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<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>
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