The waterfall idea looks pretty interesting to me.
Has anyone found info about the percentages of dissolved CaCl2 in water to make this thing work? Seems there should be some kind of chart that would indicate the range of CaCl2 per water that would be effective in a 'waterfall' setup.
This waterfall setup with solar drying, would be a good combo for areas with abundant sun AND excessive humidity... it would suit quite a few EcoRenovaters!
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BTW, CaCl2 has also been used in some of the more successful Phase Change Material thermal energy storage studies... but that would be a topic for another thread.
-AC