We systematically determine the maximally efficient manner of using water and air in a single-cycle steady-flow combustion gas turbine power plant. In doing so, we identify the upper limit to exergy efficiency for dry and wet gas turbine engines through architectures that employ regenerative work, heat, and matter transfers using imperfect practical devices. For existing device technology, the derived optimal architectures can theoretically achieve exergy efficiency above 65% without employing a bottoming cycle. This surpasses known efficiencies for both wet and combined cycles. We also show that when optimally used, nonreactive matter transfers, like water, provide an alternative, but not superior, thermal regeneration strategy to direct heat regeneration.
Optimal Architectures for Dry and Wet Gas-Turbine Engines
Contributed by the Aircraft Engine Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 21, 2017; final manuscript received November 5, 2017; published online June 15, 2018. Assoc. Editor: Klaus Dobbeling.
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Zarin Pass, R., Ramakrishnan, S., and Edwards, C. (June 15, 2018). "Optimal Architectures for Dry and Wet Gas-Turbine Engines." ASME. J. Eng. Gas Turbines Power. September 2018; 140(9): 091202. doi: https://doi.org/10.1115/1.4038794
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