Accumulation of Thermal Energy in the Thermal Tank Storage with the Help of the Sun

The propose of study is a convert the capture of solar energy into thermal energy as one of the renewable energies. Surface-selective hot water collectors with an area of 225 m2 are used to collect solar energy. This energy captured by the collectors is transferred by technologically modified water, which transfers the heat in the technical room with the help of an exchanger. On the other side of the exchanger is water in which energy is stored. Water with a volume of 160 m3 is stored in three different sizes of thermal tank storage. The smallest thermal tank storage with a volume of 24 m3. This thermal tank storage was measuring during 2 years which charging and discharging cycles took place. In the first year, there were large heat losses through evaporation from the water surface. And in the second year of research, the water surface was covered, which helped to eliminate heat losses and extend the accumulation period.