Flat Plate Solar Water Heater
This heater is based on the principle of black body absorption, known as the Thermosyphon principle. The black surface of the collector absorbs the heat from the sun’s rays and transfers it to the water passing through the pipes of the collector. Hot water being lighter rises to the insulated storage tank and an equal amount of cold water replaces this hot water. This cycle repeats as long as the sun shines, resulting in all the water getting heated for distribution through pipes, to the required usage points.