[Equest-users] SD or DD?

[Nick Caton]

John (or anyone else),

 

If you have the time, would you mind explaining/suggesting the
efficiencies that might come from starting with SD, then converting to
the DD wizards?  Every project I've ever performed has been DD from the
get-go, and when I have explored SD it appears to my untrained eye to be
a kind of linear, simplified version of the DD wizards....

 

To stick my neck out a bit - I fairly regularly have projects where we
start modeling at a stage when space zoning assignments and system
arrangements are quite fluid - it can be handy to define every space in
the wizard zone maps to allow for full flexibility later on, and this
often results in building a shell-per-floor, with each floor receiving a
unique zonal space layout.

 

I wouldn't dream of trying this approach on a high-rise building, but
with projects of up to 3-4 stories, things generally seem manageable.

 

To Ju-Yeon's situation (do understand I am one of the less-experienced
contributors here): 

I would emphasize using as few footprints for your 9-story building as
is acceptable.  I would start in the DD wizards, creating a shell for
each block of floors using the same footprint.  I've read that you can
group your hi-rise shells in a way that simplifies things thermally
without losing accuracy.  

 

For example, if you have three typical floor plans, and they were
ordered as such:  (ground) A,B,A,B,C,C,B,B,B (roof)  - I would suggest
building 3 shells as follows:  [A,A],[C,C],[B,B,B,B,B].  In this way,
you at most need to define only three sets of everything to start, and
you're simultaneously ensuring the lowermost and highest floors, which
receive significantly different envelope loads, have the correct floor
plan tied to them.  Remember the systems you define can ultimately be
tied to any combination of zones across different shells.

 

~Nick

 

 

 

NICK CATON, E.I.T.

PROJECT ENGINEER

25501 west valley parkway

olathe ks 66061

direct 913 344.0036

fax 913 345.0617

Check out our new web-site @ www.smithboucher.com 

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of John
Aulbach
Sent: Tuesday, June 15, 2010 1:06 PM
To: Ju-Yeon Julie Shin; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] SD or DD?

 

Ju-Yeon:

 

You need to be in the DD Wizard to create different floor footprints.
The SD Wizard only allows a single footprint.

 

I would start in the SD Wizard, getting all of your window/wall roof
constructions, general hours of operation, and system type (s). Not
knowingwhat your zones will look like, I would set the zoning pattern to
one zone per floor (for now).

 

Once this is set up, then change to DD Wizard to start creating your
unique floors. Then you can uniquely set put your zones on a floor by
floor basis.

 

Do you mean EVERY floor footprint is different from the others? This is
a very unusual building.

 

John R. Aulbach, PE, CEM

Senior Energy Engineer

________________________________

Partner Energy

1990 E. Grand Avenue, El Segundo, CA 90245
W: 888-826-1216, X254| D: 310-765-7295 | F: 310-817-2745

www.ptrenergy.com <http://www.ptrenergy.com/>  | jaulbach at ptrenergy.com
<mailto:%7C%20jaulbach at ptrenergy.com> 

 

 


 

 

________________________________

From: Ju-Yeon Julie Shin <juyeon519 at hotmail.com>
To: equest-users at lists.onebuilding.org
Sent: Tue, June 15, 2010 1:13:13 AM
Subject: [Equest-users] SD or DD?

Hello everyone I am new to eQUEST and have a question about what to use.
 
The building I am working on has 9 storeys and each single floor
footprint is different.
 
The first three floors are part of a podium building and the rest is
office.
 
In order to create different footprints and finish all the rest of the
eQUEST inputs,
 
1) do I have to build a first floor on the SD wizard and finish all
40ish pages, AND THEN go to the DD wizard 
 
creating new shells for the rest and new HVAC systems, or
 
2) do I just go the the SD wizard from the beginning to create all
different building footprints?
 
Thank you for your help:) 

________________________________

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