Vorrichtung zum Entsalzen von Meerwasser

摘要

The seawater to be desalinated is sprayed, in a finely divided manner, by means of nozzles (3) against a bottom side (1b) of a plate-shaped element (1). The element (1) is, for example, an aluminium plate which forms a heat transfer medium and is exposed through covering glass sheets (15) to solar radiation in a manner tracking the sun. The water sprayed onto the surface (1b) is distributed two-dimensionally over the element (1) and is evaporated by the heat stored in this element. The evaporated water passes through an outlet (27) to a condenser (10) in which the water vapour is condensed and is finally available at an outlet (12) as fresh water, for example for irrigating green (planted) areas. The seawater to be desalinated is preferably sprayed at predetermined intervals for only a few seconds against the bottom side of the element (1). To clean the element (1), seawater is sprayed against the bottom side of the element (1), for example every hour for about 1 to 1.5 minutes and, as a result, deposited salt and impurities are washed away.