Heat transfer fluid replacing R-134a
US10035938B2 · kind B2 · utility
29Cited by
27References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 17, 2016 |
| Grant date | Jul 31, 2018 |
| Priority date | — |
| Expiry date | Aug 17, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/18
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat transfer method using ternary composition containing 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane and difluoromethane, as a heat transfer fluid in refrigeration systems, to replace R-134a. 1. A method of modifying a heat transfer system containing R-134a comprising removing R-134a and adding a composition comprising a refrigerant consisting essentially of: 70 to 88 wt % of 2,3,3,3-tetrafluoropropene; 4 to 16 wt % of difluoromethane; 8 to 14 wt % of 1,1-difluoroethane; and optionally, a stabilizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.