[EnergyPlus_Support] Re: F-VALUE

["James" <jhuemoe@xxxxxxxxx>]

Here is the warning message received when using the F-factor calculation.

   ** Warning ** BuildingSurface:Detailed="DC77DB", underground Floor Area = 401.88
   **   ~~~   ** ..which does not match its construction area.

This occurs for every slab on grade.



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Linda Lawrie <linda@...> wrote:
>
> Did you review Ground Heat Transfer with EnergyPlus in the Auxiliary 
> Programs document?
> 
> At 01:52 PM 1/26/2011, James wrote:
> >No solution as of yet.  ASHRAE only gives you values for a 
> >completely thermally broken slab which is a nice idea but often not 
> >feasible.  There is really no way to compute these values as far as 
> >I understand.
> >
> >--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "James" <jhuemoe@> wrote:
> > >
> > > Trying to figure out the best method for modeling the foundation.
> > >
> > > How do you properly account for the F-Value when your floor slab 
> > is broken up into many different zones?  I assume that the F-value 
> > only works for the exterior perimeter of the building slab but 
> > energy plus cant seem to differentiate between and interior 
> > perimeter and and exterior perimeter slab.
> > >
> > > Also does anyone know how to calculate the F-Factor to ensure 
> > minimum values are being met?
> > >
> > > Also what are some other methods for modeling a slab on grade?
> > >
> >
> >
> >
> >
> >------------------------------------
> >
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> >
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> >Yahoo! Groups Links
> >
> >
> >
>




------------------------------------

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