The purpose of the final thesis is to review the storage of thermal energy and its extraction from renewable sources. Our focus has been on the least reasearched area until now – thermochemical storage of heat energy. The aim of the paper is to investigate the mass and heat transfer in a porous medium that absorbs saturated water vapor. For the study, a porous silica gel medium was selected. We were interested in the characteristics of the porous medium, in what way can thermal energy be stored in a thermal energy storage unit, and what are its weaknesses. We have also set goals to compare the already existing metrics and analyzes with the results that would be obtained through programs such as CFD Fluent or Comsol in the future. In this way, it would be easier to get to analyzes while – with the help of a simulation – we could check what we should be careful about when optimising and composing the prototype.
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