Peacmar,
It really depends on your dehumidification needs and available resources. It should be fairly simple to run a liquid loop like the university did. Rig up a swamp cooler indoors and fill it with salt. When the salt hydrates, run the fluid outdoors to a solar regenerator. Some sort of concentrator would work well with this type of setup, i.e. evacuated tube collector or parabolic trough. It would generate the high temperatures one would need to evaporate or boil the water out of the salt.
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