Heat transfer fluid replacing R-410A
US-9011711-B2 · Apr 21, 2015 · US
Heat transfer method
US2016244652A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016244652-A1 |
| Application number | US-201615142898-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 29, 2016 |
| Priority date | Sep 11, 2009 |
| Publication date | Aug 25, 2016 |
| Grant date | — |
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Abstract
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A heat transfer method using ternary compositions containing 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane and difluoromethane, said compositions being especially interesting as a heat transfer fluid in compression refrigeration systems comprising exchangers operation in counterflow mode or in split flow mode with counterflow tendency. The use of a ternary composition of 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane and difluoromethane as heat transfer fluid in compression-type refrigeration systems with exchangers operating in countercurrent mode or in crossed-current mode with countercurrent tendency.
First claim
Opening claim text (preview).
1 . The use of a ternary composition of 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane and difluoromethane as heat transfer fluid in compression-type refrigeration systems with exchangers operating in countercurrent mode or in crossed-current mode with countercurrent tendency. 2 . The use as claimed in claim 1 , characterized in that the ternary composition contains essentially from 20 to 80 wt. % of 2,3,3,3-tetrafluoropropene and from 15 to 40 wt. % of difluoromethane and from 5 to 40 wt. % of difluoroethane. 3 . The use as claimed in claim 1 , characterized in that the ternary composition contains essentially from 20 to 70 wt. % of 2,3,3,3-tetrafluoropropene and from 20 to 40 wt. % of difluoromethane and from 10 to 40 wt. % of difluoroethane. 4 . The use as claimed in claim 1 , characterized in that the composition contains essentially from 35 to 70 wt. % of 2,3,3,3-tetrafluoropropene and from 20 to 25 wt. % of difluoromethane and from 10 to 40 wt. % of difluoroethane. 5 . The use as claimed in claim 1 , characterized in that the composition is stabilized. 6 . A method of heat transfer in which ternary compositions of 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane and difluoromethane are used as heat transfer fluid in compression-type refrigeration systems with exchangers operating in countercurrent mode or in crossed-current mode with countercurrent tendency. 7 . The method as claimed in claim 6 , characterized in that the composition contains essentially from 35 to 70 wt. % of 2,3,3,3-tetrafluoropropene and from 20 to 25 wt. % of difluoromethane and from 10 to 40 wt. % of difluoroethane. 8 . The method as claimed in claim 6 , characterized in that it is employed in the presence of a lubricant.
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Classifications
All components of a mixture being fluoro compounds · CPC title
- C09K5/045Primary
containing only fluorine as halogen · CPC title
Unsaturated fluorinated hydrocarbons · CPC title
Compression machines, plants or systems, with reversible cycle (defrosting cycles F25B47/02) · CPC title
the refrigerant containing more than one component (F25B9/004 takes precedence) · CPC title
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- What does patent US2016244652A1 cover?
- A heat transfer method using ternary compositions containing 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane and difluoromethane, said compositions being especially interesting as a heat transfer fluid in compression refrigeration systems comprising exchangers operation in counterflow mode or in split flow mode with counterflow tendency. The use of a ternary composition of 2,3,3,3-tetrafluoropro…
- Who is the assignee on this patent?
- Arkema France
- What technology area does this patent fall under?
- Primary CPC classification C09K5/045. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Aug 25 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).