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This sounds a lot like the concept of a solar powered distiller... As in, heating a container of water with the sun, evaporating the water and then cooling it down to convert it into fresh water...

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It's not. It's an electrodialysis desalinator. I have no idea what in the article gave you the idea it was thermal.

I think their thought process was "It uses the sun to desalinate water, so it must be the same"

But with extra steps and points of failure.

I think you are missing the key point: it takes a fraction of the energy vs. the solar desalinization you are referring to.

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