4 ms·
> Based on their calculations, a system with just 1 square meter (about a square yard) of collecting area should be sufficient to provide a family’s daily needs
by boplicity 5y ago
> Based on their calculations, a system with just 1 square meter (about a square yard) of collecting area should be sufficient to provide a family’s daily needs for drinking water, they say. Zhang says they calculated that the necessary materials for a 1-square-meter device would cost only about $4.
If true -- this could be utterly transformative for much of the world.
- timClicks 5y agoThe team hasn't verified that claim https://www.reddit.com/r/science/comments/ssd9vv/comment/hxnzgye/?utm_source=share&utm_medium=web2x&context=3 https://www.reddit.com/r/science/comments/ssd9vv/comment/hxn... > We did not build a family scale prototype, such as 10 sq ft. It would be some efforts for us to scientifically test that scale one with existing testing setups, mostly due to the limiting size of our solar simulator. Our existing waterjet cannot handle that size as well. A tank to work with will be 100L at least for our testing.
- krageon 5y agoIf it cost $4 to build and was at all practical to use, the claim that it is odious to do so would make no sense. As we're led to believe it does make sense, I have trouble believing it costs $4 and that it is practical to use with such a budget.
- achow 5y agoCorollary: 1 square kilometer (0.4 sq miles) patch on top of a sea can sustain 1 million families' needs (~3 million people)!
- londons_explore 5y ago"families needs" is deceptive. There is plain simple drinking water, but that's a tiny amount compared to that needed for washing, farming, and all other uses for water. For example, a person in the USA uses 4 tons of water per day! Yet under 0.05% of that is drunk.