Mg-Cu-Zn相变储热材料充放热特性研究

Heat Charge and Discharge Characteristics of Phase Change Thermal Storage of Mg-Cu-Zn

设计并搭建了套管式中高温蓄热系统实验装置,采用Mg-Cu-Zn合金相变储热材料,空气为传热介质,利用Fluent软件对该套管式蓄热装置进行了数值模拟和充放热实验,分析了传热介质流量对蓄热装置充放热特性的影响,评价了蓄热装置的放热效率。结果表明,模拟结果与实验数据吻合较好,实验结果为中高温蓄热系统的优化设计和工程应用提供了理论依据。

Casing type high temperature thermal energy storage （ TES ） unit was designed and constructed .The TES unit contains Mg-Cu-Zn alloy as phase change material , air as heat transfer fluid （ HTF） .Fluent software was used to perform numerical simulation, and experiments were carried out to examine the effects of flow rate of HTF on the performance of the storage unit.The efficiency of heat discharging process was adopted as the index of thermal storage equipment heat exchange performs . The results show that the trends of numerical results and experimental data are in close agreement ; the maximum error between them is only 6%.The results laid a theoretical foundation for optimization design and engineering application of high temperature TES.