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Solar-Powered system Extracts Drinkable Water from ‘Dry’ Air

prototype of water harvesting system
A prototype of the new two-stage water harvesting system (center right), was tested on an MIT rooftop. The device, which was connected to a laptop for data collection and was mounted at an angle to face the sun, has a black solar collecting plate at the top, and the water it produced flowed into two tubes at bottom.
Credits:Image: Alina LaPotin

Engineers have made their initial design more practical, efficient, and scalable. Researchers at MIT and elsewhere have significantly boosted the output from a system that can extract drinkable water directly from the air even in dry regions, using heat from the sun or another source.

The system, which builds on a design initially developed three years ago at MIT by members of the same team, brings the process closer to something that could be...

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