[Equest-users] HVAC Systems, Roof Modeling

[Matutinovic, Luka]

Regarding Item 3:
 
If you have recessed floor plates (a stepped pyramid in the simplest
sense), you would have to create zones within the lower (larger) shell
that coincides with the exterior wall of the upper (smaller) shell and
only change the roof of the non-exposed zones to ceilings, correct?
This seems very complicated in that you are creating a zoning pattern
independent of your thermal zoning just to stitch shells together.  I'm
running into this issue on a project with varying floor plates and I'm
somewhat stuck on how to sub-zone the lower shell.  For example, on one
elevation the perimeter zone is defined 15 ft. from the exterior wall,
but the upper shell only steps back 6 feet.  My perimeter zone would
therefore have to consist of two sub-zones for the purposes of
roof/ceiling assignment, but thermodynamically they should be treated
the same.  How have the experienced modelers addressed this issue?  Or
is this even an issue I should worry about?
 
Thanks,

Luka Matutinovic, B.A.Sc., LEED(r) AP

Green Building Consultant
 
www.halsall.com 

HALSALL ASSOCIATES LTD. 
Toronto  Richmond Hill  Ottawa  Sudbury 
Burlington  Calgary  Vancouver  Dubai 

'50 Best Workplaces in Canada' 
2008 Globe and Mail

P Please consider the environment before printing this e-mail


 

________________________________

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of
Aulbach, John
Sent: Tuesday, July 29, 2008 1:11 PM
To: Daniel Wilkerson; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] HVAC Systems, Roof Modeling


1) eQuest can TO create a package unit (DX cooling) with hot water coils
for heating. You can even do that in the Schematic Wizard.
 
2) I just created a 10 story shell. Only the top floor has a roof. Only
the top floor of ANY shell has a roof.
 
3) The BEST way to remove a roof is to finally convert to Detailed Edit
mode (you aren't going back to Wizard at this point), go into the .inp
file in the tree directory, and manually change the roof to a ceiling.
 
John R. Aulbach, PE, CEM
Project Manager
Nexant, Inc.
701 West Kimberly Ave., Suite 245
Placentia, CA 92870-6342 USA
Phone: 714-524-4402
Fax: 714-524-4407
email: jaulbach at nexant.com
 

________________________________

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Daniel
Wilkerson
Sent: Tuesday, July 29, 2008 9:27 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] HVAC Systems, Roof Modeling



Hey all,

 

I have two questions: 

 

1)       I have packaged AC units for cooling, but hot water loop
heating.  The only way to select packaged AC units is to say there is no
heating, so I created another HVAC system just for heating.  It appears,
however, that you can only assign one HVAC system to each zone.  Has
anyone had this problem and/or know of a solution (how to have packaged
AC units yet also have hot water heating)?

 

2)       I used two shells for a five-story building: one shell for the
ground floor and another shell for the four upper floors.  Thus, I only
need one roof (above the fifth floor); does eQuest model a roof for
every floor in a shell?  If so, how can I make it model a roof for only
the top (fifth) floor?  

 

Thanks a lot,

 

     -Dan 

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