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Extraction of water from air

  • US 9,200,434 B2
  • Filed: 11/09/2011
  • Issued: 12/01/2015
  • Est. Priority Date: 11/25/2010
  • Status: Active Grant
First Claim
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1. A structure, adapted for extracting water from air, comprisingan absorbing part and a desorbing part, whereinsaid absorbing part comprises a surface having a thin layer of a flowing hygroscopic liquid in direct contact with air, the thin layer of hygroscopic liquid absorbing water vapor from air to form a hydrated solution;

  • said desorbing part comprises a sandwich-like structure to separate water from the hygroscopic liquid in said hydrated solution,said sandwich-like structure including;

    a) a heated sheet or layer, heated to a temperature above the environment'"'"'s temperature;

    b) a space or layer filled with porous or filamentary material, allowing the flow and substantially even distribution of hydrated solution along the heated layer;

    c) a layer of material, allowing passage of water but preventing passage of the hygroscopic liquid;

    d) a cooled sheet or layer, the temperature of which is decreased relative to the temperature of the heated sheet or layer, allowing water to be removed in liquid form.

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