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<font size="+1">Hig<font size="+1">h efficiency filters increase
costs in many ways,<font size="+1"> </font>not</font></font><font
size="+1"><font size="+1"><font size="+1"><font size="+1"> just </font></font>in
initial cost<font size="+1">. Outside air i<font size="+1">s</font>
expensive too. These<font size="+1"> </font></font></font></font><font
size="+1"><font size="+1"><font size="+1">filters </font></font></font><font
size="+1"><font size="+1"><font size="+1"><font size="+1"><font
size="+1"><font size="+1"><font size="+1"><font size="+1"><font
size="+1">can </font></font></font></font></font></font>start
with a loss of 1/2" clean, and to load them and get your
moneys worth, you will be over 1" SP easy. Tough to do with
an<font size="+1"> FC fan. They also push them for
residential furnaces which would be l<font size="+1">ucky to
do a 1/2" TSP brand ne<font size="+1">w. Everything is a
trade-off. That is why we model, to find the most
efficient design for a certain circ<font size="+1">umstance
and purpose<font size="+1"> and there by the most
economical design<font size="+1"> to buy and run.
Also the change out point is very important too<font
size="+1"> with our high<font size="+1">er
energy costs. Possibly a MERV 7 <font
size="+1">or 8 pre as well<font size="+1">,
magnehelic's </font></font></font></font></font></font></font></font></font></font>for
each bank. <font size="+1">And after all that beautiful
engineering they put an R-2 glass shell aroun<font size="+1">d
it, lol<font size="+1">, <font size="+1">p</font>latinum!</font></font></font>
Sorry I got carried away. Then the bui<font size="+1">lding
manager changes them out at 2"<font size="+1"> because they
are $30/SF. We do our best.</font></font><br>
<font size="+1">Bruce Easterbrook P.Eng.<br>
<font size="+1">Abode Engineering.<br>
<br>
</font></font></font></font></font>
<div class="moz-cite-prefix">On 08/10/2013 10:49 AM, jacob goodman
wrote:<br>
</div>
<blockquote
cite="mid:CANunyskogCULD-R7Nx1Y+fpzdeiJdTHdQvN1EL4-yYAYu_P74Q@mail.gmail.com"
type="cite">
<div dir="ltr">Yea, my LEED points just went from 13 to
6...architect will not be happy. </div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Tue, Oct 8, 2013 at 8:34 AM, jacob
goodman <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:jacobgoodman22@gmail.com" target="_blank">jacobgoodman22@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Thanks for the help Bill, that makes it look
far more reasonable.</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">
<div class="im">On Tue, Oct 8, 2013 at 8:25 AM, Bishop,
Bill <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:bbishop@pathfinder-ea.com"
target="_blank">bbishop@pathfinder-ea.com</a>></span>
wrote:<br>
</div>
<div>
<div class="h5">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-US">
<div>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Jacob,</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">You
need to modify your bhp equation. You
don’t just add the 0.5” - you calculate
“A” per the equation on Table 6.5.3.1.1A.</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Regards,</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Bill</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Franklin
Gothic
Medium","sans-serif"">William
Bishop, PE, BEMP, BEAP, LEED AP
</span></b><b><span
style="font-size:10.0pt;font-family:"Franklin
Gothic
Medium","sans-serif";color:#006600">|</span></b><b><span
style="font-size:10.0pt;font-family:"Franklin
Gothic
Medium","sans-serif"">
Pathfinder Engineers & Architects
LLP</span></b></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Arial","sans-serif"">Senior
Energy Engineer</span></p>
<p class="MsoNormal"><span
style="font-size:5.0pt;font-family:"Arial","sans-serif""> </span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#1f497d">134
South Fitzhugh Street</span><span
style="font-size:9.0pt;color:#1f497d">
</span><span
style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#1f497d">Rochester,
NY 14608</span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#1f497d">T:
<a moz-do-not-send="true"
href="tel:%28585%29%20325-6004"
value="+15853256004" target="_blank">(585)
325-6004</a>
</span><span
style="font-size:9.0pt;font-family:"Arial","sans-serif"">Ext.
114</span><span style="color:#1f497d">
</span><span
style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#1f497d">F:
<a moz-do-not-send="true"
href="tel:%28585%29%20325-6005"
value="+15853256005" target="_blank">(585)
325-6005</a></span><span
style="font-size:9.0pt;font-family:"Arial","sans-serif""></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><a
moz-do-not-send="true"
href="mailto:wbishop@pathfinder-ea.com"
target="_blank"><span
style="font-size:9.0pt;font-family:"Arial","sans-serif";color:blue">bbishop@pathfinder-ea.com</span></a></span><span
style="font-size:9.0pt;font-family:"Arial","sans-serif"">
</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><a
moz-do-not-send="true"
href="http://www.pathfinder-ea.com/"
target="_blank"><span
style="font-size:9.0pt;font-family:"Arial","sans-serif";color:blue">www.pathfinder-ea.com</span></a></span><span
style="font-size:9.0pt;font-family:"Arial","sans-serif""></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:Webdings;color:green">P</span><span
style="font-size:14.0pt;color:green">
</span><span
style="font-size:7.5pt;color:green">Sustainability
– the forest AND the trees.</span><span
style="font-size:18.0pt;font-family:Webdings;color:green">
</span><span
style="font-size:14.0pt;font-family:Webdings;color:green">P</span><span
style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:green"> </span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<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"">
<a moz-do-not-send="true"
href="mailto:equest-users-bounces@lists.onebuilding.org"
target="_blank">equest-users-bounces@lists.onebuilding.org</a>
[mailto:<a moz-do-not-send="true"
href="mailto:equest-users-bounces@lists.onebuilding.org"
target="_blank">equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>jacob goodman<br>
<b>Sent:</b> Tuesday, October 08, 2013
10:18 AM<br>
<b>To:</b> <a moz-do-not-send="true"
href="mailto:equest-users@lists.onebuilding.org"
target="_blank">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] Basline
fan power (again...)</span></p>
</div>
<div>
<div>
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal">Dear Community, </p>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">I'm working on a
baseline system fan power
calculation and am getting some
absurdly high baseline fan powers,
but I can't see where I'm going
wrong. See attached calculations.</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">To start, the
baseline model contains one system
per thermal zone since it is the P<b>SZ</b>-AC
type these are named after the VAV
terminals or thermal zone in the
proposed model. Since the building
and corresponding thermal zones are
small the the pressure drop
adjustment from the MERV 13 filter
on the proposed system seems to make
a huge difference in the resulting
fan powers. </p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">By inputting the
kW/CFM values my baseline heating
system does almost nothing. Also, I
don't think putting a portion of the
power in the exhaust stream would
get rid of the problem completely,
but that is one thing I havn't
tried.</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">Thanks!!!!</p>
</div>
<div>
<p class="MsoNormal">Jacob</p>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</div>
<br>
</div>
</blockquote>
</div>
<br>
</div>
<br>
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