Modeling of thermochemical energy storage by salt hydrates

摘要: We investigate the capability of salt hydrates to store thermochemical energy as they dissociate into anhydrous salts or lower and water vapor upon heating using example magnesium sulfate heptahydrate a model salt. An has relatively higher content than its hydrated counterpart. It can be stably stored over long durations transported at ambient temperatures. Thermal released by allowing flow across salt, which transforms chemically heat sensible form. This potential technology for long-term thermal storage applications, e.g., storing solar during summer months releasing it in winter provide buildings infrastructure. Water desorption occurs from when are heated critical temperature their dehydration is activated. While diffusion governs transfer below this temperature, process influenced kinetics. overall relations conservation mass energy, relation describing kinetics, employing finite difference scheme solve them. Different cases considered, guidance about performance, such characteristics optimally designed salts. The time required undergo complete decreases nonlinearly with an increase input flux.