Recirculating natural convection solar still

Details Recirculating natural convection solar still Recirculating natural convection solar still

1980-06-27

1982-08-17

Sever, Frank

Distillation: apparatus

Apparatus

Types

203 49, 203DIG1, B01D 300, F24J 302, C02B 104

Patent

active

043448240

ABSTRACT:
The disclosed invention is a solar still utilizing recirculating air driven by natural convection to evaporate pure water from saline water. The pure water evaporated into the air is removed by a condenser and the condenser also cools the air thereby causing its density to increase. The air density difference within the still, due to temperature differences, causes the air to flow in the desired pattern. This natural convection may be augmented by a fan or fans, if desired, to increase the output of the still. The same air is continuously circulated thereby reducing the thermal losses that occur when moist air is removed from the still. A recirculating pump is the only mechanical device required when the still is in the natural convection mode of operation.

REFERENCES:
patent: 4203805 (1980-05-01), Diggs

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