Abstract

For closing the gaps of the eutectic composition and temperature of the system LiNO3–KNO3–Ca(NO3)2 reported by various literatures, we chose an asymmetric Toop model to simulate and predict the phase diagram of the titled system, followed by differential scanning calorimeter and thermogravimetry experiments. The eutectic composition and temperatures reported in literatures are evaluated based on the results determined in this work. It was found that the eutectic composition and temperature reported by Lehrman et al. (J Am Chem Soc 59(1):179–181, 1937) is more reliable than reported by other literatures. It is indicted that wider working temperature window (lower condensation point) in concentrated solar power plant can be obtained when the thermal medium of the titled system is prepared with the eutectic composition determined in this work.

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