CN1240804C - Environmental protection refrigerant - Google Patents
Environmental protection refrigerant Download PDFInfo
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- CN1240804C CN1240804C CN 200410025934 CN200410025934A CN1240804C CN 1240804 C CN1240804 C CN 1240804C CN 200410025934 CN200410025934 CN 200410025934 CN 200410025934 A CN200410025934 A CN 200410025934A CN 1240804 C CN1240804 C CN 1240804C
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- refrigerant
- propylene
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- refrigeration agent
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Abstract
The present invention discloses a long-term used environmental protection refrigerant, which is used in refrigerators, air-conditioners, heat pumps, etc. to replace the near-azeotropic mixed refrigerant of R22. The refrigerant contains 1, 1, 2, 2-tetrafluoroethane (R134a), propylene (R1270) and propane (R290) or single propylene (R1270) and belongs to the near-azeotropic mixed refrigerant. Compared with the existing substitute, the refrigerant of the present invention has the advantages of good thermal performance, no damage to the ozonosphere (ODP=0) and low greenhouse effect (GWP value), and the exhaust temperature of the working compressor is reduced by 12 to 20 DEG C at high-temperature environment as compared with the R22 system. In addition, the refrigerant is soluble to mineral oil and alkylbenzene lubrication oil in the existing R22 system and can be directly filled without changing the main parts of the existing equipment, so that the refrigerant can replace the refrigerant R22 for a long time.
Description
Technical field
The present invention relates to refrigeration agent, specially refer to a kind ofly be used for freezing, near azeotropic mixed refrigerant that equipment such as air-conditioning, heat pump substitute R22.
Background technology
Equipment such as refrigeration, air-conditioning, heat pump and cryogenic refrigerating system have used refrigeration agent R22 and R502 always since the midium or long term, found after deliberation that they had destruction to atmospheric ozone layer in 1974, and Greenhouse effect are arranged.For this reason, determined in the world developing country's (comprising China) to refrigeration agent R22 from the basic forbidding of the year two thousand twenty.
In recent years, the alternative work of air-conditioning refrigerant R22 has obtained very big progress, the comparative maturity that refrigeration agents such as R407c, R410a have been used in conditioner.But also there are some problems in these refrigeration agents, and for example the operating pressure of R410a is very high; R407c is a non-azeotropic refrigerant, leaks big to the Effect on Performance of refrigeration agent; In addition, R407c and R410a are HFC class mixtures, the alkylbenzene that uses with R22 in the original air-conditioning system and the intermiscibility of mineral substance lubricating oil are very poor, make the system oil return difficulty, with R407c and R410a intermiscibility preferably synthetic oil have that water absorbability is strong, poor stability, defective such as cost an arm and a leg, be applied to the HFC system and also can bring problems such as " copper plating ", kapillary obstruction.
Summary of the invention
Use the defective or the deficiency of alternative refrigerant at said system, the objective of the invention is to, the near azeotropic mixed refrigerant that provide a kind of and be used for freezing, equipment such as air-conditioning, heat pump substitutes R22.
The present invention is a kind of environment friendly refrigerating fluid, its refrigeration agent environmental performance is better, each parts works better of energy assurance system under hot environment, can substitute R22's and the lower refrigeration agent of Greenhouse effect (GWP value) for a long time, have good thermal property and thermal parameter, make it not need to change the equipment of existing refrigeration system and the mineral oil or the Alkyl Benzene Lubricating Oil of use, and can directly charge.
The technical solution that realizes above-mentioned purpose is, can substitute the near azeotropic mixed refrigerant of R22 for a long time, comprises the refrigeration agent of two kinds of prescriptions, and first kind of refrigeration agent be by 1,1,1,2-Tetrafluoroethane (molecular formula: CF
3CH
2F, refrigeration agent symbol: R134a), propane (molecular formula: CH
3CH
2CH
3, refrigeration agent symbol: R290) and propylene (molecular formula: CH
3CH=CH
2, the refrigeration agent symbol: R1270) form, its component concentration (weight percent) is: R134a is 15～60%, and R1270 is 2～80%, and R290 is 5～40%.
Second kind of environment friendly refrigerating fluid is 1,1,1, and the 2-Tetrafluoroethane is the mixture of R134a component and propylene (R1270), and the weight percent of the proportioning of this refrigeration agent is: R134a is 20～40%, and R1270 is 60～80%.
Refrigeration agent provided by the invention, its preparation method are that the material with above-mentioned each component carries out physical mixed by its corresponding mixture ratio and gets final product under liquid phase state.
R134a in the said components, molecular weight are 102.03, and normal boiling point is-26.16 ℃, and critical temperature is 101.1 ℃, and emergent pressure is 4.067MPa; The molecular weight of R290 is 44.10, and normal boiling point is-42.09 ℃, and critical temperature is 96.70 ℃, and emergent pressure is 4.248MPa; The R1270 molecular weight is 42.09, and normal boiling point is-47.70 ℃, and critical temperature is 91.80 ℃, and emergent pressure is 4.618MPa.
Therefore, adopt alternative refrigerant of the present invention, can reduce production costs and simplify production technique.
Embodiment
Below according to technical scheme of the present invention, and the present invention is further illustrated to provide the embodiment of indefiniteness, will help the understanding to the present invention and advantage thereof, and not as qualification of the present invention.
Embodiment one: R134a with 30% and 70% R1270 (weight percent) carry out physical mixed under liquid phase.
Embodiment two: the R134a with 40%, 55% R1270 and 5% R290 (weight percent) carry out physical mixed under liquid phase.
Embodiment three: the R134a with 50%, 25% R1270 and 25% R290 (weight percent) carry out physical mixed under liquid phase.
Embodiment four: the R134a with 55%, 5% R1270 and 40% R290 (weight percent) carry out physical mixed under liquid phase.
At Air-conditioner design operating mode (vaporization temperature t
0=7.2 ℃, suction temperature t
1=35.0 ℃, condensing temperature t
k=54.4 ℃, supercooling temperature t
s=46.1 ℃) under calculate according to the performance of theoretical cycle, the thermal property of above-mentioned refrigeration agent embodiment is listed in the table 1.
The comparison of the existing two kinds of alternative refrigerants of refrigeration agent among table 1 embodiment and R22
| R22 | R410a | R407c | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| ODP | 0.05 | 0 | 0 | 0 | 0 | 0 | 0 |
| GWP | 1700 | 1900 | 1600 | 392 | 522 | 652 | 716 |
| Evaporating pressure KPa slip temperature (℃) | 625.4 | 998.4 | 650.5 | 739.7 | 743.5 | 750.3 | 742.9 |
| 0 | 0.101 | 6.005 | 0.06 | 0.027 | 0.023 | 0.029 | |
| Condensing pressure KPa slip temperature (℃) | 2146 | 3383 | 2325 | 2434 | 2362 | 2348 | 2290 |
| 0 | 0.09 | 4.30 | 0.08 | 0.02 | 0.03 | 0.11 | |
| Pressure ratio | 3.43 | 3.39 | 3.57 | 3.29 | 3.18 | 3.13 | 3.08 |
| Exhaust temperature (℃) | 101.9 | 101.3 | 92.2 | 89.1 | 88.0 | 84.5 | 81.5 |
| COP* | 1 | 0.88 | 0.97 | 0.94 | 0.935 | 0.927 | 0.929 |
| Unit mass cold * | 1 | 0.98 | 0.96 | 1.41 | 1.29 | 1.14 | 1.08 |
| Volume refrigerating capacity compressor * | 1 | 1.34 | 1.01 | 1.003 | 0.998 | 0.978 | 0.956 |
* be corresponding comparative figure with R22.
As can be seen from the above table: 1. the environmental performance ODP of these four embodiment and GWP are all good than R22, and its GWP value is also good than existing two kinds of surrogate R410a and R407c; 2. the evaporation of these four embodiment, condensing pressure and R22 are suitable, and pressure ratio is lower than R22, R407c, R410a, help improving the efficient of compressor, have energy-conservation potentiality; 3. the unit mass refrigerating duty of these four embodiment and R22, R410a and R407c ten minutes are approaching; 4. the coefficient of performance of their coefficient of performance and original R22 refrigeration agent is approaching; 5. their volume refrigerating capacity compressor and R22, R407c ten minutes are approaching, adopt the change minimum of this kind refrigeration agent to original refrigeration system compressor; 5. under the standard air conditioning condition, their exhaust temperature is lower than R22 and R410a12～20 ℃, also be lower than R407c, this makes the refrigeration system that adopts this model mixture refrigeration agent normally to move under worse operating mode, for example can normally operation under the hot environment of desert area, torrid areas.In addition, because mineral oil or Alkyl Benzene Lubricating Oil in propane and propylene and the existing system mix, make this kind mix refrigerant also be dissolved in mineral oil and Alkyl Benzene Lubricating Oil.
The present invention compared with prior art, its environment is better, do not damage the ozone layer, can substitute for a long time R22, and greenhouse effects (GWP value) are less, have good thermal property and thermal parameter, make its mineral oil or Alkyl Benzene Lubricating Oil of not needing to change existing R22 refrigeration system equipment and use, and can directly charge.
Claims (2)
1. environment friendly refrigerating fluid, by 1,1,1,2-Tetrafluoroethane, propylene and propane mix to be formed, and it is characterized in that the weight percent of the proportioning of this refrigeration agent is: 1,1,1, the 2-Tetrafluoroethane is 15～60%, and propylene is 2～80%, and propane is 5～40%.
2. environment friendly refrigerating fluid, by 1,1,1,2-Tetrafluoroethane and propylene mix to be formed, and it is characterized in that the weight percent of the proportioning of this refrigeration agent is: 1,1,1, the 2-Tetrafluoroethane is 20～40%, propylene is 60～80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025934 CN1240804C (en) | 2004-03-11 | 2004-03-11 | Environmental protection refrigerant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025934 CN1240804C (en) | 2004-03-11 | 2004-03-11 | Environmental protection refrigerant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1560174A CN1560174A (en) | 2005-01-05 |
| CN1240804C true CN1240804C (en) | 2006-02-08 |
Family
ID=34441192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410025934 Expired - Fee Related CN1240804C (en) | 2004-03-11 | 2004-03-11 | Environmental protection refrigerant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1240804C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0610124D0 (en) | 2006-05-20 | 2006-06-28 | Earthcare Products Ltd | Natural alternatives to r410a refrigerant |
| CN113388371B (en) * | 2021-06-07 | 2022-06-24 | 湖北瑞能华辉能源管理有限公司 | Quaternary mixed refrigerant capable of replacing R22 or R410a and application thereof |
| CN114752356B (en) * | 2022-03-29 | 2023-12-19 | 华中科技大学 | Refrigerant and application thereof |
| CN115287042A (en) * | 2022-07-21 | 2022-11-04 | 北京大学南昌创新研究院 | Mixed refrigerant replacing R404A and preparation method thereof |
-
2004
- 2004-03-11 CN CN 200410025934 patent/CN1240804C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1560174A (en) | 2005-01-05 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060208 Termination date: 20110311 |