Solar Empire – Endless War

1. 

   SamIAmSeptember 6, 2010 - 2:10 pm #1

   They do use them, but not configured as you say.

   Just using the glass won’t change the amount of energy.

   The proper way to use it is to put a big (much bigger than the collector) lens well in front of the collector, with the focal length chosen to concentrate the energy onto the collector.
   References :

2. 

   mike1942fSeptember 6, 2010 - 2:54 pm #2

   Yes, of course. Because a fresnel lens, these days, is made of thin plastic, a properly constructed lens can be made that is long and narrow and come to a focus when it is mounted flat or when it is arched. In either case, the lens collects light from a wide area and focuses it on a line where there should be a pipe ideally with a treated surface to absorb as much energy as possible
   References :

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