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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>All,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>I’m just playing devil’s advocate here…<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>What is stopping me from scheduling a lower fan BHp that meets say
a 66% loaded filter, but providing a fan motor that can truly handle a fully
loaded filter (even with some safety), assuming I still comply with section 6.5.3.1.2?
Because the 90.1-2007 fan BHp baseline is not tracking of the proposed fan
BHp, this would give me a “better” performing building.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Although I do not see the above approach as honest, nothing is
indicating in 90.1-2007 that this cannot be done. Unless I missed
something…<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><b><i><u><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Again, I’m not supporting this be done, but am curious where
in 90.1-2007 that it clearly calls out this is not to be done.</span></u></i></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>As a side note, I don’t believe the 2008 CA Energy Code even
offers a limitation to the designer not scheduling a lower CFM. The
baseline building tracks the fan energy up to a defined W/CFM, not really
crediting a designer for real fan energy savings (i.e. larger ducts, better
duct design, larger coils (for lower face velocity), etc.). Although a
designer may not get credited for the “lower” fan energy with
scheduling an artificially low fan BHp for a cleaner filter, they may not get
penalized as much as if they scheduled a BHp for a fully loaded filter.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Any thoughts on this? Anyone on the 90.1-2007 committee that
could shed some insight?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Thanks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Ryan<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
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paragraph;mso-element-anchor-horizontal:column;mso-height-rule:exactly'><span
style='color:black'><img width=47 height=62 id="Picture_x005f_x0020_10"
src="cid:image001.jpg@01CACCFE.C9EAACC0"
alt="cid:image002.jpg@01CA226C.BD738F80"></span><span style='font-family:
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mso-height-rule:exactly'><b><span style='font-size:14.0pt;color:navy;
letter-spacing:-.3pt'>R. Ryan Hammond </span></b><b><span
style='font-size:10.0pt;color:navy;letter-spacing:-.3pt'>PE, HBDP, BEMP, LEED</span></b><b><span
style='font-size:10.0pt;color:navy;letter-spacing:-.3pt'> </span></b><b><span
style='font-size:10.0pt;color:navy;letter-spacing:-.3pt'>AP</span></b><span
style='font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></p>
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916.921.1956 x202 </span></b><span style='font-family:"Arial","sans-serif";
color:black'><o:p></o:p></span></p>
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