I have been reading recently about methods to collect moisture from the air passively and turn it into water. However, is there any attempt currently for small-scale water harvesting?
Methods I have found :
1- air well
2- Zibold's collector (building)
3- heat sinks collecter
By small scale, I am referring to the size of a cup of water. Is there a way to condense water passively (no external power source)?
(Here I am not concerned about the speed of generating water or whether the water is drinkable. I am targeting a method to condense water without supervision or external interference.)