<div dir="ltr"><p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif;color:rgb(39,78,19)">Nick,</span></p>
<p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif;color:rgb(39,78,19)">Thank you so much. You
solved my problem. I am always learning from your comments.</span></p>
<p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif;color:rgb(39,78,19)">Regards,</span></p>
<p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif;color:rgb(39,78,19)">Morteza</span></p></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr"><img src="https://lh6.googleusercontent.com/Uuukta80GuFfvKouzA0mdSvUXqml7MtSwSiw-evuGMU=w147-h43-p-no"><br>
<div><div><div><br></div></div></div></div></div>
<br><br><div class="gmail_quote">On Tue, Sep 3, 2013 at 1:01 PM, Nick Caton <span dir="ltr"><<a href="mailto:ncaton@smithboucher.com" target="_blank">ncaton@smithboucher.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="blue" vlink="purple">
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hi Morteza!<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p><u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><span>1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Recognize there are separate rules/requirements to determine power for system supply/return fans (Pfan), and for terminal unit fans. The rules you
cited regarding minimum flow fraction and 0.35 W/CFM are specific to the fans in the terminal units. Power for the associated supply fan delivering pre-reheat air to those terminal units is determined through the “Pfan” procedures. I advise reviewing the
associated passages in 90.1 appendix G to ensure you understand what others’ spreadsheets are replicating before proceeding. This will help you to utilize such tools correctly and effectively.<u></u><u></u></span></p>
<p><u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><span>2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">There are two means of specifying fan power in eQuest – you may use one or the other. Coming out of the wizards, by default eQuest will start with
the ESP/fan+motor efficiency inputs. To instead utilize the kW/CFM inputs, navigate to the system fan tab, then right click the inputs for ESP/efficiency on the same screen and press ‘r’ or click “restore default” in the context menu. This will switch the
input method back to kW/CFM and an option to manually define the temperature rise across the fan.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Regards,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">~Nick<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><img width="119" height="37" src="cid:image001.jpg@01CEA89B.EA5D3FA0" alt="cid:489575314@22072009-0ABB"></span><b><span style="font-size:11.0pt;font-family:"Stylus BT","sans-serif";color:#2d4d5e"><u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Stylus BT","sans-serif";color:#2d4d5e"><u></u> <u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family:"Stylus BT","sans-serif";color:#2d4d5e">NICK CATON, P.E.<u></u><u></u></span></b></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Calibri","sans-serif";color:#cc9900">SENIOR ENGINEER<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Calibri","sans-serif";color:#cc9900"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2d4d5e">Smith & Boucher Engineers</span><span style="font-size:7.5pt;color:#cc9900"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2d4d5e">25501 west valley parkway, suite 200<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2d4d5e">olathe, ks 66061<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2d4d5e">direct <a href="tel:913.344.0036" value="+19133440036" target="_blank">913.344.0036</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2d4d5e">fax <a href="tel:913.345.0617" value="+19133450617" target="_blank">913.345.0617</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><a href="http://www.smithboucher.com" title="blocked::www.smithboucher.com" target="_blank"><span style="font-size:10.0pt;color:blue">www.smithboucher.com</span></a></span><u><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:blue">
</span></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<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 href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a> [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Morteza Kasmai<br>
<b>Sent:</b> Tuesday, September 03, 2013 9:16 AM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] Problem with Fan Power in the Baseline Model System 6<u></u><u></u></span></p><div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#274e13">Dear Experts,</span><u></u><u></u></p>
<p class="MsoNormal"><i><span style="font-family:"Arial","sans-serif";color:#274e13"> </span></i><span style="font-family:"Arial","sans-serif";color:#274e13">I am straggling to input Fan Power in the baseline model (System 6
- Packaged VAV with PFP Boxes) and have the following issues:</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#274e13">1- In Table 1.4.6 - General HVAC, there is a note for this type of system that requires</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#274e13"> </span><span style="font-family:"Arial","sans-serif"">“All Baseline fans in parallel VAV fan-powered boxes sized for 50% of peak primary airflow
and modeled with 0.35 W/cfm fan power and a minimum flow setpoint of 30% of peak (or minimum ventilation rate) per G3.1.3.14”.<span style="color:#274e13"> </span></span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#274e13">Supply and return air of the system are equal, 49,202 cfm for each. Based on this cfm, supply fan power and return fan power is 17.22 KW (49,202
* 0.35). This number is different with the figure from ASHRAE 90.1-2007 Baseline Fan Power Calculator (The spreadsheet from 7group). In addition, when I input the supply and return cfm and 17.22 KW for both fans in “Table 1.4.7A - Baseline Air-Side HVAC System
Schedule”, it indicates “Allowed Fan Power” to be 55.4 KW and it will be red out with any other numbers input as system fan power.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#274e13"> 2- In eQUEST’s “Fan Power and Control” screen, the input boxes for supply and return design KW/cfm are grayed out (n/) and I cannot input any
data for the fan powers.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#274e13">As always, I would truly appreciate your comments,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#274e13">Morteza</span><u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<p class="MsoNormal"><br clear="all">
<u></u><u></u></p>
<div>
<div>
<p class="MsoNormal"><img border="0"><u></u><u></u></p>
<div>
<div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div></div></div>
</div>
</blockquote></div><br></div>