[Equest-users] External Adiabatic

Arpan Bakshi arpanbakshi at gmail.com
Thu Apr 28 20:28:58 PDT 2011


As you know, App-G does not provide guidance for if/how neighboring
buildings are modeled as long as the decision is consistent in both baseline
and proposed cases. Would be curious to hear about the approach others take
to this, e.g. model both with and without and then choose the most
beneficial option, as far as PRM.



On Thu, Apr 28, 2011 at 7:27 PM, Lyle Keck <lkeck at aeieng.com> wrote:

> I know of a work-around to make an exterior surface (wall/flr/roof) into an
> adiabatic surface if you already have an adiabatic surface somewhere in your
> model.
>
>
>
> These instructions are for detailed mode and I will try to explain them as
> clearly as I can.
>
>
> So let’s say you have an existing adiabatic/interior surface in your model,
> we will call this surface INTERIOR-1 for reference.
>
> Let’s name the current exterior surface that you would like to make
> adiabatic/interior surface EXTERIOR-1 for reference.
>
>
>
> First start by selecting surface EXTERIOR-1 in the project tree under
> ‘building shell’. Right click this surface and select properties. On scrap
> paper, copy the parent space as well as all of the information under
> location & geometry (loc/poly/x/y/z/Azimuth/area/height/width/tilt/ etc..).
> This will allow you to recreate the surface you wish to change in exactly
> the same shape and location. Exit out of EXTERIOR-1 properties.
>
>
>
> Next, click on the existing adiabatic/interior surface named INTERIOR-1 and
> select ‘create another interior wall’.  Name the new interior wall name
> something close to the name for exterior-1 or the surface you wish to
> replace. Select the parent space that you copied down for EXTERIOR-1. For
> create option, select copy an existing component and select INTERIOR-1 from
> the dropdown. Click ok.  A new interior surface properties box should come
> up and you should see ‘adiabatic’ selected under surface type.  In this new
> box, copy all of the location and geometry information that you took down
> for EXTERIOR-1. Sometimes the correct info will already be there and
> sometimes you will have to input the values you copied down (depending on if
> it’s a space polygon or not?). Click OK.
>
>
> TADAA! You should now have an adiabatic interior surface in exactly the
> same place as the exterior surface you were trying to change.  Once you are
> sure the surface is correct, delete the original EXTERIOR-1 as you will have
> two identical surfaces on top of each other.
>
>
>
> I hope this helps, I have used this method to make adiabatic interior
> surfaces for models with multiple shells as well as models that are adjacent
> to existing buildings.
>
>
>
>
>
> *Lyle Keck**  *
> SustainablE Systems Analyst
>
>
>
> *AEI* | AFFILIATED ENGINEERS, INC.
> Westlake Center Office Tower, 1601 Fifth Avenue, Suite 1400 | Seattle, WA
>  98101
>
> P: 206.256.0800 | F: 206.256.0423
> lkeck at aeieng.com  |  *www.aeieng.com*
>
>
>
>
>
>
>
>
>
>
>
> *From:* Mark Darrall [mailto:MDarrall at a2so4.com]
> *Sent:* Wednesday, April 27, 2011 1:56 PM
> *To:* Deepika; Arpan Bakshi
>
> *Cc:* equest-users
> *Subject:* Re: [Equest-users] External Adiabatic
>
>
>
> I like that. It’s elegant. eQ still wanted Constructions and Layers, so I
> set the overall U to 0.001 and used an interior wall construction.
>
>
>
> Thanks!
>
>
>
> MARK DARRALL, AIA, LEED AP BD+C, NCARB
> Senior Project Manager
>
>
>
> [image: a2so4-email]
>
>
>
> DESIGN ENRICHING LIFE // LIFE ENRICHING DESIGN
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>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Deepika
> *Sent:* Wednesday, April 27, 2011 10:13 AM
> *To:* Arpan Bakshi
> *Cc:* equest-users
> *Subject:* Re: [Equest-users] External Adiabatic
>
>
>
> I think the u value can be changed to 0.001 to male the wall with almost
> zero heat transfer when in detailed mode. I tried doing that n it worked.
>
>
> On Apr 27, 2011, at 7:06 AM, Arpan Bakshi <arpanbakshi at gmail.com> wrote:
>
> Yes, the problem here is I am deep into detailed mode. Looks like we have
> to crack open the text edit again.
>
>
>
> Thanks
>
> Arpan
>
>
> On Apr 27, 2011, at 9:55 AM, "Chris Swanson" <cswanson at rdfa.com> wrote:
>
> See below.  Nick gives a good explanation when I posed the same question a
> couple weeks ago.
>
>
>
> Chris Swanson, EI
>
> Mechanical Design Engineer
>
> Roger D. Fields & Associates
>
> (614) 451-2248
>
>
>
>
> -------------------------------------------------------------------------------------------------------------------
>
> “A suggestion for you both:
>
>
>
> Right click any side of a shell during DD wizards at the zone definition
> screen (after any custom footprint/zoning patterns) to make that wall
> section “entirely adiabatic.”  This sidesteps making any extra
> shells/systems and avoids having to back any figures out later.  Screengrab
> following illustrates where I’m talking about – results in the background.
>
>
>
> You can accomplish the same net effect in detailed mode in various ways,
> but I think this is probably the easiest/fastest approach if you know from
> the start you want to model only part of a building with exterior
> exposures.
>
>
>
> <image001.png>
>
>
>
> Best of luck!
>
>
>
> ~Nick
>
>
>
> <image002.jpg>
>
> * *
>
> *NICK CATON, E.I.T.*
>
> PROJECT ENGINEER
>
> Smith & Boucher Engineers
>
> 25501 west valley parkway
>
> olathe ks 66061
>
> direct 913 344.0036
>
> fax 913 345.0617
>
> www.smithboucher.com* *
>
>
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Bruce
> Easterbrook
> *Sent:* Wednesday, April 06, 2011 9:58 AM
> *To:* Chris Swanson
> *Cc:* equest-users at lists.onebuilding.org
> *Subject:* Re: [Equest-users] How to model part of a building?
>
>
>
> You have the right idea.  Depending on the building of course, but I try to
> lump the part you aren't concerned about onto one AHU, and default
> everything in that portion.  You are only concerned about the intersecting
> wall and it's condition.  Add your other AHU's and zoning for the portion
> you want to work on.  With the one extra AHU is makes it relatively easy to
> back out its numbers from the building analysis and you are left with what
> you want.
> Bruce Easterbrook P.Eng.
> Abode Engineering
>
> On 06/04/2011 10:15 AM, Chris Swanson wrote:
>
> Hello all,
>
>
>
> I’m looking for recommendations of how to model just one section of a
> building in eQUEST.  Three sides are exterior walls, while the fourth is
> connected to the rest of the building, and therefore next to a conditioned
> space.  Would the best method be to just use two separate shells (1 – the
> building “wing” I’m analyzing, 2 – the rest of the building), although I’m
> only concerned with one of them?  Is there a better way to do this?  I’m
> hoping someone can point me in the right direction.
>
>
>
> Thanks,
>
>
>
> *Chris Swanson, EI*
>
> Mechanical Design Engineer
>
> Roger D. Fields & Associates
>
> Columbus, Ohio 43220-2777
>
> E-mail: cswanson at rdfa.com>
>
>
>
>
>
>
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>
> -----Original Message-----
> From: equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] On Behalf Of Arpan Bakshi
> Sent: Wednesday, April 27, 2011 9:48 AM
> To: equest-users
> Subject: [Equest-users] External Adiabatic
>
>
>
> I can't find this thread I remember seeing about turning an exterior
> surface adiabatic where new construction meets existing building, ideas?
>
>
>
>
>
>
>
>
>
> Arpan Bakshi, LEED AP BD+C
>
> YRG sustainability
>
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-- 

*
*
*

Arpan Bakshi  LEED AP BD+C
*
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