<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:#274e13"><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:10pt;font-family:Arial,sans-serif">Alex,<br><br></span></p>
<p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:10pt;font-family:Arial,sans-serif">Thank you so much for
your response, your analysis are very helpful.<br><br></span></p>
<p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:10pt;font-family:Arial,sans-serif">Regards,<br>
Morteza</span></p></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"></div><div dir="ltr"><p style="margin-bottom:0.0001pt;line-height:normal"><font size="1"><span style="color:rgb(0,102,0);font-family:Arial,sans-serif;letter-spacing:0.2px">Morteza Kasmaei<br></span><span style="color:rgb(0,102,0);font-family:Arial,sans-serif;letter-spacing:0.2px">Senior Architect</span><span style="color:rgb(0,102,0);font-family:Arial,sans-serif;letter-spacing:0.2px"><br></span></font></p>
<span style="line-height:115%;font-family:Arial,sans-serif;color:rgb(0,102,0)"><font size="1">LEED AP BD+C, GGP<font style="font-weight:bold"> </font></font></span><br><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br><br></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jan 21, 2019 at 11:21 PM <<a href="mailto:equest-users-request@lists.onebuilding.org">equest-users-request@lists.onebuilding.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Send Equest-users mailing list submissions to<br>
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1. Re: High pumps equivalent full load hours in the model<br>
(Chapin, Alex N)<br>
<br><br><br>---------- Forwarded message ----------<br>From: "Chapin, Alex N" <<a href="mailto:Alex.Chapin@masonandhanger.com" target="_blank">Alex.Chapin@masonandhanger.com</a>><br>To: Morteza Kasmai <<a href="mailto:morteza.kasmai@gmail.com" target="_blank">morteza.kasmai@gmail.com</a>>, "<a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a>" <<a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a>><br>Cc: <br>Bcc: <br>Date: Mon, 21 Jan 2019 13:13:53 +0000<br>Subject: Re: [Equest-users] High pumps equivalent full load hours in the model<br>
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<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Hi Morteza,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">I looked at the file quickly and it seems that there are some changes that you can make to reduce the EFLHs slightly (I was able to get it to 8,146 hours/year
by changing to two-way HW and CHW coils, moving cooling coils to secondary loop, readjusting pump flows and power after other changes, and setting loop operation to demand), but it seems like the underlying cause of the high EFLHs is probably due to having
VAV systems which only serve interior spaces which are probably going to be in cooling mode year round.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Note that I think you can model the corridors on floors with residential as PTACs also. I believe that the reviewer should allow you to be flexible in how you
define the corridor off of residential spaces. This might help reduce the pump EFLHs for primary and secondary chilled water pumps, assuming those VAVs which only serve core spaces are part of what is driving the high EFLHs.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11pt;font-family:Arial,sans-serif;color:black">Alex Chapin</span></b><span style="font-size:9pt;font-family:Arial,sans-serif;color:black"> EIT, BEMP, LEED AP BD+C, O+M
<br>
Energy Engineer </span><span style="font-size:9pt;font-family:Arial,sans-serif;color:rgb(186,12,47)">|
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4880 Sadler Road, Suite 300 </span><span style="font-size:9pt;font-family:Arial,sans-serif;color:rgb(186,12,47)">|
</span><span style="font-size:9pt;font-family:Arial,sans-serif;color:black">Glen Allen, VA 23060
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</span><b><i><span style="font-size:11pt;font-family:"Adobe Garamond";color:rgb(186,12,47)">Building a More Secure World</span></i></b><span style="font-size:9pt;font-family:Arial,sans-serif;color:black">
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</span><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u><u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11pt;font-family:Calibri,sans-serif">From:</span></b><span style="font-size:11pt;font-family:Calibri,sans-serif"> Morteza Kasmai <<a href="mailto:morteza.kasmai@gmail.com" target="_blank">morteza.kasmai@gmail.com</a>>
<br>
<b>Sent:</b> Friday, January 18, 2019 1:29 PM<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] High pumps equivalent full load hours in the model<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:10pt;font-family:Arial,sans-serif;color:rgb(39,78,19)">Hello all,</span><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(39,78,19)"><u></u><u></u></span></p>
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<span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(39,78,19)"><u></u> <u></u></span></p>
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<span style="font-size:10pt;font-family:Arial,sans-serif;color:rgb(39,78,19)">I received following LEED review comment:</span><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(39,78,19)"><u></u><u></u></span></p>
<p class="MsoNormal" style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">
<span style="font-size:11pt;font-family:Arial,sans-serif;color:rgb(39,78,19)"> </span><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(39,78,19)"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt;font-family:DejaVuSans,serif;color:rgb(68,68,68)">“The Baseline model pumps equivalent full load hours (determined by dividing the total annual pumps consumption (45,761 KWH) by the pump peak demand (5.426 KW)
reflected in the simulation output report) is 8,433 hours/year, which is unexpectedly high given the anticipated schedule of operation for the project.”</span><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(39,78,19)"><u></u><u></u></span></p>
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<span style="font-size:11pt;font-family:Arial,sans-serif;color:rgb(39,78,19)"> </span><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(39,78,19)"><u></u><u></u></span></p>
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<span style="font-size:10pt;font-family:Arial,sans-serif;color:rgb(39,78,19)">This is a 9 story residential building with unfinished retail space in the ground floor. Primary HVAC system in the baseline case is PTAC and the secondary system that serves non-residential
spaces is System 7 – VAV with reheat and chilled water. HVAC system in unfinished retail space of the propose model is System 7 as well. Pumps equivalent full load hours for the proposed model is 8,089 hours/year (15,401/1.905), which is close to EFLH of the
baseline case. </span><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(39,78,19)"><u></u><u></u></span></p>
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<span style="font-size:10pt;font-family:Arial,sans-serif;color:rgb(39,78,19)"> </span><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(39,78,19)"><u></u><u></u></span></p>
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<span style="font-size:10pt;font-family:Arial,sans-serif;color:rgb(39,78,19)">Is this high EFLH loads relate to the primary and secondary pumps in both of the models and are justifiable or there is something wrong with the models. Attached are inp and pd2 files
of the baseline model from version 3.65 build 7173.</span><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(39,78,19)"><u></u><u></u></span></p>
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<span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(39,78,19)"><u></u> <u></u></span></p>
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<span style="font-size:10pt;font-family:Arial,sans-serif;color:rgb(39,78,19)">Thank you for your help,</span><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(39,78,19)"><u></u><u></u></span></p>
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<p style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif;color:rgb(0,102,0);letter-spacing:0.15pt">Morteza Kasmaei<br>
Senior Architect</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:Arial,sans-serif;color:rgb(0,102,0)">LEED AP BD+C, GGP</span><b><span style="font-size:10pt;font-family:Arial,sans-serif;color:rgb(0,102,0)"> </span></b><u></u><u></u></p>
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