[Equest-users] Advice on modelling nine story atrium across shells

[CleanTech Analytics]

Sounds like a task that would be better done with single zone and analysed
using CFD to me..
Possibly use a CFD program then use insight to work around your Equest
model..


*Jeremiah D. Crossett*
*CleanTech Analytics*
*503-688-8951*
*www.cleantechanalytics.com* <http://www.cleantechanalytics.com>


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On Mon, Apr 2, 2012 at 10:28 AM, Jason Quinn <jason.e.quinn at gmail.com>wrote:

> I've modeled a nine story office building which requires different
> shells for several of the levels in the building. It also has a nine
> story (full height) atrium that will be used to extract all of the
> exhaust air (i.e. supply OA to the floors and condition via FC units
> and pull exhaust air out of the top of the atrium). I'm aware that
> eQuest doesn't track air flows but I'd like to best approximate the
> atrium effects on the overall energy use of the building.
>
> Current approach: I've modeled each floor as a separate zone and I'm
> going to delete the floors and turn the ceilings into air-walls and
> link them to the zone above. Currently I'm conditioning all of the
> zones that make up the atrium but at some point I'd like to explore
> not conditioning these zones to more accurately approximate how we'd
> run the building.
>
> Comments?
>
> One alternate approach I've seen proposed is to replace all nine zones
> in the atrium with one full height zone - the advantage is the glass
> on the roof and upper walls can "see" the floor and walls in all of
> the zones of the atrium. However this won't let me later go back in
> and explore any variation of temperature with height. I think this
> might be important as I would expect the air at the top of the atrium
> to be warmer and cause more load on the top floor zones next to the
> atrium.
>
> --
> Jason Quinn
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