INTRODUCTION The Externally Fired Combined Cycle (EFCC) is an advanced coal-fired power generation concept with a potential for higher thermal efficiency and lower cost than conventional coal-based systems. 1 The concept incorporates efficient gas turbine combined cycle technology for use with coal. Unlike "direct fired" combined cycles, the EFCC does not require any special fuel preparation. T...

A wave rotor may be used as a pressure-gain combustor, effecting wave compression and expansion, and intermittent confined combustion, to enhance gas-turbine engine performance. It will be more compact than an equivalent pressure-exchange wave-rotor system, but will have similar thermodynamic and mechanical characteristics. Because the allowable turbine blade temperature limits overall fuel-air...

Gas turbines are being utilized in a variety of applications (electric power production, jet engines, etc.) Modern power turbines have the highest operating efficiencies and turn out the fewest pollutants among major combustion energy converting devices. The power generation industry is faced with increasingly stringent emissions requirements for ozone precursors, such as nitrogen oxides and ca...

A technology program was started in 1994 within the framework of the German Aeronautics Research Program to develop axial staged combustor technology up to a core engine demonstrator. The objective was to demonstrate a 50% NOx reduction against the ICAO CAEP II limit without any compromise on the CO, UHC and smoke emission level compared to the latest single annular combustor technology. All ot...

Program is a joint effort between government and industry to develop a new generation of coal utilimtion processes. In 1986, the Ohio Power Company, a subsidiary of the American Electric Power Service Corporation (AEP), was awarded cofunding through the CCT program for the Tidd Pressurized Fluidixed Bed Combustor (PFBC) Demonstration Plant located in Brilliant, Ohio. The Tidd PFBC unit began op...