GB2447629A - Refrigerant composition comprising three hydrofluorocarbon components - Google Patents
Refrigerant composition comprising three hydrofluorocarbon components Download PDFInfo
- Publication number
- GB2447629A GB2447629A GB0705219A GB0705219A GB2447629A GB 2447629 A GB2447629 A GB 2447629A GB 0705219 A GB0705219 A GB 0705219A GB 0705219 A GB0705219 A GB 0705219A GB 2447629 A GB2447629 A GB 2447629A
- Authority
- GB
- United Kingdom
- Prior art keywords
- refrigerant
- consisting essentially
- refrigerant composition
- air conditioning
- composition
- 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.)
- Withdrawn
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- 239000000203 mixture Substances 0.000 title claims abstract description 99
- 239000003507 refrigerant Substances 0.000 title claims abstract description 66
- 238000004378 air conditioning Methods 0.000 claims abstract description 18
- 238000005057 refrigeration Methods 0.000 claims abstract description 18
- 239000000314 lubricant Substances 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 6
- 239000001301 oxygen Substances 0.000 claims abstract description 6
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 229920005862 polyol Polymers 0.000 claims abstract description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract 2
- 229920000570 polyether Polymers 0.000 claims abstract 2
- -1 polyol ester Chemical class 0.000 claims abstract 2
- 238000005194 fractionation Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract 2
- 230000001988 toxicity Effects 0.000 abstract 1
- 231100000419 toxicity Toxicity 0.000 abstract 1
- 238000010792 warming Methods 0.000 abstract 1
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 30
- 239000012530 fluid Substances 0.000 description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 231100000053 low toxicity Toxicity 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- RWRIWBAIICGTTQ-UHFFFAOYSA-N anhydrous difluoromethane Natural products FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 description 2
- 230000000779 depleting effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 101001083536 Homo sapiens Host cell factor 2 Proteins 0.000 description 1
- 102100030357 Host cell factor 2 Human genes 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 1
- 239000010696 ester oil Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000005437 stratosphere Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/006—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant containing more than one component
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (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)
- Lubricants (AREA)
Abstract
A refrigerant composition suitable for air conditioning, refrigeration and heat pumping applications consists essentially of three hydrofluorocarbon (HFC) components selected from R134a (HFC134a), R125 (HFC125) and R143a (HFC143a). The refrigerant composition comprises 10-20% R134a, 40-65% R125 and 15-50% R143a, where the three components sum to give a total of 100%. The three components may be combined together in various proportions. Preferably, the refrigerant composition meets the criteria for safety classification A1 or A2 of ASHRAE Standard 34, with regard to toxicity and flammability. Preferred compositions comprise near azeotropic and zeotropic refrigerant compositions which are non-flammable under all conditions of fractionation. The refrigerant may be used in a refrigeration or air conditioning unit with a synthetic oxygen-containing lubricant such as a polyol ester or a polyether. Preferably, the refrigerant is used in a hermetic, semi-hermetic or open refrigeration, air conditioning or heat pump unit, driven by an external power source, to provide refrigeration cooling temperatures in a range from 0{C to -45{C, air conditioning cooling temperatures in a range from 0{C to 20{C, or heat pumping warming temperatures in a range from 15{C to 50{C. In use, the refrigerant composition is designed to replace R22 (HCFC22) in new equipment.
Description
REFRIGERANT COMPOSITION
This invention relates to refrigerant compositions, particularly but not exclusively to refrigerant compositions, which have minimal adverse effect on stratospheric ozone.
The invention particularly relates to compositions which are for use in new refrigeration, air conditioning and heat pumping equipment. These refrigerant compositions are compatible with the new synthetic lubricants, including but not restricted to polyol ester oils and FAG oils.
It is well kjiown that chiorofluorocarbons (CFCs) such as CFC 12 and CFC5O2 and hydrochlorofluorocarbons such as HCFC22 while being energy efficient, non flammable and of low toxicity, migrate to the stratosphere where they are broken down by ultra violet light to attack the ozone layer. It is desirable to replace these Ozone Depleting Substances (ODS) by non ozone depleting alternatives such as hydrofluorocarbons (HFCs) which are also non flammable, efficient and of low toxicity. There are six main HFCs, namely HFCI34a, HFC32, HFCI25, HFCI43a, :. 15 HFC227ea and HFC152a, which either individually or when blended into mixtures can replace CFCs and HCFCs. While HFCI34a, HFC227ea and HFCI52a can be used to replace ODS directly, HFC32, HFCI43a and HFC 125 are generally found in * :* blends as replacements for ODS. HFCs do not have adequate solubility in traditional lubricants such as mineral and alkylbenzene oils so that synthetic oxygen containing lubricants have been introduced specifically in order that HFCs can be used in new equipment. e
Refrigerant blends such as R404A, R507A and others have been commercial ised as replacements for CFCs and HCFCs at low temperature, typically operating at around -35 C in the evaporator but their performance declines as the temperature rises so that they are not effective, for example, as replacements for ODS in air conditioning applications. R404A and R507 have been formulated primarily to replace CFC5O2 at low temperatures, Refrigerant blends such as R407C, R4 I OA and others have been commercial ised as replacements for CFCs and HCFCs at medium to high temperatures, typically operating at around +50C in the evaporator and condensing at around +35 C but their performance declines as the temperature decreases so that they are not effective, for example, as replacements for ODS in refrigeration applications such as are used in supermarkets. R407C and R4IOA have been formulated primarily to replace HCFC22 for air conditioning applications. R407C is a zeotrope, not an azeotrope or near azeotrope, so its application is further restricted by having a comparatively high temperature glide in the evaporator which can cause icing at the entry of the evaporator thus reducing the energy efficiency and the capacity of the system.
Furthermore, R407C, being a zeotrope, is unacceptable for flooded systems where large composition shifts would occur resulting in large compression ratios and potential over-pressurisation of the condenser.
An object of this invention is to provide a refrigerant blend that can be readily used to replace R22 in new & existing equipment. It is especially important that such a blend should have an adequate refrigeration capacity. The capacity should be at least 90% of that of the fluid it is replacing, more preferably at least 95% of that of the fluid it is replacing and most preferably equal to or greater than that of the fluid it is replacing under similar operating conditions. It is an object of this invention to provide refrigerant compositions which have capacities similar to R22 across the range of applications for air conditioning & refrigeration from high to low temperatures where R22 is commonly found.
There is no HFC refrigerant blend which has been commercialised which has a safety :. 20 classification ofAl according to ASHRAE Standard 34, being of low toxicity and non flammable, which can match the capacity, performance and pressures of HFCF22 across the range of applications where HCFC2 is found including refrigeration and air conditioning applications including centrifugal chillers. An object of this invention is to provide refrigerant compositions with low temperature glides of less than 2 C that match the thermodynamic performance of I-ICFC22 across the temperature range of applications where HCFC22 is commonly found including refrigeration and air conditioning applications operating at evaporator temperatures ranging from +50C to -40 C.
It is known in the art that high compression ratios can result in increased energy expenditure and the potential for compressor damage. This invention relates to refrigerant compositions which have compression ratios which should be at least no more than 10% of that of the fluid it is replacing, more preferably no more than 5% of that of the fluid it is replacing and most preferably equal to or lower than that of the fluid it is replacing under similar operating conditions. Preferred aspects of this invention relate to refrigerant compositions which have compression ratios which are similar to R22 across the range of applications for air conditioning & refrigeration from high to low temperatures where R22 is commonly found.
Various terms have been used in patent literature to describe refrigerant mixtures. The following definitions are taken from Standard 34 of the American Society of Heating, Refrigerating & Air Conditioning Engineers (ASHRAE); Azeotrope: an azeotropic blend is one containing two or more refrigerants whose equilibrium vapour and liquid phase compositions are the same at a given pressure.
Azeotropic blends exhibit some segregation of components at other conditions. The extent of the segregation depends on the particular azeotrope and the application.
Azeotropic temperature: the temperature at which the liquid and vapour phases of a blend have the same mole fractionation of each component at equilibrium for a specified pressure.
Near azeotrope: a zeotropic blend with a temperature glide sufficiently small that it :* may be disregarded without consequential error in analysis for a specific application.
Zeotrope: blends comprising multiple components of different volatilities that, when used in refrigeration cycles, change volumetric composition and saturation SI'.
temperatures as they evaporate (boil) or condense at constant pressure.
Temperature glide: the absolute value of the difference between the starting and ending temperatures of a phase-change process by a refrigerant within a component of a refrigerating system, exclusive of any subcooling or superheating. This term usually describes condensation or evaporation of a zeotrope.
According to the present invention, a refrigerant compositions consists essentially of the following hydrofluorocarbon components: R134a lOto2O% R125 40 to 65% R143a 50to15% wherein the percentages above are selected to total 100%; which preferably at least meet the criteria for safety classification A2 of ASHRAE Standard 34 and more preferably meet the stricter Al classification.
Compositions in accordance with this invention do not contain an effective amount of a hydrocarbon component. Preferably, no hydrocarbon or mixture of hydrocarbons is present.
Preferred compositions comprise near azeotropic and zeotropic refrigerant compositions, which are non flammable under all conditions of fractionation as defined under ASHRAE Standard 34, and which can be used to replace HCFC22 in new equipment across the application ranges including refrigeration and air conditioning and centrifugal chillers. These refrigerant applications are compatible with the oxygen containing synthetic lubricants including but not restricted to POE, PAG,POE etc. Not all HFCs are non flammable as defined under ASHRAE Standard 34. HFCI43a and I-1FC32 have not received a non flammable rating by ASHRAE. Preferred embodiments of this invention relate to compositions of refrigerants which cover blends of non flammable HFCs with flammable HFCs selected so that all such compositions are non flammable during fractionation while providing similar refrigerating effects and thermodynamic performances HCFC22.
* * 20 To avoid flammability in the blend, or in a fraction generated by a leak, for example as defined by ASHRAE Standard 34, the ratio of flammable HFC to non flammable * HFC should be minimised but without adversely affecting the thermodynamic performance of the composition. One of the 1-IFC components of this invention, namely l-IFCl43a, has an ASHRAE safety classification of A2 which makes limitation of the amount ofHFCl43a used relative to the amounts of non-flammable components important to obtaining a non flammable rating ofAl for the blend Preferred compositions comprise unique combinations of HFCs resulting in refrigerant compositions which provide very similar performance to HCFC22 across the the evaporating temperature range commonly associated with HCFC22.
This invention also relates to refrigerant compositions which can be used to replace HCFC 22 in new equipment.
S
A particularly preferred composition which may find application as a replacement for R22 consists essentially of: R134a 20% R125 40% Rl43a 40% A further preferred composition which may find application as a replacement for R22 consists essentially of: R134a 16% R125 42% R143a 42% Yet another preferred composition which may find application as a replacement for R22 consists essentially of: R134a 17% * I.. a...
R125 42% R143a 41% * S S * S An especially preferred composition which may find application as a replacement for R22 consists essentially of: **I*'. * S
** R134a 19% * * S * ** R125 41% Rl43a 41% Another particularly preferred composition which may find application as a replacement for R22 consists essentially of: R134a 19% R125 41% Rl43a 40% A preferred composition which may find application as a replacement for R22 consists essentially of: R134a fOto2O% R125 40to60% R143a 50to20% Another preferred composition which may find application as a replacement for R22 consists essentially of R134a lOto2O% R125 40to55% R143a 50to25% Yet another preferred composition which may find application as a replacement for R22 consists essentially of R134a IOto2O% * * * I..
R125 40to50% * * R143a 50to30% ** ** : * * A further preferred composition which may find application as a replacement for R22 * Consists essentially of: ** a R134a lOto2O% a ****** * * ** * R125 80to20% * S S * I* Rl43a lOto6O% Another preferred composition which may find application as a replacement for R22 consists essentially of R134a lOto2O% R125 70to30% Rl43a 20to50% A yet further preferred composition which may find application as a replacement for R22 consists essentially of R134a lOto2O% R125 65 to 25% R143a 25to55% Another preferred composition which may find application as a replacement for R22 consists essentially of R134a 15to20% R125 40 to 65% R143a 45to15% Yet another preferred composition which may find application as a replacement for R22 consists essentially of R134a 15to20% S. * * * *..
R125 40to60% ***.
R143a 45to20% A further preferred composition which may find application as a replacement for R22 * consists essentially of R134a 15to20% * S ** S R125 40 to 55% R143a 45 to 25% Another preferred composition which may find application as a replacement for R22 consists essentially of R134a 15to20% R125 40 to 50% R143a 45to30% Yet another composition which may find application as a replacement for R22 consists essentially of R134a 15% R125 60% R143a 25% A further preferred composition which may find application as a replacement for R22 consists essentially of R134a 15% R125 55% R143a 30% Another preferred composition which may find application as a replacement for R22 Consists essentially of: R134a 15% R125 50% R143a 35% S. *.:: Yet another preferred composition which may find application as a replacement for R22 consists essentially of R134a 15% R125 45% R143a 40%
S
A further preferred composition which may find application as a replacement for R22 consists essentially of R134a 20% R125 65% R143a 15% Another preferred composition which may find application as a replacement for R22 consists essentially of R134a 20% R125 60% R143a 20% A further preferred composition which may find application as a replacement for R22 consists essentially of R134a 20% R125 55% R143a 25% Yet another preferred composition which may find application as a replacement for R22 consists essentially of R134a 20% R125 50% R143a 30% Another preferred composition which may find application as a replacement for R22 consists essentially of S. * * * . R134a 20% S... * S S...
R125 45% R143a 35% *S.
Percentages and other proportions referred to in this specification are by weight * unless indicated otherwise and are selected to total 100% from within the ranges S.....
disclosed.
Claims (39)
1. A refrigerant composition suitable for air conditioning, refrigeration and heat pumping applications consisting essentially of: Rl34a lOto2O% Rl25 40to65% R143a 50tol5%
2. A refrigerant composition as claimed in claim I consisting essentially of: Rl34a lOto2O% Rl25 40to60% R143a 50to20%
3. A refrigerant composition as claimed in claim 2 consisting essentially of: R134a lOto2O% * * * *.* *** ***,* R125 40to55% Rl43a 50to25% *
4. A refrigerant composition as claimed in claim 3 consisting essentially of: S..
R134a lOto2O% * * * R125 40 to 50% * S * * ..
R143a 50to30%
5. A refrigerant composition as claimed in claim 4 consisting essentially of: R134a lOto2O% R125 40to45% R143a 50to35%
6. A refrigerant composition as claimed in claim I consisting essentially of: R134a lOto2O% R125 65to25%
II
R143a 25 to 55%
7. A refrigerant composition as claimed in claim I consisting essentially of: R134a 15to20% R125 40to65% R143a 45tol5%
8. A refrigerant composition as claimed in claim 2 consisting essentially of: R134a 15to20% R125 40 to 60% R143a 45to20%
9. A refrigerant composition as claimed in claim 8 consisting essentially of: R134a 15to20% R125 40 to 55% R143a 45to25% * .** *::::*
10. A refrigerant composition as claimed in claim 9 consisting essentially of: R134a 15to20% R125 40to50% Rl43a 45to30% S..... * S *. S * SI * **
II. A refrigerant composition as claimed in claim I consisting essentially of: R134a 15% R125 65% R143a 20%
12. A refrigerant composition as claimed in claim 2 consisting essentially of: Rl34a 15% R125 60% R143a 25%
13. A refrigerant composition as claimed in claim 4 consisting essentially of: R134a 15% R125 55% R143a 30%
14. A refrigerant composition as claimed in claim 4 consisting essentially of: R134a 15% R125 50% R143a 35%
15. A refrigerant composition as claimed in claim 4 consisting essentially of: R134a 15% R125 45% :. R143a 40% * ***
16. A refrigerant composition as claimed in claim 1 consisting essentially of: R134a 20% R125 65% * R143a 15% *.*..*
17. A refrigerant composition as claimed in claim 2 consisting essentially of: Rl34a 20% R125 60% R143a 20%
18. A refrigerant composition as claimed in claims 3 consisting essentially of: R134a 20% R125 55% R143a 25%
19. A refrigerant composition as claimed in claims 8 consisting essentially of: R134a 20% R125 50% R143a 30%
20. A refrigerant composition as claimed in claims 8 consisting essentially of: Rl34a 20% R125 45% R143a 35%
21. A refrigerant composition as claimed in claims 10 consisting essentially of: R134a 20% R125 40% R143a 40%
22. A refrigerant composition as claimed in claims 10 consisting essentially of: S. * * * .. Rl34a 16% *. * . S...
R125 42% S. ** : . 15 R143a 42% *..
23. A refrigerant composition as claimed in claims 10 consisting essentially of:
S
*S....
* R134a 17% S* * * S S * 55 R125 42% R143a 41%
24. v A refrigerant composition as claimed in claims 10 consisting essentially of: R134a 19% R125 41% R143a 41%
25. A refrigerant composition as claimed in claims 10 consisting essentially of: R134a 19% R125 41% R143a 40%
26. Compositions as claimed in Claims 1-25 which meet the criteria for safety classifications Al and A2 of ASHRAE Standard 34
27. Compositions as claimed in Claim 1-25 which meet the criteria for safety classification Al of ASI-IRAE Standard 34
28. A refrigerant as claimed in claims I to 27 used in an air conditioning unit with a synthetic oxygen-containing lubricant.
29. A refrigerant as claimed in claims I to 27 used in a refrigeration unit with a synthetic oxygen containing lubricant.
30. A refrigerant as claimed in claims 28 and 29 in which the lubricant is a polyol ester.
31. A refrigerant as claimed in claims 28 and 29 in which the lubricant is a polyether.
32. A refrigerant as claimed in claims Ito 27 used in an air conditioning unit in which the lubricant is a mixture of oxygen-conining lubricants. I. **
*
33. A refrigerant as claimed in claims I to 27 used in a refrigeration unit in which the lubricant is a mixture of oxygen-containing lubricants.
34. A refrigerant as claimed in claims Ito 33 used in an hermetic or semi-hermetic refrigeration unit providing cold temperatures in a range between 0 C and -45 C.
35. A refrigerant as claimed in claims 1 to 33 used in an open refrigeration unit driven by an external power source providing cold temperatures in a range between 0 C and -45 C.
36. A refrigerant as claimed in claims 1 to 33 used in an hermetic or semi-hermetic air conditioning unit providing cold temperatures in a range between 0 C and 20 C.
37. A refrigerant as claimed in claims I to 33 used in an open air conditioning unit driven by an external power source providing cold temperatures in a range between 0 C and 20 C.
38. A refrigerant as claimed in claims I to 33 used in an hermetic or semi-hermetic heat pump unit providing warm temperatures in a range between 15 C and 50 C.
39. A refrigerant as claimed in claims I to 33 used in an open heat pump unit driven by an external power source providing warm temperatures in a range between 15 CandSO C. * * * *** * * ***. S. ** * * . * . * 15 *
S
S..... * S * S * S I * ..
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0705219A GB2447629A (en) | 2007-03-19 | 2007-03-19 | Refrigerant composition comprising three hydrofluorocarbon components |
| PCT/GB2008/000911 WO2008113984A1 (en) | 2007-03-19 | 2008-03-14 | Refrigerant composition |
| CA002681272A CA2681272A1 (en) | 2007-03-19 | 2008-03-14 | Refrigerant composition |
| EP08718751A EP2125986A1 (en) | 2007-03-19 | 2008-03-14 | Refrigerant composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0705219A GB2447629A (en) | 2007-03-19 | 2007-03-19 | Refrigerant composition comprising three hydrofluorocarbon components |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0705219D0 GB0705219D0 (en) | 2007-04-25 |
| GB2447629A true GB2447629A (en) | 2008-09-24 |
Family
ID=38008668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0705219A Withdrawn GB2447629A (en) | 2007-03-19 | 2007-03-19 | Refrigerant composition comprising three hydrofluorocarbon components |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2125986A1 (en) |
| CA (1) | CA2681272A1 (en) |
| GB (1) | GB2447629A (en) |
| WO (1) | WO2008113984A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2644560C (en) | 2006-03-03 | 2014-10-14 | Rpl Holdings Limited | Refrigerant composition |
| GB0922288D0 (en) | 2009-12-21 | 2010-02-03 | Rpl Holdings Ltd | Non ozone depleting and low global warming potential refrigerants for refrigeration |
| GB201505230D0 (en) | 2015-03-27 | 2015-05-13 | Rpl Holdings Ltd | Non ozone depleting and low global warming refrigerant blends |
| PL3704203T3 (en) | 2017-11-27 | 2023-08-21 | Rpl Holdings Limited | Low gwp refrigerant blends |
| JP2023546463A (en) | 2020-10-22 | 2023-11-02 | アールピーエル ホールディングス リミテッド | heat pump refrigerant |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03170588A (en) * | 1989-11-30 | 1991-07-24 | Matsushita Electric Ind Co Ltd | Working fluid |
| US5277834A (en) * | 1990-07-26 | 1994-01-11 | E. I. Du Pont De Nemours And Company | Near-azeotropic blends for use as refrigerants |
| JPH08100170A (en) * | 1994-09-30 | 1996-04-16 | Asahi Glass Co Ltd | Working fluid mixture |
| US5910161A (en) * | 1994-09-20 | 1999-06-08 | Fujita; Makoto | Refrigerating apparatus |
| WO2005028586A2 (en) * | 2003-09-19 | 2005-03-31 | Arkema | Hydrofluorocarbon-based composition and use thereof |
| WO2005083028A1 (en) * | 2004-02-27 | 2005-09-09 | Rpl Holdings Limited | Refrigerant composition |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2792191B2 (en) * | 1990-04-04 | 1998-08-27 | ダイキン工業株式会社 | Coolant |
| CA2086841C (en) * | 1990-07-26 | 2000-05-02 | Donald Bernard Bivens | Near-azeotropic blends for use as refrigerants |
| IL108066A0 (en) * | 1993-01-07 | 1994-04-12 | Exxon Chemical Patents Inc | Refrigeration working fluid compositions containing difluoroethane or pentafluoroethane |
| JPH08313120A (en) * | 1995-05-15 | 1996-11-29 | Matsushita Electric Ind Co Ltd | Three-constituent mixture refrigerant filling device and filling method |
-
2007
- 2007-03-19 GB GB0705219A patent/GB2447629A/en not_active Withdrawn
-
2008
- 2008-03-14 CA CA002681272A patent/CA2681272A1/en not_active Abandoned
- 2008-03-14 EP EP08718751A patent/EP2125986A1/en not_active Withdrawn
- 2008-03-14 WO PCT/GB2008/000911 patent/WO2008113984A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03170588A (en) * | 1989-11-30 | 1991-07-24 | Matsushita Electric Ind Co Ltd | Working fluid |
| US5277834A (en) * | 1990-07-26 | 1994-01-11 | E. I. Du Pont De Nemours And Company | Near-azeotropic blends for use as refrigerants |
| US5910161A (en) * | 1994-09-20 | 1999-06-08 | Fujita; Makoto | Refrigerating apparatus |
| JPH08100170A (en) * | 1994-09-30 | 1996-04-16 | Asahi Glass Co Ltd | Working fluid mixture |
| WO2005028586A2 (en) * | 2003-09-19 | 2005-03-31 | Arkema | Hydrofluorocarbon-based composition and use thereof |
| WO2005083028A1 (en) * | 2004-02-27 | 2005-09-09 | Rpl Holdings Limited | Refrigerant composition |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2681272A1 (en) | 2008-09-25 |
| EP2125986A1 (en) | 2009-12-02 |
| WO2008113984A1 (en) | 2008-09-25 |
| GB0705219D0 (en) | 2007-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |