Ejector cycle system with critical refrigerant pressure
US6477857B2 · kind B2 · utility
52Cited by
11References
52Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 13, 2001 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Mar 13, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2700/21175
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
In an ejector cycle system using carbon dioxide as refrigerant, an ejector decompresses and expands refrigerant from a radiator to suck gas refrigerant evaporated in an evaporator, and converts an expansion energy to a pressure energy to increase a refrigerant pressure to be sucked into a compressor. Because refrigerant is decompressed and expanded in a super-critical area, a pressure difference during the decompression operation becomes larger, and a specific enthalpy difference becomes larger. Accordingly, energy converting efficiency in the ejector becomes higher, and efficiency of the ejector cycle system is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.