金属氢化物储氢反应器内反应死区优化对储氢性能影响的数值模拟  

Numerical Simulation on Effect of Reaction Dead Zone Optimization on Hydrogen Storage Performance in Metal Hydride Hydrogen Storage Reactor

作　　者：陈泽祺 闫素英 张伟 杨利冬 周少斌 高明[1] CHEN Zeqi;YAN Suying;ZHANG Wei;YANG Lidong;ZHOU Shaobin;GAO Ming(Shandong Engineering Research Centre for High-Efficiency Energy Storage and Hydrogen Energy Utilization,School of Nuclear Science,Energy and Power,Shandong University,Jinan 250061,Shandong Province,China;Inner Mongolia Guolong Energy Management Co.,Ltd.,Hohhot 010000,Inner Mongolia,China)

机构地区：[1]山东大学核科学与能源动力学院,高效储能及氢能利用山东省工程研究中心,山东济南250061 [2]内蒙古国龙能源管理有限责任公司,内蒙古呼和浩特010000

出　　处：《动力工程学报》2025年第3期474-480,共7页Journal of Chinese Society of Power Engineering

基　　金：山东省自然科学基金资助项目(ZR2023ME025);内蒙古自治区中央引导地方科技发展资金资助项目(2024ZY0125)。

摘　　要：针对金属氢化物储氢的热效应问题,建立了储氢反应器的二维仿真模型,研究了在反应死区内增设换热管束对储氢性能的影响,获得了不同尺寸反应器死区的管束优化布置方式。结果表明:在半径为45 mm的反应器中增设15根换热管后,反应死区内金属氢化物温度由339 K降至297.6~311.4 K,反应分率由0.2~0.5升至0.89以上;当反应器半径分别为35、45和55 mm时,反应死区的最优管数分别为6、15和18,与未优化前相比,储氢时间分别缩短了8.53%、9.95%和9.68%,而换热管束体积分数仅增加了0.49%、0.74%和0.60%,且优化后不同尺寸反应器储氢时间的最大变化幅度小于2.43%,因此增设管束可有效消除反应死区对储氢性能的影响。In order to solve the problem of the thermal effect of hydrogen storage in metal hydride,a two-dimensional simulation model of the hydrogen storage reactor was developed,and the influence of adding heat exchange tube bundles in the reaction dead zone on the hydrogen storage performance was studied.The optimal arrangement of the tube bundles in the dead zone of the reactor with different sizes was obtained.Results show that when 15 tubes are added in the dead zone of 45 mm radius reactor,the temperature of the metal hydride in the dead zone decreases from^(3)39 K to 297.6-311.4 K,and the reaction fraction increases from 0.2-0.5 to above 0.89.When the reactor radius is 35,45 and 55 mm,the optimal number of dead zone tubes is 6,15 and 18,respectively,which results in a reduction of hydrogen storage time by 8.53%,9.95%and 9.68%compared with that before optimization.The volume fraction of the tube bundles only increases by 0.49%,0.74%and 0.60%,respectively,and the maximal variation in hydrogen storage time across reactors of varying sizes is less than 2.43%after optimization.Therefore,the addition of tubes can effectively eliminate the effect of the dead zone on the hydrogen storage.

关 键 词：金属氢化物 储氢性能 换热管束优化 数值模拟 

分 类 号：TK02[动力工程及工程热物理]