Known as the Solar Man of Kolkata, the man with a 35-year-old career in renewable energy, was recently honoured with the prestigious Mission Innovation Champion Award in Vancouver, Canada on May 27, 2019.
Non-potable water is filled in the tubes after filtering with four-layered cotton cloth. The water gets heated in the stagnation mode by solar energy, making it potable.
An old saree, glass tubes and solar energy is all you need for a low cost water solar purifier and heater. Here is all you need to know about the path-breaking technology that can change the landscape of rural India.
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