Re: [EnergyPlus_Support] Re: Warning messages for running 3zvent.idf

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

On 27 Mar 2003, at 5:24, waspoorboy wrote:

> Thanks Mike.
> For the "orphan objects" warnings in the 3zvent run,
> does it indicate that CROSS MIXING and INFILTRATION
> are Not used in EnergyPlus whenever COMIS is involved ?
> [In other words, if "AIRFLOW MODEL, COMIS;" is stated
> in .idf, the CROSS MIXING and INFILTRATION module in
> EnergyPlus is turned off ?]
> The above also applies to VENTILATION and MIXING objects,
> since those four are "grouped", is it correct ?

Correct.


> 
> If WCS is used but zone origin(s) were not (0,0,0),
> will EnergyPlus overide the zone origin(s) to (0,0,0)?
> 

No.  When WCS is used, the surface coordinates are all with respect 
to the building origin, so non-zero zone origins have no impact on 
surface geometry.  Daylighting reference points are always relative 
to the zone origin (even when WCS is used), so non-zero zone origins 
are meaningful with WCS with detailed daylighting.

Mike



> Thanks again,
> Ming  
> 
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Michael J. Witte" 
> <mjwitte@g...> wrote:
> > The warnings are just informative and do not reflect any impact on
> > results.
> > 
> > To get rid of "orphan objects" warnings, just delete the listed
> > objects.  The objects are not used in this simulation and are not
> > needed.
> > 
> > To get rid of the zone origin warning, set the zone origins to
> > (0,0,0).  Changing to relative coordinates with the current zone
> > origins would alter the geometry of the building.  
> > 
> > Mike
> 
> 
> 
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