太阳能谷电加热熔盐蓄热系统特性

摘要

With the environmental pollution and energy consumption due to the large difference between peak and valley of power grid,the molten salt heat storage system (MSHSS) utilizing solar Energy combined with valley electric is presented for good energy saving and low emissions.The costs of MSHSS utilizing solar Energy combined with valley electric are greatly reduced.The law of heat transfer in molten salt heat storage technology is studied with the method of grey correlation analysis.The results show the effect of elbow sizes on surface convective heat transfer coefficient with different flow velocities.%针对环境污染日益严重和电网谷峰差逐年加大给电网带来安全隐患的两个重大问题,结合熔盐储能技术提出了太阳能&谷电加热蓄能系统.太阳能&谷电加热蓄能系统不仅具有良好的节能减排效果,还有很好的经济性.针对熔盐蓄热技术传热规律研究较少的问题,理论计算了管道弯头内表面的对流换热系数,并且采用灰色关联分析方法,对不同尺寸弯头在不同流速时表面对流换热系数进行研究,分析了几何形状和流速对内壁面对流换热系数的影响程度.