CN105985754A - High-effective environment-friendly mixed working medium used for low-temperature heat pump - Google Patents
High-effective environment-friendly mixed working medium used for low-temperature heat pump Download PDFInfo
- Publication number
- CN105985754A CN105985754A CN201510001464.9A CN201510001464A CN105985754A CN 105985754 A CN105985754 A CN 105985754A CN 201510001464 A CN201510001464 A CN 201510001464A CN 105985754 A CN105985754 A CN 105985754A
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- CN
- China
- Prior art keywords
- working medium
- mixed working
- r227ea
- working fluid
- heat pump
- Prior art date
- 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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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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
-
- 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
-
- 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
- C09K2205/22—All components of a mixture being fluoro compounds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Lubricants (AREA)
Abstract
The invention provides a high-effective environment-friendly mixed working medium group used for a low-temperature heat pump. The working medium group is composed of two working medium pairs, one is R134a-tetrafluoroethane (CH2FCF3) and the other is R227ea-heptafluoropropane (CF3-CHF-CF3). The mass fraction ratio of the R134a to the R227ea in the mixed working medium is 85-95% : 15-5%. The working medium group is 0 in ozone damping depletion potential (ODP), is 1375 in global warming potential (GWP), and satisfies the new demand tendency in environment protection of protecting atmospheric ozone layer and reducing global greenhouse effect at present.
Description
Technical field
The invention belongs to the cold-producing medium in heat pump or refrigeration, air conditioning system, be particularly suitable as the refrigeration working medium in the hot pump in low temp system that condensation temperature is 30-100 DEG C.
Background technology
R134a (tetrafluoroethane, CH2FCF3) relative molecular mass is 102.03, and boiling point is-26.07 DEG C, gasification latent heat is 216 J/g (O.101 3 MPa), critical temperature is 101.06 DEG C, and critical pressure is 4.059 MPa, and critical density is 512 kg/m3；Environmental performance is superior: its ODP (ODP) is 0, and global warming potential (GWP) is 1300；The toxicity of R134a is the lowest, the most non-combustible, and security class is A1, is the safest cold-producing medium.Its shortcoming is: the chemical stability of R134a is fine, solubization yet with it is higher than R22, so it is unfavorable to refrigeration system, even if with the presence of a small amount of moisture, under the effect of lubricating oil etc., it will produce acid, carbon dioxide or carbon monoxide, metal will be produced corrosiveness, or produce " copper facing " effect, so R134a system is dried and cleans require higher.R134a finds no the phenomenon of mutual chemical reaction to metals such as steel, ferrum, copper, aluminum, only has slight effect to zinc.
R227ea (heptafluoro-propane, CF3-CHF-CF3) relative molecular mass is 170.03, and boiling point is-16.45 DEG C, and gasification latent heat is less, it is 136 J/g (O.101 3 MPa), critical temperature is 101.65 DEG C, and critical pressure is 2.926 MPa, and critical density is 573 g/m3, when 20 DEG C, saturated vapor pressure is 0.389 MPa, there is good heat stability and chemical stability, nontoxic do not fire, non-corrosiveness；Environmental performance is superior: its ODP value is 0, and GWP value is 2050, and reserve life is short in an atmosphere；R227ea is a kind of good fire retardant, and its combustion property that presses down is better than R125.
Air source heat pump technology is as a focus of heating equipment industry at present, and various product emerges in an endless stream.The a few years time, China's air-conditioning market there is domestic and international enterprise of hundreds of family add among the sale of air source heat pump production.But limited to by the heating capacity of working medium own, air source heat pump is when ambient temperature reaches-20 DEG C, reach the leaving water temperature of 55 DEG C, refrigerant condensing temperature is at about 60 DEG C, so compression ratio has exceeded the tolerance range of compressor, causing compressor electric motor to be closed, whole hot pump in low temp system quits work.If can develop can heating capacity is the biggest at-20 DEG C cold-producing medium, China's air source heat pump will be advanced in the development progress of northern area.
Summary of the invention
It is an object of the invention to provide one group of efficient and environment-friendly type mixed working fluid being suitable for hot pump in low temp unit; it is 0 to ozone damped expoential (ODP) value; it is 1375 to causing the greenhouse effect extent of injury (GWP) value, meets the environmental requirement new trend currently protected atmospheric ozone layer, reduce Global Greenhouse Effect.
Present invention is introduced: one group of hot pump in low temp efficient and environment-friendly type mixed working fluid, containing R134a tetrafluoroethane (CH2FCF3) and two kinds of constituent element materials of R227ea heptafluoro-propane (CF3-CHF-CF3), it is characterized in that: in mixed working fluid, the mass fraction ratio of R134a with R227ea is 85～95%:15～5%.
The preparation method of mixed working fluid of the present invention is, by its quality proportioning specified, each constituent element material is carried out physical mixed at normal temperatures.
The present invention has the following advantages and beneficial effect:
(1) environmental requirement is met: the ODP of the present invention is equal to zero, and GWP value is 1375.Its environmental characteristics is excellent, meets Ozonosphere protection, the requirement of minimizing greenhouse effect.(2) thermal parameter is suitable: in hot pump in low temp unit, be suitable for condensation temperature 30-100 DEG C, can produce 55 DEG C of hot water.
The basic parameter of each constituent element is shown in Table 1.
The table 1 hot pump in low temp basic parameter of constituent element contained in efficient and environment-friendly type mixed working fluid
Accompanying drawing explanation
The present invention is further described below in conjunction with the accompanying drawings:
Accompanying drawing 1 is the T-S figure of mix refrigerant under saturation of the present invention.
Accompanying drawing 2,3 is each thermal physical property parameter value of mix refrigerant under saturation of the present invention.
Detailed description of the invention
The present invention is further illustrated for the following examples.
Embodiment: take 90mass%R134a tetrafluoroethane (CH2FCF3), 10mass%R227ea heptafluoro-propane (CF3-CHF-CF3), is carried out after physical mixed at normal temperatures as cold-producing medium.
Each thermal physical property parameter value of the embodiment of the present invention is as shown in accompanying drawing 1.
Claims (2)
1. one group of hot pump in low temp efficient and environment-friendly type mixed working fluid, is characterized in that: containing R134a tetrafluoroethane (CH2FCF3) and two kinds of constituent element materials of R227ea heptafluoro-propane (CF3-CHF-CF3).
2. according to one group of hot pump in low temp mixed working fluid described in claim 1, it is characterized in that: in mixed working fluid, the mass fraction ratio of R134a with R227ea is 85～95%:15～5%；The ODP value of this group mixed working fluid is 0, and GWP value is 1375, meets the environmental requirement new trend currently protected atmospheric ozone layer, reduce Global Greenhouse Effect.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510001464.9A CN105985754A (en) | 2015-03-02 | 2015-03-02 | High-effective environment-friendly mixed working medium used for low-temperature heat pump |
| GB1505844.9A GB2547178B (en) | 2015-03-02 | 2015-04-07 | Highly efficient and environmental friendly mixed refrigerant for low temperature heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510001464.9A CN105985754A (en) | 2015-03-02 | 2015-03-02 | High-effective environment-friendly mixed working medium used for low-temperature heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105985754A true CN105985754A (en) | 2016-10-05 |
Family
ID=57042621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510001464.9A Pending CN105985754A (en) | 2015-03-02 | 2015-03-02 | High-effective environment-friendly mixed working medium used for low-temperature heat pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105985754A (en) |
| GB (1) | GB2547178B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083508A (en) * | 1992-06-25 | 1994-03-09 | 大湖化学公司 | Contain 1,1,1,2,3,3,3, the refrigerant mixture of-heptafluoro-propane |
| US5766511A (en) * | 1995-12-14 | 1998-06-16 | Ausimont S.P.A. | Near-azeotropic compositions constituted by hydrogenated fluorocarbons and hydrocarbons, suitable as propellant fluids for aerosol |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123618C (en) * | 2000-07-28 | 2003-10-08 | 清华大学 | Refrigerant |
| BRPI0719479B8 (en) * | 2006-12-23 | 2017-06-27 | Du Pont | heat transfer system, refrigerator, cold room, cooler, product display, freezer, air conditioning equipment, method for retrofitting a heat transfer system and cooling or air conditioning system |
| US8333901B2 (en) * | 2007-10-12 | 2012-12-18 | Mexichem Amanco Holding S.A. De C.V. | Heat transfer compositions |
| WO2009047535A2 (en) * | 2007-10-12 | 2009-04-16 | Ineos Fluor Holdings Limited | Heat transfer compositions |
| CN102746825A (en) * | 2012-06-27 | 2012-10-24 | 西安交通大学 | Fluoroethane-containing mixed working medium |
-
2015
- 2015-03-02 CN CN201510001464.9A patent/CN105985754A/en active Pending
- 2015-04-07 GB GB1505844.9A patent/GB2547178B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083508A (en) * | 1992-06-25 | 1994-03-09 | 大湖化学公司 | Contain 1,1,1,2,3,3,3, the refrigerant mixture of-heptafluoro-propane |
| US5766511A (en) * | 1995-12-14 | 1998-06-16 | Ausimont S.P.A. | Near-azeotropic compositions constituted by hydrogenated fluorocarbons and hydrocarbons, suitable as propellant fluids for aerosol |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2547178B (en) | 2021-11-03 |
| GB2547178A (en) | 2017-08-16 |
| GB201505844D0 (en) | 2015-05-20 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161005 |
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| WD01 | Invention patent application deemed withdrawn after publication |