Shown here is a model of a solar concentrator from Alternative Designs, part of a complex system to store several hours of solar energy. The company intends to build a concentrator similar to this which would be equipped with a Stirling engine, a type of piston engine which runs on heat. The engine would be fitted on the tip of the rod, collecting heat made by concentrating light.
March 3, 2011 9:31 AM PST
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
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