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3.0 Working Principle
A typical Solar Water heating system consists of Flat plate collector, Insulated Storage Tank, Mounting structure and
Connection set.
When the sunlight falls on the collector, the heat energy will be absorbed by the absorber. The heat is then
transferred to the water flowing through riser tubes placed beneath the absorber. As the water gets heated it
becomes light and moves upwards towards the insulated solar tank. The void thus created will be filled by the heavy
cold water from the tank. The cycle repeats and this process is called Thermosiphon Process. This process
continues until the temperature of the hot water in the storage tank and the absorber equalizes. Since the tank is
insulated, The hot water stored in the tank will be available for usage next day morning.
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