新型MgH2固态储氢装置放氢性能影响研究
Study on the influence of dehydrogenation performance in a new MgH2 solid hydrogen storage device
王为术 1王苗佳 1陈贤志 2王钦宝 1李龙 1高燕尚1
作者信息
- 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
- 折叠
摘要
为探究新型 MgH2 固态储氢装置放氢性能的影响因素,设计构建了一种新型 MgH2 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 0.4MPa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%.
Abstract
To investigate the factors influencing on the hydrogen release performance of the new Mg H2 solid-state hydrogen storage device,a new Mg H2 solid-state hydrogen storage device was de-signed and constructed in the study,and the influences of pressure,the inlet temperature of heat ex-changer 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 re-lease 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
MgH2固态储氢装置/影响因素/反应速率/数值研究Key words
Mg H2 solid hydrogen storage device/influencing factors/reaction rate/numerical study引用本文复制引用
基金项目
上海市2021年度科技支撑碳达峰碳中和专项项目(21DZ1208200)
出版年
2024
NETL
NSTL
万方数据