Operating a gas turbine with supplemental compressed air

F - Mech Eng,Light,Heat,Weapons – 02 – C

Patent

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F02C 3/30 (2006.01) F02C 6/06 (2006.01) F02C 6/16 (2006.01) F02C 7/08 (2006.01)

Patent

CA 2335558

A method is provided to ensure that a combustion turbine (12) may operate at maximum power at elevated ambient temperature and/or low air density. The method includes a combustion turbine mode in which air is supplied exclusively from a combustion turbine compressor (14), a compressed air augmentation mode in which additional air is supplied from an air storage (28), and an air storage charging mode in which air from a charging compressor (32) is supplied to the air storage (28). Alternatively, the air storage (28) may be eliminated and the charging compressor (32) sized for full supplemental air flow.

L'invention porte sur un procédé permettant à une turbine à gaz (12) de fonctionner à sa puissance maximale dans de l'air ambiant à température élevée et/ou ou de l'air de faible densité. Le procédé comporte: un mode de fonctionnement selon lequel l'air provient exclusivement de l'étage de compression (14) de la turbine; un mode mixte par adjonction d'air provenant d'un réservoir (28); et un mode mixte où un turbocompresseur (28) alimente le susdit réservoir. En variante le réservoir (28) peut être éliminé, le turbocompresseur (32) étant alors dimensionné pour fournir la totalité de l'air additionnel.

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