A supercritical steam bottoming cycle has been proposed as a performance enhancement option for gas turbine combined cycle power plants. The technology has been widely used in coal-fired steam turbine power plants since the 1950s and can be considered a mature technology. Its application to the gas-fired combined cycle systems presents unique design challenges due to the much lower gas temperatures (i.e., 650 °C at the gas turbine exhaust vis-à-vis 2000 °C in fossil fuel-fired steam boilers). Thus, the potential impact of the supercritical steam conditions is hampered to the point of economic infeasibility. This technical brief draws upon the second-law based exergy concept to rigorously quantify the performance entitlement of a supercritical high-pressure boiler section in a heat recovery steam generator utilizing the exhaust of a gas turbine to generate steam for power generation in a steam turbine.
Performance Entitlement of Supercritical Steam Bottoming Cycle
GE Power and Water,
Contributed by the Cycle Innovations Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received September 4, 2012; final manuscript received July 16, 2013; published online September 20, 2013. Assoc. Editor: Wolfgang Sanz.
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Can Gülen, S. (September 20, 2013). "Performance Entitlement of Supercritical Steam Bottoming Cycle." ASME. J. Eng. Gas Turbines Power. December 2013; 135(12): 124501. https://doi.org/10.1115/1.4025260
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