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Glazed window

  1. Apr 20, 2005 #1
    A single glazed window of area 3m^2 transmits 400W when there is a temperature difference of 15C across the glass, What is the U-value of the glass??

    Help me, how do i work this out???
     
  2. jcsd
  3. Apr 20, 2005 #2

    Andrew Mason

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    What are the units of U value? What is the power per unit area that is transmitted by the glass? Can you work out the U value from that?

    AM
     
  4. Apr 21, 2005 #3
    No??...what equations do i need for them???
     
  5. Apr 21, 2005 #4

    Andrew Mason

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    I think you can look this up as well as I can. U value measures the energy in watts flowing through a one m^2 area of glass surface having a temperature difference of one degree between the inside and outside. Work it out from that.

    AM
     
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