中文摘要：

设计并搭建了以太阳能为热源的圆柱形蓄热器实验台，将封装了相变材料（PCM）的蓄热球体放置在蓄热器中，测量蓄热器进出口和蓄热器内第一～七层的热媒（HTF）温度，对所测温度和流量进行数据采集。分析HTF的进口温度和流量变化对蓄热器热性能的影响。结果表明，随着HTF的进口温度的提高，完成蓄热所需的时间不断减少，蓄热效率得到提高，流速的增加对蓄热的影响不大。初步掌握热媒的流动特性对相变蓄热装置蓄放热过程的影响，为蓄热器的工程应用设计、评价提供参考依据。

英文摘要：

A thermal energy storage unit laboratory for solar heat sources was designed and constructed. The spherical capsules which were filled in phase change material （PCM） were put into the unit. The temperatures in inlet and outlet of the thermal energy storage（TES）unit and the first to seventh layer of heat transfer fluid（HTF） were measured. Many groups＇ experiment schemes were designed and the experiments were divided into charging and discharging processes, different import temperature and flow rate of HTF were repeatedly experimented, the effects of inlet fluid temperature and flow rate of HTF on the performance of the storage unit were analyzed. The experimental results show that when the import temperature and flow rate of HTF increase, the time for finishing charging is reduced constantly and the efficiency of thermal energy storage is improved. The results offer the reference basis for design, optimization, and appreciation of the TES unit.