Heat storage systems are used to reduce the mismatch between heat supply and heat demand. Compared to sensible and latent heat storage
thermochemical heat storage has two major advantages:high heat storage density and long-period storage capability at ambient temperature without extra thermal insulation.In this study
the thermal behavior of Mg/MgH2 thermochemical heat storage system is numerically investigated.A mathematical model for considering the exothermic process of heat storage is developed
and the influence of different boundary conditions is examined.The results indicate that heat transfer plays a key role in overall thermochemical heat storage efficiency
and an optimum reaction temperature exists which leads to a maximum discharging power for a given heat transfer coefficient.When the boundary condition is constant wall temperature
the system has a maximum discharging power 0.79 kW?(kg Mg)-1.