Abstract
The development and implementation of the energy-saving technologies is one of the challenges facing the domestic industrial enterprises; when it comes to the compressor equipment, a large-scale implementation of the variable capacity screw compressors into the manufacturing processes has become the first proper step concerning the solution of energy-saving questions. Nowadays the spool efficiency controlled oil-flooded screw compressors are widely used for the fuel gas supply into the gas turbine unit (GTU). This paper presents the existing types of the spool configurations whereby the screw compressors control is realized as well as the new spool design construction that allows to implement the gas bypass from the higher pressure paired chamber to the low pressure one is offered. Gas is not bypassed into the suction chamber, that in turn saves the supplied power.
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