Composition for heat cycle system, and heat cycle system
US-9725632-B2 · Aug 8, 2017 · US
Composition for heat cycle system, and heat cycle system
US2016333245A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016333245-A1 |
| Application number | US-201615223769-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 29, 2016 |
| Priority date | Feb 20, 2014 |
| Publication date | Nov 17, 2016 |
| Grant date | — |
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Abstract
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To provide a composition for a heat cycle system having less influence over the ozone layer, having a low global warming potential and having excellent durability, and a heat cycle system. A composition for a heat cycle system comprising a working fluid containing trifluoroethylene and difluoromethane, and a lubricating oil, wherein the interaction distance (Ra 1123 ) between trifluoroethylene and the lubricating oil as determined from the Hansen solubility parameters is shorter than the interaction distance (Ra 32 ) between difluoromethane and the lubricating oil.
First claim
Opening claim text (preview).
What is claimed is: 1 . A composition for a heat cycle system comprising a working fluid containing trifluoroethylene and difluoromethane, and a lubricating oil, wherein the interaction distance (Ra 1123 ) between trifluoroethylene and the lubricating oil as determined from the Hansen solubility parameters is shorter than the interaction distance (Ra 32 ) between difluoromethane and the lubricating oil. 2 . The composition for a heat cycle system according to claim 1 , wherein the difference (Ra 32 -Ra 1123 ) between the interaction distance (Ra 1123 ) and the interaction distance (Ra 32 ) is at least 1. 3 . The composition for a heat cycle system according to claim 1 , wherein the lubricating oil is at least one member selected from the group consisting of an ester lubricating oil, a polyglycol oil and a fluorinated lubricating oil. 4 . The composition for a heat cycle system according to claim 1 , wherein the mass ratio of the working fluid to the lubricating oil is from 1/10 to 10/1. 5 . The composition for a heat cycle system according to claim 1 , wherein the mass ratio (trifluoroethylene/difluoromethane) of trifluoroethylene to difluoromethane in the working fluid is from 1/99 to 99/1 . 6 . The composition for a heat cycle system according to claim 1 , wherein the proportion of the content of trifluoroethylene in the working fluid is at least 10 mass % based on the entire amount of the working fluid. 7 . The composition for a heat cycle system according to claim 1 , wherein the total amount of trifluoroethylene and difluoromethane in the working fluid is at least 70 mass % per 100 mass % of the working fluid. 8 . The composition for a heat cycle system according to claim 1 , wherein the working fluid further contains at least one hydrofluoroolefin selected from 2,3,3,3-tetrafluoropropene, trans-1,3,3,3-tetrafluoropropene and cis-1,3,3,3-tetrafluoropropene. 9 . The composition for a heat cycle system according to claim 8 , wherein the interaction distance between the hydrofluoroolefin and the lubricating oil is equal to or longer than the interaction distance (Ra 1123 ) between trifluoroethylene and the lubricating oil. 10 . The composition for a heat cycle system according to claim 1 , wherein the working fluid further contains 2,3,3,3-tetrafluoropropene. 11 . composition for a heat cycle system according to claim 10 , wherein the difference (Ra 1234yf -Ra 1123 ) between the interaction distance (Ra 1234yf ) between 2,3,3,3-tetrafluoropropene and the lubricating oil and the interaction distance (Ra 1123 ) is at least 0. 12 . A heat cycle system, which employs the composition for a heat cycle system as defined in claim 1 . 13 . The heat cycle system according to claim 12 , which is a refrigerating apparatus, an air-conditioning apparatus, a power generation system, a heat transport apparatus or a secondary cooling machine.
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Classifications
used as base material · CPC title
used as base material · CPC title
of alkylene oxides containing three carbon atoms only · CPC title
Refrigerators lubricants {or compressors lubricants} · CPC title
Containing Hydrofluorocarbons · CPC title
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- What does patent US2016333245A1 cover?
- To provide a composition for a heat cycle system having less influence over the ozone layer, having a low global warming potential and having excellent durability, and a heat cycle system. A composition for a heat cycle system comprising a working fluid containing trifluoroethylene and difluoromethane, and a lubricating oil, wherein the interaction distance (Ra 1123 ) between trifluoroeth…
- Who is the assignee on this patent?
- Asahi Glass Co Ltd
- 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 Nov 17 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).