Desalination plant based on sunlight

摘要

The desalination plant is constructed in such a way that sunlight can enter through a gabled glass roof in a box-shaped case and causes an amount of salt water controlled by float valves to evaporate. Part of the water vapour is able to condense on the glass roof, below which is located a condensation channel. Additional condensation takes place in the feed part to the fresh water vessel. To avoid salt encrustation, a float valve controls a minimum water height; the maximum water height is likewise controlled by a float valve at the inlet. In order that no salt water can pass into the condensation part as a result of failure of the latter valve, a further float valve is provided as a salt water overflow barrier. <IMAGE>