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[EnergyPlus_Support] Re: U-Value Calculation



exactly..

ok, this looks really like a case of 'not seeing the forest for the trees' .. 

turns out that I had a typo, the thickness of the gypsum varies about one decimal power... that explains everything..

thanks anyway...




--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Linda Lawrie <linda@...> wrote:
>
> As I remember you add up the individual R values for each layer and 
> take the inverse.  When you do that you come up with .735
> 
> Output:Constructions, Constructions, Materials;
> 
> Will put it in the .eio file.
> 
> At 03:03 PM 11/20/2009, tobias.leibing wrote:
> >Hey there,
> >
> >I have some problems with the U-value calculation of 
> >EnergyPlus.  For some reason the by EnergyPlus calculated U-values 
> >are not correct.
>




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