摘要
金属氧化物储热可与太阳能空气布雷顿发电系统结合,实现高质量发电和快速调峰调频。为满足空气布雷顿发电系统对储热装置的运行调节需求,构建了储热装置耦合流动换热和化学反应的数值计算模型,模拟与实验结果最大相对误差不超过6.2%。基于数值模型对一台锰基金属氧化物储热装置进行数值模拟,结果表明,储热装置等温线和等反应速率线均呈抛物线型,不同位置的温度曲线在还原和氧化反应温区分别出现“平台”区域,区域高度和长度受升降温速率影响。相较于纯显热储热部分,热化学储热装置的总储热容量提升了61.4%。研究结果可为太阳能空气布雷顿发电系统中金属氧化物储热装置设计和运行调控提供参考。
Heat storage based on metal oxide can be combined with solar air Brayton power generation system,which can achieve high quality power generation and fast peak and frequency regulation.In order to meet the operational regulation requirements of the air Brayton power generation system for the heat storage device,a numerical model of the heat storage device which couples flow and heat exchange with chemical reaction is constructed,and the maximum relative error between simulation and experimental results does not exceed 6.2%.Based on the numerical model,the numerical simulation of a manganese metal oxide heat storage device is carried out,and the results show that the isotherm line and the iso-reaction rate line are both parabolic,the temperature curves at different positions display"plateau"areas in the reduction and oxidation reaction temperature range,and the height and length of the areas are affected by the rate of temperature rise and fall.Compared to the pure sensible heat storage section,the total heat storage capacity of the thermochemical heat storage device has increased by 61.4%.The results of the study can provide a reference for the design and operation regulation of metal oxide heat storage devices in solar air Brayton power systems.
作者
甘晟池
祝培旺
刘意强
吕洪坤
侯成龙
来振亚
罗仁令
肖刚
GAN Shengchi;ZHU Peiwang;LIU Yiqiang;LYU Hongkun;HOU Chenglong;LAI Zhenya;LUO Renling;XIAO Gang(Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang(Zhejiang University),Hangzhou 310027,Zhejiang Province,China;State Grid Zhejiang Electric Power Co.,Ltd.,Electric Power Research Institute,Hangzhou 310014,Zhejiang Province,China)
出处
《中国电机工程学报》
北大核心
2025年第2期626-637,I0019,共13页
PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING
基金
国家电网有限公司科技项目(5108-202218280A-2-444-XG)。
关键词
太阳能热利用
化学储热
储热装置
金属氧化物
数值模拟
solar thermal utilization
chemical heat storage
heat storage device
metal oxide
numerical simulation
