This study explored the important thermophysical properties (e.g., specific thermal capacity, heat conductivity, etc.) of CaCl2-KCl-MgCl2 ternary salt system as it could be applied to thermal energy storage systems as a high-temperature phase change material—including melting point and thermal stability. Differential scanning calorimetry was performed with different compositions of CaCl2, KCl, and MgCl2 to determine the eutectic composition. Then, thermal stability of the eutectic was studied by thermally cycling the eutectic and evaluating the change of melting temperature and latent heat. This study would provide a feasibility for the consideration of CaCl2-KCl-MgCl2 as a thermal energy storage material.

Thermophysical properties of CaCl2-KCl-MgCl2 eutectic salt

2019 Fall National Meeting

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