Transcritical Cooling Systems
OwnerAntonie Bonte, Jean Paul Leendersinventors
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Abstract
The present invention concerns a method for improving the efficiency of a transcritical cooling installation and the installation itself.
Claims15
A transcritically working cooling installation, comprising a compressor, an evaporator, an expansion device, one or more temperature transmitters, one or more pressure transmitter, solenoid valves, a capacity control for the compressors and a refrigerant, wherein
- the evaporator includes at least two circuits that are individually controlled by an electronic expansion valve (EEV), and
- further comprising a central processing unit (CPU) for processing the signals transmitted by the temperature transmitters and pressure transmitters into control signals for the electronic expansion valves, the solenoid valves and the capacity control of the compressor(s) in order to maintain an optimum coefficient of performance (COP) under both full load and partial load.
A method for controlling a transcritical cooling installation comprising a compressor, an evaporator comprising two or more circuits provided with electronic expansion valves, one or more temperature transmitters, one or more pressure transmitters, one or more valves, a capacity control of the compressor(s), a refrigerant and a central processing unit that are connected in such a way that the signals from the temperature transmitters and the pressure transmitters are processed into control signals for the electronic transmitters and the pressure transmitters are processed into control signals for the electronic expansion valves, the valves and the capacity control of the compressor, wherein
- a) using the electronic expansion valves to control the number of circuits in the evaporator, and
- b) the suction pressure of the compressor is controlled, such that an optimum coefficient of performance is maintained.
Dependencies are inferred from the claim text.