Abstract
Conditions and screening criteria of chemical heat storage material are introduced in the paper. Hydroxide is chosen as the research object. The thermodynamic parameters of the material have been calculated using HSC chemistry software. The main parameters are steering temperature and equilibrium constant. The results show that steering temperature of calcium hydroxide is 798 K, and its enthalpy difference is 100 kJ/mol. In the vicinity of this temperature, Gibbs free energy changes from the positive to the negative, indicating that above this temperature, the reaction can be spontaneous. Calcium hydroxide is a kind of ideal heat storage material as a large-scale storage of solar energy.
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Acknowledgments
This work was financially supported by the State Key Development Program for Basic Research of China through contract No.2009CB220000 and open fund of State Key Laboratory of Multiphase Flow in Power Engineering and Department of Education project of Shaanxi Province through contract NO. 12JK0788.
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Yan, Q., Zhang, X., Zhang, L. (2014). Analysis and Optimization on Solar Energy Chemical Heat Storage Material. In: Li, A., Zhu, Y., Li, Y. (eds) Proceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning. Lecture Notes in Electrical Engineering, vol 262. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-39581-9_13
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DOI: https://doi.org/10.1007/978-3-642-39581-9_13
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