[Equest-users] Equest v3.64 - Plenum and Zones

Carol Gardner cmg750 at gmail.com
Thu Sep 2 09:55:33 PDT 2010


Floor to ceiling height 6 inches LESS than the floor to floor height, i.e.
no plenum.

On Thu, Sep 2, 2010 at 9:18 AM, Charles Land <cland at geo-marine.com> wrote:

>  Floor to ceiling height 6 inches?  The floor to floor height is the
> height of your floor.  Then the floor to ceiling height is the height of
> your conditioned space.  The plenum height is the your floor to floor minus
> your floor to ceiling.   Not only that if your shortening your building and
> not putting in your plenums wouldn’t that decrease your solar load on the
> building.  True your plenum is unconditioned, but wouldn’t part of that
> solar load into the plenum then transfer into your space.  And also if you
> are making your floor to floor height correct and then not entering a plenum
> wouldn’t you then be conditioning a larger volume.
>
>
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Carol Gardner
> *Sent:* Thursday, September 02, 2010 12:10 PM
> *To:* Bishop, Bill
> *Cc:* EQuest
> *Subject:* Re: [Equest-users] Equest v3.64 - Plenum and Zones
>
>
>
> Here's my answer: don't create plenums. Why would you want them unless you
> are doing a UFAD system and that's a whole other story, or wholenother or
> whatever. I just make my floor to floor height one number and my floor to
> ceiling height 6 inches, or the width of the floor slab, less. The DOE help
> manual, you know, has always suggested that you don't need to model plenums.
> It seems like it would save a lot of people a lot of time, space, and heart
> burn to just not include them.
>
> Cheers,
> Carol
>
> On Thu, Sep 2, 2010 at 8:37 AM, Bishop, Bill <wbishop at pathfinder-ea.com>
> wrote:
>
> Mike,
>
>
>
> The eQUEST wizard will create plenums based on the inputs for systems. For
> example, if you use the Schematic Design Wizard and select a VAV system, you
> will get one plenum per floor. If you select Packaged Single Zone you will
> get one plenum per zone. If you use the Design Development Wizard, you have
> the option of selecting System per Floor or System per Zone, which will
> create the plenums accordingly.
>
>
>
> Regards,
>
> Bill
>
>
>
> *William Bishop, PE, BEMP, LEED® AP **|** Pathfinder Engineers &
> Architects LLP*
>
> Mechanical Engineer
>
>
>
> 134 South Fitzhugh Street
> Rochester, NY 14608
> T: (585) 325-6004 Ext. 114
> F: (585) 325-6005
>
> wbishop at pathfinder-ea.com
>
> www.pathfinder-ea.com
>
> P Sustainability – less is more.
>   ------------------------------
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Mike Schaefer
> *Sent:* Thursday, September 02, 2010 8:49 AM
> *To:* EQuest
> *Subject:* [Equest-users] Equest v3.64 - Plenum and Zones
>
>
>
> After setting up an overall buidling footprint and then the zones eQuest
> creates a large plenum that encompasses all zones. How can I divide this
> plenum to correlate to it's respective zone? When I have mutlipy systems I'm
> forced to assign the plenum return to one system instead of the related
> zones.
>
> I'd appreciate any input. Thanks,
>
> *Michael Schaefer - P.E., LEED® AP*
>
>
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>
>
> --
> Carol Gardner PE
>



-- 
Carol Gardner PE
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