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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks John, Greg for the Excel advice.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I got LOOKUP to work by shifting the range
of cells for “result_vector” by +1. The only time there is a
problem is if the calculated motor bhp is exactly equal to one of the
selections in the table, which is very unlikely.<o:p></o:p></span></font></p>
<p><b><font size=1 face=Tahoma><span style='font-size:7.5pt;font-family:Tahoma;
font-weight:bold'>LOOKUP</span></font></b><font size=1 face=Tahoma><span
style='font-size:7.5pt;font-family:Tahoma'>(<b><span style='font-weight:bold'>lookup_value</span></b>,<b><span
style='font-weight:bold'>lookup_vector</span></b>,<b><span style='font-weight:
bold'>result_vector</span></b>)<o:p></o:p></span></font></p>
<p><font size=1 face=Tahoma><span style='font-size:7.5pt;font-family:Tahoma'><img
width=730 height=165 id="_x0000_i1032" src="cid:image003.jpg@01CAD63C.34D5A940"><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>~Bill<o:p></o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Grando, John
[mailto:JGrando@cosentini.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, April 07, 2010
9:53 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">Bishop,
Bill</st1:PersonName>; Tomlinson, Scott; equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Equest-users]
Calculating Baseline Fan Power</span></font><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>If you just start the table with:</span></font><font
size=3 face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>BHP Eff</span></font><font
size=3 face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>0 0.825</span></font><font
size=3 face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>and set =vlookup(*,*,2,TRUE) you should
get the results you want.</span></font><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> <o:p></o:p></span></font></p>
</div>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><br>
<!-- Converted from text/rtf format --></span></font><b><font size=2
color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:blue;font-weight:bold'>John Grando</span></font></b><b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial;font-weight:bold'> <font
color=blue><span style='color:blue'>LEED AP</span></font>| <font color=gray><span
style='color:gray'>Mechanical Engineer</span></font></span></font><br>
</b><font size=2 color=gray face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:gray'>Phone: 212-615-3705 | Fax: 212-615-3700</span></font><br>
<font size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:blue'>jgrando@cosentini.com</span></font><br>
<br>
<b><font size=2 color=gray face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:gray;font-weight:bold'>Cosentini Associates - A Tetra Tech Company<br>
</span></font></b><font size=2 color=gray face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:gray'>Two <st1:PlaceName w:st="on">Pennsylvania</st1:PlaceName>
<st1:PlaceType w:st="on">Plaza</st1:PlaceType> - Third Floor - <st1:place
w:st="on"><st1:City w:st="on">New York</st1:City>, <st1:State w:st="on">NY</st1:State>
<st1:PostalCode w:st="on">10121</st1:PostalCode></st1:place></span></font><br>
<a href="http://www.cosentini.com/"><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>www.cosentini.com</span></font></a><br>
<br>
<font face=Arial><span style='font-family:Arial'> </span></font> <o:p></o:p></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> <o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'><o:p> </o:p></span></font></p>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> <st1:PersonName
w:st="on">Bishop, Bill</st1:PersonName> [mailto:wbishop@pathfinder-ea.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, April 06, 2010 5:10
PM<br>
<b><span style='font-weight:bold'>To:</span></b> Tomlinson, Scott;
equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Equest-users]
Calculating Baseline Fan Power</span></font><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Scott,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The note for Table G3.1.2.9 states to use
the design flow rate of the <i style='mso-bidi-font-style:normal'><span
style='font-style:italic;mso-bidi-font-style:normal'>baseline</span></i>
building system to calculate A. There is still the issue of whether or not to
apply the adjustment from Table 6.5.3.1.1B when the baseline system serves a
different area than the proposed system. I’m still trying to decide that
as well. I can think of at least two alternatives:<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;tab-stops:list .5in'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
mso-fareast-font-family:Arial;color:navy'>1.)</span></font><font size=1
color=navy face="Times New Roman"><span style='font-size:7.0pt;font-family:
"Times New Roman";mso-fareast-font-family:Arial;color:navy'>
</span></font><font size=2 color=navy face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:navy'>Apply the pressure drop adjustment to any
baseline system that conditions at least half of the area of a proposed system
that qualifies for the adjustment,<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;tab-stops:list .5in'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
mso-fareast-font-family:Arial;color:navy'>2.)</span></font><font size=1
color=navy face="Times New Roman"><span style='font-size:7.0pt;font-family:
"Times New Roman";mso-fareast-font-family:Arial;color:navy'>
</span></font><font size=2 color=navy face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:navy'>Apply the pressure drop adjustment in a weighted
manner based on the proportional area conditioned by the baseline system
relative to the proposed system.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I think option 1.) would be quicker but
option 2.) more closely reflects the intent of the pressure drop adjustment.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>On a related note, if anybody has figured
out a way to use a VLOOKUP function or equivalent in Excel for looking up motor
efficiency in a baseline P<sub>fan</sub> calculation, let me know. (The
function returns the efficiency of the next smallest motor in the table when
there is no exact match, but G3.1.2.9 requires the efficiency of the next
largest motor to be used.)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Bill<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><font size=2
color=black face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;
font-family:"Franklin Gothic Medium Cond";color:black;font-weight:bold;
mso-bidi-font-weight:normal;mso-no-proof:yes'>William Bishop, EIT, BEMP, LEED<sup>®</sup>
AP </span></font></b><b style='mso-bidi-font-weight:normal'><font size=2
color="#006600" face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Tomlinson, Scott<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, April 06, 2010 4:29
PM<br>
<b><span style='font-weight:bold'>To:</span></b>
equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Equest-users]
Calculating Baseline Fan Power</span></font><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>eQuesters,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Sorry
in advance for a confusing question, but determining baseline system fan power
is terribly confusing to me. I am currently using ASHRAE 90.1 –
2007.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>According
to section G3.1.2.9 I need to calculate fan power=(bhp*746)/(fan motor
efficiency) for a system 7.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>According
to Table G3.1.2.9 I need to calculate bhp=CFM(s)*.0013+A for a system 7.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>According
to Table 6.5.3.1.1A I need to calculate A=Summation of [PD*CFM(d)/4131] where:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>PD=
each applicable pressure drop adjustment from table 6.5.3.1.1B in wc and<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>CFM(d)=
the design airflow of each applicable device from table 6.5.3.1.1B<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>So
basically I take the airflow rates from my <u>design building</u> systems and
the pressure drops from my components in my <u>design building</u> systems to
figure out what my baseline building break horsepower will be. What if I
have systems serving multiple floors in my design building? Since 90.1
requires me to have a system per floor in my baseline building how would I
handle this? What if I have systems with different components serving
different portions of my design building?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>I
guess a simpler question would be how are people determining baseline fan
power?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Thank
you,<o:p></o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:black;font-weight:bold'>Scott Tomlinson,
PE, LEED-AP</span></font></b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:black'><o:p></o:p></span></font></p>
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