Water Production and Water Savings
The Seawater Greenhouse converts sea water into fresh water, providing a unique local desalination capability. The water is condensed from water vapour in the air, in much the same way as dew. It is pure distilled water, produced without chemical treatment. The quantity produced depends on the climate - the hotter and sunnier, the more water.
The air entering the Greenhouse is both cooled and humidified. High humidity and low temperatures (the Greenhouse operates at approx. 90% relative humidity) reduces plant transpiration substantially, by up to 80%. This reduces irrigation requirements. The irrigation rate in Tenerife averaged 1.2 litre/day/m2 against 8 litres/day/m2 used by local farmers.
The impact of a new source of water on a local area can be highly beneficial. In Tenerife, a barren area 'turned green' as seepage from irrigation reversed saline intrusion and enabled new plant growth.
Of even greater importance is the effect the Seawater Greenhouse can have on reducing demand for mains water and reserves of ground water. Around 8-10 litres per m2 per day can be saved which, on a macro scale, will have an immense impact, freeing existing water supply for other uses.
Construction + Materials: http://www.seawatergreenhouse.com/const ... erials.htm