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  • Article - 17 Feb 2008
    Windows play an essential role in the overall energy efficiency of a home. Up to 40% of heat is lost and as much as 50% of unwanted heat is gained through windows. This heating effect is known as...
  • Article - 7 Jan 2008
    Solar power towers convert sunshine into clean electricity. The technology uses many large, sun-tracking mirrors commonly referred to as heliostats to focus sunlight on a receiver at the top of a...

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