CN1053211C - Refrigerant substituted for freon-12 for long time - Google Patents
Refrigerant substituted for freon-12 for long time Download PDFInfo
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- CN1053211C CN1053211C CN95117039A CN95117039A CN1053211C CN 1053211 C CN1053211 C CN 1053211C CN 95117039 A CN95117039 A CN 95117039A CN 95117039 A CN95117039 A CN 95117039A CN 1053211 C CN1053211 C CN 1053211C
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Abstract
The present invention relates to a refrigerant for substituting freon-12 for a long time, which belongs to the refrigeration working substances in refrigerators, air-conditioners, heat pumps, etc. The refrigerant of the present invention is prepared by mixing FC-1311 with R290, or mixing the two substances with one of HFC-152a and HFC-227 ea, or mixing one of the FC-1311 or the R290 with the HFC-152a and the HFC-227 ea. The refrigerant is an incombustible hypoazeotropic mixture without toxicity and has the advantages of good thermal performance, no damage to the ozonosphere (ODP=0), no influence on the greenhouse effect, no light and fog reaction, environmental protection, no need for changing the original equipment and refrigeration oil and reforming the production line, and superior performance to other existing substitutes, and therefore, the refrigerant of the present invention can be fully used as a refrigerant for substituting the freon-12 for a long time.
Description
The invention belongs to the refrigeration agent that uses in the equipment such as refrigeration, air-conditioning, heat pump.
In the prior art, the refrigeration agent as devices such as refrigerator, refrigerator-freezer, automative air conditionings mostly uses CFC-12 for a long time.Since it have hypotoxicity, not flammable, do not have a corrosion, with other material characteristics such as compatibility mutually, be widely used in refrigeration system and some other fields for many years.But since finding that CFC class material had a havoc effect to atmospheric ozone layer in 1974, caused increasingly extensive in the world attention, and decision production and the use of CFCs have progressively been limited.
At present, the main refrigeration of CFC-12 is made as HFC-134a as an alternative, and its advantage is not damage the ozone layer, thermal property and CFC-12 are close, its utilisation technology also reaches its maturity, but when promoting the use of HFC-134a, has but brought a series of requirements different with CFC-12.For example the aspects such as some major equipments, refrigeration oil and technology in the refrigeration system have all been proposed a series of new requirements, thereby the inconvenience part has been arranged in actual use.In addition, its Greenhouse effect GWP value is also higher.So it is still undesirable.In recent years, Germany uses some hydrocarbon polymer such as Trimethylmethane substitute CFC-12, and its advantage is that thermal property is good, but it is flammable, explosion hazard becomes the major obstacle of applying all the time.
For carrying out explosion-proof processing, expensive bigger, and the optical haze reaction is arranged.For overcoming above-mentioned defective, the binary mixture HCFC22/HFC152a better performances of Tsing-Hua University's research and development, but HCFC22 wherein also will belong to the row of forbidding, and therefore also can only be as transitional surrogate.
The present invention is intended to develop new refrigeration agent, is inferior azeotropic mixture not only, and thermal property is good, and compliance with environmental protection requirements is safe, reliable, efficient, and need not change existing equipment and refrigeration oil; And can directly charge, be a kind of refrigeration agent (being called THR02) of chronicity CFC alternative-12
The refrigeration agent of this chronicity CFC alternative-12 provided by the invention is characterized in that this refrigeration agent is made up of FC-1311 ＇ and two kinds of materials of R290, and its component concentration (weight percent) is:
FC-1311：80-95％
R290 ：5-20％
Or form by FC-1311, R290 and three kinds of materials of HFC-152a, its content (weight percent) is:
FC-1311：60-90％
R290 ：3-10％
HFC-152a：5-35％
Also can change above-mentioned HFC-152a into HFC-227ea, promptly be made up of FC-1311, R290 and three kinds of materials of HFC-227ea, its content (weight percent) is:
FC-1311 ：55-85％
R290 ：5-20％
HFC-227ea：5-25％
Above-mentioned refrigeration agent, can also with a kind of material among FC-1311 and the R290 respectively with HFC-152a and two kinds of combinations of substances of HFC-227ea.
If during with FC-1311 and HFC-152a and three kinds of combinations of substances of HFC-227ea, its content (weight percent) is:
FC-1311 ：40-85％
HFC-152a ：7-50％
HFC-227ea：3-30％
If during with R290 and HFC-152a and three kinds of combinations of substances of HFC-227ea, its content (weight percent) is:
R290 ：5-15％
HFC-152a ：30-45％
HFC-227ea：40-65％
Refrigeration agent provided by the invention, its preparation method are above-mentioned each component to be carried out physical mixed by its corresponding mixture ratio get final product under liquid phase state.
FC-1311 in the said components promptly is called CF3I, and its molecular formula is CF3I, and molecular weight is 195.91, normal boiling point-22.5 ℃, and critical temperature is 121.9 ℃, emergent pressure is 4.04MPa.
R290 also claims propane, and molecular formula is C3H8, and molecular weight is 44.01, and normal boiling point is-42.1 ℃, and critical temperature is 113.3 ℃, and emergent pressure is 4.52MPa.
HFC-152a, its molecular formula is CH3CHF2, and molecular weight is 66.05, and normal boiling point is-24 ℃, and critical temperature is that 96.8 ℃ of emergent pressures are 4.25MPa.
HFC-227ea also claims heptafluoro-propane, and its molecular formula is CF3CHFCF3, and molecular weight is 170.03, and normal boiling point is-18.3 ℃, and critical temperature is 103.5 ℃, and emergent pressure is 2.95MPa.
Embodiment:
Embodiment 1: FC-1311 with 80% (CF3I) and 20% R290 carry out physical mixed under liquid phase.
Embodiment 2: FC-1311 with 70% (CF3I) and 10% R290 and three kinds of materials of HFC-152a of 20% mix under liquid phase.
Embodiment 3: FC-1311 with 70% (CF3I) and 20% R290 (C3H8) and three kinds of material liquid-phase mixing of HFC-227ea of 10%.
Embodiment 4: three kinds of material liquid-phase mixing of the HFC-227ea of the FC-1311 with 50% and 40% HFC-152a and 10%.
Embodiment 5: with the HFC-152a of 10%R290 and 40% and three kinds of material liquid-phase mixing of HFC-227ea of 50%.
Under the design conditions of refrigerator, the thermal property of the foregoing description refrigeration agent is listed in the table 1.
Table 1 embodiment thermal property relatively
Annotate: be corresponding ratio with CFC-12.
| Embodiment | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Evaporating pressure MPa | 0.14 | 0.13 | 0.13 | 0.11 | 0.13 |
| Condensing pressure MPa | 1.42 | 1.43 | 1.41 | 1.34 | 1.5 |
| Pressure ratio | 10.5 | 11.0 | 10.6 | 12.0 | 11.3 |
| Exhaust temperature ℃ | 141.3 | 146.8 | 136.1 | 147.0 | 127.4 |
| COP * | 1.01 | 1.01 | 1.00 | 1.02 | 0.96 |
| Cold * | 1.05 | 1.12 | 0.94 | 1.21 | 1.31 |
| Volume refrigerating capacity compressor * | 1.05 | 1.04 | 1.01 | 0.93 | 0.99 |
| ODP | 0 | 0 | 0 | 0 | 0 |
| GWP | ＜10 | ＜50 | ＜350 | ＜400 | ＜1700 |
The present invention compared with prior art has the following advantages and beneficial effect (in the present invention a kind of as example):
A, environmental performance:
This cold-producing medium ozone layer destroying potential (ODP) is zero, its greenhouse effects coefficient (GWP)＜50, baze-free reaction (VOC). This shows that the present invention meets Ozonosphere protection fully, do not affect greenhouse effects, the environmental protection requirement of baze-free reaction, table 2 has provided the comparison with the environmental performance of CFC-12 and other substitute.
The comparison of table 2 environmental performance
| Cold-producing medium | CFC-12H | HCF-134a | Iso-butane | The present invention |
| ODP | 1.0 | 0 | 0 | 0 |
| GWP (100 years) | 8500 | 1300 | 0 | ＜50 |
| VOC | 0.1 | 0.6 | 200 | Nothing |
B, thermal parameter:
Under the design conditions of refrigerator, the force value of the cold-producing medium in evaporimeter, the condenser, the pressure ratio of compressor and delivery temperature and CFC-12-12 ten minutes are close, and except delivery temperature is omited height, other all is better than used substitute HFC-134a and iso-butane, for example the evaporating pressure of iso-butane is in the vacuum operation less than 1 atmospheric pressure, and air easily bleeds; Therefore the pressure ratio of HFC-134a and iso-butane all is higher than the present invention, uses when of the present invention, and the volumetric efficiency of compressor is than they height.
The comparison of table 3 thermal parameter
C, thermal property
| Cold-producing medium | CFC-12 | HCF-134a | Iso-butane 600a | The present invention |
| Evaporating pressure MPa | 0.129 | 0.115 | 0.039 | 0.12 |
| Condensing pressure | 1.352 | 1.475 | 0.556 | 1.35 |
| Pressure ratio | 10.46 | 12.85 | 14.1 | 11.6 |
| Delivery temperature ℃ | 145.7 | 134.9 | 188.1 | 151.5 |
The thermal property of this cold-producing medium (COP and refrigerating capacity) is better than CFC-12, referring to table 4. Volume refrigerating capacity compressor approximates CFC-12, and this shows, this cold-producing medium can directly use the compressor of crude CFC-12 and need not change, and the volume refrigerating capacity compressor of iso-butane is very little, and former compressor must be transformed.
Table 4 thermal property relatively
| Cold-producing medium | CFC-12 | HCF-134a | Iso-butane | The present invention |
| COP | 1.0 | 0.98 | 1.04 | 1.02 |
| Cold | 1.0 | 1.25 | 2.43 | 1.16 |
| Volume refrigerating capacity compressor | 1.0 | 0.93 | 0.35 | 0.97 |
In sum, it is good that the present invention not only has thermal property, and do not damage the ozone layer, and do not affect greenhouse effects, and the baze-free reaction meets environmental requirement fully. Be a kind of nontoxic, non-flammable inferior azeotropic mixture (slip temperature is less than 1 ℃), applicable to former refrigeration oil and directly perfusion, the critical piece in its compressor and the system need not changed, and production line need not transformed. Be better than existing other substitute in performance, can be used as the cold-producing medium of chronicity CFC alternative-12 fully. The refrigerator Thermal Performance Test shows that the thermal properties such as its cooling rate, starting performance, refrigerating chamber and storage a surname room temperature all meet China's national standard fully, and than the energy-conservation 15-20% that reaches of crude CFC-12; Filling quantity of refrigerant reduces about 20%.
Claims (2)
1, a kind of refrigeration agent of substituted for freon-12 for long time contains CF3I, it is characterized in that this refrigeration agent also contains 1,1,1,2,3,3, and two kinds of its weight percent contents of material of 3-heptafluoro-propane and propane are:
CF3I: 55-85%
1,1,1,2,3,3,3-heptafluoro-propane: 5-25%
Propane: 5-20%
2, a kind of refrigeration agent of substituted for freon-12 for long time contains CF3I, it is characterized in that also containing 1,1,1,2,3,3,3-heptafluoro-propane and 1, and the 1-C2H4F2 C2H4F2, its weight percent content is:
CF3I: 40-85%
1,1,1,2,3,3,3-heptafluoro-propane: 3-30%
1,1-C2H4F2 C2H4F2: 7-50%
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95117039A CN1053211C (en) | 1995-10-20 | 1995-10-20 | Refrigerant substituted for freon-12 for long time |
| PCT/CN1996/000093 WO1997015637A1 (en) | 1995-10-20 | 1996-10-18 | Refrigerant |
| AU72769/96A AU7276996A (en) | 1995-10-20 | 1996-10-18 | Refrigerant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95117039A CN1053211C (en) | 1995-10-20 | 1995-10-20 | Refrigerant substituted for freon-12 for long time |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1148613A CN1148613A (en) | 1997-04-30 |
| CN1053211C true CN1053211C (en) | 2000-06-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95117039A Expired - Fee Related CN1053211C (en) | 1995-10-20 | 1995-10-20 | Refrigerant substituted for freon-12 for long time |
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| Country | Link |
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| CN (1) | CN1053211C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2318481T3 (en) * | 2004-04-16 | 2009-05-01 | Honeywell International Inc. | COMPOSITION OF AZEOTROPO TYPE TRIFLUOROIODOMETAN. |
| CN101824305B (en) * | 2010-04-06 | 2012-11-21 | 中国科学院理化技术研究所 | Trifluoroiodomethane-containing mixed refrigerant |
| CN102925108B (en) * | 2010-04-06 | 2015-03-18 | 中国科学院理化技术研究所 | Mixed refrigerant containing trifluoroiodomethane |
| CN102925109B (en) * | 2010-04-06 | 2014-09-03 | 中国科学院理化技术研究所 | Mixed refrigerant containing iodotrifluoromethane |
| CN107118746B (en) * | 2017-05-25 | 2020-04-28 | 华南理工大学 | Environment-friendly mixed refrigerant and preparation method thereof |
| CN110157383B (en) * | 2019-05-22 | 2020-12-18 | 山西省工业设备安装集团有限公司 | Ternary mixed working medium for heat supply heat pump |
| CN110746936B (en) * | 2019-10-11 | 2021-05-04 | 金华永和氟化工有限公司 | Environment-friendly mixed refrigerant |
| CN111423854B (en) * | 2020-05-13 | 2021-04-30 | 全球能源互联网研究院有限公司 | Mixed cold storage medium and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065085A (en) * | 1991-03-18 | 1992-10-07 | 联合信号股份有限公司 | Contain methylene fluoride; 1,1, the 1-Halothane; Or the refrigerant compositions of the non-azeotropic of propane |
| JPH04323294A (en) * | 1991-04-22 | 1992-11-12 | Daikin Ind Ltd | Fluid for heat transfer |
-
1995
- 1995-10-20 CN CN95117039A patent/CN1053211C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065085A (en) * | 1991-03-18 | 1992-10-07 | 联合信号股份有限公司 | Contain methylene fluoride; 1,1, the 1-Halothane; Or the refrigerant compositions of the non-azeotropic of propane |
| JPH04323294A (en) * | 1991-04-22 | 1992-11-12 | Daikin Ind Ltd | Fluid for heat transfer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1148613A (en) | 1997-04-30 |
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