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Potentials of Thermal Energy Storage Integrated into Steam Power Plants

Author

Listed:
  • Michael Krüger

    (German Aerospace Center (DLR), Institute of Engineering Thermodynamics, 70569 Stuttgart, Germany)

  • Selman Muslubas

    (Chair of Environmental Process Engineering and Plant Design, University of Duisburg-Essen, 45141 Essen, Germany)

  • Thomas Loeper

    (Siemens AG, Power and Gas Division, 91058 Erlangen, Germany)

  • Freerk Klasing

    (German Aerospace Center (DLR), Institute of Engineering Thermodynamics, 51147 Köln, Germany)

  • Philipp Knödler

    (German Aerospace Center (DLR), Institute of Engineering Thermodynamics, 70569 Stuttgart, Germany)

  • Christian Mielke

    (Siemens AG, Power and Gas Division, 91058 Erlangen, Germany)

Abstract

For conventional power plants, the integration of thermal energy storage opens up a promising opportunity to meet future technical requirements in terms of flexibility while at the same time improving cost-effectiveness. In the FLEXI- TES joint project, the flexibilization of coal-fired steam power plants by integrating thermal energy storage (TES) into the power plant process is being investigated. In the concept phase at the beginning of the research project, various storage integration concepts were developed and evaluated. Finally, three lead concepts with different storage technologies and integration points in the power plant were identified. By means of stationary system simulations, the changes of net power output during charging and discharging as well as different storage efficiencies were calculated. Depending on the concept and the operating strategy, a reduction of the minimum load by up to 4% of the net capacity during charging and a load increase by up to 5% of the net capacity during discharging are possible. Storage efficiencies of up to 80% can be achieved.

Suggested Citation

  • Michael Krüger & Selman Muslubas & Thomas Loeper & Freerk Klasing & Philipp Knödler & Christian Mielke, 2020. "Potentials of Thermal Energy Storage Integrated into Steam Power Plants," Energies, MDPI, vol. 13(9), pages 1-13, May.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:9:p:2226-:d:353658
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    References listed on IDEAS

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    1. Herrmann, Ulf & Kelly, Bruce & Price, Henry, 2004. "Two-tank molten salt storage for parabolic trough solar power plants," Energy, Elsevier, vol. 29(5), pages 883-893.
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    2. Wang, Zhenpu & Xu, Jing & Ma, Suxia & Zhao, Guanjia & Wang, Jianfei & Gu, Yujiong, 2025. "Comparative investigation on heat pump solutions for peak shaving and heat-power decoupling in combined heat and power plants," Renewable and Sustainable Energy Reviews, Elsevier, vol. 216(C).
    3. Zhang, Qijun & Dong, Jianning & Chen, Heng & Feng, Fuyuan & Xu, Gang & Wang, Xiuyan & Liu, Tong, 2024. "Dynamic characteristics and economic analysis of a coal-fired power plant integrated with molten salt thermal energy storage for improving peaking capacity," Energy, Elsevier, vol. 290(C).
    4. Michael Krüger & Selman Muslubas & Eren Çam & Daniel Lehmann & Sabine Polenz & Volker Dreißigacker & Freerk Klasing & Philipp Knödler, 2022. "Technical Development and Economic Evaluation of the Integration of Thermal Energy Storage in Steam Power Plants," Energies, MDPI, vol. 15(9), pages 1-34, May.
    5. Ma, Tingshan & Li, Zhengkuan & Lv, Kai & Chang, Dongfeng & Hu, Wenshuai & Zou, Ying, 2024. "Design and performance analysis of deep peak shaving scheme for thermal power units based on high-temperature molten salt heat storage system," Energy, Elsevier, vol. 288(C).
    6. Eleni Agelidou & Hannah Seliger-Ost & Martin Henke & Volker Dreißigacker & Thomas Krummrein & Peter Kutne, 2022. "The Heat-Storing Micro Gas Turbine—Process Analysis and Experimental Investigation of Effects on Combustion," Energies, MDPI, vol. 15(17), pages 1-24, August.
    7. Miao, Lin & Liu, Ming & Zhang, Kezhen & Zhao, Yongliang & Yan, Junjie, 2023. "Energy, exergy, and economic analyses on coal-fired power plants integrated with the power-to-heat thermal energy storage system," Energy, Elsevier, vol. 284(C).
    8. Yuan Han & Chao Wang & Kairui Liu & Linxi Zhang & Yujie Zhu & Yankai Wang & Limin Wang & Defu Che, 2024. "Simulation of Dynamic Characteristics of Supercritical Boiler Based on Coupling Model of Combustion and Hydrodynamics," Energies, MDPI, vol. 17(21), pages 1-17, October.
    9. Lv, Shengnan & Lu, Yuanwei & Wei, Haijiao, 2025. "Research on operational flexibility of 600 MW subcritical coal-fired power unit by coupling three-tank molten salt thermal energy storage system," Energy, Elsevier, vol. 322(C).

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