COOLING SYSTEM FOR A GAS TURBINE AND CORRESPONDING OPERATION METHOD

An operation method for a gas turbine including: compressing a working fluid by means of a compressor; feeding this compressed working fluid into at least one combustion chamber where it is overheated; expanding this overheated working fluid in at least one expansion turbine to produce energy; carry...

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Bibliographische Detailangaben
Hauptverfasser: DE PROSPERIS, ROBERTO, CIOFINI, MAURIZIO, ROSSIN, STEFANO
Format: Patent
Sprache:eng ; fre
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Beschreibung
Zusammenfassung:An operation method for a gas turbine including: compressing a working fluid by means of a compressor; feeding this compressed working fluid into at least one combustion chamber where it is overheated; expanding this overheated working fluid in at least one expansion turbine to produce energy; carrying out a first tapping of the compressed work fluid from the compressor to feed it into a first cavity of the turbine for cooling; carrying out a second tapping of the working fluid downstream from the first tapping to feed it into a second cavity of the turbine upstream from the first cavity, for cooling; and fluidly connecting the first tapping to the second tapping to selectively feed the first tapping by means of a part of the second tapping during partial load operation conditions to keep the temperature of the first cavity within the acceptable limits for the resistance of the materials.