水冷翅片式固态金属储氢系统传热传质过程模拟与结构优化  

Simulation and Structural Optimization of Heat and Mass Transfer Processes in Water-Cooled Finned Solid Metal Hydrogen Storage Systems

作　　者：刘振安 柴牧 高翎玮 何宽芳 吴岱丰 蒋勉 张静静 LIU Zhenan;CHAI Mu;GAO Lingwei;HE Kuanfang;WU Daifeng;JIANG Mian;ZHANG Jingjing(School of Mechatronic Engineering and Automation,Foshan University,Foshan 528225,Guangdong,China;Institute of Resource Utilization and Rare Earth Development,Guangdong Academy of Sciences,Guangzhou 510650,China)

机构地区：[1]佛山科学技术学院机电工程与自动化学院,广东佛山528225 [2]广东省科学院资源利用与稀土开发研究所,广州510650

出　　处：《新能源进展》2024年第6期704-716,共13页Advances in New and Renewable Energy

基　　金：广东省基础与应用基础研究项目(2020B1515120006,2021A1515010712);国家自然科学基金项目(52005106)。

摘　　要：为研究固态金属储氢系统换热性能对系统吸氢效率的影响,搭建了以小型固态金属储氢罐为核心的实验平台并建立了储氢罐体数值仿真模型,通过实验验证了所建立的数值模型可真实反映AB5型储氢合金的吸氢反应过程。同时,针对储氢系统存在的传热缓慢、温降不均及吸氢效率低等问题,对AB5型固态储氢系统进行吸氢反应传热传质过程模拟,并对其换热结构进行优化。结果表明:系统反应区的换热效率对吸氢效率有重要影响,优化后的换热结构可快速营造吸氢反应所需的低温环境,并对系统内部吸氢反应进行初步控制,使储氢合金达到温降与吸氢均匀的良好状态,有效规避了因储氢合金导热系数低、换热缓慢造成的传热中心长期存在高温状态及系统吸氢效率低等问题,从而提高系统整体温降效率和吸氢效率。In order to study the influence of the heat transfer performance of a solid metal hydrogen storage system on the hydrogen absorption efficiency of the system,an experimental platform with a small solid metal hydrogen storage tank as the core was constructed and a numerical simulation model of the tank was established,and it was verified through experiments that the established numerical model could truly reflect the hydrogen absorption reaction process of the AB5 hydrogen storage alloy.At the same time,to address the problems of the hydrogen storage system,such as the slow heat transfer,the uneven temperature drop,and the low efficiency of hydrogen absorption,the heat transfer process was simulated,and its heat transfer structure was optimized for the AB5 solid-state hydrogen storage system.The results show that the heat transfer efficiency of the reaction zone of the system has an important influence on the hydrogen absorption efficiency of the system.The optimized heat transfer structure can quickly construct the low-temperature environment required for the hydrogen absorption reaction of the system and initially control the hydrogen absorption reaction of the system so that the hydrogen storage alloy achieves a good state of uniform temperature drop and uniform hydrogen absorption,avoiding the problems of long term high temperature in the heat transfer center and low hydrogen absorption efficiency caused by the low thermal conductivity and slow heat transfer of the hydrogen storage alloy,and effectively improves the system's overall temperature drop and hydrogen absorption efficiency.

关 键 词：固态金属储氢 吸氢 传热传质 结构优化 数值仿真 

分 类 号：TK91[动力工程及工程热物理]