Originally Posted by a64pilot
Yeah unless its the size of a water tower I'd have to see it condense 37 liters a day to believe it.
An airconditioner which moves an incredible amount of air over the evaporator will condense what, maybe a couple of liters?
I spent a lot of time learning
aerodynamics and fabricating propellers
for an airboat, and just the dead-simple math makes you realize this idea leaks
If you just notionally propose that one cubic meter of air
has a few drops of water in it (~3ml, 3% by mass at 30 °C ),
and you could even fantasize about pulling a third of those drops out of that 1 m3
then you could see that to get a liter of h2o you will need to move a lot of air:
1000m3 of air moving past a (bulky) condenser 1m2 in size will,
at 1m/s (~2knots) speed, take 1000seconds to get you that liter.
Understand that 1m/s is not free energy:
you are pushing wind
through it one way or another.
The air needs to be compressed then expanded again
The energy transfer by cooling
alone is huge just to get that 1 liter,
not counting the energy needed to move all the air in the first place (maybe wind).
The idea will work - that much is true - but the dimensions are not realistic.
This would work for about a day or so in the desert you see in the video,
before the ground temperatures equalized.