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    		Essay:

    Building Envelope - components and potential problems

    Excerpt

    "A building's envelope includes its doors, roof, walls, foundation, insulation, seals, and windows. It provides a thermal shell that, if poorly constructed, can leak energy through every component. The concerns of a building envelope include infiltration, exfiltration, solar gains and heat losses through the windows, internal heat transfer, and heat gains and losses through the ceiling, walls, and floor.

    The best technique for designing a high-performance building envelope is to use a computer model. Computer models of buildings can simulate all the interactions of the building components and provide an energy estimate for the building. Energy-10 can provide this information along with guidance on how to build a better envelope that incorporates renewable technologies.

    Many factors influence the energy consumption of the building including climate, orientation, and building function.




    More info of this article can be found on the web at: This link was checked on Dec. 2006http://www.nrel.gov/buildings/highperformance/building_envelope.html





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