【摘 要】
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Heat storage is one of the critical aspects for uninterrupted operation of concentrating solar power station.Metal hydrides can storage heat to more than 2MJ/kg,which is about 10 times higher than fus
【机 构】
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General Research Institute for Nonferrous Metals,No.2,XinJieKouWai St.,Xicheng District,Beijing 1000
【出 处】
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2015中国功能新材料学术论坛暨第四届全国电磁材料及器件学术会议
论文部分内容阅读
Heat storage is one of the critical aspects for uninterrupted operation of concentrating solar power station.Metal hydrides can storage heat to more than 2MJ/kg,which is about 10 times higher than fuse salt.For practical application of the Metal-hydride thermal storage system,a pair of metal hydrides are needed fpr the whole heat storage/release process.The one with low hydriding enthalpy is an important component for the efficiency of the heat storage system.In this study,several Re-Ni-Mn based ingots(ReNi4.5Mn0.5,Re=La,Ce,La riched and Ce riched mischmetal)are synthesized by magnetic levitation melting and quenching method.Hydrgoen storage studies indicated that with the increasing of Ce content,the hydriding enthalpy decline from 30 to 22 kJ/mol·H2,and their plateau pressure increase from 0.3 to 4 MPa.It is calculated that the heat storage system can have more than 70%thermal conversion efficiency when coupled with Mg based heat storage materials.the microstructures and hydriding kinetics of the samples are also studied in this paper.
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