新型复合金属氢分离膜热应力的数值模拟  

Numerical Simulation of the Thermal Stress on a Novel Composite Membrane for Hydrogen Separation

作　　者：张浩[1] 廖全[1,2] 

机构地区：[1]重庆大学动力工程学院,重庆400044 [2]低品位能源利用技术及系统教育部重点实验室,重庆400044

出　　处：《工程热物理学报》2013年第9期1740-1744,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51006131);中央高校科研基金资助项目(No.CDJZR12138801)

摘　　要：建立了复合金属氢分离膜热应力有限元分析模型。在不同工作温度条件下,对常规的平板式复合金属氢分离膜和本文所提出的新型镶嵌式复合金属氢分离膜内的热应力进行了详细的分析和比较。结果表明:在相同材料匹配及工作温度条件下,新型复合金属氢分离膜内沿交界面端面处向下逐渐减小的压应力会使该复合结构更加紧密牢固,从理论上证实了这种镶嵌结构能够大幅延长复合金属氢分离膜的使用寿命,为这种镶嵌结构复合金属氢分离膜的制备与应用提供了理论指导。A finite element model for thermal stress analysis of hydrogen separation composite membrane was proposed and the corresponding numerical studies were conducted. The thermal stresses were comprehensively analyzed and compared between the conventional sandwich-based composite membrane and a novel embedded composite membrane under the condition of different working temperatures. The simulation results show that the compressed force will be decreased along the interface between the two materials for this novel embedded composite membrane and this will make the proposed special embedded structure become stronger as compared to that of the conventional sandwich-based composite membrane if the material pairs and working temperatures are the same. Therefore, the service life of this novel structure of composite membrane for hydrogen separation will be greatly expanded, and the simulation results of this paper will provide some theoretical or experimental guidance for the development and application of this novel structure of composite membrane for hydrogen separation.

关 键 词：复合金属氢分离膜 氢的纯化 热应力 数值模拟 

分 类 号：TK91[动力工程及工程热物理]