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[EnergyPlus_Support] Re: how does E+ calculate the building total floor area?

Thanks, Griffith, I think I got it now.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Griffith, Brent" <brent.griffith@...> wrote:
>
> It sums up the area of the surfaces that are designated to be a "floor."  It is up to the user to describe the floor geometry in a way that is consistent with their preferred definition for floor area.
> 
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Ke Xu
> Sent: Tuesday, January 24, 2012 11:32 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] Re: how does E+ calculate the building total floor area?
> 
> 
> 
> Thanks for your explaination, Linda.
> This means that E+ sums up all floor areas enclosed by the exterial walls outer surface including area occupied by partition walls because they don't have width in the simulation?
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:EnergyPlus_Support%40yahoogroups.com>, Linda Lawrie <linda@<mailto:linda@>> wrote:
> >
> > From the Zone Field on "part of total floor area":
> > Field: Part of Total Floor Area
> > This optional field defaults to Yes if not specified. The field is
> > used to show when a zone is
> > not part of the Total Floor Area as shown in the Annual Building
> > Utility Performance Summary
> > tables. Specifically, when No is specified, the area is excluded from
> > both the conditioned floor
> > area and the total floor area in the Building Area sub table and the
> > Normalized Metrics sub
> > tables.
> >
> > Remember that walls, partitions, etc in EnergyPlus have zero width.
> >
> > That said, there is currently a Change Request in the developer team
> > about a discrepancy in two reports that report/use floor area.
> >
> > At 09:06 AM 1/24/2012, Ke Xu wrote:
> > >Dear all,
> > >Can anyone here explain a little about how E+ calculates a
> > >building's total floor area in the output report? I tried to search
> > >its definition in the I/O reference, but I can't find it.
> > >
> > >My understanding is that it accounts for the floor area enclosed by
> > >internal surfaces,so it should exclude areas occupied by internal
> > >partitions, exterial walls and any vertical penetrations, such as
> > >elevator shaft. As a result, this number would be different with the
> > >building gross floor area defined in ASHRAE Standard 105, and
> > >Standard Definitions of Building Geometry for Energy Evaluation
> > >released by NREL.
> >
>




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