Solar Powered Water Harvester – Water From Thin Air

Solar Powered Water Device That Pulls Water From the Air

Access to clean abundant water is something that is only a dream for millions of people around the world. Pollution is contaminating water sources while climate change is moving where the water can be found.

A good example is Las Vegas which is located in a desert maybe where no city should ever have been concieved. The water for the city comes completly from the Colorado river which is in itself subject to draughts.

Imagine a future in which every home has an appliance that pulls all the water the household needs out of the air, even in dry or desert climates, using only the power of the sun.

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 in conditions as low as 20 percent humidity, a level common in arid areas.

The Promise Of A Solar Powered Water Harvester

The solar-powered water harvester, reported in the journal Science, was constructed at the Massachusetts Institute of Technology using a special material namely a metal-organic framework, or MOF produced at the University of California, Berkeley.

The prototype, under conditions of 20-30 percent humidity, was able to pull 2.8 liters (3 quarts) of water from the air over a 12-hour period, using one kilogram (2.2 pounds) of MOF. Rooftop tests at MIT confirmed that the device works in real-world conditions.

About Gordon Smith

Gordon’s expertise in the area of industrial energy efficiency and alternative energy. He is an experienced electrical engineer with a Masters degree in Alternative Energy technology. He is the co-founder of several renewable energy media sites including Solar Thermal Magazine.

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