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Thermochemical energy storage (TES) technology possesses the advantages of high energy storage density and low heat loss, and thus has significant development potential. The Ca(OH)2/CaO/H2O hydrolysis-hydration system is a widely used high-temperature TES system with an energy storage density of up to 104.4 kJ/mol. To optimize the use of this system, a novel gravity-driven moving bed reactor was proposed in this chapter. The corresponding quasi-three-dimensional CFD-DEM (Discrete Element Method)-CR (Chemical Reaction) numerical model was then established and validated. Based on this model, the effects of heated gas flow rate, heated gas temperature, equivalent flow runner height, and particle filling flow on the performance of the moving bed reactor were investigated. The degree of significance of these influences was also quantified. This work provides valuable insights for the engineering design of moving bed reactors.

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Numerical Investigation of a Novel Gravity-Driven Moving Bed Reactor for Thermochemical Energy Storage

  • 章节

  • 发表日期：

    2025年

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  • Cang Tong,
  • Min Xu,
  • Jianyi Chen,
  • Caifeng Huang,
  • Xiulan Huai

摘要

Thermochemical energy storage (TES) technology possesses the advantages of high energy storage density and low heat loss, and thus has significant development potential. The Ca(OH)2/CaO/H2O hydrolysis-hydration system is a widely used high-temperature TES system with an energy storage density of up to 104.4 kJ/mol. To optimize the use of this system, a novel gravity-driven moving bed reactor was proposed in this chapter. The corresponding quasi-three-dimensional CFD-DEM (Discrete Element Method)-CR (Chemical Reaction) numerical model was then established and validated. Based on this model, the effects of heated gas flow rate, heated gas temperature, equivalent flow runner height, and particle filling flow on the performance of the moving bed reactor were investigated. The degree of significance of these influences was also quantified. This work provides valuable insights for the engineering design of moving bed reactors.