Leslie R. Southall

THE SIEMENS WESTINGHOUSE ADVANCED TURBINE SYSTEMS PROGRAM

This paper summarizes progress on Siemens Westinghouse’s Advanced Turbine Systems (ATS) Program. The ATS program, which is supported by U.S. Department of Energy, Office of Fossil Energy, has the ultimate objective of introducing into the utility market electricity generating systems capable of achieving greater than 60% LHV based net plant thermal efficiency, less than 10 parts per million NOx emissions, 10% electricity cost reduction and state-of-the-art reliability-availability-maintainability. Work has been in progress over the last few years on developing the required advanced technologies and designing the W501ATS gas turbine. The main thrust of the technology development effort was in the areas of compressor aerodynamics, turbine aerodynamics, heat transfer/cooling, sealing, combustion/emissions, single crystal casting, materials, and coating systems. These technologies were incorporated into the W501ATS engine design to ensure that the ATS Program goals will be achieved.Copyright

Status of Westinghouse’s Advanced Turbine Systems Program

This paper describes the status of Westinghouse’s Advanced Turbine Systems (ATS) Program. This program was undertaken in response to U.S. Department of Energy, Office of Fossil Energy requirements for greater than 60% net plant thermal efficiency, less than 10 parts per million NOx emissions, 10% reduction in the cost of electricity and state-of-the-art Reliability-Availability-Maintainability (RAM) levels (Ali and Zeh, 1996). An extensive four-year program was undertaken to develop the required technologies and design an advanced gas turbine. The gas turbine design and most of the technology verification programs have been completed. The 501 ATS engine employed innovative aerodynamic, combustor, cooling, sealing, and mechanical designs, as well as advanced materials, coatings, and casting technologies to achieve the program goals. The incorporation of the 501 ATS gas turbine in a world-class combined cycle plant will result in more than 420 MW net output power and greater than 60% net LHV based plant thermal efficiency.Copyright

Update on Westinghouse’s Advanced Turbine Systems Program

This paper describes progress on Westinghouse’s Advanced Turbine Systems (ATS) Program. The ATS Program objective is to develop new utility gas turbines with greater than 60% net plant thermal efficiency, NOx emissions limited to less than 10 parts per million, reduced cost of electricity generation by 10% over current systems, and reliability-availability-maintainability equivalent to modern power generation systems. The Westinghouse ATS plant is a highly efficient combined cycle, based on an advanced gas turbine incorporating novel design concepts and enhancements of existing technologies. The 501 ATS engine is a fuel-flexible design operating on natural gas with provisions for future conversion to coal or biomass fuels. It is based on proven concepts employed in Westinghouse 501F and 501G engines. To achieve the required performance and reliability, the engine utilizes closed-loop steam cooling, advanced materials and coatings, and enhanced component performance. To minimize NOx emissions, an ultra-low NOx combustion system was incorporated. To ensure success, the necessary technologies were developed and integrated into the ATS engine design.Copyright