The Solar-AC FAQ : (Category) Heat-driven cooling – absorption, desiccants, Vuilleumier : (Answer) How can I experiment with desiccant cooling?
From the solar-ac archive: Is anyone else on the list interested in trying some of this out? Please speak up or send personal email. I imagine that the basic first experiment would involve some gallon metal cans, an oven, and a 50lb bag of calcium chloride (which should cost $20 or so and be fairly easily available). After heating the cans and capping them, I wonder what’s the right way to try to get some cooling and heating effects? The basic idea would be, sit the cans of dry-ish CaCl2 over *here* and a pan of water over *there*, and enclose them in a bigger container to exclude humidity and perhaps air. Open the lids on the CaCl2 containers, seal it up, and wait. My unknowns are: do we really need a vacuum-tight enclosure in order to produce decent cooling effect … Is there a role for brine or antifreeze solution to get reduced temperature, or would that kill the H2O partial pressure … What’s the ratio of heating to cooling effect and can we control that … Do we need to go to
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