PHASE CHANGE MATERIAL BASED DIRECT FLOW SOLAR WATER HEATING SYSTEM

The present invention is a direct flow based ETC solar water heating system with thermal energy storage comprising nine numbers of ETC tubes arranged in series and copper pipes of suitable diameter that have been inserted inside the evacuated tubes in U shape for continuous circulation of water in the entire arrangement. This arrangement is made in such a way that the outlet temperature of water for the first tube is the inlet of the second tube and so on. Phase change materials (PCM) are filled in ETC tubes and outside copper pipe, in a way that these temporary heat energy storage materials are coated around the copper pipe. The water from the overhead tank is placed at the top of the nearby building is taken directly and the hot water obtained at the outlet is collected in a separate tank thus improving the efficiency of solar water heating system.