SET Proceedings 2978-4387 Caravel Press 10.65582/set.2017.073 2017.073 Thermal energy storage using thermochemical materials HawwashA.A. ahmed.hawash@ejust.edu.eg HassanHamdy AhmedMahmoud OokawaraS. sokawara@chemeng.titech.ac.jp Energy Resources Engineering Department, Egypt- Japan University of Science and Technology (E-JUST), Alexandria, Egypt Mechanical Engineering Department, Faculty of Engineering, Benha University, Benha, Egypt Mechanical Engineering Department, Faculty of Engineering, Assiut University, Assiut, Egypt Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology, Tokyo, Japan 13072017 16 9791220022033 1 10 13 July 2017 © 2017 Copyright WSSET 2017

There are different methods to store thermal energy and thermochemical heat storage is one of the sufficient Thermal energy storage. The energy storage density of thermochemical materials is higher compared with sensible and latent heat storage method. This paper presents a mathematical simulation of thermochemical energy storage process by using COMSOL Multiphysics modeling Software. The thermochemical material studied is magnesium chloride hexa-hydrate. The model result is validated with the experimental results and the temperature distribution in the bed and material are investigated. Two reactor designs are considered; cylinder and truncated cone with different radiuses and heights. The comparison of the performance between them is investigated. The validation shows good agreement between the present work and the literature. The results show that the increase in entrance area reduces the charging time and increases the pressure drop at constant volume and height of the bed. Cylinder reactor and truncated cone with small and large diameters of 15.5 cm and 18.4 cm are the best to charge this material with thermal energy.

 Seasonal storage Thermochemical heat storage Salt hydrates Magnesium chloride hexa-hydrates 17 to 20 July 2017 16th International Conference on Sustainable Energy Technologies SET2017 16 Bologna, Italy