新型中高温蓄热技术及发展趋势

Novel Medium-high Temperature Thermal Energy Storage Technology and its Developing Trend

储能作为能源利用的重要环节,对工业节能和可再生能源利用具有特别重要的作用。采用高温转换、利用中高温蓄热进行稳定的能量供应,是提高利用效率的根本途径。而提高蓄热系统的传热速率、蓄热效率、蓄热容量和长期稳定性等是目前面临的重要课题,本文介绍了在中高温蓄热技术方面的最新进展及研究重点,其发展思路是开发新型高效的传热蓄热材料、发展过程可控的蓄热方式、实现蓄热系统的控制策略与集成优化。

As an important part of energy utilization field,the energy storage plays a particularly important role in industrial energy-saving and renewable energy utilization.It is a fundamental way to improve the energy utilization efficiency by means of high-temperature conversion and medium-high temperature thermal energy storage （TES）.Moreover,it is a currently facing important subject to improve the heat transfer rate,heat storage efficiency,heat storage capacity and long-term stability of a TES system.The latest developments and research priorities of medium-high temperature TES technology are introduced in the present paper.One of the main developing ideas of medium-high temperature TES is to develop the heat storage media with excellent performances and the controllable TES manners.Another idea is focusing on the control strategy and integrated optimization of TES system.