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Posted by Eeyore on April 17, 2009, 6:55 pm
 


Van Chocstraw wrote:


See this.
http://en.wikipedia.org/wiki/PS10_solar_power_tower

Graham




Posted by Eeyore on April 17, 2009, 7:52 pm
 


Van Chocstraw wrote:


They are.

Graham



Posted by Ludovicus on April 17, 2009, 8:07 pm
 
It's better lens in form of circular domes. The lens are made of two
concentric
spherical zones full of water. So, there is not problem with the sun
position.
Ludovicus

Posted by Eeyore on April 17, 2009, 8:27 pm
 

Ludovicus wrote:


Can you explain that in more detail ?

Graham


Posted by Ludovicus on April 18, 2009, 3:18 pm
 
Convex lens concentrate the sun rays in a small region.
If you make two concentric domes of plexiglass with the external
dome spherical, of larger radius than the internal (spherical zone),
you can fill up the space between the domes with water and so to have
a lens with 10 meters or more of diameter.
Ludovicus




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