Thermal performance of energy storage vessel

This paper is focused on an analysis of thermal energy performance of storage vessel[4]. This storage system consists of two concentric cylindrical containers made of concrete, between these two layers there is a thermal insulation layer – the vacuum-like one. The inner container is filled by water intended to operate as a heat accumulation medium and temperature of the water is assumed as 90ºC. The cooling process was simulated for a period of 30 days in the ANSYS software environment. The simulation showed that the analyzed type of heat storage vessel is able to keep the thermal Energy relatively efficiently.