...the "Solar Tunnel", is the first of its kind in Europe in that it is the first time the railway infrastructure has been used to generate green energy. The ($21.5 million) project will supply 3300 MWh of electricity annually, enough to power 4,000 trains. [Future Energy: http://futuristicnews.com/category/future-energy/ Solar Energy: http://futuristicshop.com/category/solar_power/]
Trombe wall - Wikipedia
A Trombe wall is a passive solar building technique where a wall is built on the winter sun side of a building with a glass external layer and a high heat capacity internal layer separated by a layer of air. Heat in close to UV spectrum passes through the glass almost unhindered then is absorbed by the wall that then re-radiates in the far infrared spectrum which does not pass back through the glass easily, hence heating the inside of the building.
How Do I Connect 4 Six Volt Batteries To My 12 Volt RV House Battery System
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