One of my goals out west is to be able to trim my energy usage down to a bare minimum. Also, to recycle as much water as I can.
This post describes the use of the principle of radiative cooling in order to climate control a building and thus use the least amount of energy.
I have a hunch that this principle could work in a concept known as an air well. It condense water passively. Out there, especially during the summer months, it can get fairly humid. I figured that dehumidifiers can collect water, but what if you could do it without electricity? That would be, pardon the pun, "cool".
Update:
Did a little more googling, and found this post on photonic crystals. The post says that the surface temperature can be reduced by 30 degrees. Very interesting. That means on a 100 degree day, this thing can bring the surface temp down to a comfortable 70 degrees.
Bring it on.
Update:
Nature paper here. Not as dramatic as above, but useful nonetheless if it were to be available for purchase. No word on that.
Update:
More info here.
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