Closed circuit vapour compression refrigeration system and a method for operating the system
US8578722B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2008 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Apr 5, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2700/2102
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method for operating a closed circuit vapour compression refrigeration system is disclosed. The system may operate with supercritical pressure on a high pressure side, and includes at least one compressor, at least one heat rejector, at least two in parallel connected heat absorbers, at least one variable expansion means up flow of each heat absorber and at least one control unit for controlling the variable expansion means, connected to a set of sensors. The flow rate of the refrigerant through each of the variable expansion means, is controlled by the control unit, coordinating the flow of refrigerant through each of the variable expansion means to maintain a control parameter within a set range. Any surplus charge resulting from the control is buffered on a low pressure side of the system. Furthermore a refrigeration system based on a closed vapour compression circuit is described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.