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Company creates water condenser that needs no power, capturing potable water 24 hours a day

Written by Fabio Lucas
Published 30/06/2021 às 23:00
energy clean energy drinking water environment
Photo: ethz.ch

Swiss researchers design equipment capable of condensing drinking water 24 hours a day without the need for energy

Global warming has jeopardized the supply of fresh water across the planet. Coastal cities are choosing to use salinization, and the option of extracting water from the air is growing around the world. However, these options are expensive and waste a lot of energy, a situation that causes them to be used in only a few places. Still, researchers da ETH Zurich aim to help communities around the globe generate clean drinking water 24 hours a day, cheaply and without wasting energy.  

The Swiss device consists of a coated glass panel, which promises to reflect the reaction of the sun and also radiates its heat directly into space. In this way, the condensing equipment can stay up to 15 degrees below the technology. At the bottom of the equipment, the water vapor in the air ends up condensing and generating drinkable water. 

Experts coated the glass with a special polymer, designed especially for this purpose, having the ability to capture fresh water 24 hours a day, without using energy. The coating causes the glass to emit infrared radiation into a window. The design also has a cone-shaped radiation shield to deflect heat radiation. 

Water condenser project: Photo: ETHZ

Ability to capture potable water without power

The design has the ability to run without any energy input. The device has the capacity to produce up to 0,6 deciliters of water per hour per square meter of painei, under the best conditions: “This is close to the theoretical maximum value of 2,03 ounces (0,6 deciliters) per hour, which is physically impossible to exceed.”, highlights Iwan Hanchler, student at ETH Zurich. 

The differential of the project compared to other studies is that condensed water needs to be removed from a surface, an action that requires energy. The researchers then applied a hydrophobic coating, causing water to drip and be collected

The idea of ​​the project is to invest in the device that can be used in countries with great scarcity and water, as well as developing and emerging countries.  

Fabio Lucas

Brazilian journalist, I love sports, news and politics. He already contributes to several other portals related to sports, economics and regional information.

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