Sunday, 23 April 2017

Scientists Discover Solar-Power Device That Makes Water Out Of Air


Scientists have a new solution for bringing clean water to remote areas.

A team has created a solar-powered device that can produce drinking water out of air -- even in desert climates, according to the researchers from the Massachusetts Institute of Technology and the University of California, Berkeley.
"I'm most excited about being able to realize a functioning device in these remote areas and to be able to provide clean water to all the people who need it," Evelyn Wang, associate mechanical engineering professor at MIT and co-author of the paper first published in the journal "Science," told CNNTech.
While similar methods like atmospheric water generators already exist, the new project works in drier climates and uses less energy.
The new device looks like a box. Inside the box is a layer of a custom metal-organic framework (also called a MOF), which is essentially a material that acts as a sponge to capture as much water as possible when the box is open. Water can be collected from the air and rain.
Once the water is captured, the box is closed manually and exposed to the sun. The sun heats up the material so it releases water from its surface in the vapor phase. The vapor is then converted to the liquid phase with a condenser -- which can cool the vapor even in hot climates -- to create clean drinking water.

CNN

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