can be reduced remarkably, and the COP is improved by 5%, 8% and 2% respectively compared with that of example 4; compared with the comparative ratio of 1,COP, the COP is improved by 17 percent, 20 percent and 14 percent, and the energy-saving effect is obvious.
Finally, the above embodiments are only used for illustrating the technical solutions of the present application and not for limiting, although the present application is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application, and all the technical solutions of the present application should be covered by the claims of the present application.
Claims (10)
1. A heat transfer composition characterized in that said heat transfer composition comprises HFC-32, HFC-125, HFC-134a, HFO-1234yf, HFC-152a; or comprises HFC-32, HFC-125, HFC-134a, HFO-1234yf, CF 3 I。
2. The heat transfer composition of claim 1, wherein the heat transfer composition comprises the following components in percent by mass:
the sum of the mass percentages of the components is 100 percent.
3. The heat transfer composition of claim 1, wherein the heat transfer composition comprises the following components in percent by mass:
the sum of the mass percentage of the components is 100 percent.
4. The heat transfer composition of claim 1, wherein the heat transfer composition is comprised of the following components in mass percent:
16.0 percent of HFC-32, 38.0 percent of HFC-125, 14.0 percent of HFC-134a, 31.0 percent of HFO-1234yf, 1.0 percent of HFC-152aI; or HFC-32.0%, HFC-125.0%, HFC-134a 19.0%, HFO-1234yf32.0%, HFC-152a2.0%; or HFC-32.0%, HFC-125.0%, HFC-134a 24.0%, HFO-1234yf 15.0%, HFC-152a 4.0%; or HFC-32.0%, HFC-125.0%, HFC-134a 21.0%, HFO-1234yf 30.0%, CF 3 I, 3.0 percent; or HFC-32.0%, HFC-125.0%, HFC-134a 24.0%, HFO-1234yf 16.0%, CF 3 I7.0%; or HFC-32.0%, HFC-125.0%, HFC-134a 28.0%, HFO-1234yf 21.0%, CF 3 I5.0％。
5. The heat transfer composition of any of claims 1-4, wherein the heat transfer composition is used as a substitute refrigerant for R-404A, and the COP of the heat transfer composition under the same working condition is improved by more than 10% compared with that of R404A, and the heat transfer composition can shorten the cooling time and reduce the energy consumption.
6. Use of a heat transfer composition as claimed in any of claims 1 to 5 in a heat transfer system for R-404A in place of R-404A.
7. A heat transfer system using the heat transfer composition of claims 1-5.
8. The heat transfer system of claim 7 wherein the heat transfer system is a heat transfer system designed for R-404A and R-404A in the heat transfer system is replaced by the heat transfer composition.
9. A composition comprising the heat transfer composition of claims 1-5 and a lubricating oil.
10. The composition of claim 9, wherein the lubricating oil is a mineral oil and/or a polyol ester (POE) oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211356102.8A CN115785909A (en) | 2022-11-01 | 2022-11-01 | Heat transfer composition and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211356102.8A CN115785909A (en) | 2022-11-01 | 2022-11-01 | Heat transfer composition and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115785909A true CN115785909A (en) | 2023-03-14 |
Family
ID=85434801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211356102.8A Pending CN115785909A (en) | 2022-11-01 | 2022-11-01 | Heat transfer composition and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115785909A (en) |
-
2022
- 2022-11-01 CN CN202211356102.8A patent/CN115785909A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3026092B1 (en) | Use of heat transfer composition in low temperature refrigeration system | |
| CA2947965C (en) | Low gwp heat transfer compositions | |
| US8940180B2 (en) | Low GWP heat transfer compositions | |
| US20190153282A1 (en) | Low gwp heat transfer compositions | |
| CN110878195B (en) | Coolant containing trifluoroiodomethane, mixture containing coolant and heat exchange system | |
| CN110878196B (en) | Quaternary mixed environment-friendly refrigerant and composition | |
| JP2015214706A (en) | Heat transfer compositions and heat transfer methods | |
| CN109971433B (en) | Multi-component mixed refrigerant | |
| US9783721B2 (en) | Low GWP heat transfer compositions | |
| US20140166923A1 (en) | Compositions containing difluoromethane and fluorine substituted olefins | |
| WO2011038570A1 (en) | Refrigerant composition | |
| CN113388371A (en) | Quaternary mixed refrigerant capable of replacing R22 or R410a and application thereof | |
| CN114149791B (en) | Energy-saving environment-friendly heat pump working medium capable of realizing high-temperature heating and application thereof | |
| CN115785909A (en) | Heat transfer composition and application thereof | |
| CN114106777B (en) | High-temperature energy-saving environment-friendly heat pump working medium and application thereof | |
| CN114163977A (en) | Energy-saving environment-friendly hydrocarbon mixed refrigerant directly replacing R134a and application thereof | |
| WO2022017109A1 (en) | Composition containing fluorohydrocarbon and preparation method therefor | |
| CN113789156B (en) | Heat transfer composition and application thereof and heat transfer system | |
| CN114507508B (en) | Application of heat pump mixed working medium | |
| CN113025279B (en) | Composition containing fluoroolefin and preparation method thereof | |
| CN114752357A (en) | Energy-saving environment-friendly refrigerant and application thereof | |
| Gajjar et al. | Replacement of R22 to manage lifetime operation of HCFC based equipments | |
| CN118703175A (en) | Environment-friendly binary mixed working medium and application thereof | |
| CN116814219A (en) | Mixed refrigerant and preparation method thereof | |
| EP2958972A1 (en) | Compositions containing difluoromethane and fluorine substituted olefins |
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 |