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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Check all plant and system schedules, make sure they are correct
and agree with occupancy schedules.<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'>Kevin Kyte</span><span style='font-family:"Calibri","sans-serif";
color:#1F497D'>, </span><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>LEED AP<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>RobsonWoese, Inc.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>(T) 716-636-1800<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>(F) 716-636-1856</span><span style='font-size:10.0pt;font-family:
"Calibri","sans-serif";color:blue'><o:p></o:p></span></p>
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color:#1F497D'><a href="http://robsonwoese.com/index.php"><span
style='color:blue'>http://robsonwoese.com</span></a><o:p></o:p></span></p>
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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"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Demba
Ndiaye<br>
<b>Sent:</b> Wednesday, May 14, 2008 1:17 PM<br>
<b>To:</b> Ramana Koti; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] eQUEST - percent of hours outside throttling
range<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Ramana, <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>You seem to have a problem of loop under-sizing: try to increase
the number of wells.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>______________</span><span style='color:navy'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Demba Ndiaye</span><o:p></o:p></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"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Ramana Koti<br>
<b>Sent:</b> Wednesday, May 14, 2008 12:13 PM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] eQUEST - percent of hours outside throttling range</span><o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Dear all,<br>
<br>
I'm working on the energy model for a school building with 43 zones with each
zone connected to a ground source heat pump. Right now the model is for design
development but eventually the same model could be used for LEED.<br>
<br>
I can't seem to get the percent of hours any system zone outside of throttling
range below 48%. The system sizing ratio of all airside systems is currently at
2. As per HVAC design, the depth of ground source loop is 400 ft and I tried
increasing it to 600 ft and that only helps a little.<br>
<br>
In the SS-R report, the undercooled hours for different zones are in the 200+
range while the underheated hours are in the range of 200 to 500. I'm using the
Dodge City, KS weather file.<br>
<br>
Also the current annual energy consumption is as low as 18.1 kBtu/ft2, I know
that will change as the % hours outside the throttling range changes but still
seems very low.<br>
<br>
Thanks for your help,<br>
<br>
RAMANA KOTI Assoc. ASHRAE LEED® AP <br>
Sustainable Building Analyst<br>
<br>
ELEMENTS division of BNIM architects<br>
106 West 14th Street Suite 200<br>
Kansas City Missouri 64105<br>
<br>
d 816.783.1635 f 816.783.1501<br>
<a href="http://bnim.com">bnim.com</a> | <a href="http://elements.bnim.com">elements.bnim.com</a>
<o:p></o:p></p>
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