熔融盐单罐储热系统释热传热规律研究  

Heat Discharge Research of Molten Salt in Single Energy Storage Tank

作　　者：孙晓丽[1] 鹿院卫[1] 崔锡民 于强[1] 吴玉庭[1] 马重芳[1] 

机构地区：[1]北京工业大学,传热强化与过程节能教育部重点实验室暨传热与能源利用北京市重点实验室,北京100124

出　　处：《工程热物理学报》2016年第5期1032-1037,共6页Journal of Engineering Thermophysics

基　　金：北京市自然科学基金项目(No.3132012);国家“863”项目(No.2013AA050502);国家自然科学基金重大国际合作与交流项目(No.51361135702)

摘　　要：熔融盐单罐储热相对于双罐储热可以节省储热成本,为了得到单罐储热系统内熔融盐释热传热规律,本文将螺旋盘管换热器布置在圆柱形隔板与罐壁形成的环形通道内,实验分析圆柱形隔板调整流场前后单罐储热系统性能。实验结果表明,圆柱形隔板起到了罐内熔盐流场的调节作用,进而提高了螺旋盘管内释热介质出口温度、换热器换热量以及换热器的瞬时效率,缩短了取热时间。这些研究结果为熔盐单罐储热系统设计提供理论依据。Single-tank heat storage using molten salt can save storage cost relative to two-tank heat storage system.In order to obtain the heat discharge mechanism of molten salt in single energy storage tank,a spiral coil heat exchanger is placed in the annular gap that is formed by a two open ended cylindrical baffle and the tank wall.The energy discharge performance in the single tank is analyzed.The results show that the flow filed of molten salt in the storage tank can be adjusted using cylindrical baffle,and the heat exchanger outlet temperature,heat transfer capacity,transient heat exchanger effectiveness can also be improved.The results can be a base for the design of single energy storage tank.

关 键 词：单罐 螺旋盘管换热器 圆柱形隔板 释热 

分 类 号：TK12[动力工程及工程热物理—工程热物理]