Condensers

Air Wells (condensers)

An air well or aerial well is a structure or device that collects water by promoting the condensation of moisture from air.
Designs for air wells are many and varied, but the simplest designs are completely passive, require no external energy source and have few, if any, moving parts.Some designs may not be hugely productive, but this is balanced out by having a very long life span, with no maintenance required.

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New breakthroughs at Youtube
Air Well history and Information at Wikipedia
Drinking water from air at DailyKos.com