[EnergyPlus_Support] Re: Modelling an atrium used for air extract

["JV Dirkes II" <jvd2pe@xxxxxxx>]

Dear Andy,

If you make the atrium the return plenum, you will lose temperature
control for the atrium, i.e., it's temperature will be too high in
summer and too cold in winter.  This is probably not desirable, since
it will underestimate atrium energy use.

I recall past posts that describe a method for allowing air to pass
through a zone, but haven't done that procedure myself.  That approach
sounds more realistic and accurate.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "andystone101"
<andy.stone@...> wrote:
>
> Dear all,
> 
> I'm using EnergyPlus to model a 7 storey office building that has a 
> large atrium which the main office floors open out on to.  Air is 
> supplied to the office spaces using a VAV system (with separate air 
> handling units for each floor) and extracted at the top of the atrium.
> 
> Would it be reasonable to model this by setting the atrium zone to be 
> the return plenum for the systems supplying the office spaces?
> 
> Are there any implications to using the atrium zone as the return 
> plenum for more than one air handling unit?
> 
> Is there a better way to model this type of system (maybe using mixing 
> air flows to transfer air from the office spaces to the atrium, etc.)?
> 
> Thanks,
> Andy
>



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