Scientists, including a research team from the Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, have found a way to obtain drinking water from air humidity using renewable energy (thermal solar collectors and photovoltaic cells, and gravity to power the vacuum).
“The principle of the process is as follows: hygroscopic brine – saline solution which absorbs moisture – runs down a tower-shaped unit and absorbs water from the air. It is then sucked into a tank a few meters off the ground in which a vacuum prevails. Energy from solar collectors heats up the brine, which is diluted by the water it has absorbed.”
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