PERFORMANCE OF A MIXED GAS-STEAM CYCLE POWER-PLANT OBTAINED UPGRADINGAN AERO-DERIVATIVE GAS-TURBINE

The performance that can be achieved in a power plant obtained upgradi ng a typical aero-derivative gas turbine is analysed. The methodology is based on the off-design analysis of the gas generator (compressor a nd high pressure turbine) in the upgraded plant configuration and is a pplied to the design of a power plant based on the recuperative water injected cycle. The gas generator operating region and its boundary ha ve been evaluated for the upgraded plant configuration; an optimizatio n procedure has been established in order to show the maximum efficien cy and power output that can be achieved. (C) 1998 Elsevier Science Lt d. All rights reserved.