CN1814688A - Environment-protection refrigrant replacing HFC-134a - Google Patents
Environment-protection refrigrant replacing HFC-134a Download PDFInfo
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- CN1814688A CN1814688A CN 200610049650 CN200610049650A CN1814688A CN 1814688 A CN1814688 A CN 1814688A CN 200610049650 CN200610049650 CN 200610049650 CN 200610049650 A CN200610049650 A CN 200610049650A CN 1814688 A CN1814688 A CN 1814688A
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Abstract
This invention discloses an environmental refrigeration agent replacing HFC-134a including HFC-161 and HFC-152a, the mass percentage of which is: HFC-161:1-99%, HFC-152a: 1-99%, the ODP value of which is zero and does not break the atmospheric ozonosphere, compared with HFC-134a, the GWP is even smaller, the thermodynamic parameter is close to that of HFC-134a.
Description
Technical field
The present invention relates to refrigeration agent, relate in particular to the environment friendly refrigerating fluid of a kind of alternative HFC-134a.
Technical background
Because CFC-12 (methyl chlorofluoride) belongs to the ODS material that is under an embargo in the first batch and uses, developed country has stopped the production of CFC-12, China is also cutting down its turnout and usage quantity year by year, and finally stops to produce and using before 2010 except that maintenance is used comprehensively.HFC-134a (1,1,1, the 2-Tetrafluoroethane) is owing to have the physical properties close with CFC-12, and its ODP value is 0, be used as the CFC-12 first-selection, topmost surrogate and being widely used in the products such as automative air conditioning, refrigerator, refrigerator.The consumption of whole world HFC-134a is also increasing year by year, and its consumption in 2004 is about 15.5 ten thousand tons, and wherein the consumption of China is about 9600 tons, estimates that China's consumption in 2010 will reach more than 20,000 tons.
But there is a serious environmental problem in HFC-134a, and promptly to the Greenhouse effect of the earth, its global warming potential GWP (Global Warming Potential) value is 1300 (with CO
2As benchmark value 1.0), the Global warming effect is bigger.Severe situation in the face of Global climate change; the discharging that reduces greenhouse gases has become one of focus of global environmental protection; international community has produced Kyoto Protocol through unremitting effort, and its quantity and progress to the countries in the world GHG (Greenhouse Gases) emissions mitigation all has clear and definite regulation.The country of several super row's greenhouse gases will face serious punishment, and HFC-134a is listed in one of greenhouse gases of first batch of limiting emission.More and more paid attention to coming the environmental-protecting performance of comprehensive evaluation refrigeration agent in the world from protection ozonosphere and inhibition global warming two broad aspect; therefore, the work of seeking the refrigeration working medium that new environmental performance and thermal property all be better than HFC-134a has been imperative.
Summary of the invention
The object of the present invention is to provide the environment friendly refrigerating fluid of a kind of alternative HFC-134a.This refrigeration agent provided by the present invention does not only destroy atmospheric ozone layer, and Greenhouse effect are very little, meets current protection ozonosphere and suppresses the environmental requirement that global warming is laid equal stress on.In addition, also have thermal parameter and the thermal performance suitable, can be used as the long-term surrogate of HFC-134a with HFC-134a.
This refrigeration agent provided by the present invention is characterized in that this refrigeration agent contains fluoroethane (HFC-161) and 1, two kinds of components of 1-C2H4F2 C2H4F2 (HFC-152a), and its mass percent is:
HFC-161：1％-99％
HFC-152a：1％-99％
The mass percent of comparative optimization is:
HFC-161：5％-45％
HFC-152a：55％-95％
Most preferred mass percent is:
HFC-161：15％-25％
HFC-152a：75％-85％
Refrigeration agent of the present invention compared with prior art has the following advantages:
1) environmental performance is good, and not only depletion potential ODP value is 0, and global warming potential GWP value is significantly smaller than HFC-134a, compliance with environmental protection requirements, and this is sharpest edges of the present invention.
2) thermal parameter such as evaporating pressure, condensing pressure and pressure ratio and HFC-134a are close, substantially do not changing under the prerequisite of equipment major parts, thermal performance such as unit mass refrigerating duty, refrigerating effect per unit swept volume are better than HFC-134a, and the COP value is more than or equal to HFC-134a.Can be directly used in the system of former use HFC-134a, and can reduce filling quantity, improve Energy Efficiency Ratio, have the advantage of saving resource, save energy.This refrigeration agent can be used as the long-term surrogate of HFC-134a.
Embodiment
Refrigeration agent provided by the invention, its preparation method are with fluoroethane (HFC-161) and 1, and two kinds of components of 1-C2H4F2 C2H4F2 (HFC-152a) are carried out physical mixed according to its corresponding mixture ratio under liquid phase state.
Fluoroethane in the said components (HFC-161), its molecular formula are CH
3CH
2F, molecular weight are 48.06, and normal boiling point is-37.1 ℃, and critical temperature is 102.2 ℃, and emergent pressure is 4.70MPa.
In the said components 1, its molecular formula of 1-C2H4F2 C2H4F2 (HFC-152a) is CH
3CHF
2, molecular weight is 66.05, and normal boiling point is-24.02 ℃, and critical temperature is 113.26 ℃, and emergent pressure is 4.52MPa.
Provide specific embodiments of the invention below, these embodiment only are illustrative, and limit the scope of the invention anything but.
Embodiment 1: the mass percent by 1: 99 under liquid phase is carried out physical mixed with HFC-161 and HFC-152a.
Embodiment 2: the mass percent by 99: 1 under liquid phase is carried out physical mixed with HFC-161 and HFC-152a.
Embodiment 3: the mass percent by 5: 95 under liquid phase is carried out physical mixed with HFC-161 and HFC-152a.
Embodiment 4: the mass percent by 30: 70 under liquid phase is carried out physical mixed with HFC-161 and HFC-152a.
Embodiment 5: the mass percent by 15: 85 under liquid phase is carried out physical mixed with HFC-161 and HFC-152a.
Embodiment 6: the mass percent by 25: 75 under liquid phase is carried out physical mixed with HFC-161 and HFC-152a.
Embodiment 7: the mass percent by 45: 55 under liquid phase is carried out physical mixed with HFC-161 and HFC-152a.
Now performance and the HFC-134a with the foregoing description compares, and characteristics of the present invention and effect are described.
A. near azeotropic
The comparison of table 1 temperature glide (unit: ℃)
| Bubble point temperature | Dew-point temperature | Temperature glide | |
| Embodiment 1 | -24.59 | -24.24 | 0.35 |
| Embodiment 2 | -36.99 | -36.99 | 0 |
| Embodiment 3 | -26.52 | -25.6 | 1.46 |
| Embodiment 4 | -32.71 | -29.99 | 2.72 |
| Embodiment 5 | -29.84 | -27.09 | 2.75 |
| Embodiment 6 | -31.93 | -29.05 | 2.88 |
| Embodiment 7 | -34.41 | -32.57 | 1.84 |
(annotate: bubble point temperature in the table and dew-point temperature all are the temperature of saturation when standard atmospheric pressure 101.325kPa)
As can be seen from Table 1, the temperature glide of all embodiment is all little, and maximum is no more than 3.0 ℃, all belongs near azeotropic mixed refrigerant.
B. environmental performance
Table 2 has compared the environmental performance of the foregoing description and HFC-134a.Wherein as benchmark value 1.0, the GWP value is with CO with CFC-11 for the ODP value
2As benchmark value 1.0 (100 years).
Table 2 environmental performance relatively
| Refrigeration agent | ODP | GWP |
| Embodiment 1 | 0 | 139 |
| Embodiment 2 | 0 | 11 |
| Embodiment 3 | 0 | 134 |
| Embodiment 4 | 0 | 101 |
| Embodiment 5 | 0 | 121 |
| Embodiment 6 | 0 | 108 |
| Embodiment 7 | 0 | 82 |
| HFC-134a | 0 | 1300 |
As can be seen from Table 2, the ozonosphere of the foregoing description consumes potential (ODP) value and is zero, and atmospheric ozone layer is not had destruction, and this point is identical with HFC-134a.
Moreover, the global warming potential of the foregoing description (GWP) value is significantly smaller than HFC-134a, and 0.85%～10.7% of HFC-134a GWP value is only arranged, and more meets current protection ozonosphere, reduces the environmental protection requirement that the Global warming effect is laid equal stress on.
C. thermal parameter and thermal performance
Table 3 has compared under cooling condition (being vaporization temperature=-23 ℃, condensing temperature=43 ℃, suction temperature=5 ℃, supercooling temperature=38 ℃), the thermal parameter of the foregoing description and HFC-134a (that is: evaporating pressure P
0, condensing pressure P
k, pressure ratio P
k/ P
0, exhaust temperature t
2) and relative thermal performance (that is: relatively COP, relative unit quality refrigerating duty q
0, relative unit volume refrigerating capacity compressor q
v, relative unit volume wasted work amount w
v).Said relative thermal performance is meant the ratio of each embodiment thermal performance and HFC-134a thermal performance.
As seen, under cooling condition, except that embodiment 2, the condensing pressure of all the other embodiment, evaporating pressure and HFC-134a are close, all are in allowed band from table 3; The pressure ratio of each embodiment all is lower than HFC-134a, can directly charge in the system of former use HFC-134a.Though the exhaust temperature of the various embodiments described above all is higher than HFC-134a, amplitude is less, all is in the allowed band; The unit mass refrigerating duty all is higher than HFC-134a, this means the filling quantity that can reduce system refrigerant; The COP value is all more than or equal to HFC-134a, and therefore, these embodiment have energy-saving effect.Except that embodiment 2, the refrigerating effect per unit swept volume of all the other embodiment and unit volume wasted work amount are all close with HFC-134a, and this shows that these embodiment can directly use the compressor of HFC-134a, and need not substantially to change.
The comparison of table 3 thermal parameter and thermal performance
Claims (4)
1, the environment friendly refrigerating fluid of a kind of alternative HFC-134a is characterized in that this refrigeration agent contains HFC-161 and two kinds of components of HFC-152a.
2, the environment friendly refrigerating fluid of alternative HFC-134a according to claim 1 is characterized in that the mass percent of described HFC-161 and HFC-152a is:
HFC-161：1％-99％
HFC-152a：1％-99％。
3, the environment friendly refrigerating fluid of a kind of alternative HFC-134a according to claim 2 is characterized in that the mass percent of described HFC-161 and HFC-152a is:
HFC-161：5％-45％
HFC-152a：55％-95％。
4, the environment friendly refrigerating fluid of a kind of alternative HFC-134a according to claim 3 is characterized in that the mass percent of described HFC-161 and HFC-152a is:
HFC-161：15％-25％
HFC-152a：75％-85％。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610049650 CN1814688A (en) | 2006-02-27 | 2006-02-27 | Environment-protection refrigrant replacing HFC-134a |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610049650 CN1814688A (en) | 2006-02-27 | 2006-02-27 | Environment-protection refrigrant replacing HFC-134a |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1814688A true CN1814688A (en) | 2006-08-09 |
Family
ID=36907048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610049650 Pending CN1814688A (en) | 2006-02-27 | 2006-02-27 | Environment-protection refrigrant replacing HFC-134a |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1814688A (en) |
-
2006
- 2006-02-27 CN CN 200610049650 patent/CN1814688A/en active Pending
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