The device works in a cycle: within an hour, the wings are saturated with water, and then the copper sheets are heated and evaporated. This process can be repeated 24 times a day in rooms with 30% humidity, producing up to 1.3 litres of water per kg of absorbent material per day. When scaled up, the harvester can produce up to 5.8 litres of material per kg per day, which is enough to meet the daily water needs of many people.
Compared to other water harvesting devices, MIT’s design is quite efficient. While some units collect as little as 100 ml of water per kilogram of material, this harvester outperforms them even in low-humidity conditions.
While releasing water requires energy, the team proposes using waste energy from buildings or cars to power the device.
Source: Ferra
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