CN102079967A - Refrigerant special for heat pump - Google Patents
Refrigerant special for heat pump Download PDFInfo
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- CN102079967A CN102079967A CN2009102258040A CN200910225804A CN102079967A CN 102079967 A CN102079967 A CN 102079967A CN 2009102258040 A CN2009102258040 A CN 2009102258040A CN 200910225804 A CN200910225804 A CN 200910225804A CN 102079967 A CN102079967 A CN 102079967A
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- refrigerant
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- heat pump
- replaced
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Abstract
The invention researches a refrigerant which is special for a heat pump, has higher environmental performance and can replace R22 refrigerant for a long time in terms of the condition that the traditional R22 refrigerant substituent is not ideal. The environmental performance ODP (Ozone Depleting Potential) and GWP (Global Warming Potential) of the refrigerant are better than those of the R22 refrigerant, and the GWP of the refrigerant is also better than that of R407C refrigerant and R410a refrigerant; and the evaporating pressure of the refrigerant is similar to that of the R22 refrigerant, is obviously better than that of R410a refrigerant and belongs to the direct injection pressure range. In views of thermotechnical parameters, all parameters of the embodiment are basically fair to the main substituent of R22 refrigerant; accordingly, when a system is replaced, the system can be directly replaced without causing influence due to system volume, the injection amount can be completely based on the original design injection amount, but the lubricating oil is mainly replaced.
Description
Technical field
The present invention relates to a kind of refrigeration agent, relate in particular to a kind of green safety refrigeration agent that replaces R22 in the heat pump that is specifically designed to.
Prior art
At present, R22 is still very extensive as the conventional refrigeration agent use range of consumption maximum, but it can produce atmospheric ozone layer and destroy, and can cause Greenhouse effect, has therefore determined in the world for the developing country that comprises China from the year two thousand twenty forbidding R22.
Current, instead the refrigeration agent of R22 mainly contains R407c in the world, R410a.And be mix refrigerant, the R407c composition is the three component refrigeration agents that HCF-32, HCF-125 and HCF-134a mix, and R410a is the two-pack refrigeration agent that HCF-32 and HCF-125 form.But R407c owing to there is bigger temperature slippage as just a kind of transition refrigeration agent, R410a is because its higher operating pressure has proposed requirements at the higher level to complete processing, stagnation point is low, and that it is used under hot environment is limited, and the redesign of secondary parts all causes the limitation of its big area use.
Summary of the invention
The present invention is directed to all less-than-ideal situation of present R22 alternative refrigerants, it is better to have studied a kind of environmental performance that is specifically designed to heat pump, can substitute the refrigeration agent of R22 for a long time, make its basic physicals be bordering on R22, can on the basis that need not change the equipment major parts, directly replace, and have good thermal property and thermal parameter.
The object of the present invention is achieved like this, and this refrigeration agent contains HFC-32 and two kinds of refrigerant component of HFC-134a, it is characterized in that also containing HFC-125, and its each constituent mass mark is respectively:
HFC-32 25～55％
HFC-134a 10～15％
HFC-125a 40～55％
Refrigeration agent of the present invention, its preparation method are above-mentioned each component to be carried out physical mixed at normal temperatures by its corresponding mixture ratio (massfraction) get final product.HFC-32 in the said components, i.e. methylene fluoride, molecular formula is CH
2F
2, molecular weight is 52.02, and normal boiling point is-51.7 ℃, and critical temperature is 78.2 ℃, and emergent pressure is 5.8MPa.
HFC-134a, promptly 1,1,1, the 2-tetrafluoromethane, its molecular formula is CH
2FCF
3, molecular weight is 102.03, and normal boiling point is-26.1 ℃, and critical temperature is 101.1 ℃, and emergent pressure is 4.04MPa.
HFC-125, i.e. pentafluoride ethane, its molecular formula is CHF
2CF
3, molecular weight is 120, and normal boiling point is-12 ℃, and critical temperature is 122.3 ℃, and emergent pressure is 3.62MPa.
With following indefiniteness embodiment refrigeration agent of the present invention is further described, will helps the present invention and the understanding of having a few thereof, but not as a limitation of the invention.
Embodiment:
Get 43% HFC-32,7% HFC-134a, 50% HFC-125 carries out physical mixed at normal temperatures with these three kinds of components.If the design conditions of air-conditioning, heat pump are: vaporization temperature is 7.2 ℃, and condensing temperature is 54.4 ℃, and condensate depression is 8.3 ℃, 11.1 ℃ of suction temperatures, press efficient is 80%, according to calculating, the have related parameter and R22 and surrogate R407c, R410a of embodiment are compared, as follows:
The comparison of table one embodiment refrigeration agent and R22, R407c, R410a
| R22 | R407c | R410a | Embodiment | |
| ?ODP | 0.05 | 0 | 0 | 0 |
| ?GWP | 1700 | 1600 | 1900 | 866 |
| Evaporating pressure MPa | 0.62 | 0.68 | 1.04 | 0.67 |
| Condensing pressure MPa | 2.17 | 2.50 | 2.36 | 2.41 |
| Pressure ratio | 3.48 | 3.70 | 3.75 | 3.55 |
| Exhaust temperature ℃ | 97.2 | 86.7 | 91.2 | 92.0 |
| ?COP* | 1.0 | 0.91 | 0.94 | 0.92 |
| Cold * | 1.0 | 0.91 | 1.06 | 0.92 |
| Volume refrigerating capacity compressor * | 1.0 | 0.99 | 0.98 | 0.97 |
Band * item is the ratio with R22.
By table one as seen, the environmental performance ODP of present embodiment and GWP are all good than R22, and GWP is better than R407c and R410a equally; Its evaporating pressure is similar to R22 and obviously is better than R410a, belongs to directly injection pressure scope.On thermal parameter, each parameter of embodiment and the main surrogate of R22 remain basically stable, and this is when just explanation is replaced in system, can directly change and can not impact because of system volume, and can be on groundwater increment, but want the replacing of primary lubricant oil fully according to original design charging amount.
Claims (1)
1. a refrigeration agent contains methylene fluoride and 1,1,1, and two kinds of components of 2-tetrafluoromethane is characterized in that also containing pentafluoride ethane, and its each constituent mass mark is respectively:
Methylene fluoride 25～55%
1,1,1,2-tetrafluoromethane 10～15%
Pentafluoride ethane 40～55%
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102258040A CN102079967A (en) | 2009-11-26 | 2009-11-26 | Refrigerant special for heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102258040A CN102079967A (en) | 2009-11-26 | 2009-11-26 | Refrigerant special for heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102079967A true CN102079967A (en) | 2011-06-01 |
Family
ID=44086165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102258040A Pending CN102079967A (en) | 2009-11-26 | 2009-11-26 | Refrigerant special for heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102079967A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063300A (en) * | 1990-12-17 | 1992-08-05 | 纳幕尔杜邦公司 | Constant boiling compositions of fluorinated hydrocarbons |
-
2009
- 2009-11-26 CN CN2009102258040A patent/CN102079967A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063300A (en) * | 1990-12-17 | 1992-08-05 | 纳幕尔杜邦公司 | Constant boiling compositions of fluorinated hydrocarbons |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110601 |