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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi Pasha,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Having modeled a few parking garages in various software at this
point, I also do not agree with the LEED representative's suggestion. In
my experience, parking garages typically have daylighting controls to turn off
perimeter lights during the day. This would be tough for a simulation
program to model without creating a separate building for the parking
garage. I know you said that the parking garage would not be utilizing
any ECM's, but I like to leave my options open in case an owner comes back and
decides that the payback is well worth the money spent up-front for controls.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>If you end up incorporating the lighting as a bulk load on the
electrical meter at each building, just remember that you'll need 2 bulk loads
- one for daytime garage lighting and one for night time exterior
lighting. If you're sure they won't be adding ECM's at a later date, then
I think the bulk load idea will work. Just be sure to spend some time on
your lighting schedule because the lighting savings seen between the baseline
and proposed models for a parking garage can be significant and you don't want
to lose any of this benefit. Good luck!<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Kristy Walson, PE, LEED AP</span></b><span style='color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#333333'>Mechanical Engineer / Sustainable Design</span></i><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Pasha Korber-Gonzalez<br>
<b>Sent:</b> Tuesday, October 05, 2010 9:13 AM<br>
<b>To:</b> eQUEST Users List<br>
<b>Subject:</b> [Equest-users] LEED-parking garage question/advice needed<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hi,<br>
<br>
I would like to get a few opinions from some fellow simulators on a modeling
approach for a LEED project. Please share your opinion/advice if
you are interested.<br>
<br>
Project: Four separate buildings that surround an open-air
parking garage structure (all above grade.)--Location is Miami, FL<br>
Intent: All Four buildings (as a whole project) are going for
LEED certification. Each building will be modeled in it's own .pd2 file
as the simulator would prefer to manage the models in this manner versus using
a campus modeling approach in a single .pd2 file.<br>
<br>
USGBC recommendations where that the parking garage should be divided (or
split) into four pieces and 1/4 of the parking garage should be included with
the buildings in each of the separate model files.<br>
<br>
The ISSUE is this: My simulation gut instinct is telling me that
this is a really bad way to include the energy use of a parking garage in a
project model....(I was actually shocked that this was the advice from a LEED
representative.) So I am trying to advise my colleague that
it might be better to not include the actual parking structure (i.e. separate
shell) in each model, but to calculate the lighting use (on a schedule of
operation) for the parking garage lighting and then simply add in that energy
as a kW input on a separate meter and assign a ltg operating schedule to
it. With this approach it would be easier to take the advice
of the LEED folks and input 1/4 of the installed kW in each of the separate
model files, rather than wasting time with building in (& managing) another
shell in each model file. (FYI-there are no other ECM's that will
be accounted for in the parking garage.)<br>
<br>
<br>
What do you think of this approach? Do you think that it is
significant and important to include the "physical" presence of the
parking garage in each of the model files? What approach would you
take?<br>
<br>
Thanks for your time as always...<br>
<br>
Pasha :)<o:p></o:p></p>
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