The article presents an overview of the compressed air energy storage gas turbines (CAES GT). The CAES GT works at low turbine inlet temperatures and is capable of fast start and loading 10 minutes to full load. It is characterized by high ramp rates up or down with minimum load as low as 10%, and flat heat rate for most of the load range. With exceptional low fuel input efficiency of 85%, the kW/hr equivalent Btu input to the compression cycle must be added, resulting in an overall efficiency of close to 55%, impressive versus a 300 MW GTCC plant that is required to load follow when integrating renewable energy source. The metamorphosis from that of a “peak shaving” unit to that of a grid support and renewable energy enabler is now complete. Advanced Reheat Gas Turbines such as the GT24/26 with higher operating temperatures offer further potential development for CAES.
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Looking Back 40 Years—The Reheat Gas Turbine Applied to Energy Storage
Septimus van der Linden
Septimus van der Linden
MemberASME, Past Chair IGTI Electric Power Committee
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Septimus van der Linden
MemberASME, Past Chair IGTI Electric Power Committee
Mechanical Engineering. Dec 2015, 137(12): 52-53 (2 pages)
Published Online: December 1, 2015
Citation
van der Linden, S. (December 1, 2015). "Looking Back 40 Years—The Reheat Gas Turbine Applied to Energy Storage." ASME. Mechanical Engineering. December 2015; 137(12): 52–53. https://doi.org/10.1115/1.2015-Dec-4
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