US 2004/0055866 A1 · Desalinization still

Abstract

A sub-atmospheric pressure desalinating still employs a closed top, opened bottom tank filled with seawater, having a height greater than the height of a column of seawater that can be supported by the pressure at the bottom tank so that a vacuum is formed at the top. A compressor draws vapor from the evacuated area, compresses it and passes it through a heat exchanger within the tank volume to condense the vapor in the tank to generate purified water. Replenishing water is drawn in through the bottom of the tank, passes through a heat exchanger, and is pumped through a heat exchanger coil surrounding the compressor, with the outlet feeding a spray head within the vacuum volume. The compressor and the pump for the intake flow are powered by a wind turbine or wave power.

Claims10

Dependent claims

A sub-atmospheric water desalinization still, comprising:

a closed top tank having the lower part of the tank filled with water to be distilled in the sub-atmospheric vacuum at the top of the tank above the water level within the tank so that water to be distilled vaporizes into the vacuum area;
a heat exchanger disposed within the tank;
a compressor having its inlet connected to the vacuum area and having its outlet connected to the heat exchanger;
and
a natural force powered source powering the compression, whereby the vapor in the vacuum area is compressed and cooled in the heat exchanger to produce relatively pure water.

2 more elements

Dependencies are inferred from the claim text.

Desalinization still

Life of this patent

Desalinization still

Life of this patent

Abstract

Claims10