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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Lars,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Not sure if this is what you’re looking to do. I haven’t
tried this for a chain of more than two zones, but you can specify the outside
air coming from a particular zone in eQUEST using the “OA-FROM-SYSTEM”
keyword. You have to be careful with this to define the OA system before the
system it feeds (i.e. if system 1 has an OA-FROM system2, but system 2 has not
been defined yet in the INP file, you will get an error. <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'>Another thing to watch out for is that when you use the OA-FROM,
I don’t think eQUEST calculates the cooling effect of the ventilation air.
You might have to trick the program into accounting for that using an internal
energy source (process) with a negative value. This is easier with a constant
volume OA supply, but if you really want to you could write a schedule for the
VAV supply – it’s pretty tricky. <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>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto'><b><span style='font-family:
"Garamond","serif";color:black'>Vikram Sami,</span></b><span style='color:#1F497D'>
</span><span style='font-family:"Garamond","serif";color:black'>LEED AP</span><span
style='color:#1F497D'> <br>
</span><span style='font-family:"Garamond","serif";color:black'>Direct Phone 404-253-1466
| Direct Fax 404-253-1366</span><span style='color:#1F497D'> <o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-bottom-alt:auto'><b><span
style='font-family:"Garamond","serif";color:maroon'>L</span></b><b><span
style='font-size:10.0pt;font-family:"Garamond","serif";color:maroon'>ORD</span></b><b><span
style='font-family:"Garamond","serif";color:maroon'>, A</span></b><b><span
style='font-size:10.0pt;font-family:"Garamond","serif";color:maroon'>ECK</span></b><b><span
style='font-family:"Garamond","serif";color:maroon'> & S</span></b><b><span
style='font-size:10.0pt;font-family:"Garamond","serif";color:maroon'>ARGENT</span></b><b><span
style='font-family:"Garamond","serif";color:maroon'> A</span></b><b><span
style='font-size:10.0pt;font-family:"Garamond","serif";color:maroon'>RCHITECTURE</span></b><b><span
style='color:#1F497D'><br>
<br>
</span></b><span style='color:#1F497D'><o:p></o:p></span></p>
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<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>Lars
Fetzek<br>
<b>Sent:</b> Monday, August 10, 2009 9:47 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Exhaust air routes<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hello,</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>
The building floor that I am presently modeling has several conditioned zones
and two unconditioned zones. The conditioned zones are various
offices. The unconditioned zones are restrooms and an electrical
room. The conditioned zones exhaust to each other and, ultimately, to the
unconditioned zones via hallways, doorways, etc. The unconditioned zones
exhaust to the outside (via fans).</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>
How can I explain to eQuest that, for example, conditioned zone A exhausts to
conditioned zone B? Also, how can I explain to eQuest that conditioned
zone D exhausts X% to the electrical room (and thus to outdoor exhaust fans)
and Y% to conditioned zone C?</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>
In case it matters, the ceiling is open and the return ductwork terminates in
one spot. Accordingly, even return air must flow among the conditioned
zones.</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>
Thanks, as always, for your helpful replies.</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Lars
Fetzek, EI</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Phoenix
Engineering Group</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Tampa,
Florida</span><o:p></o:p></p>
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