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Recuperated versus single-recuperator re-compressed supercritical CO2 Brayton power cycles for DEMO fusion reactor based on dual coolant lithium lead blanket

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  • Linares, José Ignacio
  • Cantizano, Alexis
  • Arenas, Eva
  • Moratilla, Beatriz Yolanda
  • Martín-Palacios, Víctor
  • Batet, Lluis

Abstract

The EUROfusion research program is currently exploring alternative solutions for a future fusion power plant with DEMO (DEMOnstration Power Plant) prototype. One of the most important issues arising from a dual coolant lithium lead blanket-based reactor is the correct integration of the four thermal sources in order to achieve the highest electricity production. This study analyses the technical feasibility of supercritical CO2 Brayton power cycles. Starting with a classical re-compressed cycle, which is taken as the baseline case, two alternative proposals are investigated. On the one hand, a modified re-compressed layout with only one recuperator is studied, and is found to achieve the same electric efficiency as that of the baseline case (34.6%). On the other hand, an optimised recuperated layout is proposed, which achieves a 33.6% electric efficiency. A parametric study is conducted in order to optimise the heat exchanger size. When the re-compressed layout is optimised, a loss of efficiency (5%) is experienced. In the case of the recuperated layout optimisation the efficiency loss is reduced to 3%, achieving a reduction in heat exchanger size of 2/3.

Suggested Citation

  • Linares, José Ignacio & Cantizano, Alexis & Arenas, Eva & Moratilla, Beatriz Yolanda & Martín-Palacios, Víctor & Batet, Lluis, 2017. "Recuperated versus single-recuperator re-compressed supercritical CO2 Brayton power cycles for DEMO fusion reactor based on dual coolant lithium lead blanket," Energy, Elsevier, vol. 140(P1), pages 307-317.
    • Handle: RePEc:eee:energy:v:140:y:2017:i:p1:p:307-317
    DOI: 10.1016/j.energy.2017.08.105
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    Cited by:

    1. Syblík, Jan & Entler, Slavomír & Veselý, Ladislav & Štěpánek, Jan & Dostál, Václav, 2022. "Fusion DEMO sCO2 layout design with battery farm," Energy, Elsevier, vol. 249(C).
    2. Yu, Aofang & Xing, Lingli & Su, Wen & Liu, Pei, 2023. "State-of-the-art review on the CO2 combined power and cooling system: System configuration, modeling and performance," Renewable and Sustainable Energy Reviews, Elsevier, vol. 188(C).
    3. Fernández-Torrijos, M. & González-Gómez, P.A. & Sobrino, C. & Santana, D., 2021. "Economic and thermo-mechanical design of tubular sCO2 central-receivers," Renewable Energy, Elsevier, vol. 177(C), pages 1087-1101.
    4. Linares, José I. & Montes, María J. & Cantizano, Alexis & Sánchez, Consuelo, 2020. "A novel supercritical CO2 recompression Brayton power cycle for power tower concentrating solar plants," Applied Energy, Elsevier, vol. 263(C).
    5. Son, Seongmin & Lee, Jeong Ik, 2018. "Application of adjoint sensitivity analysis method to supercritical CO2 power cycle optimization," Energy, Elsevier, vol. 147(C), pages 1153-1164.
    6. Kravanja, Gregor & Zajc, Gašper & Knez, Željko & Škerget, Mojca & Marčič, Simon & Knez, Maša H., 2018. "Heat transfer performance of CO2, ethane and their azeotropic mixture under supercritical conditions," Energy, Elsevier, vol. 152(C), pages 190-201.

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