WO1997034961B1 - DROP-IN SUBSTITUTES FOR 1,1,1,2-TETRAFLUOROETHANE (R-134a) REFRIGERANT - Google Patents
DROP-IN SUBSTITUTES FOR 1,1,1,2-TETRAFLUOROETHANE (R-134a) REFRIGERANTInfo
- Publication number
- WO1997034961B1 WO1997034961B1 PCT/US1997/004592 US9704592W WO9734961B1 WO 1997034961 B1 WO1997034961 B1 WO 1997034961B1 US 9704592 W US9704592 W US 9704592W WO 9734961 B1 WO9734961 B1 WO 9734961B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight percent
- mixture
- present
- refrigerant
- tetrafluoroethane
- Prior art date
Links
- 239000003507 refrigerant Substances 0.000 title claims abstract 18
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 title claims abstract 17
- 239000000203 mixture Substances 0.000 claims abstract 18
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 claims 8
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 claims 7
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims 4
- 239000001282 iso-butane Substances 0.000 claims 4
- 238000005057 refrigeration Methods 0.000 claims 4
- FDOPVENYMZRARC-UHFFFAOYSA-N 1,1,1,2,2-pentafluoropropane Chemical compound CC(F)(F)C(F)(F)F FDOPVENYMZRARC-UHFFFAOYSA-N 0.000 claims 2
- NPNPZTNLOVBDOC-UHFFFAOYSA-N 1,1-difluoroethane Chemical compound CC(F)F NPNPZTNLOVBDOC-UHFFFAOYSA-N 0.000 claims 2
- 229940051271 1,1-difluoroethane Drugs 0.000 claims 2
- 239000001294 propane Substances 0.000 claims 2
- 206010019233 Headaches Diseases 0.000 abstract 2
- 239000002480 mineral oil Substances 0.000 abstract 2
- 235000010446 mineral oil Nutrition 0.000 abstract 2
- 239000011269 tar Substances 0.000 abstract 2
- 239000001993 wax Substances 0.000 abstract 2
- 238000009835 boiling Methods 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Abstract
A group of refrigerant fluids that may be combined in novel ways to produce several excellent 'drop-in' substitutes for R-134a refrigerant. Performance is increased by constructing a zeotropic mixture of refrigrants, such that a single boiling point (of R-134a) is replaced by a 'temperature glide' between the mixture's 'bubble point' and 'dew point'. The temperature glide causes the phase change area in the condenser to be larger than with a single component refrigerant such as R-134a, thereby increasing heat rejection of the condenser, which lowers head pressures, and increases capacities and efficiencies compared to R-134a. Components are also selected to attempt to reduce the overall critical temperature of the mixture of refrigerants, also increasing performance and lowering head pressures under hot conditions with undersized condensers. Finally, a small amount of a mineral oil miscibility improver may be added, not to return mineral oil from the evaporator as in R-12 systems, but to keep waxes, tars, and other contaminates in the system that may have arisen from the manufacturing process (such as wax coatings on the motor windings in a hermetic compressor, or 'tar' from valve packing) soluble.
Claims
35
AMENDED CLAIMS
[received by the International Bureau on 30 September 1997 (30 09 97), original claims 10-12 amended, remaining claims unchanged (2 pages)]
6 The mixture of refrigerants of claim 1 in which heptafluoropropane is present in about 45 weight percent, 1 ,1- difluoroethane is present in about 15 weight percent, and pentafiuoroethane is present in about 40 weight percent
7 The mixture of refrigerants of claim 1 in which heptafluoropropane is present in about 45 weight percent, 1 ,1- difluoroethane is present in about 20 weight percent, and pentafiuoroethane is present in about 35 weight percent
8 A mixture of refrigerants that is a drop-in substitute for 1 ,1 ,1 ,2-tetrafluoroethane refrigerant in 1 ,1 , 1 ,2-tetrafluoroethane refrigeration systems, comprising about 75 weight percent heptafluoropropane, and about 25 weight percent pentafiuoroethane, with the weight percentages of said components being weight percentages of the overall mixture
9 A mixture of refrigerants that is a drop-in substitute for
1 ,1 ,1 ,2-tetrafluoroethane refrigerant in 1 ,1 ,1 ,2-tetrafluoroethane refrigeration systems, comprising about 1 weight percent isobutane, about 75 weight percent heptafluoropropane, and about 24 weight percent pentafiuoroethane, with the weight percentages of said components being weight percentages of the overall mixture
10 A mixture of refrigerants that is a drop-in substitute for 1 ,1 ,1 ,2-tetrafluoroethane refrigerant in 1 ,1 ,1 ,2-tetrafluoroethane refrigeration systems, comprising about 1 weight percent isobutane, about 22 - 57 weight percent heptafluoropropane, about 22 - 32 weight percent
pentafiuoroethane, and about 10 weight percent 1 ,1 ,1 ,2-tetrafluoroethane, with the weight percentages of said components being weight percentages of the overall mixture
11 The mixture of refrigerants of claim 10 in which isobutane is present in about 1 weight percent, heptafluoropropane is present in about 67 weight percent, pentafiuoroethane is present in about 22 weight percent, and 1 ,1 ,1 ,2-tetrafluoroethane is present in about 10 weight percent, with the weight percentages of said components being weight percentages of the overall mixture
12 The mixture of refrigerants of claim 10 in which isobutane is present in about 1 weight percent, heptafluoropropane is present in about 57 weight percent, pentafiuoroethane is present in about 32 weight percent, and 1 ,1 ,1 ,2-tetrafluoroethane is present in about 10 weight percent, with the weight percentages of said components being weight percentages of the overall mixture
13 A mixture of refrigerants that is a drop-in substitute for 1 ,1 ,1 ,2-tetrafluoroethane refrigerant in 1 ,1 ,1 ,2-tetrafluoroethane refrigeration systems, comprising about 48 - 58 weight percent 1 ,1 ,1 ,2,2- pentafluoropropane, about 41 - 51 weight percent pentafiuoroethane, and about 1 weight percent propane, with the weight percentages of said components being weight percentages of the overall mixture
14 The mixture of refrigerants of claim 13 in which 1 ,1 ,1 ,2,2- pentafluoropropane is present in about 58 weight percent, pentafiuoroethane is present in about 41 weight percent, and propane is
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU25862/97A AU2586297A (en) | 1996-03-22 | 1997-03-21 | Drop-in substitutes for 1,1,1,2-tetrafluoroethane (r-134a) refrigerant |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1394696P | 1996-03-22 | 1996-03-22 | |
| US60/013,946 | 1996-03-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1997034961A1 WO1997034961A1 (en) | 1997-09-25 |
| WO1997034961B1 true WO1997034961B1 (en) | 1997-11-20 |
Family
ID=21762652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1997/004592 WO1997034961A1 (en) | 1996-03-22 | 1997-03-21 | DROP-IN SUBSTITUTES FOR 1,1,1,2-TETRAFLUOROETHANE (R-134a) REFRIGERANT |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5954995A (en) |
| AU (1) | AU2586297A (en) |
| WO (1) | WO1997034961A1 (en) |
Families Citing this family (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998037164A1 (en) * | 1997-02-24 | 1998-08-27 | Alliedsignal Inc. | Azeotrope-like compositions of pentafluoropropane and tetrafluoroethane |
| IT1293326B1 (en) * | 1997-07-11 | 1999-02-16 | Ausimont Spa | REFRIGERANT COMPOSITIONS |
| CZ298309B6 (en) * | 1997-07-15 | 2007-08-22 | E.I.Du Pont De Nemours And Company | Refrigerant compositions and use thereof |
| US6076372A (en) * | 1998-12-30 | 2000-06-20 | Praxair Technology, Inc. | Variable load refrigeration system particularly for cryogenic temperatures |
| US7258813B2 (en) * | 1999-07-12 | 2007-08-21 | E.I. Du Pont De Nemours And Company | Refrigerant composition |
| GB2356867A (en) * | 1999-12-03 | 2001-06-06 | Rhodia Ltd | Refrigeration Compositions |
| FR2813610B1 (en) * | 2000-09-04 | 2002-10-18 | Atofina | COMPOSITION FOR USE AS A REFRIGERATION FLUID |
| US6516837B2 (en) | 2000-09-27 | 2003-02-11 | Honeywell International Inc. | Method of introducing refrigerants into refrigeration systems |
| WO2003024537A1 (en) * | 2001-09-21 | 2003-03-27 | Honeywell International, Inc. | Fire suppressing and extinguishing compositions |
| GB0206413D0 (en) * | 2002-03-19 | 2002-05-01 | Refrigerant Products Ltd | Refrigerant for centrifugal compressors |
| AU2003247739A1 (en) * | 2002-06-27 | 2004-01-19 | George H. Goble | Nonflammable, nonozone depleting, refrigerant mixtures suitable for use in mineral oil |
| WO2004031318A1 (en) * | 2002-10-01 | 2004-04-15 | Tieken James B | Refrigerant blend |
| GB0223724D0 (en) | 2002-10-11 | 2002-11-20 | Rhodia Organique Fine Ltd | Refrigerant compositions |
| MXPA05005692A (en) | 2002-11-29 | 2005-10-18 | Rhodia Organique Fine Ltd | Chiller refrigerants. |
| CA2542981A1 (en) * | 2003-10-21 | 2005-05-12 | Union Carbide Chemicals & Plastics Technology Corporation | Refrigerant composition |
| US7560045B2 (en) * | 2003-10-21 | 2009-07-14 | Dow Global Technologies, Inc. | Refrigerant composition |
| CN1328350C (en) * | 2004-04-05 | 2007-07-25 | 天津大学 | Middle and high temperature heat pump mixed working medium containing HFC245fa |
| EP2380942B1 (en) | 2006-03-03 | 2016-10-19 | Rpl Holdings Limited | Refrigerant composition |
| JP5139665B2 (en) * | 2006-11-02 | 2013-02-06 | 出光興産株式会社 | Lubricating oil composition for refrigerator |
| ES2333193B1 (en) * | 2008-04-03 | 2010-12-10 | Advanced Ideas, S.L. | USEFUL COMPOSITION AS A REFRIGERANT FLUID AND ITS USE IN A HEAT TRANSFER SYSTEM. |
| CA3093427A1 (en) | 2008-05-07 | 2009-11-12 | The Chemours Company Fc, Llc | Compositions comprising 1,1,1,2,3-pentafluoropropane or 2,3,3,3-tetrafluoropropene |
| GB0922288D0 (en) * | 2009-12-21 | 2010-02-03 | Rpl Holdings Ltd | Non ozone depleting and low global warming potential refrigerants for refrigeration |
| EP2808625B1 (en) * | 2012-01-24 | 2020-05-20 | Mitsubishi Electric Corporation | A refrigerant charging method for an air-conditioning apparatus |
| US8652348B1 (en) * | 2012-12-18 | 2014-02-18 | Ahmad M. Shihab | Drop in refrigerant blend for mineral oil based systems |
| US8999191B2 (en) | 2013-03-15 | 2015-04-07 | National Refrigerants, Inc. | R22 replacement refrigerant |
| US10330364B2 (en) * | 2014-06-26 | 2019-06-25 | Hudson Technologies, Inc. | System and method for retrofitting a refrigeration system from HCFC to HFC refrigerant |
| GB201505230D0 (en) | 2015-03-27 | 2015-05-13 | Rpl Holdings Ltd | Non ozone depleting and low global warming refrigerant blends |
| US20190122479A1 (en) * | 2017-10-23 | 2019-04-25 | Nidec Motor Corporation | Drive system for vending machine |
| CA3083557A1 (en) | 2017-11-27 | 2019-05-31 | Rpl Holdings Limited | Low gwp refrigerant blends |
| WO2019239528A1 (en) * | 2018-06-13 | 2019-12-19 | 日立ジョンソンコントロールズ空調株式会社 | Refrigerant composition and refrigeration cycle device using same |
| EP4214292A2 (en) | 2020-10-22 | 2023-07-26 | RPL Holdings Limited | Thermal pump refrigerants |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2847797B2 (en) * | 1989-09-06 | 1999-01-20 | ダイキン工業株式会社 | Working fluid |
| JP2792191B2 (en) * | 1990-04-04 | 1998-08-27 | ダイキン工業株式会社 | Coolant |
| CA2105565C (en) * | 1991-03-18 | 2003-11-04 | Robert Gerard Richard | Non-azeotropic refrigerant compositions comprising difluoromethane; 1,1,1-trifluoroethane; or propane |
| EP0557533A1 (en) * | 1991-09-12 | 1993-09-01 | Daikin Industries, Ltd. | Blowing agent composition |
| FR2681852B1 (en) * | 1991-09-27 | 1993-12-17 | Kodak Pathe | PROCESS FOR THE CONTINUOUS PREPARATION OF VANADIUM PENTOXIDE GELS AND APPARATUS FOR IMPLEMENTING THE PROCESS. |
| WO1993011201A1 (en) * | 1991-12-03 | 1993-06-10 | United States Environmental Protection Agency | Refrigerant compositions and processes for using same |
| IL106132A0 (en) * | 1992-06-25 | 1993-10-20 | Great Lakes Chemical Corp | Refrigerant composition containing 1,1,1,2,3,3,3-heptafluoropropane and methods utilizing the same |
| BR9406264A (en) * | 1993-01-20 | 1996-01-30 | Ici Plc | Non-azeotropic refrigerant composition |
-
1997
- 1997-03-20 US US08/820,843 patent/US5954995A/en not_active Expired - Lifetime
- 1997-03-21 WO PCT/US1997/004592 patent/WO1997034961A1/en active Application Filing
- 1997-03-21 AU AU25862/97A patent/AU2586297A/en not_active Abandoned
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