Distillation: processes – separatory – Water purification only
Patent
1981-05-08
1984-07-10
Novosad, Stephen J.
Distillation: processes, separatory
Water purification only
203 49, 203DIG1, 202234, 405 36, 165 45, 126436, B01D 300
Patent
active
044591772
ABSTRACT:
A method and an apparatus is disclosed in which solar heated air is drawn down a hole in the earth by a draft from a solar heated convection column located above the surface of the earth, the hot air being initially drawn downwards to a depth at which damp, moist earth is encountered with the hot air thereby evaporating water from the damp earth and producing water vapor and increasing the moisture content of the heated air and as this damp air is subsequently drawn back to the surface by the draft from the same solar heated convection column, it is allowed to contact cooled plates near the surface, the water vapor thereby condensing on the plates from which it is collected for irrigation or other purposes. In various embodiments either vertical or horizontal porous tubes in the ground contact the moist earth to bring the moisture of the earth into contact with the heated air flowing through the tube.
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Hjorth Beverly E.
Novosad Stephen J.
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