新型MgH_(2)固态储氢装置放氢性能影响研究  

Study on the influence of dehydrogenation performance in a new MgH_(2)solid hydrogen storage device

作　　者：王为术[1] 王苗佳 陈贤志 王钦宝 李龙 高燕尚 WANG Weishu;WANG Miaojia;CHEN Xianzhi;WANG Qinbao;LI Long;GAO Yanshang(Institute of Energy and Power Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450045,China;Shanghai Magnesium Source Power Technology Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]华北水利水电大学能源与动力工程学院,河南郑州450045 [2]上海镁源动力科技有限公司,上海200120

出　　处：《中原工学院学报》2024年第3期49-56,共8页Journal of Zhongyuan University of Technology

摘　　要：为探究新型MgH_(2)固态储氢装置放氢性能的影响因素,设计构建了一种新型MgH_(2)固态储氢装置,数值研究了压力、换热流体入口温度、换热流体流速以及有无外环形换热流体层对放氢反应速率的影响。研究结果表明,当压力从0.4 MPa增加至0.6 MPa,放氢反应速率随之降低,但放氢反应完成时间几近一致;当换热流体入口温度从550 K提升至650 K,放氢反应速率迅速上升。与换热流体入口温度600 K相比,换热流体入口温度650 K下的放氢反应完成时间缩短50%;当换热流体流速从1 m/s增加至2 m/s时,放氢反应速率随之增大;增加外环形换热流体层可以大大缩短放氢反应所需时间。与未添加外环形流体层的换热装置的放氢反应时间相比,添加外环形流体层的装置的放氢反应时间可缩短31.25%。To investigate the factors influencing on the hydrogen release performance of the new MgH_(2)solid-state hydrogen storage device,a new MgH_(2)solid-state hydrogen storage device was designed and constructed in the study,and the influences of pressure,the inlet temperature of heat exchanger fluid,the flow rate of heat exchanger fluid,and the presence or absence of the outer annular heat exchanger layer on the rate of the hydrogen release reaction were numerically investigated.The results indicated that the dehydrogenation reaction rate decreased when the pressure increased from 0.4 MPa to 0.6 MPa,but the dehydrogenation reaction completion time remained almost unchanged.When the inlet temperature of the heat transfer fluid increased from 550 K to 650 K,the hydrogen release reaction rate increased rapidly.Compared with the inlet temperature of the heat transfer fluid at 600 K,the hydrogen release reaction time at the inlet temperature of the heat transfer fluid at 650 K was shortened to about 50%.When the flow rate of the heat transfer fluid increased from 1 m/s to 2 m/s,the hydrogen desorption reaction rate of the reactor increased,but the total reaction time did not change significantly.Increasing the outer annular heat exchange fluid layer could greatly shorten the time required for hydrogen desorption.Compared with the hydrogen desorption reaction time of the reactor without the outer annular fluid layer,the hydrogen desorption reaction time of the reactor with the outer annular fluid layer could be shortened by nearly 31.25%.

关 键 词：MgH_(2)固态储氢装置 影响因素 反应速率 数值研究 

分 类 号：TK02[动力工程及工程热物理]