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AssigneeLinde Aktiengesellschaft
InventorsBruno Ziegler, Hermann Herzog, Udo Wagner
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In cryogenic applications a compression device circulates a fluid, such as helium, in a closed cooling circuit. The compression device includes at least one compressor, preferably a helical compressor, with a bypass valve connected in parallel thereto, which serves to decompress the compressed fluid. The suction pressure is measured with a pressure measuring device and is supplied to a control device, which controls the position of a powered valve spool of the compressor and also the position of the bypass valve. In order to achieve a high control performance with small bypass losses for load cases which are hard to predetermine, the positions of bypass valve and power valve spool are adjusted so that a fluid flow flows as a control reserve through the bypass valve and is on the order of a fraction of the total fluid flow.
A process for increasing the efficiency of a compressor having a suction line as an input, a pressure line as an output and a counter-pressure valve wherein the compressor compresses a fluid, the process comprising the steps of:
A process for increasing the efficiency of the compressor having a suction line as an input, a pressure line as an output and a counter-pressure valve wherein the compressor compresses a fluid, the process comprising the steps of:
Dependencies are inferred from the claim text.