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    solar-powered water harvester tagged posts

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

    October 16, 2020, Categories  Chemistry/Nanotechnology

    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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    Device Pulls Water from Dry Air, powered only by the Sun

    April 14, 2017, Categories  Chemistry/Nanotechnology, Environment/Geology, Physics, Technology/Electronics

    This is the water harvester built at MIT with MOFs from UC Berkeley. Using only sunlight, the harvester can pull liters of water from low-humidity air over a 12-hour period. Credit: MIT photo from laboratory of Evelyn Wang

    This is the water harvester built at MIT with MOFs from UC Berkeley. Using only sunlight, the harvester can pull liters of water from low-humidity air over a 12-hour period. Credit: MIT photo from laboratory of Evelyn Wang

    Metal-organic framework sucks up water from air with humidity as low as 20%. Imagine a future in which every home has a solar appliance that pulls all the water the household needs out of the air, even in desert climates. That future may be around the corner, with the demonstration this week of a water harvester that uses only ambient sunlight to pull liters of water out of the air each day with very low humidity. The solar-powered harvester was constructed at MIT using a special material – a metal-organic framework, or MOF – produced at UC, Berkeley.

    Omar Yaghi, scienti...

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