Refrigerant composition and refrigeration cycle apparatus including refrigerant composition
US10570323B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2019 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Mar 21, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/12
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Provided is a refrigerant composition as a mixed refrigerant containing refrigerant components of difluoromethane (HFC32), pentafluoroethane (HFC125), and hexafluoropropene (FO1216). The makeup of the refrigerant components in the mixed refrigerant is configured such that a global warming potential (GWP) is 750 or less, a vapor pressure at 25° C. is in a range of 1.4 to 1.8 MPa, and a flame retardant parameter Fmix represented by formula (1) below is 0.46 or more. Fmix=ΣiFixi (1) Here, Fmix indicates a flame retardant parameter of the refrigerant composition, Fi indicates a flame retardant parameter of each of the refrigerant components, and xi indicates a molar fraction of each of the refrigerant components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.