储能科学与技术

• XXXX •    

基于内热源螺旋翅片的CaO/Ca（OH） 2 热化学储能反应器传热强化数值研究

余银生1,2(), 邹星宇2, 吕凤1, 高永川1, 万大阳1, 韩利涛1   

  1. 1.洛阳瑞昌环境工程有限公司，洛阳 471003
    2.郑州大学 机械与动力工程学院，郑州 450001
  • 收稿日期:2025-07-31 修回日期:2025-08-18
  • 通讯作者: 余银生 E-mail:yinshengyu@zzu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(52306118);中国博士后面上项目(2025M776022)

Numerical investigation on heat transfer enhancement of CaO/Ca(OH)2 thermochemical energy storage reactor based on internal heat source spiral fins

Yinsheng YU1,2(), Xingyu ZOU2, Feng LV1, Yongchuan GAO1, Dayang WAN1, Litao HAN1   

  1. 1.Luoyang Ruichang Environmental Engineering Co. , Ltd. , Luoyang 471003
    2.School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China
  • Received:2025-07-31 Revised:2025-08-18
  • Contact: Yinsheng YU E-mail:yinshengyu@zzu.edu.cn

摘要：

为了提升热化学储能反应器内部传热传质能力，构建了CaO/Ca(OH)2热化学储能反应器内的传热传质与热化学反应的多场耦合数值计算模型，并且验证了模型的可靠性，在此基础上，为了改善传统热化学储能反应器的传热传质性能差的应用局限性，提出了在内热源热化学储能反应器中引入螺旋翅片的性能优化方法。验证了数值计算方法的有效性，深入研究了螺旋翅片的结构参数对热化学储能反应器储热性能的影响规律，研究发现螺旋翅片数量和环绕圈数对反应器内的温度分布和反应速率具有显著影响。随着螺距翅片数量和环绕圈数的增加，反应器轴向传热性能得到强化，螺旋翅片的引入增强了流体扰动，促进了传质过程，缩短了储热过程的时间，储热效率显著提升。得出了适于实际应用的翅片数和环绕圈数等螺旋翅片的参数。研究结果表明，当热化学储热反应器内的翅片数量为4、环绕圈数为1.5圈时，热化学储能反应器的性能最优，其热化学反应时间仅为355 min，与传统热化学储能反应器相比，热化学反应时间缩减幅度为85.1%，研究结果可以指导实际热化学反应器的结构设计与性能优化。

关键词: 热化学储热, 储能反应器, 螺旋翅片, 结构优化

Abstract:

In order to improve the heat and mass transfer capacity inside the thermochemical energy storage reactor, a multi field coupled numerical calculation model of heat and mass transfer and thermochemical reaction in CaO/Ca(OH)2 thermochemical energy storage reactor was constructed, and the reliability of the model was verified. Based on this, in order to improve the application limitations of poor heat and mass transfer performance of traditional thermochemical energy storage reactors, a performance optimization method of introducing spiral fins into the internal heat source thermochemical energy storage reactor was proposed. The effectiveness of the numerical calculation method was verified, and the influence of the structural parameters of the helical fins on the thermal storage performance of the thermochemical energy storage reactor was deeply studied. The parameters of the helical fins, such as the number of fins and the number of loops, suitable for practical applications were obtained. The research results show that when the number of fins in the thermochemical energy storage reactor is 4 and the number of loops is 1.5, the performance of the thermochemical energy storage reactor is optimal, with a thermochemical reaction time of only 355 minutes. Compared with traditional thermochemical energy storage reactors, the reduction in thermochemical reaction time is 85.1%. The research results can guide the structural design and performance optimization of actual thermochemical reactors.

Key words: Thermochemical heat storage, Energy storage reactor, Spiral fins, Structural optimization

中图分类号: