CN102757765A - Novel environment-friendly refrigerant - Google Patents
Novel environment-friendly refrigerant Download PDFInfo
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- CN102757765A CN102757765A CN2011101158381A CN201110115838A CN102757765A CN 102757765 A CN102757765 A CN 102757765A CN 2011101158381 A CN2011101158381 A CN 2011101158381A CN 201110115838 A CN201110115838 A CN 201110115838A CN 102757765 A CN102757765 A CN 102757765A
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- thtp
- methylene fluoride
- tht
- mass percent
- novel environment
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- 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.)
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 52
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 claims abstract description 136
- 238000005057 refrigeration Methods 0.000 claims abstract description 38
- 239000003795 chemical substances by application Substances 0.000 claims description 33
- 239000000523 sample Substances 0.000 claims description 2
- 238000004378 air conditioning Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 2
- RAOIDOHSFRTOEL-UHFFFAOYSA-N tetrahydrothiophene Chemical compound C1CCSC1 RAOIDOHSFRTOEL-UHFFFAOYSA-N 0.000 abstract 3
- 239000002360 explosive Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- UJPMYEOUBPIPHQ-UHFFFAOYSA-N 1,1,1-trifluoroethane Chemical compound CC(F)(F)F UJPMYEOUBPIPHQ-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000008786 sensory perception of smell Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention provides a novel environment-friendly refrigerant which comprises difluoromethane R32 and tetrahydrothiophene THT, wherein the mass percent of difluoromethane is 95-99.7%, and the mass percent of tetrahydrothiophene is 0.3-5%. The novel environment-friendly refrigerant has refrigeration efficiency almost the same as that of R22, does not damage the ozone layer and has low greenhouse effect index. When the air conditioning system adopting the refrigerant leaks, a user can sense the leakage in the first time, so that the user can take measures in time to protect the property safety of people.
Description
Technical field
The present invention relates to a kind of refrigeration agent, relate in particular to a kind of environmental protection refrigerant that can substitute R22.
Background technology
Because freonll-11 class (like the R22 that use in a large number now) refrigeration agent has destruction and has stronger Greenhouse effect atmospheric ozone layer; Belong to the refrigeration agent that need be replaced; And methylene fluoride R32 neither can destroy atmospheric ozone layer; The Global warming index is also lower, belongs to environmentally friendly refrigeration agent.But R32 belong to flammable can quick-fried type refrigeration agent, when refrigeration agent taking place leak, might catch fire or explosive incident; So need add vigilance gas for this refrigeration agent, when conditioner generation refrigeration agent leaks, the user is in time perceived; To take appropriate measures; Can also further add other materials, can obtain the novel refrigerant of higher Lower Explosive Limit, reduce the danger of blasting when leaking.
Retrieval through to existing document finds that the Chinese patent publication number is the patent of invention of CN1740262, and it provides a kind of refrigeration agent to comprise the refrigeration agent of propane R290, Trimethylmethane R600a, three kinds of components of THTP THT, and wherein THTP THT has stink.But because its character of Trimethylmethane R600a is not suitable in the air conditioner refrigerating circulation, using; Use the refrigeration agent that the patent of looking into provides; Its refrigeration is lower; And THTP THT is slightly soluble in Trimethylmethane R600a, in case the spillage that makes THTP when take place leaking still less, very likely can't play caution user's effect because spillage is not enough.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of novel environment-friendly refrigerant, can when conditioner generation refrigeration agent leaks, the user can in time be smelt through sense of smell.
The invention provides a kind of novel environment-friendly refrigerant; Comprise methylene fluoride and THTP; Wherein the mass percent of methylene fluoride is 95～99.7%; The mass percent of THTP is 0.3～5%, in the refrigeration agent of this ratio proportioning, can when taking place to leak, make the user can smell smell at once.
Further, the mass percent of methylene fluoride is 96～99.7%, and the mass percent of THTP is 0.3～5%.
Further, the mass percent of methylene fluoride is 97～99.7%, and the mass percent of THTP is 0.3～3%.
Further, the mass percent of methylene fluoride is 98～99.7%, and the mass percent of THTP is 0.3～2%.
Further, the mass percent of methylene fluoride is 99～99.7%, and the mass percent of THTP is 0.3～1%.
Further, the mass percent of methylene fluoride is 99.4～99.6%, and the mass percent of THTP is 0.4～0.6%.
Further, the mass percent of methylene fluoride is 99.5%, and the mass percent of THTP is 0.5%.
Further, this novel refrigerant also comprises wherein one or more the combination of R22, R125, R143, R245eb except methylene fluoride and THTP
Further, this novel refrigerant comprises methylene fluoride, R22, THTP, and wherein the mass percent of methylene fluoride is 95～97.2%, and the mass percent of R22 is 2.5～4.7%, and the mass percent of THTP is 0.3～0.7%.
Further, this novel refrigerant comprises methylene fluoride, R125, THTP, and wherein the mass percent of methylene fluoride is 95～97.2%, and the mass percent of R125 is 2.5～4.7%, and the mass percent of THTP is 0.3～0.7%.。
Further, this novel refrigerant comprises methylene fluoride, R143, THTP, and wherein the mass percent of methylene fluoride is 95～97.2%, and the mass percent of R143 is 2.5～4.7%, and the mass percent of THTP is 0.3～0.7%.
Further, this novel refrigerant comprises methylene fluoride, R245eb, THTP, and wherein the mass percent of methylene fluoride is 95～97.2%, and the mass percent of R245eb is 2.5～4.7%, and the mass percent of THTP is 0.3～0.7%.。
Simultaneously, the present invention also provides a kind of conditioner, has used the refrigeration agent in aforementioned any ratio preparation.
Further, conditioner also comprises the methylene fluoride detector, and the probe of methylene fluoride detector is arranged at the air conditioner wind outlet place, and the control part of methylene fluoride detector is integrated in the unit of said conditioner.
At novel environment-friendly refrigerant according to the present invention, can be applied in the air-conditioning system and play good effect, when conditioner generation refrigeration agent leaks; Because THTP THT has strong unhappy smell; The user can perceive refrigeration agent in the very first time and leak, and takes appropriate measures, as the ventilation of windowing; Close burning things which may cause a fire disaster etc., thus protection people property safety.
Embodiment
Embodiment one:
First embodiment of the present invention, the refrigeration agent that provides is made up of the methylene fluoride R32 of 99.5% mass percent and 0.5% THTP THT.
Before the proportioning of carrying out refrigeration agent; The boiling characteristics of the GPRS THTP THT of elder generation; Be under 20 ℃ the enclosed environment in temperature, the THT that gets 1g, 2g respectively with injector for medical purpose drops in and observes the volatilization situation on the horminess metal plate, and the record experiment conclusion; The THTP of 1g time spent of volatilizing fully is 10 minutes, and the THTP of 2g time spent of volatilizing fully is 46 minutes.
At first in vacuum tank, charge into the R32 of 199g, re-use injector for medical purpose charges into 1g in jar THTP, wait for that nature mixed more than 30 minutes, opening bottleneck can smell an offensive odor, and proves thorough mixing.
Adopt same type again, in air-conditioning system, charge into this novel refrigerant, and compare with traditional R22, concrete numerical tabular is following:
| The refrigeration agent kind | R22 | Embodiment 1 |
| Test duration | 8 hours | 8 hours |
| Envrionment temperature | 25.4℃ | 26.5℃ |
| The compressor air suction temperature | 8.1℃ | 8.0℃ |
| Refrigerating duty | 3562W | 3783W |
| COP | 2.84 | 2.95 |
[0026]The working medium that present embodiment 1 is adopted is that the THTP of 99.5% methylene fluoride and 0.5% is formulated.
Visible by last table, the refrigeration agent of employing present embodiment 1, the refrigerating efficiency of its air-conditioning is better than R22.
Move after 8 hours, open the breach of 0.5mm length at the bending part of indoor evaporator, human body is apart from air outlet 1.5m; 3m, the position of 5m is carried out the perception experiment respectively, the record experimental result; Human body all can obviously be experienced strong stink in the scope of 5m, prove that novel refrigerant is in service at conditioner, in case leak; THTP THT portioning wherein still can in time be discharged in the air with refrigeration agent.
Embodiment two:
The novel refrigerant that the second embodiment of the present invention provides, formulated by the THTP of the methylene fluoride of 95% mass percent and 5%.
Adopt the novel refrigerant of second embodiment of the invention, its refrigeration capacity has decline slightly, and it leaks experiment still can smell strong stink.
Embodiment three:
The third embodiment of the present invention provides a kind of novel refrigerant, and methylene fluoride by 99.7% and the configuration of 0.3% THTP form.
Adopt the novel refrigerant of third embodiment of the invention, its refrigeration capacity and first embodiment are quite very few, but in leaking experiment, 5m place human body only can be experienced lighter stink.
Embodiment four:
The 4th embodiment of the present invention, the refrigeration agent that provides is made up of the methylene fluoride R32 of 95.6% mass percent, 3.9% R22 and 0.5% THTP THT.R22 is non-flammable, and at present the R22 refrigeration agent has been widely used in the refrigeration industry such as air-conditioning.
Get a vacuum tank, successively charge into the methylene fluoride of 191.2g successively, the THTP of 1g, the R22 of 7.8g.Wherein THTP normal temperature for liquid, can adopt injector for medical purpose that THTP is charged to vacuum tank down.Charge into and treat more than 1 hour after finishing, can fully volatilize to guarantee THTP.Can if can smell strong stink, prove THTP fully volatilization through opening the material after valve is emitted mixed with little amount.
Test is according to the Lower Explosive Limit of the novel refrigerant of aforementioned proportion configuration, and its Lower Explosive Limit reaches 18%, and the Lower Explosive Limit 14% of purer R32 wants high, thereby has reduced potential safety hazard.
The novel refrigerant that adopts embodiment four is applied in the special-purpose air-conditioning system of former R32; And the system pressure of R22 is lower; Just a small amount of the adding; Do not influence the stability of air-conditioning system, conditioner steady running, so the novel refrigerant that adopts embodiment four on the system zero parts can with the intercommunication of R32 system.
Move after 8 hours, open the breach of 0.5mm length at the bending part of indoor evaporator, human body is apart from air outlet 1.5m; 3m, the position of 5m is carried out the perception experiment respectively, the record experimental result; Human body all can obviously be experienced strong stink in the scope of 5m, prove that novel refrigerant is in service at conditioner, in case leak; THTP THT portioning wherein still can in time be discharged in the air with refrigeration agent.
Embodiment five:
The fifth embodiment of the present invention provides a kind of novel refrigerant, and the methylene fluoride by 95%, 4.5% R125,0.5% THTP configuration form.Collocation method is identical with embodiment four described methods.Pentafluoride ethane R125 itself has flame retardant resistance, and can coexist with R32 is stable.
Adopt the novel refrigerant of nineth embodiment of the invention, its Lower Explosive Limit is 34%, is significantly improved than R32, and tests with embodiment four identical leakages according to it, and 5m place human body still can be experienced strong stink.
Embodiment six:
The sixth embodiment of the present invention provides a kind of novel refrigerant, and the methylene fluoride by 95%, 4.5% R143,0.5% THTP configuration form.Collocation method is identical with embodiment four described methods.HFC-143a R143 itself has flame retardant resistance, and can coexist with R32 is stable.
The conditioner of the novel refrigerant that application implementation example six provides, its system's evaporating pressure is 483kpa, and condensing pressure is 1180kpa, and compressor exhaust temperature is 116 ℃, and system COP reaches 4.8, and air-conditioning system is stable, and is functional.
Adopt the novel refrigerant of sixth embodiment of the invention, its Lower Explosive Limit is 41%, is significantly improved than R32, and tests with embodiment four identical leakages according to it, and 5m place human body still can be experienced strong stink.
Embodiment seven:
The seventh embodiment of the present invention provides a kind of novel refrigerant, and the methylene fluoride by 95%, 4.5% R245eb, 0.5% THTP configuration form.Collocation method is identical with embodiment four described methods.Pentafluoropropane R245eb itself has flame retardant resistance, and can coexist with R32 is stable.
The conditioner of the novel refrigerant that application implementation example seven provides, its system's evaporating pressure is 552kpa, and condensing pressure is 1831kpa, and compressor exhaust temperature is 154 ℃, and system COP reaches 3.32, and air-conditioning system is stable, and is functional.
Adopt the novel refrigerant of seventh embodiment of the invention, its Lower Explosive Limit is 31%, is significantly improved than R32, and tests with embodiment four identical leakages according to it, and 5m place human body still can be experienced strong stink.
Embodiment eight:
The eighth embodiment of the present invention provides a kind of novel refrigerant, and the methylene fluoride by 95%, 2.5% R125,2% R143 and 0.5% THTP configuration form.Collocation method charges into the 190g methylene fluoride successively for getting vacuum tank, 1g THTP, 5gR125,4gR143; Wherein THTP normal temperature is down for liquid; Can adopt injector for medical purpose that it is charged in the vacuum tank, treat more than 1 hour after, charge into R125 and R143 more successively.
Adopt the novel refrigerant of eighth embodiment of the invention, its Lower Explosive Limit is 37%, is significantly improved than R32, and tests with embodiment four identical leakages according to it, and 5m place human body still can be experienced strong stink.
Embodiment nine:
Conditioner in embodiment one to nine; All can be on conditioner methylene fluoride detector of peripheral hardware again; The detecting head of methylene fluoride detector is arranged on the air outlet place of conditioner, and the sequence of control of methylene fluoride detector is integrated on the mainboard of principal controller of conditioner, when refrigeration agent takes place to leak; The methylene fluoride detector can be found out when methylene fluoride reaches the concentration of the utmost point under the blast, promptly through unit generation alarm sound.So, under the situation about being arranged for the room branch, the user does not smell conditioner in a certain room when taking place to leak, and can remind user's conditioner generation leakage failure through the chimes of doom of conditioner self.
More than though the preferred embodiments of the present invention are disclosed for purposes of illustration, it will be understood by those skilled in the art that under the prerequisite that does not deviate from disclosed scope of the present invention of accompanying claims and spirit various modifications, to increase and replace all be feasible.
Claims (19)
1. a novel environment-friendly refrigerant is characterized in that, comprises methylene fluoride R32, THTP THT, and its component concentration (mass percent) is respectively:
Methylene fluoride R32:95.0～99.7%
THTP THT:0.3～5.0%
2. novel environment-friendly refrigerant as claimed in claim 1 is characterized in that, the component concentration of said refrigeration agent (mass percent) is respectively:
Methylene fluoride R32:96.0～99.7%
THTP THT:0.3～4.0%
3. novel environment-friendly refrigerant as claimed in claim 1 is characterized in that, the component concentration of said refrigeration agent (mass percent) is respectively:
Methylene fluoride R32:97.0～99.7%
THTP THT:0.3～3.0%
4. novel environment-friendly refrigerant as claimed in claim 1 is characterized in that, the component concentration of said refrigeration agent (mass percent) is respectively:
Methylene fluoride R32:98.0～99.7%
THTP THT:0.3～2.0%
5. novel environment-friendly refrigerant as claimed in claim 1 is characterized in that, the component concentration of said refrigeration agent (mass percent) is respectively:
Methylene fluoride R32:99.0～99.7%
THTP THT:0.3～1.0%
6. novel environment-friendly refrigerant as claimed in claim 1 is characterized in that, the component concentration of said refrigeration agent (mass percent) is respectively:
Methylene fluoride R32:99.4～99.6%
THTP THT:0.4～0.6%
7. novel environment-friendly refrigerant as claimed in claim 1 is characterized in that, the component concentration of said refrigeration agent (mass percent) is respectively:
Methylene fluoride R32:99.5%
THTP THT:0.5%
8. novel environment-friendly refrigerant as claimed in claim 1 is characterized in that, said refrigeration agent also comprises wherein one or more the combination of R22, R125, R143, R245eb.
9. novel environment-friendly refrigerant as claimed in claim 8 is characterized in that, comprises methylene fluoride R32, R22, THTP THT, and its component concentration (mass percent) is respectively:
Methylene fluoride R32:95.0～97.2%
R22： 2.5～4.7％
THTP THT:0.3～0.7%
10. novel environment-friendly refrigerant as claimed in claim 8 is characterized in that, comprises methylene fluoride R32, R22, THTP THT, and its component concentration (mass percent) is respectively:
Methylene fluoride R32:95%
R22： 4.5％
THTP THT:0.5%
11. novel environment-friendly refrigerant as claimed in claim 8 is characterized in that, comprises methylene fluoride R32, R125, THTP THT, its component concentration (mass percent) is respectively:
Methylene fluoride R32:95.0～97.2%
R125： 2.5～4.7％
THTP THT:0.3～0.7%
12. novel environment-friendly refrigerant as claimed in claim 11 is characterized in that, comprises methylene fluoride R32, R125, THTP THT, its component concentration (mass percent) is respectively:
Methylene fluoride R32:95%
R125： 4.5％
THTP THT:0.5%
13. novel environment-friendly refrigerant as claimed in claim 8 is characterized in that, comprises methylene fluoride R32, R143, THTP THT, its component concentration (mass percent) is respectively:
Methylene fluoride R32:95.0～97.2%
R143： 2.5～4.7％
THTP THT:0.3～0.7%
14. novel environment-friendly refrigerant as claimed in claim 13 is characterized in that, comprises methylene fluoride R32, R143, THTP THT, its component concentration (mass percent) is respectively:
Methylene fluoride R32:95%
R143： 4.5％
THTP THT:0.5%
15. novel environment-friendly refrigerant as claimed in claim 8 is characterized in that, comprises methylene fluoride R32, R245eb, THTP THT, its component concentration (mass percent) is respectively:
Methylene fluoride R32:95.0～97.2%
R245eb： 2.5～4.7％
THTP THT:0.3～0.7%
16. novel environment-friendly refrigerant as claimed in claim 15 is characterized in that, comprises methylene fluoride R32, R245eb, THTP THT, its component concentration (mass percent) is respectively:
Methylene fluoride R32:95.0%
R245eb： 4.5％
THTP THT:0.5%
17. novel environment-friendly refrigerant as claimed in claim 8 is characterized in that, comprises methylene fluoride R32, R125, R143, THTP THT, its component concentration (mass percent) is respectively:
Methylene fluoride R32:95.0%
R125： 2.5％
R143： 2％
THTP THT:0.5%
18. a conditioner is characterized in that, said conditioner is used like each described refrigeration agent of claim 1 to 17.
19. conditioner as claimed in claim 18; It is characterized in that; Said conditioner also comprises the methylene fluoride detector, and the probe of the said third methylene fluoride detector is arranged at the air conditioner wind outlet place, and the control part of said methylene fluoride detector is integrated in the unit of said conditioner.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101158381A CN102757765A (en) | 2011-04-27 | 2011-04-27 | Novel environment-friendly refrigerant |
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|---|---|---|---|
| CN2011101158381A CN102757765A (en) | 2011-04-27 | 2011-04-27 | Novel environment-friendly refrigerant |
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| CN102757765A true CN102757765A (en) | 2012-10-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104559933A (en) * | 2013-10-20 | 2015-04-29 | 阴运和 | Environment-friendly dimethyl ether refrigerant |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1336409A (en) * | 2000-07-27 | 2002-02-20 | 三洋电机株式会社 | Refrigerant and refrigeration apparatus |
| CN1922282A (en) * | 2004-02-26 | 2007-02-28 | 纳幕尔杜邦公司 | Tracer-containing compositions |
-
2011
- 2011-04-27 CN CN2011101158381A patent/CN102757765A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1336409A (en) * | 2000-07-27 | 2002-02-20 | 三洋电机株式会社 | Refrigerant and refrigeration apparatus |
| CN1922282A (en) * | 2004-02-26 | 2007-02-28 | 纳幕尔杜邦公司 | Tracer-containing compositions |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104559933A (en) * | 2013-10-20 | 2015-04-29 | 阴运和 | Environment-friendly dimethyl ether refrigerant |
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Application publication date: 20121031 |