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Apparatus for diffusion-gap thermal desalination

United States Patent

September 26, 2017
View the Complete Patent at the US Patent & Trademark Office
A thermal distillation apparatus including evaporation surfaces that are wetted with a solution, and from which at least some of the volatile solvent contained in the solution evaporates, condensers having an external surface in close proximity to, but not touching, a corresponding one of the one or more evaporation surfaces, and on which vapors of the solvent condense, releasing thermal energy that heats a flow of the solution moving upward within the condensers, spacers that prevent contact between the evaporating surfaces and the condensers, wherein spaces between the evaporating surfaces and the condensers are filled with a gaseous mixture composed of solvent vapor and one or more non-condensable gases, and except for diffusion of the solvent vapor relative to the non-condensable gases, the gaseous mixture is stationary.
Lowenstein; Andrew (Hopewell, NJ)
14/ 125,062
June 8, 2012
GOVERNMENT INTEREST This invention was made with Government support under Grant No. DE-FG02-06ER84525 awarded by the Department of Energy. The Government has certain rights in this invention.