Composition containing refrigerant, refrigeration method using said composition, method for operating refrigeration device, and refrigeration device
US11795359B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2021 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | Mar 3, 2042 |
Classification
- Technology area (CPC —)General
Abstract
The present disclosure provides a composition comprising a refrigerant that has characteristics of having a coefficient of performance (COP) and a refrigerating capacity equivalent to or higher than those of R404A, and having a sufficiently low GWP. More specifically, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), difluoromethane (HFC-32), and 2,3,3,3-tetrafluoropropene (HFO-1234yf), wherein the total concentration of the three components is 99.5% by mass or more, based on the entire refrigerant, and three components have a mass ratio that falls within a region surrounded by a figure passing through the following 4 points in a ternary composition diagram whose three vertices represent the three components:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.