CHENNAI: A city-based independent researcher has won a national-level research competition at IIM-Calcutta for coming up with a solar-powered device that produces a litre of potable water per hour straight from air.

Kumar Loganathan developed the product keeping in mind the concerns of depleting groundwater resources. The device requires only 2% of water present in air as water vapour. The equipment has been designed in such a manner that water can be extracted from the air in deserts, where the relative humidity is only 44%. “In other areas, water vapour is constantly replenished and there is no question of shortage,” said Loganathan. “The device adjusts the dew point according to the relative humidity of the surrounding and condenses air into water,” he adds.

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