熔融盐/金属复合相变储热材料的研究进展-中国材料进展

文章信息/Info

Title:: Research progress of molten salt/metal composites phase change materials for thermal energy storage

作者:: 赵新波1; 李传常1; 谢宝珊1; 张波1; 陈荐1; 陈中胜2; 李微1; (1. 长沙理工大学能源与动力工程学院，长沙 410114)
(2. 东华理工大学核资源与环境国家重点实验室培育基地，南昌 330013)

Author(s):: ZHAO Xinbo1; LI Chuanchang1; XIE Baoshan1; ZHANG Bo1; CHEN Jian 1; CHEN Zhongsheng 2; LI Wei1; (1. Key Laboratory of Efficient & Clean Energy Utilization, The Education Department of Hunan Province , School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410114)
(2. State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China Institute of Technology, Nanchang 330013)

Keywords:: molten salt; metal; impregnation method; composites phase change materials for thermal energy storage; corrosion; thermal energy storage technology

摘要:: 储热技术可以提高能源利用效率、解决能量供求在时间和空间上不匹配的矛盾，储热材料是其实际应用的关键。熔融盐具有传热、储热能力，是一种理想的相变储热材料，已广泛应用于储热技术中。熔融盐的导热系数一般为0.5～1.0 W/(m·K)，作为相变储热材料，存在导热系数低的问题。而通过将其与金属材料复合可以大幅提高其导热系数，增强其储热性能，熔融盐/金属复合相变储热材料已成为熔融盐应用的重点研究方向之一。总结了镍、铝、铜、镁等金属元素以颗粒、泡沫、翅片等结构形式与熔融盐复合的复合相变储热材料的研究进展，还介绍了熔融盐/金属复合相变储热材料的制备方法及其在工业余热回收、太阳能热发电方面的应用，同时概述了高温熔融盐对金属的腐蚀行为。

Abstract:: Heat storage technology can improve energy efficiency and solve the contradiction between energy supply and demand in time and space, and the key to its practical application is heat storage materials. With some advantages of heat transfer and heat storage capabilities, molten salt is an ideal phase change heat storage material and has been widely used in thermal energy storage processes. The thermal conductivity of molten salt is 0.5～1.0 W/(m·K) generally, which can not meet the need of using as a phase change heat storage material. The combination of the metal material and the molten salt can greatly improve the thermal conductivity and heat storage performance of the molten salt. Molten salt/metal composite phase change material for thermal energy storage has become a hot point in the application of molten salt. This paper summarizes molten salt composites with nickel, aluminum, copper, magnesium and other metal with the form of particles, foam, fins and other structures. The preparation of molten salt/metal composite phase change materials, and their applications in industrial waste heat recovery and solar thermal power are summarized. Meanwhile, the corrosion behavior of molten salt in high temperature is also reviewed.