太阳能热化学混合储能装置的储热性能  

Energy storage performances of solar-energy thermochemical-mixed energy storage device

作　　者：陈源[1] 丁静[1] 陆建峰[1] 杨建平[2] 

机构地区：[1]中山大学工学院,广东广州510006 [2]华南理工大学传热强化与过程节能教育部重点实验室,广东广州510640

出　　处：《兰州理工大学学报》2013年第5期50-53,共4页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51176206);国家重点基础研究发展计划(2010CB227103);国家高技术研究发展计划(863计划)(2012AA050604)

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/m2时,储能装置20min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.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.

关 键 词：热化学储能 碟式太阳能系统 显热储能 

分 类 号：TK512[动力工程及工程热物理—热能工程]