CN104263323A - Mixed refrigerant replacing HCFC-22 as well as preparation method and application thereof - Google Patents
Mixed refrigerant replacing HCFC-22 as well as preparation method and application thereof Download PDFInfo
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- CN104263323A CN104263323A CN201410455599.8A CN201410455599A CN104263323A CN 104263323 A CN104263323 A CN 104263323A CN 201410455599 A CN201410455599 A CN 201410455599A CN 104263323 A CN104263323 A CN 104263323A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
- C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
- C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/11—Ethers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
- C09K2205/122—Halogenated hydrocarbons
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Abstract
The invention provides a mixed refrigerant replacing HCFC-22 as well as a preparation method and application thereof. Under the working condition of high temperature, the mixed refrigerant is formed by 58-95% of fluoroethane, 4-14% of difluoromethane and 1-29% of dimethyl ether by mass percent. Under the working condition of medium temperature, the mixed refrigerant is formed by 59-95% of fluoroethane, 4-14% of difluoromethane and 1-28% of dimethyl ether by mass percent. During preparation, fluoroethane, difluoromethane and dimethyl ether are mixed uniformly in a liquid state in proportion. The mixed refrigerant has the advantages that the ODP (ozone depletion potential) is equal to 0; the GWP (global warming potential) is less than 150; the evaporation pressure, the condensation pressure, the pressure ratio and the standard boiling point of the mixed refrigerant are close to the evaporation pressure, the condensation pressure, the pressure ratio and the standard boiling point of HCFC-22; the temperature glide is less than 3K; the cycle performance coefficient, the unit mass refrigerating capacity, the unit volume refrigerating capacity and the standard volume refrigerating capacity of the mixed refrigerant are better than the cycle performance coefficient, the unit mass refrigerating capacity, the unit volume refrigerating capacity and the standard volume refrigerating capacity of HCFC-22; the unit mass power consumption and the exhaust temperature of the mixed refrigerant are lower than the unit mass power consumption and the exhaust temperature of HCFC-22; the mixed refrigerant can serve as a long-term substitute of HCFC-22 and can reduce the charge and energy consumption.
Description
Technical field
The invention belongs to refrigerant art, relate to mix refrigerant of a kind of alternative HCFC-22 and its preparation method and application.
Background technology
HCFC-22 is most widely used general, the refrigeration agent that performance is more excellent of refrigeration industry now, is also used widely in various occasions such as air-conditioning, chemical industry, boats and ships.HCFC-22 chemical physics excellent property, nontoxic, do not fire, do not explode, there is good safety in utilization; Thermomechanical property is outstanding and have good mutual solubility with mineral oil, to metal and non-metallic material corrosion-free, but its exponent of adiabatic compression is 1.194, and compression final temperature is higher, and compressor under high pressure works and will take cooling provision.The ODP=0.034 of HCFC-22, GWP=1700, be discharged in air and can damage the ozone layer and cause Greenhouse effect." Montreal Protocol about ozone-layer depleting substance " specifies, HCFC-22 is the refrigeration agent that second batch will be eliminated after HCFC-12.In " Copenhagen amendment " regulation, HCFC-22 can only as transition working medium, and developed country will all eliminate HCFCs class refrigeration agent before the year two thousand twenty, and the developing countries will all forbid to the year two thousand thirty.European Union member countries announce, use all HCFCs class materials by forbidding in 2015, and China, as the big export country of air-conditioning, refrigerator, has also accelerated the alternative HCFCs refrigeration agent paces that especially HCFC-22 is alternative.
Existing simple substance refrigeration agent, its performance is not all better than HCFC-22 comprehensively, so simple substance refrigeration agent cannot as the alternative refrigerant of HCFC-22.After mutual supplement with each other's advantages principle of giving chapter and verse uses mix refrigerant to substitute the theory of HCFC-22, scientific research personnel proposes the mixture refrigerant of various ingredients and proportioning.Patent application CN102153992A the refrigeration agent of direct filling to substitute R 22 " a kind of can " discloses following component and percent mass proportioning: pentafluoride ethane, 45% ~ 52%; HFA 134a, 45% ~ 52%; Dme, 3% ~ 6%.Can realize directly charging during gained refrigerant replacement HCFC-22, and cycle performance and HCFC-22 are quite or slightly high.
" a kind of mix refrigerant " of applying for a patent publication number CN101058717A discloses by pentafluoride ethane, and 30% ~ 60%, methylene fluoride, 30% ~ 60%, Halothane, 1% ~ 10%.The mix refrigerant of this proportioning is compared with HCFC-22 has lower Greenhouse effect value and power consumption values.
" environment friendly refrigerating fluid of a kind of alternative HCFC-22 " of applying for a patent publication number CN1478849 discloses a kind of ternary mixed refrigerant, and its component and percent mass proportioning are: fluoroethane, 30% ~ 60%; Pentafluoride ethane, 25% ~ 50%; Methylene fluoride, 5% ~ 35%.Gained refrigeration agent work press and pressure ratio close with HCFC-22, as the long-term surrogate of HCFC-22, and can reduce filling quantity.
But also do not have performance to be better than the relevant report of the mix refrigerant of HCFC-22 at present, the mixed refrigerant that can substitute HCFC-22 therefore developing excellent performance is still the research emphasis of current refrigeration agent industry comprehensively.
Summary of the invention
The object of the present invention is to provide mix refrigerant of a kind of alternative HCFC-22 and its preparation method and application, this mix refrigerant can substitute HCFC-22 under worst hot case and middle temperature operating mode, its excellent property, can be used as the long-term surrogate of HCFC-22, and the filling quantity of refrigeration agent can be reduced, reduce energy consumption.
For achieving the above object, the present invention by the following technical solutions:
A mix refrigerant of alternative HCFC-22, is made up of fluoroethane, methylene fluoride, dme three kinds of components.
Under worst hot case, the mass percent of three kinds of components is:
Fluoroethane 58% ~ 95%;
Methylene fluoride 4% ~ 14%;
Dme 1% ~ 29%.
Under middle temperature operating mode, the mass percent of three kinds of components is:
Fluoroethane 59% ~ 95%;
Methylene fluoride 4% ~ 14%;
Dme 1% ~ 28%.
Under worst hot case and middle temperature operating mode, the mass percent of three kinds of components is:
Fluoroethane, 85%; Methylene fluoride, 10%; Dme, 5%.
Under worst hot case and middle temperature operating mode, the mass percent of three kinds of components is:
Fluoroethane, 80%; Methylene fluoride, 10%; Dme, 10%.
Under worst hot case, the mass percent of three kinds of components is:
Fluoroethane, 90%; Methylene fluoride, 7%; Dme, 3%.
Under middle temperature operating mode, the mass percent of three kinds of components is:
Fluoroethane, 73%; Methylene fluoride, 12%; Dme, 15%.
The preparation method of the mix refrigerant of described alternative HCFC-22, fluoroethane, methylene fluoride and dme is even according to corresponding proportioning physical mixed under liquid phase state, namely obtain the mix refrigerant of alternative HCFC-22.
The mix refrigerant of described alternative HCFC-22 is as the application of refrigeration agent substituting HCFC-22 under worst hot case and/or middle temperature operating mode.
The vaporization temperature of described worst hot case is 7 DEG C, and condensing temperature is 55 DEG C, and suction temperature is 18 DEG C, and fluid temperature is 50 DEG C; The vaporization temperature of middle temperature operating mode is-7 DEG C, and condensing temperature is 43 DEG C, and suction temperature is 18 DEG C, and fluid temperature is 38 DEG C.
Relative to prior art, the present invention has following beneficial effect:
The mix refrigerant (HFC-161/HFC-32/RE170) of alternative HCFC-22 provided by the invention is a kind of ternary mixed refrigerant, be made up of fluoroethane (HFC-161), methylene fluoride (HFC-32), dme (RE170) three kinds of components, HCFC-22 can be substituted under worst hot case and middle temperature operating mode, can be used as the long-term surrogate of HCFC-22, and the filling quantity of refrigeration agent can be reduced, reduce energy consumption.
Mix refrigerant provided by the invention, compared with HCFC-22, has the following advantages:
(1) environmental performance is good, ODP=0, GWP < 150, and environmental-protecting performance is much better than HCFC-22, and the environment protection requirement meeting current Ozonosphere protection and suppress global warming to be laid equal stress on and international standard are to the requirement of alternative refrigerant.
(2) thermal parameter is as very close with HCFC-22 in evaporating pressure, condensing pressure, pressure ratio etc., exhaust temperature is slightly lower than HCFC-22, the a little higher than HCFC-22 of normal boiling point, the temperature glide under vaporization temperature and evaporating pressure is less than 3K, belongs to near-azeotrope refrigerant.
(3) cycle performance coefficient (COP), refrigerating effect per unit swept volume, all a little higher than HCFC-22 of orthobaric volume refrigerating duty, unit mass wasted work amount is lower than HCFC-22, there is the effect reducing power consumption, unit mass refrigerating duty is more than 1.8 times of HCFC-22, the significantly reduction of filling quantity can be realized, there is very large economic benefit.
Embodiment
The mix refrigerant (HFC-161/HFC-32/RE170) of alternative HCFC-22 provided by the invention is a kind of ternary mixed refrigerant, be made up of fluoroethane (HFC-161), methylene fluoride (HFC-32), dme (RE170) three kinds of components, the mass percent substituting three kinds of components during HCFC-22 under worst hot case is: HFC-161,58% ~ 95%; HFC-32,4% ~ 14%; RE170,1% ~ 29%; The mass percent substituting three kinds of components during HCFC-22 under middle temperature operating mode is: HFC-161,59% ~ 95%; HFC-32,4% ~ 14%; RE170,1% ~ 28%.
In above-mentioned scope, under worst hot case, most preferred mass percent is:
(1)HFC-161，85％；HFC-32，10％；RE170，5％；
(2)HFC-161，80％；HFC-32，10％；RE170，10％；
(3)HFC-161，90％；HFC-32，7％；RE170，3％。
Under middle temperature operating mode, most preferred mass percent is:
(1)HFC-161，85％；HFC-32，10％；RE170，5％；
(2)HFC-161，80％；HFC-32，10％；RE170，10％；
(3)HFC-161，73％；HFC-32，12％；RE170，15％。
Fluoroethane (HFC-161), methylene fluoride (HFC-32), dme (RE170) three kinds of components are carried out physical mixed according to corresponding proportioning by the preparation method of mix refrigerant provided by the invention (HFC-161/HFC-32/RE170) under liquid phase state (normal temperature and pressure).
The operating mode calculating refrigerant replacement HCFC-22 in the present invention is worst hot case and middle temperature operating mode, and according to being JB/T 7666-1995 " refrigeration and conditioning unit nominal condition general provision ", its design parameter is as shown in table 1.
The loop parameter of table 1 worst hot case and middle temperature operating mode
Table 2 provides the basic physical properties character of three kinds of components and HCFC-22.
The basic physical properties of table 2 HFC-161, HFC-32, RE170 and HCFC-22
Provide specific embodiments of the invention below.Specific embodiment is the recommendation proportioning in the scope of the invention, instead of whole proportioning of the present invention, is not also construed as limiting scope of the present invention.All proportionings in the scope of the invention are all within claim of the present invention.
Embodiment 1:
Under worst hot case, substitute a mix refrigerant of HCFC-22, by mass percentage, be made up of following three kinds of components: fluoroethane, 85%; Methylene fluoride, 10%; Dme, 5%.
When substituting HCFC-22 under worst hot case, HFC-161, HFC-32, RE170 are carried out physical mixed by the mass percent of 85:10:5 under liquid phase, namely obtains above-mentioned mix refrigerant.
Embodiment 2:
Under worst hot case, substitute a mix refrigerant of HCFC-22, by mass percentage, be made up of following three kinds of components: fluoroethane, 80%; Methylene fluoride, 10%; Dme, 10%.
When substituting HCFC-22 under worst hot case, HFC-161, HFC-32, RE170 are carried out physical mixed by the mass percent of 80:10:10 under liquid phase, namely obtains above-mentioned mix refrigerant.
Embodiment 3:
Under worst hot case, substitute a mix refrigerant of HCFC-22, by mass percentage, be made up of following three kinds of components: fluoroethane, 90%; Methylene fluoride, 7%; Dme, 3%.
When substituting HCFC-22 under worst hot case, HFC-161, HFC-32, RE170 are carried out physical mixed by the mass percent of 90:7:3 under liquid phase, namely obtains above-mentioned mix refrigerant.
Embodiment 4:
Under middle temperature operating mode, substitute a mix refrigerant of HCFC-22, by mass percentage, be made up of following three kinds of components: fluoroethane, 85%; Methylene fluoride, 10%; Dme, 5%.
When substituting HCFC-22 under middle temperature operating mode, HFC-161, HFC-32, RE170 are carried out physical mixed by the mass percent of 85:10:5 under liquid phase, namely obtains above-mentioned mix refrigerant.
Embodiment 5:
Under middle temperature operating mode, substitute a mix refrigerant of HCFC-22, by mass percentage, be made up of following three kinds of components: fluoroethane, 80%; Methylene fluoride, 10%; Dme, 10%.
When substituting HCFC-22 under middle temperature operating mode, HFC-161, HFC-32, RE170 are carried out physical mixed by the mass percent of 80:10:10 under liquid phase, namely obtains above-mentioned mix refrigerant.
Embodiment 6:
Under middle temperature operating mode, substitute a mix refrigerant of HCFC-22, by mass percentage, be made up of following three kinds of components: fluoroethane, 73%; Methylene fluoride, 12%; Dme, 15%.
When substituting HCFC-22 under middle temperature operating mode, HFC-161, HFC-32, RE170 are carried out physical mixed by the mass percent of 73:12:15 under liquid phase, namely obtains above-mentioned mix refrigerant.
Embodiment 7:
Under worst hot case and middle temperature operating mode, substitute a mix refrigerant of HCFC-22, by mass percentage, be made up of following three kinds of components: fluoroethane,
Under worst hot case and middle temperature operating mode, substitute a mix refrigerant of HCFC-22, by mass percentage, be made up of following three kinds of components: fluoroethane, 66%; Methylene fluoride, 14%; Dme, 20%.
When substituting HCFC-22 under worst hot case and middle temperature operating mode, HFC-161, HFC-32, RE170 are carried out physical mixed by the mass percent of 66:14:20 under liquid phase, namely obtains above-mentioned mix refrigerant.
Loop parameter according to worst hot case and middle temperature operating mode carries out cycle calculations, the calculation result of the mix refrigerant of embodiment 1-6 and HCFC-22 is contrasted and lists in table 3.
The mix refrigerant performance of table 3 embodiment 1-6 and comparing of HCFC-22
Annotation: band * item is the correlative value with HCFC-22.
From table 3, the environmental performance of mix refrigerant of the present invention is good, ODP=0, and GWP value is less than 150, far below the GWP value of HCFC-22, and the environmental requirement meeting current Ozonosphere protection and suppress global warming to be laid equal stress on.The evaporating pressure, condensing pressure, pressure ratio etc. of this mix refrigerant are very close with HCFC-22, and exhaust temperature is slightly lower than HCFC-22, and a little higher than HCFC-22 of normal boiling point, the temperature glide under vaporization temperature and evaporating pressure is less than 3K.Unit mass wasted work amount is lower than HCFC-22, and all a little higher than HCFC-22 of cycle performance coefficient (COP), refrigerating effect per unit swept volume, orthobaric volume refrigerating duty, unit mass refrigerating duty is more than 1.8 times of HCFC-22.
Mix refrigerant of the present invention can realize direct filling to substitute, can substitute HCFC-22 under worst hot case and middle temperature operating mode, as the long-term surrogate of HCFC-22, and can have the advantage reducing power consumption, reduce filling quantity of refrigerant.
Claims (10)
1. a mix refrigerant of alternative HCFC-22, is characterized in that: be made up of fluoroethane, methylene fluoride, dme three kinds of components.
2. the mix refrigerant of alternative HCFC-22 according to claim 1, is characterized in that: under worst hot case, the mass percent of three kinds of components is:
Fluoroethane 58% ~ 95%;
Methylene fluoride 4% ~ 14%;
Dme 1% ~ 29%.
3. the mix refrigerant of alternative HCFC-22 according to claim 1, is characterized in that: under middle temperature operating mode, the mass percent of three kinds of components is:
Fluoroethane 59% ~ 95%;
Methylene fluoride 4% ~ 14%;
Dme 1% ~ 28%.
4. the mix refrigerant of alternative HCFC-22 according to claim 1, is characterized in that: under worst hot case and middle temperature operating mode, the mass percent of three kinds of components is:
Fluoroethane, 85%; Methylene fluoride, 10%; Dme, 5%.
5. the mix refrigerant of alternative HCFC-22 according to claim 1, is characterized in that: under worst hot case and middle temperature operating mode, the mass percent of three kinds of components is:
Fluoroethane, 80%; Methylene fluoride, 10%; Dme, 10%.
6. the mix refrigerant of alternative HCFC-22 according to claim 1 and 2, is characterized in that: under worst hot case, the mass percent of three kinds of components is:
Fluoroethane, 90%; Methylene fluoride, 7%; Dme, 3%.
7. the mix refrigerant of the alternative HCFC-22 according to claim 1 or 3, is characterized in that: under middle temperature operating mode, the mass percent of three kinds of components is:
Fluoroethane, 73%; Methylene fluoride, 12%; Dme, 15%.
8. the preparation method of the mix refrigerant of the alternative HCFC-22 in claim 1-7 described in any one, it is characterized in that: fluoroethane, methylene fluoride and dme is even according to corresponding proportioning physical mixed under liquid phase state, namely obtain the mix refrigerant of alternative HCFC-22.
9. the mix refrigerant of the alternative HCFC-22 in claim 1-7 described in any one is as the application of refrigeration agent substituting HCFC-22 under worst hot case and/or middle temperature operating mode.
10. apply as claimed in claim 9, it is characterized in that: the vaporization temperature of described worst hot case is 7 DEG C, and condensing temperature is 55 DEG C, and suction temperature is 18 DEG C, and fluid temperature is 50 DEG C; The vaporization temperature of middle temperature operating mode is-7 DEG C, and condensing temperature is 43 DEG C, and suction temperature is 18 DEG C, and fluid temperature is 38 DEG C.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114181664A (en) * | 2021-12-09 | 2022-03-15 | 珠海格力电器股份有限公司 | Environment-friendly mixed refrigeration working medium, refrigerant and refrigeration system |
| CN114276784A (en) * | 2021-12-22 | 2022-04-05 | 江苏华复保利环保科技有限公司 | Ternary mixed refrigerant for vehicle, preparation method thereof and refrigeration equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114181664A (en) * | 2021-12-09 | 2022-03-15 | 珠海格力电器股份有限公司 | Environment-friendly mixed refrigeration working medium, refrigerant and refrigeration system |
| CN114181664B (en) * | 2021-12-09 | 2022-09-23 | 珠海格力电器股份有限公司 | Environment-friendly mixed refrigeration working medium, refrigerant and refrigeration system |
| CN114276784A (en) * | 2021-12-22 | 2022-04-05 | 江苏华复保利环保科技有限公司 | Ternary mixed refrigerant for vehicle, preparation method thereof and refrigeration equipment |
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