Hfo-1234ze, hfo-1225zc and hfo-1234yf containing compositions and processes for producing and using the compositions
US-2024352296-A1 · Oct 24, 2024 · US
Heat cycle working medium, and heat cycle system composition
US2025270431A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025270431-A1 |
| Application number | US-202519186763-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 23, 2025 |
| Priority date | Oct 27, 2022 |
| Publication date | Aug 28, 2025 |
| Grant date | — |
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Abstract
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Provided is a working medium for a heat cycle, including trifluoroethylene, 1,1-difluoroethane, and trifluoroiodomethane, in which a proportion of 1,1-difluoroethane with respect to a total of trifluoroethylene and 1,1-difluoroethane is 57.5% by mass or less, a proportion of trifluoroiodomethane with respect to a total of trifluoroethylene, 1,1-difluoroethane, and trifluoroiodomethane is 24.5% by mass or less, and a total proportion of trifluoroethylene, 1,1-difluoroethane, and trifluoroiodomethane with respect to the working medium for a heat cycle as a whole is 75.0% by mass or more.
First claim
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1 . A working medium for a heat cycle, comprising trifluoroethylene, 1,1-difluoroethane, and trifluoroiodomethane, wherein: a proportion of 1,1-difluoroethane with respect to a total of trifluoroethylene and 1,1-difluoroethane is 57.5% by mass or less, a proportion of trifluoroiodomethane with respect to a total of trifluoroethylene, 1,1-difluoroethane, and trifluoroiodomethane is 24.5% by mass or less, and a total proportion of trifluoroethylene, 1,1-difluoroethane, and trifluoroiodomethane with respect to the working medium for a heat cycle as a whole is 75.0% by mass or more. 2 . The working medium for a heat cycle according to claim 1 , wherein the proportion of 1,1-difluoroethane with respect to the total of trifluoroethylene and 1,1-difluoroethane is 23.0% by mass or less. 3 . The working medium for a heat cycle according to claim 1 , wherein the proportion of 1,1-difluoroethane with respect to the total of trifluoroethylene and 1,1-difluoroethane is 11.9% by mass or less. 4 . The working medium for a heat cycle according to claim 1 , wherein the proportion of trifluoroiodomethane with respect to the total of trifluoroethylene, 1,1-difluoroethane, and trifluoroiodomethane is 19.0% by mass or less. 5 . The working medium for a heat cycle according to claim 1 , wherein the working medium for a heat cycle has a global warming potential of 150 or less. 6 . The working medium for a heat cycle according to claim 1 , wherein the working medium for a heat cycle has a heat of combustion of 15.000 MJ/kg or less. 7 . The working medium for a heat cycle according to claim 1 , wherein a temperature gradient indicated by a difference between an evaporation start temperature and an evaporation completion temperature in an evaporator is 7.0° C. or less when the working medium for a heat cycle is applied to a standard refrigeration cycle with an evaporation temperature of 5° C. a condensing temperature of 40° C., a degree of supercooling (SC) of 5° C., a degree of superheat (SH) of 5° C., and a compressor efficiency of 0.7. 8 . A composition for a heat cycle system, comprising the working medium for a heat cycle according to claim 1 .
Assignees
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Classifications
Replacement mixtures · CPC title
All components of a mixture being fluoro compounds · CPC title
Unsaturated fluorinated hydrocarbons · CPC title
- C09K5/045Primary
containing only fluorine as halogen · CPC title
Halogenated hydrocarbons · CPC title
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- What does patent US2025270431A1 cover?
- Provided is a working medium for a heat cycle, including trifluoroethylene, 1,1-difluoroethane, and trifluoroiodomethane, in which a proportion of 1,1-difluoroethane with respect to a total of trifluoroethylene and 1,1-difluoroethane is 57.5% by mass or less, a proportion of trifluoroiodomethane with respect to a total of trifluoroethylene, 1,1-difluoroethane, and trifluoroiodomethane is 24.5% …
- Who is the assignee on this patent?
- Agc Inc
- 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 28 2025 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).