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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I’d agree with you Mike.<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'>Addendum r revised the reference standard for ARI 340/360 from
the 2000 version to the 2004 version in Section 12 Normative References.<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'>By the way, the older 1989 version of Standard 90.1 had it right
in the first place using Brake HP and not motor nameplate HP for the fan power
limit. It only took them about 18 years to realize they had a problem. Better
late than never.<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'>Also the added credits or adjustment factors were long overdue
too.<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'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:13.5pt;font-family:"Verdana","sans-serif";
color:#1F497D'>Philip S. Leader, PE</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'> <br>
</span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'>Director of Mechanical Engineering <br>
Albert Kahn Associates, Inc. <br>
7430 Second Ave. <br>
Detroit, Michigan 48202-2798<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'> <br>
P: 313.202.7834 <br>
F: 313.202.7334 <br>
E: philip.leader@akahn.com <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><u><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'>www.albertkahn.com<o:p></o:p></span></u></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'>Albert Kahn Family of Companies, </span></b><span
style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D'>founded
in 1895<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'>Architecture, Engineering, Planning, Design and Management<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'><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>
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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@gard.com
[mailto:BLDG-SIM@gard.com] <b>On Behalf Of </b>Michael Tillou<br>
<b>Sent:</b> Wednesday, October 24, 2007 2:39 PM<br>
<b>To:</b> BLDG-SIM@gard.com<br>
<b>Subject:</b> [BLDG-SIM] New Calculation method for Baseline Fan Energy in
Addendum R<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>I think you mean to be referencing ASHRAE 90.1-2004 addendum ac not
addendum r which includes two new methods for calculating fan power
limits. The first looks at total Motor HP which isn't very useful for
energy modeling purposes and the second looks at fan brake-horsepower.
The fan brake-horsepower equations are "(CFM x 0.00094) +
A" and "(CFM x 0.0013) + A" for constant volume and
variable volume systems respectively. CFM is the design airflow rate and
A is the brakehorse power adjustement for various pressure drop
adjustments given in Table 6.5.3.1.1B.</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"TT3443o00","serif";
color:blue'>Mike</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial Black","sans-serif"'>Michael
Tillou, PE, LEED</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial Black","sans-serif"'>Tillou
Engineering, LLC</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial Black","sans-serif"'>Williamstown,
MA 01267</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial Black","sans-serif"'>P:
413-458-9870</span> <span style='font-size:7.5pt;font-family:"Arial Black","sans-serif"'>C:
413-652-1087</span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" align=center>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><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@gard.com
[mailto:BLDG-SIM@gard.com] <b>On Behalf Of </b>Andrew Craig<br>
<b>Sent:</b> Wednesday, October 24, 2007 11:56 AM<br>
<b>To:</b> BLDG-SIM@gard.com<br>
<b>Subject:</b> [BLDG-SIM] New Calculation method for Baseline Fan Energy in
Addendum R</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I
was wondering if anyone out there can explain the new calculation shown for
baseline fan brake horsepower in Table G3.1.2.9 of Addendum R to ASHRAE
90.1-2004? At first glance, the equation doesn’t make sense because
you are subtracting a relatively small number (0.0013+A) from a large number
(CFMs) leaving you with a ridiculously large baseline fan motor brake
horsepower. Am I just reading this wrong or is there a typo?
Isn’t there an easier way out there to calculate baseline fan energy
(please see version 1 of Appendix G for another confusing calculation)?<o:p></o:p></span></p>
<p><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#816D5B'>Andrew Craig, EIT, LEED® AP</span></b> <span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1E1F48'>| </span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#816D5B'>Mechanical
Designer</span><o:p></o:p></p>
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of Choice to the Built Environment for over 35 years</span><br>
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<pre><o:p> </o:p></pre><pre>==================<o:p></o:p></pre><pre>You received this e-mail because you are subscribed <o:p></o:p></pre><pre>to the BLDG-SIM@GARD.COM mailing list. To unsubscribe <o:p></o:p></pre><pre>from this mailing list send a blank message to <o:p></o:p></pre><pre>BLDG-SIM-UNSUBSCRIBE@GARD.COM<o:p></o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>==================<o:p></o:p></pre><pre>You received this e-mail because you are subscribed <o:p></o:p></pre><pre>to the BLDG-SIM@GARD.COM mailing list. To unsubscribe <o:p></o:p></pre><pre>from this mailing list send a blank message to <o:p></o:p></pre><pre>BLDG-SIM-UNSUBSCRIBE@GARD.COM<o:p></o:p></pre></div>
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