SOLWA (SOLar Water)
10 March 2011
paolo-franceschettiThe scarcity of drinking water is a crucial issue in a wide part of the world and is the direct cause of conflicts. It is estimated that 1.6 million lives could be saved every year with a direct access to drinkable water was made available.
Dr. Paolo Franceschetti is an Italian engineer who came up with a brilliant idea. He has projected a system to produce drinking water from polluted waters or from waters with a high concentration of salt, using solar power.
The engineer explains that the SOLWA solar still is based on the conversion of the solar beams into heat. Inside a greenhouse, solar beams radiate a salt water basin, heat up the solution and make it evaporate. The vapor condensates in the internal surface of the greenhouse and is collected, whilst the rich salt solution is eliminated. The estimated water production in tropical countries is more than 10 l/m2/day.
Solar power has lots of advantages as it can be used in isolated sites and in terms of installation and maintenance carries relatively low costs. In particular, the SOLWA solar still is even more convenient as it does not require operating or maintenance costs. Moreover, to set up the structure specific technical skills are not required.

For further information please visit this website.

 

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