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Siemens Energy, Inc. will develop a metallic additive manufacturing (AM) and 3D oxide-oxide ceramic matrix composites (3D Ox-Ox CMC)-based design for advanced vanes. The design will eliminate the need for film cooling and significantly reduce overall cooling requirements. The use of AM-3D Ox-Ox CMC components in all relevant hot turbine stages can reduce total cooling and leakage flow of turbine components by at least 50 percent. This reduction translates to an increase of approximately 1.5 percent in combined cycle efficiency. The elimination of film cooling and overall reduction in cooling air usage enabled by the AM-3D CMC advanced vane is potentially a significant step towards reaching a goal of 65 percent combined cycle efficiency.
The NETL Advanced Turbines Program is focused on the research, development, and demonstration (RD&D) of revolutionary, near-zero-emission advanced turbines technologies intended to enable cost-competitive, fossil-based power generation with lower emissions including CO2. Projects within the Advanced Turbines Program are focused on addressing significant scientific and engineering challenges associated with meeting increasing demands on turbine technology when using hydrogen fuels derived from coal as well as pursuing new and promising turbine technologies and turbine-based power systems. Program and project emphasis is on understanding the underlying factors affecting combustion, aerodynamics/heat transfer, and materials for advanced turbines and turbine-based power cycles.