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<title>Re: [Bldg-sim] Apendix G3.1.2.9</title>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'>Hi Greg,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'>My basic question is which cfm do I take to calculate Pfan? Just
the supply to come up with kW/cfm or sum of supply, return, relief, and exhaust
fans?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'>Thanks,<o:p></o:p></span></p>
<p class=MsoNormal>Fareed Syed EIT, LEED<sup>®</sup> AP<o:p></o:p></p>
<p class=MsoNormal>Mechanical Engineer<b> </b><br>
<img width=200 height=40 id="_x0000_i1027"
src="cid:image001.png@01CACB34.6E619FB0"
alt="cid:image001.png@01C9B834.C9D7E7F0"> <o:p></o:p></p>
<p class=MsoNormal>1811 4 Mile Rd NE<br>
Grand Rapids, MI 49525<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>Phone: 616.361.2664 ext. 3247<br>
Direct: 616.447.3447<br>
Fax: 616.361.1493 <o:p></o:p></p>
<p class=MsoNormal><a href="mailto:syedf@progressiveae.com">syedf@progressiveae.com</a><br>
<a href="http://www.progressiveae.com/">www.progressiveae.com</a><br>
<br>
<br>
<span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<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"'> Gregg Liddick
[mailto:gliddick@theepstengroup.com] <br>
<b>Sent:</b> Wednesday, March 24, 2010 9:18 AM<br>
<b>To:</b> Kimberly@NorthernArchitects.com; Fareed Syed;
bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> RE: [Bldg-sim] Apendix G3.1.2.9<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Hi Kim,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I’m fairly certain that
there’s no specific guidance in Appendix G. What most people do is
break it up so that it’s proportional to the proposed case. For example
if the baseline fan power is 34.5 kW and the actual parameters call for 20 kW
supply and 10 kW return you would break the baseline case up into 23 kW supply
and 11.5 kW return. I hope that helps.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Times New Roman","serif";
color:black'>Gregg Liddick, EIT, LEED<sup>®</sup> AP</span><span
style='color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:black'>The Epsten Group, Inc.</span><span style='color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:black'>429 Edgewood Avenue</span><span style='color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:black'>Atlanta GA 30312</span><span style='color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:black'>Phone: 404-577-0370 ext. 102</span><span
style='color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:black'>Fax: 404-577-1739</span><span style='color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:black'><a href="http://www.theepstengroup.com" target="_blank"><span
style='color:black'>www.theepstengroup.com</span></a></span><span
style='color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#00B050'>Please consider the environment before printing this e-mail.</span><span
style='color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Times New Roman","serif";
color:black'>This transmission is intended exclusively for the individual or
entity to which it is addressed. This communication may contain information
that is confidential, proprietary, privileged or otherwise exempt from
disclosure. If you are not the named addressee, you are NOT authorized to read,
print, retain, copy or disseminate this communication, its attachments or any
part of them. If you have received this communication in error, please notify
the sender immediately and delete this communication from all computers. This
communication does not form any contractual obligation on behalf of the sender,
the sender's employer, or the employer's parent company, affiliates or
subsidiaries.</span><span style='color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<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"'> Kimberly Killian
[mailto:Kimberly@NorthernArchitects.com] <br>
<b>Sent:</b> Wednesday, March 24, 2010 7:36 AM<br>
<b>To:</b> Gregg Liddick; syedf@progressiveae.com;
bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] Apendix G3.1.2.9<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Gregg,<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Is
there guidance on what portion of the Pfan goes to each? What percentage goes
to supply, what percentage to return, etc?<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:12.0pt;
font-family:"Times New Roman","serif"'>Kimberly Killian<br>
Northern Architects, Inc.<br>
207 King Street Suite 3<br>
Burlington VT 05401<br>
T: 802-658-1953<br>
F: 802-658-2975<o:p></o:p></span></p>
</div>
<div style='border:none;border-left:solid black 2.25pt;padding:0in 0in 0in 4.0pt'>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<hr size=2 width="100%" align=center>
</span></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:12.0pt;
font-family:"Times New Roman","serif"'>Original message<br>
From: "Gregg Liddick" <br>
To: syedf@progressiveae.com; bldg-sim@lists.onebuilding.org<br>
Received: 3/23/2010 5:24:39 PM<br>
Subject: Re: [Bldg-sim] Apendix G3.1.2.9<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>No, you use only the fan supply
cfm to calculate the total fan power, then cut that fan power up into supply,
return, etc.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Best Regards,</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal>Gregg Liddick, EIT, LEED<sup>®</sup> AP<span
style='color:black'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:black'> </span><o:p></o:p></p>
<p class=MsoNormal>The Epsten Group, Inc.<span style='color:black'> </span><o:p></o:p></p>
<p class=MsoNormal>429 Edgewood Avenue<span style='color:black'> </span><o:p></o:p></p>
<p class=MsoNormal>Atlanta GA 30312<span style='color:black'> </span><o:p></o:p></p>
<p class=MsoNormal>Phone: 404-577-0370 ext. 102<span
style='color:black'> </span><o:p></o:p></p>
<p class=MsoNormal>Fax: 404-577-1739<span style='color:black'> </span><o:p></o:p></p>
<p class=MsoNormal><a href="http://www.theepstengroup.com/" target="_blank"><span
style='color:black'>www.theepstengroup.com</span></a><span style='color:black'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal>Please consider the environment before printing this e-mail.<span
style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal>This transmission is intended exclusively for the individual
or entity to which it is addressed. This communication may contain information
that is confidential, proprietary, privileged or otherwise exempt from
disclosure. If you are not the named addressee, you are NOT authorized to read,
print, retain, copy or disseminate this communication, its attachments or any
part of them. If you have received this communication in error, please notify the
sender immediately and delete this communication from all computers. This
communication does not form any contractual obligation on behalf of the sender,
the sender's employer, or the employer's parent company, affiliates or
subsidiaries.<span style='color:black'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b>From:</b> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Fareed Syed<br>
<b>Sent:</b> Tuesday, March 23, 2010 5:11 PM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Apendix G3.1.2.9<o:p></o:p></p>
</div>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>Hello All,<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>I am trying to understand the stated appendix for the
baseline model. <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>When I am calculating the Pfan for a system, do I need add
up supply, return, system and room exhaust cfm’s? <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>I got this comment from GBCI: “<i>R<span
style='color:black'>evise the sum of the supply, return, exhaust, and relief fans
for each HVAC system to be equal to the volume calculated in G3.1.2.8 and power
calculated in G3.1.2.9 (where CFM refers to supply air volume).”</span> </i><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>Please let me know your input on how to calculate Pfan.<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>Fareed Syed EIT, LEED<sup>®</sup> AP<o:p></o:p></p>
<p class=MsoNormal>Mechanical Engineer<b> </b><br>
<img border=0 width=200 height=40 id="Picture_x0020_1"
src="cid:image001.png@01CACB34.6E619FB0"
alt="cid:image001.png@01C9B834.C9D7E7F0"> <o:p></o:p></p>
<p class=MsoNormal>1811 4 Mile Rd NE<br>
Grand Rapids, MI 49525<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>Phone: 616.361.2664 ext. 3247<br>
Direct: 616.447.3447<br>
Fax: 616.361.1493 <o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><a
href="mailto:syedf@progressiveae.com">syedf@progressiveae.com</a><br>
<a href="http://www.progressiveae.com/">www.progressiveae.com</a><br>
<br>
<br>
<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
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