熔融盐单罐集成蒸汽发生器储热系统的释热规律研究

Heat Discharge Research of a Molten Salts in Single Tank Thermal Storage System Integrated Steam Generator

中文关键词: 熔融盐  储热系统  单罐  自然对流  温度分层

英文关键词: molten salt  thermal energy storage system  single tank  natural convection  thermal stratification

中文摘要:

      随着“碳中和、碳达峰”的提出，太阳能发电、风电等可再生能源再次受到广泛研究，而储能技术是制约其大规模利用的最主要瓶颈之一。因此，本文提出一种单罐熔融盐集成蒸汽发生器储热系统，并采用FLUNT软件对熔融盐在蓄热单罐中的流动规律和传热特性进行数值模拟研究。通过改变螺旋管换热器的换热面积、节距和布置方式来分析储热罐放热时熔融盐的平均温度、温度场、速度场以及放热功率的变化规律，研究结果为单罐熔融盐集成蒸汽发生器储热系统的设计提供一定的指导意义。

英文摘要:

      With the proposal of the "carbon neutrality and carbon peak", concentrating solar power, wind power and other renewable energy sources are widely investigated again, while thermal storage technology is one of the problems restricting their large-scale utilization. In this paper, a molten salt in single tank thermal storage system integrated steam generator were proposed, and Fluent software was used for numerical simulation of the flow rule and heat transfer characteristics of molten salt in a heat storage single tank. The average temperature, temperature field, velocity field and heat discharge power of molten salt in heat storage tank were analyzed with changing heat exchange area, pitch and arrangement of spiral tube heat exchanger. The research results provide certain guiding significance for the design of the molten salts in single tank thermal storage system integrated steam generator.