Re: [EnergyPlus_Support] a question about ground floor calculations

["Michael J. Witte" <mjwitte@xxxxxxxx>]

Slab is a single-zone model, it cannot handle more than one zone mean air 
temperature object.  Multiple objects should have resulted in errors from Slab.

Mike


On 5 Feb 2008 at 13:05, Simge Andolsun wrote:

> I tried entering the interior mean air temperatures of the 5 zones as 5 objects
> into slab.exe. Slab.exe calculated a sort of mean value as the ground
> temperatures....Do you think we may calculate the ground floor temperatures by
> entering the mean air temperatures of each zone into slab.exe as separate
> objects? If not, for the ground floor calculations, should we always enter a
> single object into slab.exe?
> 
>   Thanks,
>   Simge Andolsun
> 
> "Michael J. Witte" <mjwitte@xxxxxxxx> wrote:
>           It is difficult to say for sure. It depends on how large the
>           temperature 
> difference is, and if the zones are controlled to different temperatures or
> free-floating. One approach would be to use the average of the zone
> temperatures. 
> 
> Mike
> 
> On 27 Jan 2008 at 19:58, Simge Andolsun wrote:
> 
> > I am simulating a 40mx40m, 10 story high building. Each floor is divided into
> > 5 zones. Each zone gives different mean air temperatures. In order to
> > calculate ground floor temperatures, the mean air temperature of which zone
> > should be entered into slab.exe ? Should it be the core zone?...or should I
> > decouple the ground floor from the ground by defining itself as the other zone
> > surface and run the simulations? if so, what should be entered as the ground
> > floor temperatures? Because the mean air temperature of each zone will be
> > different anyway. May anybody help me?
> > 
> > Thanks in advance,
> > 
> > 
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> ========================================================
> Michael J. Witte, GARD Analytics, Inc.
> EnergyPlus Testing and Support 
> EnergyPlus-Support@xxxxxxxx
> 
> 
> 
> 
> 
> 
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========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx





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