WO1989002456A1 - Refrigerant - Google Patents
Refrigerant Download PDFInfo
- Publication number
- WO1989002456A1 WO1989002456A1 PCT/JP1988/000952 JP8800952W WO8902456A1 WO 1989002456 A1 WO1989002456 A1 WO 1989002456A1 JP 8800952 W JP8800952 W JP 8800952W WO 8902456 A1 WO8902456 A1 WO 8902456A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- refrigerant
- cfc
- weight
- performance
- coefficient
- Prior art date
Links
Classifications
-
- 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
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
- C09K2205/122—Halogenated hydrocarbons
-
- 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
Definitions
- the present invention relates to a conventional technology relating to a working fluid of a refrigerator, a so-called refrigerant, and its problems.
- chlorofluorocarbon dichlorodifluoromethane
- fluorocarbon chlorodifluoromethane
- CFC-1 143a 1, 1, 1 1 1 Trifluoretane (CFC-1 143a) is conceivable, but this has the disadvantage of a low coefficient of performance.
- the coefficient of performance is represented by the ratio of the refrigerating capacity and the compression work.
- the refrigeration capacity is the amount of heat per unit time taken by the object to be cooled
- the compression work is the work of power for operating the refrigerator per unit time, so the coefficient of performance is the efficiency of the refrigerant. Is equivalent to
- the present invention relates to a refrigerant comprising 1,1,1 trifluoroethane and chlorotetrafluoroethane or tetrafluoroethane.
- FIG. 1 and FIG. 2 are graphs showing the performance of the refrigerant of the present invention.
- the refrigerant composition of the present invention preferably comprises 90 to 5% by weight of 1,1,1 trifluoroethane and 10 to 95% by weight of chlorotetrafluoroethane or tetrafluroethane.
- the blending ratio of chlorotetrafluoromethane or tetrafluoroethane is within such a range, a large improvement in the coefficient of performance is observed as compared with the case of using chlorofluorocarbon-143a alone.
- a particularly preferable mixing range is 30 to 95% by weight of the refrigerant consisting of chlorofluorotetrafluoroethylene and chlorotetrafluoroethylene, and 70 to 5% by weight of the former, and from 143a of fluorocarbon and tetrafluoroethane.
- the former is 40 to 5% by weight and the latter is 6D to 95% by weight.
- chlorotetrafluroethane used in the present invention examples include 2-chloro-1,1,1,2-tetrafluoromouth (CFC-124) and :! Monochloro-1,1,2,2-tetrafluoroethane (fluorocarbon-124a) is mentioned, and tetrafluorofluoroethane is 1,1,12-tetrafluorofluoroethane (fluorocarbon-134). a) and 1 1,2,2-tetrafluoroethane (CFC 1 34>) Is mentioned. Since CFC-124 and CFC-124A exert the same effect in the composition of the present invention, they can be interchanged or mixed with each other. The same applies to 34.
- the refrigerant of the present invention has a specific heat ratio smaller than Freon-122 and a discharge gas temperature of the compressor lower than Freon-222. It is also suitable as a medium.
- the composition of the present invention is a non-azeotropic composition.
- the evaporation temperature in the evaporator is constant because the evaporation is performed under a constant pressure, but in a non-azeotropic composition, the temperature is low at the evaporator inlet. The temperature rises at the evaporator outlet.
- the fluid to be cooled flows so as to exchange heat in the countercurrent direction with the flow of the refrigerant in the evaporator, so that even if the evaporation temperature of the refrigerant is constant, there is a temperature gradient along the flow. .
- the temperature difference between the refrigerant and the fluid to be cooled becomes smaller as the fluid to be cooled advances.
- the non-azeotropic composition refrigerant according to the present invention is used, the temperature gradient of the fluid to be cooled in the evaporator can be approximated, and the efficiency of refrigeration, that is, the coefficient of performance can be increased.
- CFC-143a and CFC-124 were mixed at various ratios (weight ratios) shown in Table 1 to obtain a refrigerant.
- Table 2 shows (I) Maximum steaming temperature [D], ( ⁇ ) Refrigeration capacity [kcal / ffl 3 ], (IE) performance coefficient, and (W) Compressor discharge temperature [D]. Table 2 shows the case where only CFC-143a is used (the results of Comparative Example 1 are also shown.
- Example 6 2.0 298 4.47 50.8 Also, in the first figure, Freon one 143 a and the front - shows a graph 1 off representing the relationship between the composition ratio and the coefficient of performance of the 12 4 (Kyoku ⁇ A).
- Example 12 5 9 5 Table 4 shows (I) maximum evaporation temperature [de], ( ⁇ ) refrigeration capacity [kcal / n 3 ],. (III) coefficient of performance and (W) compression birch discharge temperature of each refrigerant. ° C].
- Fig. 2 is a graph showing the relationship between the composition ratio of CFC-143a and CFC-134a and the coefficient of performance (curve B).
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Lubricants (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62238441A JPH075880B2 (ja) | 1987-09-21 | 1987-09-21 | 冷 媒 |
JP62/238441 | 1987-09-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1989002456A1 true WO1989002456A1 (en) | 1989-03-23 |
Family
ID=17030269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1988/000952 WO1989002456A1 (en) | 1987-09-21 | 1988-09-21 | Refrigerant |
Country Status (4)
Country | Link |
---|---|
US (1) | US5035823A (ja) |
EP (1) | EP0349647A1 (ja) |
JP (1) | JPH075880B2 (ja) |
WO (1) | WO1989002456A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0448997A2 (en) * | 1990-03-07 | 1991-10-02 | Daikin Industries, Limited | Refrigerant |
US5277834A (en) * | 1990-07-26 | 1994-01-11 | E. I. Du Pont De Nemours And Company | Near-azeotropic blends for use as refrigerants |
US5800730A (en) * | 1990-07-26 | 1998-09-01 | E. I. Du Pont De Nemours And Compnay | Near-azeotropic blends for use as refrigerants |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2792191B2 (ja) * | 1990-04-04 | 1998-08-27 | ダイキン工業株式会社 | 冷 媒 |
FR2682395B1 (fr) * | 1991-10-09 | 1993-12-10 | Atochem | Melanges de 1,1,1-trifluoroethane, de perfluoropropane et de propane, et leurs applications comme fluides frigorigenes, comme propulseurs d'aerosols ou comme agents d'expansion des mousses plastiques. |
FR2686092B1 (fr) * | 1992-01-13 | 1994-09-16 | Atochem Elf Sa | Melanges de 1,1,1-trifluoroethane et de perfluoropropane et leurs applications comme fluides frigorigenes, comme propulseurs d'aerosols ou comme agents d'expansion des mousses plastiques. |
US5294359A (en) * | 1992-02-03 | 1994-03-15 | Alliedsignal Inc. | Refrigerant compositions |
US5723429A (en) * | 1994-03-11 | 1998-03-03 | E. I. Du Pont De Nemours And Company | Azeotropic or azeotrope-like compositions of tetrafluoroethane and chlorotetrafluoroethane |
AU694975B2 (en) * | 1994-07-11 | 1998-08-06 | Solvay (Societe Anonyme) | Coolants |
US6261472B1 (en) * | 1996-11-04 | 2001-07-17 | E. I. Du Pont De Nemours And Company | Azeotrope-like compositions containing fluoroethane |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58171494A (ja) * | 1982-03-31 | 1983-10-08 | Daikin Ind Ltd | ランキンサイクル用動作流体 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3377287A (en) * | 1965-06-04 | 1968-04-09 | Du Pont | Refrigerant compositions |
NL7708731A (nl) * | 1976-08-13 | 1978-02-15 | Montedison Spa | Werkwijze voor de bereiding van nieuwe drijf- middelsamenstellingen voor aerosolen. |
US4224795A (en) * | 1978-12-26 | 1980-09-30 | Allied Chemical Corporation | Method for converting heat energy to mechanical energy with monochlorotetrafluoroethane |
US4303536A (en) * | 1980-12-29 | 1981-12-01 | Allied Corporation | Nonazeotropic refrigerant composition containing monachlorodifluoromethane, and method of use |
JP2507437B2 (ja) * | 1987-06-05 | 1996-06-12 | 旭硝子株式会社 | 作動媒体混合物 |
US4810403A (en) * | 1987-06-09 | 1989-03-07 | E. I. Du Pont De Nemours And Company | Halocarbon blends for refrigerant use |
JPS63308084A (ja) * | 1987-06-09 | 1988-12-15 | Asahi Glass Co Ltd | 作動媒体混合物 |
JPH0742454B2 (ja) * | 1987-06-09 | 1995-05-10 | 旭硝子株式会社 | 作動媒体混合物 |
-
1987
- 1987-09-21 JP JP62238441A patent/JPH075880B2/ja not_active Expired - Lifetime
-
1988
- 1988-09-21 EP EP88908343A patent/EP0349647A1/en not_active Ceased
- 1988-09-21 WO PCT/JP1988/000952 patent/WO1989002456A1/ja not_active Application Discontinuation
- 1988-09-21 US US07/362,385 patent/US5035823A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58171494A (ja) * | 1982-03-31 | 1983-10-08 | Daikin Ind Ltd | ランキンサイクル用動作流体 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0349647A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0448997A2 (en) * | 1990-03-07 | 1991-10-02 | Daikin Industries, Limited | Refrigerant |
EP0448997A3 (en) * | 1990-03-07 | 1992-03-11 | Daikin Industries, Limited | Refrigerant |
US5277834A (en) * | 1990-07-26 | 1994-01-11 | E. I. Du Pont De Nemours And Company | Near-azeotropic blends for use as refrigerants |
US5800730A (en) * | 1990-07-26 | 1998-09-01 | E. I. Du Pont De Nemours And Compnay | Near-azeotropic blends for use as refrigerants |
Also Published As
Publication number | Publication date |
---|---|
EP0349647A1 (en) | 1990-01-10 |
US5035823A (en) | 1991-07-30 |
EP0349647A4 (en) | 1989-08-22 |
JPS6479199A (en) | 1989-03-24 |
JPH075880B2 (ja) | 1995-01-25 |
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