How to extract drinking water from dry air

Photo: Aquaer

A Spanish company has devised a system to extract drinking water from thin air to supply arid regions where people are in desperate need, news wires reported. "The goal is to help people," Enrique Veiga, who invented the machine during a harsh drought in southern Spain in the 1990s, said cited by Reuters. "The goal is to get to places that don't have drinking water."

The devices made by his company, Aquaer, are already delivering clean, safe water to communities in Namibia and a Lebanese refugee camp. "In the villages we visited in Namibia, they were astonished, they didn't understand, asking where the water came from," he said.

The machines use electricity to cool air until it condenses into water, harnessing the same effect that causes condensation in air-conditioning units. While other water generators based on similar technology require high ambient humidity and low temperatures to function effectively, Veiga's machines work in temperatures of up to 40 Celsius and can handle humidity of between 10% and 15%.

A small machine can produce 50-75 litres a day, and be easily carried on a trolley, but bigger versions can produce up to 5,000 litres a day. "Our idea is not only to make a device that is effective, but also to make it useful for people who have to walk for miles to fetch water or make wells," Veiga explained.

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