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设计了一种新型板式金属氢化物反应床,其中包括反应床的传热特性测试装置,测试了不同合金体积分数、充填气体以及气体压力和循环次数等条件下,金属氢化物床体在厚度方向的有效热导率,并分析了其对床体有效热导率的影响.结果表明:板式反应床具有良好的传热性能,床体有效热导率在合金未活化前已达7.5 W/(m.K);经合金活化后,在氢气压力0.1~3.5 MPa时,其有效热导率随氢气压力的变化近似呈线性关系;反应床传热性能仅在初始工作阶段中快速恶化,数次循环后即可趋于稳定.
A new type of plate metal hydride reaction bed was designed, including the heat transfer characteristics of the reaction bed test device, the test of different alloy volume fraction, filling gas and gas pressure and the number of cycles and other conditions, the metal hydride bed in the thickness direction The effective thermal conductivity of the bed is analyzed and its effect on the effective thermal conductivity of the bed is analyzed.The results show that the plate bed has good heat transfer performance and the effective thermal conductivity of the bed has reached 7.5 W / mK). After the activation of the alloy, the effective thermal conductivity changes linearly with the change of hydrogen pressure when the hydrogen pressure is 0.1-3.5 MPa. The heat transfer performance of the reaction bed deteriorates rapidly only in the initial working stage. After several cycles Can be stabilized.