A REVIEW PAPER ON SOLAR THERMAL ENERGY STORAGE SYSTEM

Solar thermal energy can be stored by three different ways, namely 1) Sensible heat storage (SHS), 2) Latent heat storage (LHS), and 3) Thermo-Chemical storage (TCS). The SHS refers to the energy systems that store thermal energy without phase change. The SHS occurs by adding heat to the storage medium and increasing its temperature. Heat is added from a heat source to the liquid or solid storage medium. Heating of a material that undergoes a phase change (usually melting) is called the LHS. The amount of energy stored in the LHS depends upon the mass and latent heat of the material. In the LHS, the storage operates isothermally at the phase change of the material. Lastly, comparison of storage. Thermo-chemical storage (TCS) using chemical reactions to store and release thermal energy.