[Bldg-sim] eQuest BDL User Expression: Area of Zone

[Brandon Nichols]

All,
 
This started out to be a question, but in the course of making it
intelligible I discovered the answer.
 
My objective was to set the user default expression for fin tube
radiation to something like 30 BTUH per square foot in each zone.
However I couldn't figure out how to get the AREA defined by the SPACE
which corresponds to the ZONE into the zone's user expression... 
 
SPACE is not a parent, grandparent or great grandparent of a ZONE -- and
the #P (Parent) funtion was on the frontier of my BDL knowledge.  So
after a couple hours of headbanging while reading the "KEYWORD
EXPRESSIONS / BDL Functions" subsection of the "Building Description
Language" chapter of the DOE-2.2 Vol 3: 'Topics' manual, I was ready to
throw in the towel and ask the group, as nothing was coming up on an
archive search.  
 
But in the process of writing this e-mail, I chanced to read the #LR
(LocalRef) definition one last time and the light bulb went on.  So here
it is, a very simple user default expression for zone fin tube radiation
HEATING-CAPACITY, set to 30 BTUH per square foot (negative sign req'd by
convention):
  
 
#LR("SPACE","AREA")*-30                         $ as entered into eQuest

 
HEATING-CAPACITY = {#LR("SPACE","AREA")*-30}    $ as stored in the .inp
file
 
 
Enjoy, my head is still hurting...
 
Brandon Nichols, PE, LEED(r) AP
Mechanical
HARGIS ENGINEERS

600 Stewart Street

Suite 1000

Seattle, WA 98101

www.hargis.biz

 

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  _____  

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Virdi
Permana
Sent: Thursday, January 24, 2008 12:38 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Revit and eQuest


Hello All,
I apologize if this question has been address before as I had hard time
finding the thread from the archive.
Can some one describe the step by step process of using revit file in
eQuest?
Any help is greatly appreciated.
Thanks
 

Virdiansyah Permana, EIT

Mechanical Engineer

............................................................

SmithGroup

1850 K Street, NW, Suite 250

Washington, DC 20006

 

t 202.842.2100 d 202.974.0822

f 734.780.8599 

virdi.permana at smithgroup.com <mailto:virdi.permana at smithgroup.com> 

 

"One of the Best AEC Firms to Work For
<http://www.bdcnetwork.com/article/CA6440632.html> "

Building Design + Construction Magazine, May 2007

 

See how we do it. /

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