Abstract:

Establish a metal hydride reactor and test platform, and obtain the corresponding internal temperature and hydrogen absorption/desorption flow data of the reactor under different water bath temperatures, hydrogen release flow rates, and reactor structures (square, honeycomb, and no barriers) through experimental tests to determine The temperature field distribution trends and rules of different reactor internal structures are analyzed. The results show that the square structure reactor has the fastest internal temperature change rate and the best heat exchange effect. The comprehensive performance of the square structure reactor under different hydrogen absorption pressures and hydrogen release flow rates was further studied. The results show that when the inlet pressure is 2.0 MPa to 3.0 MPa, the hydrogen absorption amount and hydrogen absorption rate of the alloy material can be significantly increased; when the hydrogen release flow rate is less than 3.2 L/min, more than 85% of hydrogen can be released. The research results can provide technical guidance for modular and systematic design.

Key words: Metal hydride hydrogen storage, Heat exchange fins, Hydrogen storage structure, Temperature change, Flow change

摘要：

建立金属氢化物反应器及测试平台，通过实验测试得到不同水浴温度、放氢流量及反应器结构（方形、蜂窝结构及无隔层）下反应器内部温度和吸/放氢流量数据，确定了不同结构反应器的温度场分布趋势和规律。结果表明，方形结构反应器内部温度变化速率最快，换热效果最好。进一步研究了方形结构反应器在不同吸氢压力和放氢速率下的综合性能。结果表明，当进气压力为2.0～3.0 MPa时，能显著提高合金材料的吸氢量及吸氢速率；当放氢流量小于3.2 L/min时，可放出85%以上的氢气。研究结果可为模块化和系统化设计提供技术指导。

关键词: 金属氢化物储氢, 换热翅片, 储氢结构, 温度变化, 流量变化