ABSTRACT:

Thermal Energy Storage (TES) system is device which allows to store energy in the form of heat, and then can be used it for further processing. The batteries are expensive and unaffordable for everyone, so using sand and concrete which are easily available, affordable as well as good efficiency. The heat storing capacity of water is up to 99 degrees Celsius after it directly start boiling while the sand can store heat up to 600 degrees Celsius. During off peak hours when the energy demand is low, energy utilized to heat the sand to stored energy and heat when the energy demand is high. The system can achieved efficiency of heat retention of 78% over a 12-hour cycle, and average thermal conductivity of 0.201 W/mK and specific heat capacity of 1.234 kJ/kgºC. The prototype stored 0.235 kWh of thermal energy by using 50 kg of desert sand, heated via a CARIO CD-200F heater and monitored using K-type thermocouples. Components which are used for thermal storage that is stainless steel tank, copper coils Heat Exchanger, sand, concrete, layer of insulation(foam), Heater, k type Thermocouples to sense the temperature