Refrigerant cycle system with expansion energy recovery
US6543238B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 26, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Jun 26, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2600/17
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
In a refrigerant cycle system, refrigerant compressed in a first compressor is cooled and condensed in a radiator, and refrigerant from the radiator branches into main-flow refrigerant and supplementary-flow refrigerant. The main-flow refrigerant is decompressed in an expansion unit while expansion energy of the main-flow refrigerant is converted to mechanical energy. Thus, the enthalpy of the main-flow refrigerant is reduced along an isentropic curve. Therefore, even when the pressure within the evaporator increases, refrigerating effect is prevented from being greatly reduced in the refrigerant cycle system. Further, refrigerant flowing into the radiator is compressed using the converted mechanical energy. Thus, coefficient of performance of the refrigerant cycle system is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.