Everything about The Seawater Greenhouse totally explained
The
Seawater Greenhouse is an established technology with the potential to create surplus fresh water from
seawater, using a novel form of
greenhouse that also provides ideal food-growing conditions in
arid regions. Three such units have been built so far.
Awards
The technology won the Tech Museum Award for a 2006 project in
Oman, and was a finalist in the 2007 St Andrews Prize for the Environment.
Projects
Proposals for the Seawater Greenhouse include the Sahara Forest Project, a scheme that aims to provide fresh water, food and renewable energy in hot arid regions as well as re-vegetating areas of uninhabited desert. This ambitious proposal combines the Seawater Greenhouse and Concentrated
Solar Power to achieve highly efficient synergies. Concentrated
solar power is increasingly seen as one of the most promising forms of
renewable energy, producing electricity from sunlight at a fraction of the cost of
photovoltaics. By combining these technologies there's huge commercial potential to create a sustainable source of energy, food and water.
The scheme is proposed at a significant scale such that very large quantities of seawater can be evaporated. By using a location that lies below sea level, this can be achieved without pumping and there's an opportunity to capture some of the substantial volumes of residual humidity that leave the greenhouses. A 20,000 hectare area of Seawater Greenhouses will evaporate a million tonnes of seawater per day. If the scheme were located upwind of higher terrain then the air carrying this ‘lost’ humidity would rise and contribute to forming mist, cloud and dew. It would then be possible to harvest this precipitate using fog-nets that can supply tree saplings with water and thereby reverse the process of
desertification, returning barren land to forest.
The scheme was first publicly proposed to a group of energy specialists at the third
Claverton Energy Group
Conference held at the Headquarters of
Wessex Water Plc on
April 13 2008.
Further Information
Get more info on 'Seawater Greenhouse'.
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