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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'>Hello Marty,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'>I would suggest you to calculate the baseline fan energy on a
spreadsheet using 90.1 users manual and use this value for the energy model. I
know trace internally takes the summation of cfm’s and applied appendix
G. Also look for the optimum start option under Systems </span><span
style='font-size:10.0pt;font-family:Wingdings;color:#1F497D'>à</span><span
style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";color:#1F497D'> Options
</span><span style='font-size:10.0pt;font-family:Wingdings;color:#1F497D'>à</span><span
style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";color:#1F497D'> Advanced
Options </span><span style='font-size:10.0pt;font-family:Wingdings;color:#1F497D'>à</span><span
style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";color:#1F497D'>Schedules.
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'>Other strategy what you can adopt is make similar models and run
the model for only one month (Actions </span><span style='font-size:10.0pt;
font-family:Wingdings;color:#1F497D'>à</span><span style='font-size:10.0pt;
font-family:"Segoe UI","sans-serif";color:#1F497D'>Change Load Parameters</span><span
style='font-size:10.0pt;font-family:Wingdings;color:#1F497D'>à</span><span
style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";color:#1F497D'>First
month and last month).<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'>Hope this helps you little bit.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'>Thanks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'>Fareed
Syed EIT, LEED</span><sup><span style='font-size:10.0pt;font-family:"Comic Sans MS"'>®</span></sup><span
style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'> AP<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Segoe UI","sans-serif"'>Mechanical
Engineer</span><b><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>
</span></b><span style='font-size:10.0pt;font-family:"Comic Sans MS"'><br>
</span><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'><img
width=200 height=40 id="Picture_x0020_1"
src="cid:image001.png@01CA5718.9CCCA790"
alt="cid:image001.png@01C9B834.C9D7E7F0"></span><span style='font-size:10.0pt;
font-family:"Comic Sans MS"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Segoe UI","sans-serif"'>1811
4 Mile Rd NE<br>
Grand Rapids, MI 49525<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Segoe UI","sans-serif"'> <o:p></o:p></span></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:9.0pt;
font-family:"Segoe UI","sans-serif"'>Phone: 616.361.2664 ext. 3247<br>
Direct: 616.447.3447<br>
Fax: 616.361.1493</span><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:9.0pt;
font-family:"Segoe UI","sans-serif"'><a href="mailto:syedf@progressiveae.com">syedf@progressiveae.com</a><br>
<a href="http://www.progressiveae.com/">www.progressiveae.com</a><br>
<br>
<br>
</span><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<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"'> trace-users-bounces@lists.onebuilding.org
[mailto:trace-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Snarski,
Marty<br>
<b>Sent:</b> Tuesday, October 27, 2009 2:33 PM<br>
<b>To:</b> trace-users@lists.onebuilding.org<br>
<b>Subject:</b> [Trace-users] Appendix G Fan Energy<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hello, all.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I'm running an energy model (for LEED), and am having a
particular problem with the Fan Energy results. I am using the actual fan
horsepower (for the supply and for the return fans) for the proposed building,
and the Appendix G equation in G3.1.2.9. The results I'm getting for the
proposed design are considerably higher (about 31%) than the baseline
building. This leads me to believe that I may be misinterpreting the
equation. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>As stated in the 90.1 Users manual, the equation accounts
for supply, return, relief, and exhaust fans. However, I've been simply
inputting the Supply CFM into the equation. Given that it accounts for
all fans, should I use the accumulated CFMs for each of those fans (i.e. if I'm
supplying 32,000, and returning 24,000, should I use 56,000 cfm)?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>While I understand TRACE has the automatic baseline fan
sizing capability, I'm not sure I trust it completely, and would like to know
where the calculation comes from.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks for any help you can offer!<o:p></o:p></p>
<p><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>NOTICE<span
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<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
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