Volume 4: Innovative Solutions for Energy Transitions: Part III

Two New Chloride Eutectic Mixtures and Their Thermo-Physical Properties for High Temperature Thermal Energy Storage Pei Xie, Xiaolan Wei*, Weilong Wang*, Jianfeng Lu, Jing Ding

Abstract

Considered as promising candidates of composing eutectic chloride molten salts for high temperature energy storage and transfer, NaCl-KCl-CaCl2 and NaCl-CaCl2 systems are formulated into proper to satisfy the property requirement for heat storage and transfer. The thermal properties of the eutectic molten salts liquid such as melting points, specific heat capacity, density, viscosity and thermal stability were measured by DSC, Archimedes, rotation and mass loss curves under isothermal conditions methods. The results shown out, with appropriate operating temperature, lager heat capacity, acceptable viscosity and good thermal stability, NaCl-KCl-CaCl2 and NaCl-CaCl2 systems are the excellent high temperature heat storage and transfer materials under 850℃.

Keywords Chloride eutectic molten salts, thermo-physical properties, thermal stability