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Solar energy can be used for getting distilled water. The device used is called solar still.
It is made of fiber glass, with a tapered top surface. A glass is fitted on the top surface.
The unit has an area of a sq.m. The daily output from the solar still is 2-2.5 liters.
This is used in laboratories and battery stations, particularly in remote areas where the use
of the solar still for
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getting distilled water works out to be an economical proposition.
The cost of a unit is around Rs.5000/- and as there are no moving
parts, the maintenance cost is negligible.
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