新型金属氢化物板式反应床的传热特性  

Heat Transfer Characteristic for a New Plate Metal Hydride Reactor

作　　者：阳明[1] 覃峰[1] 陈江平[1] 叶奇眆 陈德敏[2] 吕曼琪[2] 

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240 [2]中国科学院金属研究所,沈阳110016

出　　处：《上海交通大学学报》2009年第9期1456-1460,共5页Journal of Shanghai Jiaotong University

基　　金：国家高技术研究发展计划(863)资助项目(2006AA05Z135);国家自然科学基金资助项目(50776094)

摘　　要：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.The property of major metal hydride reactors in the world was analyzed and a new plate metal hydride reactor was designed. An experimental facility to test the metal hydride reactor was also designed correspondingly. The effective thermal conductivity of the plate metal hydride reactor was measured by varying the initial metal hydride packing fraction, the kind of filled gas and the pressure of the filled gas, cycle numbers. The test results show that the effective thermal conductivity of the reactor, has exceeded 7.5 W/（m · K） before activation, which is increased greatly. After alloy activation, the effective thermal conductivity of the reactor has a linear change trend with the hydrogen pressure during the interval 0.1-3.5 MPa. The effective thermal conductivity of the reactor just only decreases quickly at the beginning , but becomes stable after several cycles.

关 键 词：金属氢化物 板式反应床 有效导热特性 

分 类 号：U463.1[机械工程—车辆工程]