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Solar power tower: Future or folly?
Publicado em 10/3/2010 às 5:22h. Fonte: CNN
(CNN)-- Cresting the brow of autovia A-49 in Andalusia, 10 miles outside of Seville, the world's first commercial solar "power tower" appears on the skyline like a giant obelisk.
Even on an overcast morning the sun's rays are so intense they illuminate the water vapor and dust hanging in the air to create a giant lattice of white lines that appear to emanate from the eye of the tower.
The tower itself is 115 meters high -- the height of a 14-storey building -- and, bathed in intense white light, the overall effect resembles nothing so much as a religious object.
Valerio Fernandez is director of operations for the PS10 platform and its neighbor, PS20. That means he is responsible for the 624 giant mirrors -- or heliostats -- that reflect the sun's rays into a receiver located at the top of the tower.
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