A team of scientists from MIT developed a new, $4 method for solar-powered desalination that stops the build-up of salt seen in similar devices.
For the cost of only four dollars, a 10.8 ft2 model of the new device can provide daily clean drinking water for a family. It's also built using easily procured everyday materials, meaning the system is scalable and can be deployed to many people across the globe.Water scarcity could affect half of the world's population by 2025, according.
The researchers from MIT and Shanghai Jiao Tong University developed a solar desalination device without a wick — a part that typically needs a lot of cleaning or even replacing due to a buildup of salts. By doing so, they believe they have built a system that could help to address the world's water shortage problem with unprecedented efficiency.— is comprised of several layers that float atop a container of saltwater.
for a natural convective circulation between the warmer upper layer of water and the colder reservoir below," the MIT researchers explain in their statement. In other words, a little warm salt water remains behind after the process, which is then naturally drawn into the rest of the cool water below where it becomes diluted.
Desalination systems have the potential to bring clean drinking water to areas that currently suffer from water scarcities. Last year, the world's first
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