High Efficiency Gas Turbine Power Generation Systems Using Aero-Derivative Gas Turbines

Abstract

This paper describes outline information on existing and advanced technologies regarding high efficiency gas turbine (GT) power plant using aero-derivative GT for the purpose of informing companies which are planning to provide their GT power generation plants in the near future as Independent Power Producers (IPP) or their own power generation facilities. To increase thermal efficiency in the power plant is essential not only for reducing fuel in combustors but also for reducing CO₂ in exhaust gas. Demands for and regulations regarding reduction of CO₂ will be strengthened year by year for environmental protection in the world. For this demand, the technologies has been progressing day by day. In addition, 60% efficiency power generation systems for the next century have been studied and are introduced here. The contents are as follows ;
1. Outline of Aero-derivative GT :
Introduction of the aero-derivative GT and its features such as being compact, light and highly efficient.
2. Progress in/of advanced technologies for increased efficiency of aero-derivative GT : Introduction of GT blade materials and cooling methods for blades.
3. System technologies for high efficiency of power generation :
Explanations of basic ideas for a highly efficient system such as the Regeneration System, Reheating System, Intercooling System.
4. Combined Cycle System :
Introduction of operational combined-cycle plants.
5. Mixed Gas-Steam Cycle Systems :
The following kinds of these systems are introduced.
·Steam-injected GT System (STIG)
·Flexible Electric Co-generation System (FLECS)
·Intercooled Steam-injected Cycle System (ISTIG)
·Humid Air Turbine Cycle System (HAT)