Once you add electricity into the mix there are a lot of options, though a peltier is so inefficient at what it does that you’d be better off using the electricity to power a refrigeration loop to “dehumidify” the air the old-fashioned way.

Yep, I think the “cleverness” here is that it isn’t fully passive strictly speaking, it requires some human input on a regular basis to meet the posted numbers. Namely, you have to open and close the little chamber at the correct interval, and squeegee the water into the collection material every so often with that French press-like thing on the top.

But maybe we’ll at least get transparent aluminum out of it.

Looking forward to another fun read!