高温余热回收用熔融盐/多孔镍基复合相变蓄热材料(英文)  

Molten Salts/Porous-Nickel-Matrix Composite as Phase Change Material for Effective Use of High Temperature Waste Heat

作　　者：王胜林[1] 王华[1] 祁先进[2] 李宏宇[1] 

机构地区：[1]昆明理工大学电力学院,云南昆明650093 [2]昆明理工大学材料与冶金工程学院,云南昆明650093

出　　处：《中山大学学报（自然科学版）》2005年第A02期7-10,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：云南省自然科学基金重点资助项目(2002C0003Z)

摘　　要：提出了一种由多孔镍基熔浸熔融盐制备而成的新型复合相变蓄热材料，重点研究了该材料的制备。并采用X-射线衍射分析、扫描电镜和差热差重分析，研究了复合蓄热材料的性能和结构。结果表明：最佳的复合时间2～3h；最佳的复合温度为高于熔点50～100℃。A new supported phase change material （PCM） made of mohen salts impregnated by capillary forces in a porous-nickel matrix is presented. The preparation of molten salts/porous-nickel matrix PCMs was mainly discussed. Structures and properties of these materials were studied by X-ray diffraction （XRD） analysis, scanning electronic microscopy （SEM） observation and differential scanning calorimetry （DSC） analysis. The optimum composite time was 2 - 3 hours. The optimum composite temperature was 50 - 100 ℃ above melting point of the mohen salt. Heat storage density of PCMs was also discussed.

关 键 词：高温 复合相变材料 热能贮存 多孔镍基 熔融盐 

分 类 号：TK02[动力工程及工程热物理]