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Thermodynamic Analysis of Nuclear Power Plants with External Steam Superheating

Author

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  • Vladimir Kindra

    (Department of Innovative Technologies for High-Tech Industries, National Research University “Moscow Power Engineering Institute”, 111250 Moscow, Russia)

  • Mikhail Ostrovsky

    (Department of Innovative Technologies for High-Tech Industries, National Research University “Moscow Power Engineering Institute”, 111250 Moscow, Russia)

  • Igor Maksimov

    (Department of Innovative Technologies for High-Tech Industries, National Research University “Moscow Power Engineering Institute”, 111250 Moscow, Russia)

  • Roman Zuikin

    (Department of Innovative Technologies for High-Tech Industries, National Research University “Moscow Power Engineering Institute”, 111250 Moscow, Russia)

  • Nikolay Rogalev

    (Department of Thermal Power Plants, National Research University “Moscow Power Engineering Institute”, 111250 Moscow, Russia)

Abstract

Increasing the efficiency and capacity of nuclear power units is a promising direction for the development of power generation systems. Unlike thermal power plants, nuclear power plants operate at relatively low temperatures of the steam working fluid. Due to this, the thermodynamic efficiency of such schemes remains relatively low today. The temperature of steam and the efficiency of nuclear power units can be increased by integrating external superheating of the working fluid into the schemes of steam turbine plants. This paper presents the results of a thermodynamic analysis of thermal schemes of NPPs integrated with hydrocarbon-fueled plants. Schemes with a remote combustion chamber, a boiler unit and a gas turbine plant are considered. It has been established that superheating fresh steam after the steam generator is an effective superheating solution due to the utilization of heat from the exhaust gases of the GTU using an afterburner. Furthermore, there is a partial replacement of high- and low-pressure heaters in the regeneration system, with gas heaters for condensate and steam superheating after the steam generator for water-cooled and liquid-metal reactor types. An increase in the net efficiency of the hybrid NPP is observed by 8.49 and 5.11%, respectively, while the net electric power increases by 93.3 and 76.7%.

Suggested Citation

  • Vladimir Kindra & Mikhail Ostrovsky & Igor Maksimov & Roman Zuikin & Nikolay Rogalev, 2025. "Thermodynamic Analysis of Nuclear Power Plants with External Steam Superheating," Energies, MDPI, vol. 18(9), pages 1-22, April.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:9:p:2317-:d:1647339
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    References listed on IDEAS

    as
    1. Vladimir Kindra & Igor Maksimov & Olga Zlyvko & Andrey Rogalev & Nikolay Rogalev, 2024. "Thermodynamic Analysis and Comparison of Power Cycles for Small Modular Reactors," Energies, MDPI, vol. 17(7), pages 1-22, March.
    2. Wibisono, Andhika Feri & Shwageraus, Eugene, 2016. "Thermodynamic performance of Pressurized Water Reactor power conversion cycle combined with fossil-fuel superheater," Energy, Elsevier, vol. 117(P1), pages 190-197.
    3. Vladimir Kindra & Igor Maksimov & Daniil Patorkin & Andrey Rogalev & Nikolay Rogalev, 2024. "Thermodynamic Analysis and Optimization of Binary CO 2 -Organic Rankine Power Cycles for Small Modular Reactors," Energies, MDPI, vol. 17(10), pages 1-18, May.
    Full references (including those not matched with items on IDEAS)

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