通气管通电内加热钙基热化学储热直接式固定床仿真研究

doi:10.19799/j.cnki.2095-4239.2025.1029

储能科学与技术

通气管通电内加热钙基热化学储热直接式固定床仿真研究

李玥¹(✉)，姜磊²，闫君^1,2(✉)，张叶龙³(✉)，Muddassir Ali⁴，Muzaffar Ali⁴

^1.上海交通大学中英国际低碳学院，上海 201100
^2.上海交通大学工程热物理研究所，上海 200240
^3.江苏双良锅炉有限公司，江苏 214400
^4.塔克西拉工程技术大学能源工程系，Taxila 47050 Pakistan

收稿日期:2025-11-13 修回日期:2025-12-03
通讯作者: 闫君;张叶龙 E-mail:445931980@sjtu.edu.cn;miraclebwh@sjtu.edu.cn;zyl1988219@163.com
作者简介:李玥（2001—），男，硕士研究生，热化学储热，445931980@sjtu.edu.cn 闫君（1984—），男，博士研究生，副教授，热化学储热，miraclebwh@sjtu.edu.cn 张叶龙（1988-），男，博士，高级工程师，研究方向为储热材料及系统，zyl1988219@163.com
基金资助:
上海市2023年度“科技创新行动计划” 自然科学基金面上项目（23ZR1434500）;上海市2023年度“科技创新行动计划”科技支撑碳达峰碳中和项目（23DZ1200901）;江苏省前沿技术研发计划（BF2024016）

Simulation Research on Direct-Fixed Bed of Calcium-Based Thermochemical Heat Storage with Electrically Heated Ventilation Tube

LI Yue¹(✉)，JIANG Lei²，YAN Jun^1,2(✉)，Zhang Yelong³(✉)，Ali Muddassir⁴，Ali Muzaffar⁴

^1. China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai 201100, China
^2. School of Mechanical and Power Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
^3. Jiangsu Shuangliang Boiler Co.,Ltd,Jiangsu 214400,China
^4. Energy Engineering Department, University of Engineering and Technology, Taxila 47050, Pakistan

Received:2025-11-13 Revised:2025-12-03
Contact: YAN Jun;Zhang Yelong E-mail:445931980@sjtu.edu.cn;miraclebwh@sjtu.edu.cn;zyl1988219@163.com

摘要/Abstract

摘要： 随着能源供给结构的持续优化，储能技术逐渐成为研究热点。直接式固定床反应器作为一种重要的热化学储热装置，因其结构特性存在能量输入效率低、储热效率受传质能力限制等问题，影响其工业化应用。为解决这些问题，设计了一种新型热化学储热直接式固定床。该装置将通气管道同时作为电加热元件进行内加热，提高了能量输入效率；通过多流道设计，有效提高传质性能。为评估装置储热效果，采用了三维数值模拟方法，研究气-固化学反应、多孔介质内的传热传质与流体流动等物理场分布规律，并分析了压力、孔隙率、加热功率等参数对储热过程的影响。结果表明，反应床具有高度对称性，且反应床内存在明显的温度梯度；水蒸气分压、孔隙率、放热功率都会从不同角度影响反应进度与平衡。本研究揭示了钙基热化学储热固定床内部多物理场耦合机理，阐明了不同工况相互作用效果，为固定床反应器设计提供理论依据。

关键词: 反应器, 数值模拟, 化学反应, 氢氧化钙, 电加热

Abstract: With the continuous optimization of the energy supply structure, energy storage technology has gradually become a research hotspot. Direct fixed-bed reactors, as an important thermochemical energy storage device, face challenges such as low energy input efficiency and heat storage efficiency constrained by mass transfer capacity, which limit their industrial application. To address these issues, a novel thermochemical energy storage direct fixed-bed reactor has been designed. This device integrates the ventilation pipeline as an electric heating element for internal heating, improving energy input efficiency. Additionally, the multi-channel design effectively enhances mass transfer performance. To evaluate the heat storage performance of the device, three-dimensional numerical simulation methods were employed to study the distribution of physical fields such as gas-solid chemical reactions, heat transfer, mass transfer, and fluid flow within the porous medium, and to analyze the effects of parameters such as pressure, porosity, and heating power on the heat storage process. The results indicate that the reactor bed exhibits high symmetry, with a distinct temperature gradient within the bed. Factors such as vapor pressure, porosity, and heat release power influence the reaction progress and equilibrium from different perspectives. This study reveals the coupling mechanism of multiple physical fields within the calcium-based thermochemical energy storage fixed bed, clarifying the interaction effects of various operational conditions, and providing a theoretical basis for the design of fixed-bed reactors.

Key words: reactors, numerical analysis, chemical reaction, Ca(OH)₂, electric heating

中图分类号:

李玥, 姜磊, 闫君, 张叶龙, Muddassir Ali, Muzaffar Ali. 通气管通电内加热钙基热化学储热直接式固定床仿真研究[J]. 储能科学与技术, doi: 10.19799/j.cnki.2095-4239.2025.1029.

LI Yue, JIANG Lei, YAN Jun, Zhang Yelong, Ali Muddassir, Ali Muzaffar. Simulation Research on Direct-Fixed Bed of Calcium-Based Thermochemical Heat Storage with Electrically Heated Ventilation Tube[J]. Energy Storage Science and Technology, doi: 10.19799/j.cnki.2095-4239.2025.1029.

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