Patent ID: 7897019
Filing Date: 2011-03-01
Classification: B01D,C02F,Y02A,Y02W,Y10S

Abstract:
1. A natural draft tower having two contiguous open chambers for desalting seawater by distillation comprising: (a) a semicircular solar air heating means vertically angled around the base of a first chamber and having a cross sectional area at least as great as the cross sectional area of said first chamber and of a second chamber having two openings and an inclined surface perpendicular to solar radiation at equinox, (b) and means for feeding heated air through an air-liquid exchange means in said first chamber to produce a moisture-laden air flow through a second opening of said first chamber contiguous with a first opening in said second chamber, (c) said first chamber with a surrounding wall having two openings and having an inlet for said solar air heating means at the base and having an air-liquid exchange means within said chamber with a first opening in said wall below said exchange means and contiguous with one of said openings of said solar air heating means, (d) said second chamber with a surrounding wall having two openings wherein the first opening is open and contiguous to the second opening of said first chamber and having a condensing means and an air discharge opening, and (e) tubular means connected to said condensing means and extending to an ocean depth where ocean water is less than 7° C.