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Thermodynamic Modeling and Experimental Verification of Eutectic Point in the LiNO3-NaNO3-Ca(NO3)2 Ternary System

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Abstract

The phase diagram of the LiNO3-NaNO3-Ca(NO3)2 ternary system was predicted by using an asymmetric Toop model. The thermogravimetry and Differential Scanning Calorimeter experiments of the predicted eutectic composition were also carried out. The eutectic temperature and composition reported in various literatures are evaluated based on the results determined in this work. The results show that the eutectic temperature and composition reported by Storonkin et al. (Vopr Termodin Geterogen Sist i, 2:128-139, 1973) is more reliable than reported by other literatures. It is indict that wider working temperature window (lower condensation point) in solar thermal power plant can be obtained when the thermal energy storage medium of the titled system is prepared with the eutectic composition determined in this paper.

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Acknowledgments

This work is financially supported by Qinghai Science & Technology Department of China under the contract number 2012-H-804.

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, People’s Republic of China

    Juntao Wang & Dewen Zeng

  2. School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning, 437100, People’s Republic of China

    Juntao Wang & Fang Xu

  3. Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, 810008, People’s Republic of China

    Haijun Han & Dewen Zeng

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  1. Juntao Wang
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Correspondence to Dewen Zeng.

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Wang, J., Xu, F., Han, H. et al. Thermodynamic Modeling and Experimental Verification of Eutectic Point in the LiNO3-NaNO3-Ca(NO3)2 Ternary System. J. Phase Equilib. Diffus. 36, 606–612 (2015). https://doi.org/10.1007/s11669-015-0412-4

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  • DOI: https://doi.org/10.1007/s11669-015-0412-4

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