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Geysers work on a principle of converting electrical energy into the heat energy. There is heating element inside the geyser which gets heated. Cold water gets collected into the geyser tank and gets heated to a certain temperature. There is thermostat device, fitted in the geyser, which cuts off the electric supply to the geyser, once the water inside reaches a certain temperature. It helps conserving the electricity. For the convenience of the users, there are two LED lights are given on the below side of the geyser. Conventionally, these are red and green lights. When the element is heating up, red light is lighted and when the element stops working, green light starting emitting. Emission of green light means the water is hot at the maximum temperature allowed by the geyser. Cold water in the geyser come in through a separate inlet and hot water goes out through a separate outlet.
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A geyser is a periodically erupting pressure cooker.it consist of a long narrow vertical hole into the underground streams seep.the column of water is heated by volcanic heat below to temperature exceeding 100'c . this can happen because the relatively deep vertical column of water exerts pressure on the deeper water,thereby increasing the boiling point the narrowness of the shaft shutsoff convectiopn currents,which allows the deeper portion to become considerably hotter than the water surface.water at the surface is less than 100'c ,but the water temperature below ,where it is being heated,is more than 100'c ,high enough to permit boiling before water at the top reaches the boiling point boiling therefore begins near the bottom ,where thw rising bubbles push out the column of water above,and the eruption starts. as the water gushes out ,the pressure on the remaining wall is reduced.it then boils rapidly and erupts with great force.
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