硝酸熔盐储能传热材料的研究与进展

Research Progress and Application on Nitrate Salt Thermal Storage and Heat Transfer Media Used for Concentrating Solar Power

储能传热技术及其材料是聚光太阳能热发电系统的三大核心技术之一,选择合适的储能传热材料可以降低商业太阳能热发电的成本,目前商业化的储能传热材料主要是混合型硝酸/亚硝酸熔盐。介绍了目前国内外已开发、设计的混合硝酸(含亚硝酸)熔盐型储能传热材料的种类、熔点、热分解温度等热性能参数,比较了这些材料的优缺点,并展望了该储能传热材料可能的研究方向。

Thermal energy storage （TES） and heat transfer fluid （HTF） is one of the three key elements in concentrating solar power （CSP）. The cost of commercial CSP can be reduced by selecting the appropriate TES and HTF media. At present, several commercially available mixtures of nitrate and or nitrite salts were used as TES and HTF materials in CSP. Thermal properties of TES and HTF materials including nitrate, nitrite molten salts and their application in CSP were introduced. In addition, the advantage and disadvantage of these TES and HTF materials were pointed out. And the prospect of design and research of TES and HTF materials were expected.