With the continuing drive to reduce power plant emissions including green house gases, coal fired power plants have been moving to higher ultra‐supercritical (USC) steam conditions in addition to advances in technology. GE Energy and Doosan Heavy Industries are designing the next generation USC power plant with a rating of 1000 MW to address the need for higher efficiency coal fired power plants. With inlet steam conditions of 260 bar and 610°C / 621°C (3770 psi and 1150℉ / 1180℉), the primary objective for the advanced technology USC 1000 MW steam turbine is high efficiency. To achieve this higher cycle efficiency, the design utilizes advanced steam turbine technology and system design, a longer last stage bucket design in addition to ultra supercritical steam conditions. Performance enhancing technology is being applied to turbine buckets, nozzles and seals. In addition to improvements to steam path components, performance gains are achieved by optimizing stationary components such as valves, inlets and exhausts using advanced CFD tools. This new USC project will illustrate the latest design and technology capabilities of GE Energy and Doosan Heavy Industries and will set the standard for future 1000 MW USC applications in Korea, as well as elsewhere in the world.
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