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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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Energy Assessment: heat flow

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  1.  
    • CommentAuthortony
    • CommentTimeNov 29th 2008
     
    If I know the temperature gradient and the k value and the area in question cant I work out the heat flow (heat loss) at steady state?
    • CommentAuthorEd Davies
    • CommentTimeNov 29th 2008
     
    Yes.
    • CommentAuthorEd Davies
    • CommentTimeNov 29th 2008
     
    More specifically, if

    k is the conductivity of the material in W·m⁻¹·K⁻¹

    g is the temperature gradient in K·m⁻¹ (or °C/m), i.e., temperature difference divided by material thickness.

    A is the area in m²

    then the heat flow is simply k × g × A. Result will be in watts.
    • CommentAuthortony
    • CommentTimeNov 29th 2008
     
    Thanks

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