中文摘要：

结合化学储能和显热储能设计新型太阳能热化学混合储能装置，利用碟式太阳能系统实验研究混合储能装置的储热性能．实验结果表明，太阳直射辐射强度约为600w／m^2时，储能装置20rain即可达到甲烷二氧化碳重整所需温度（750℃），但装置内部温度分布不均匀．根据储能装置传热规律与聚光太阳能非均匀分布特性建立数值模型，发现储能装置的温度分布和变化规律与实验相符，系统加热过程中温度分布具有不均匀性和非稳态性．

英文摘要：

A new solar-energy thermoehemical-mixed energy storage device was designed by combining thermochemieal and sensible heat energy storage and its heat storage performance was experimentally investigated with a solar dish system. The experimental result showed that when the direct solar radiation intensity was about 600 W/m^2 , the energy storage device could reach the operating temperature for meth- ane reforming with carbon dioxide （750 ℃） in 20 minutes, but the distribution of internal temperature was nonuniform. According to the heat transfer pattern of the energy storage device and uneven distribution of concentrated solar energy, a numerical model was developed to analyze the temperature distribution in the device, and it was found that the numerical result was consistent with experimental result. The tempera- ture distribution was nonuniform and instable during the process of system heating.