Racold Solar Water Heater comprises of an array of solar collectors to collect solar energy and an insulated tank to store hot water. Both are connected to each other. During the day time, water in solar collectors gets heated which is either pumped or flown automatically on thermosyphon principle to the storage tank.. For more info visit us at http://cpsenergiespune.com/Racold-Solar-Water-Heater-comprises-of-an-array-of-solar-collectors-to-collect-solar-energy-and-an-insulated-tank-to-sto/b134