Solar still

Details Solar still Solar still

1978-01-30

1979-02-27

Bascomb, Jr., Wilbur L.

Distillation: apparatus

Apparatus

Types

202267R, 47 17, 5216913, 203DIG1, 203DIG17, 203 10, B01D 300, C02B 106, F24J 302

Patent

active

041417984

ABSTRACT:
A solar still includes a pair of parallel dikes separated by a ditch, a first sheet overlying the ditch and pair of parallel dikes, the sheet having a pair of edges arranged substantially parallel to, and outside, the dikes, and a second sheet overlying the first sheet, the second sheet having a pair of edges bonded together with the edges of the first sheet to form a water vapor-impervious seal.
A plurality of vertical columnar supports are periodically positioned in spaced relation between the first and second sheets in the center of the ditch to maintain the second sheet in spaced relation above the first sheet. The second sheet has a ridge coincident with the supports and filamentary members which connect the tops of the supports, and angularly slopes on either side thereof toward the outer edges of the dike. A plurality of spacers are positioned between the first and second sheets periodically along the top of each dike and extending slightly outward therefrom to maintain a spaced relationship between the first and second sheets at the outer edges of the pair of dikes. The joined first and second sheets form a trough on the outside of each dike. This solar still is particularly useful in connection with greenhouse structures employed in desert agriculture as disclosed in U.S. Pat. No. 4,040,216.

REFERENCES:
patent: 2807912 (1957-10-01), Bjorksten
patent: 3006818 (1961-10-01), Lappala et al.
patent: 3314862 (1967-04-01), Hay
patent: 3653150 (1972-04-01), Howard
patent: 4040216 (1977-08-01), Grosse

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