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Current issue

ELEKTRO 11/2020 was released on November 11th 2020. Its digital version will be available on December 2nd 2020.

Topic: Electrical switchboards and switchboard technology

Innovation, Technology, Projects
New energy law: an opportunity for energetics community
Data centres – third session
Starting October, REMA raises financial subsidy for recycling electrical devices

SVĚTLO (Light) 4-5/2020 was released on September 18th 2020. Its digital version will be available immediately.

Optical radiation effects and use
Plants and light in biofil interior – Part 12
Plants and lights in public areas
Melanopic day illuminance in buildings

Fairs and exhibitions
FOR INTERIOR 2020: Inspiration for habitation and trends of furniture and interiors world

Solar-powered system extracts drinkable water from “dry” air

16. 10. 2020 | MIT | www.mit.edu

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 become a practical water source for remote regions with limited access to water and electricity. The earlier device demonstrated by researchers provided a proof of concept for the system, which harnesses a temperature difference within the device to allow an adsorbent material — which collects liquid on its surface — to draw in moisture from the air at night and release it the next day. When the material is heated by sunlight, the difference in temperature between the heated top and the shaded underside makes the water release back out of the adsorbent material. The water then gets condensed on a collection plate.

System for drinkable water

But that device required the use of specialized materials called metal organic frameworks, or MOFs, which are expensive and limited in supply, and the system’s water output was not sufficient for a practical system. Now, by incorporating a second stage of desorption and condensation, and by using a readily available adsorbent material, the device’s output has been significantly increased, and its scalability as a potentially widespread product is greatly improved, the researchers say.

Read more at MIT

Image Credit: MIT