<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Adobe Garamond";}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
p.gmail-m8089150958419901401msolistparagraph, li.gmail-m8089150958419901401msolistparagraph, div.gmail-m8089150958419901401msolistparagraph
{mso-style-name:gmail-m_8089150958419901401msolistparagraph;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
span.EmailStyle19
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:#1F497D;}
span.EmailStyle20
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Pasha,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I’m glad that I can be helpful. Hopefully you can figure it out.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I used eQUEST v. 3.65.7175 in DOE 2.2 mode. I normally use DOE 2.3 mode for my projects but I switched to 2.2 mode since it seemed like that’s what the file was
based on.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I agree that it is tough being on your own little eQUEST “island”. That’s why I try to contribute to this email list when I can.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Alex<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:13.0pt;font-family:"Arial",sans-serif;color:black">Alex Chapin</span></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"> PE, BEMP, LEED AP BD+C, O+M
<br>
</span><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:black">Energy Engineer</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">
</span><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#BA0C2F">|
</span><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:black">Mason & Hanger
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"><br>
</span><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:black">A Day & Zimmermann Company</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">
<br>
<b>O </b>804.521.7072 <br>
4880 Sadler Road, Suite 300 </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#BA0C2F">|
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">Glen Allen, VA 23060
<br>
<a href="http://www.masonandhanger.com/"><span style="font-size:11.0pt;color:#BA0C2F">masonandhanger.com</span></a>
<br>
<br>
<a href="https://www.masonandhanger.com/about/iso"><span style="font-size:11.0pt;color:#403F6F">An ISO 9001 Certified Company</span></a>
<br>
<br>
</span><b><i><span style="font-size:14.0pt;font-family:"Adobe Garamond";color:#BA0C2F">Building a More Secure World ®</span></i></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">
<br>
<br>
</span><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:gray">CAUTION - THIS EMAIL MAY CONTAIN CONFIDENTIAL INFORMATION</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">
<br>
<br>
</span><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:gray">This electronic mail transmission and any accompanying documents may contain information belonging to the sender, which may be proprietary, confidential, and/or otherwise subject
to restrictions on disclosure beyond the intended recipient. This information is intended only for the use of the individual or entity to whom this electronic mail transmission was sent as indicated above. If you are not the intended recipient, any disclosure,
copying, distribution, or action taken in reliance on the contents of the information contained in this transmission is strictly prohibited. If you have received this transmission in error, please call 1-703-955-5702 and delete this transmission. Thank you.</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">
<br>
</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Pasha Korber-Gonzalez [mailto:pasha.pkconsulting@gmail.com]
<br>
<b>Sent:</b> Wednesday, January 13, 2021 2:08 PM<br>
<b>To:</b> Chapin, Alex N <Alex.Chapin@masonandhanger.com><br>
<b>Cc:</b> eQUEST Users List <equest-users@lists.onebuilding.org><br>
<b>Subject:</b> [EXTERNAL] Re: [Equest-users] Unmet hours BOTH htg & clg<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Hi Alex- This is great, thank you! I appreciate your help and taking time to review my model details. I've been stuck on this file for a few months now and my enthusiasm is nill, now. Thank you 1000x<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Regarding your feedback, I'll jump on your suggestions today and check things out. <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I had previously (up until yesterday) been running the AHU as VAV, but decided to throw it over to PIU to see if that helped with anything. I had also been running the T-stats as Reverse Action (system default), but in the warnings the
notes suggested the proportional control so I had switched that too-- so weird that you were able to see a reduction in the throttling hours when you changed it. Are you by chance running your eQuest version is DOE 2.3 mode? I typically haven't been running
my files with 2.3, so if you are doing this I will switch my program to see how this aids me.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I appreciate your insight on the OA ration value at the system level, so I will make those adjustments at the zone CFM/person. I also appreciate and agree with what you stated in item 4 about the zone level airflows, My long past experience
also showed that eQuest doesn't properly distribute airflows from the system level, so I will go back and adjust my inputs properly zone by zone (of course I was being 'lazy' when I set this up and trying to hit the target with a fast & swift approach). Thank
you for the insight and "nudge" to do things right. LOL<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Item 6- good idea on the fan schedules... I know at some point last year I think I had set the fan schedules to -999 operation, but I remember changing them back to on/off scheduling when I was trying to force a balance in the model file.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I know it sounds funny, but it is fun to receive feedback and help from our fellow eQuest modelers, so again Thank you--- our little isolated eQuest 'islands' that we work on sometimes get so lonely and makes us crazy! LOL I'll let you
know how these adjustments work.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Have a great day.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Pasha Korber<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">ph 308-763-1593<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">On Wed, Jan 13, 2021 at 7:14 AM Chapin, Alex N <<a href="mailto:Alex.Chapin@masonandhanger.com">Alex.Chapin@masonandhanger.com</a>> wrote:<o:p></o:p></p>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Pasha,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The unmet load hours are coming from AHU-15. I noticed the following items that may help you debug
the issue:</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="gmail-m8089150958419901401msolistparagraph"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">1.</span><span style="font-size:7.0pt;color:#1F497D">
</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The SS-R report indicates that the zone L2ComputerLabZone is within the 100+ part load range for 8760 hours/yr. This is causing AHU-15 to not be able to reset its supply air
temperature which means you are doing a lot of simultaneous heating and cooling in the other zones, especially at the perimeter. This could reduce unmet load hours and it will also reduce energy use if you put that zone on its own single zone system.</span><o:p></o:p></p>
<p class="gmail-m8089150958419901401msolistparagraph"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">2.</span><span style="font-size:7.0pt;color:#1F497D">
</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">You are using the Powered Induction Unit system type but have all of the zone terminal types set to Std VAV Terminal. You should set any perimeter zones to either Series or
Parallel PIU terminal type. This will allow those zones to pull induced air from warmer core zones with the Std VAV Terminal terminal type. Note that if you want to keep L2ComputerLabZone on AHU-15, applying the correct terminal types may help also since that
zone will have excess heat to share with other zones.</span><o:p></o:p></p>
<p class="gmail-m8089150958419901401msolistparagraph"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">3.</span><span style="font-size:7.0pt;color:#1F497D">
</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">You set OA ratio at the system level of 0.22 but the SV-A report states 0.454. If the correct value is 0.22, then you need to reduce the cfm/person OA input found at the zones
because these will override the system level OA ratio.</span><o:p></o:p></p>
<p class="gmail-m8089150958419901401msolistparagraph"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">4.</span><span style="font-size:7.0pt;color:#1F497D">
</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">You might want to check that the supply airflow and design cooling supply air temperature and zone reheat delta T are sufficient for the loads. You are hard coding the supply
airflow at the system, it might be helpful to set it at the zone if you know the required airflow per zone (I’ve found that eQUEST doesn’t do a great job at distributing airflow to the zones sometimes).</span><o:p></o:p></p>
<p class="gmail-m8089150958419901401msolistparagraph"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">5.</span><span style="font-size:7.0pt;color:#1F497D">
</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Switching the zone thermostat type to Reverse Action from Proportional helps also (I did a quick test and overall unmet hours went from 65 to 55%).</span><o:p></o:p></p>
<p class="gmail-m8089150958419901401msolistparagraph"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">6.</span><span style="font-size:7.0pt;color:#1F497D">
</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">SS-O report seems to show more unmet heating hours in the morning, therefore it may be worth revising the fan schedule to include up to 6 hours of optimum start period (use
a value of -999).</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Good luck.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:13.0pt;font-family:"Arial",sans-serif;color:black">Alex Chapin</span></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"> PE,
BEMP, LEED AP BD+C, O+M <br>
</span><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:black">Energy Engineer</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">
</span><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#BA0C2F">|
</span><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:black">Mason & Hanger
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"><br>
</span><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:black">A Day & Zimmermann Company</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">
<br>
<b>O </b>804.521.7072 <br>
4880 Sadler Road, Suite 300 </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#BA0C2F">|
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">Glen Allen, VA 23060
<br>
<a href="http://www.masonandhanger.com/" target="_blank"><span style="font-size:11.0pt;color:#BA0C2F">masonandhanger.com</span></a>
<br>
<br>
<a href="https://www.masonandhanger.com/about/iso" target="_blank"><span style="font-size:11.0pt;color:#403F6F">An ISO 9001 Certified Company</span></a>
<br>
<br>
</span><b><i><span style="font-size:14.0pt;font-family:"Adobe Garamond";color:#BA0C2F">Building a More Secure World ®</span></i></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">
<br>
<br>
</span><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:gray">CAUTION - THIS EMAIL MAY CONTAIN CONFIDENTIAL INFORMATION</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">
<br>
<br>
</span><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:gray">This electronic mail transmission and any accompanying documents may contain information belonging to the sender, which may be proprietary, confidential, and/or otherwise subject
to restrictions on disclosure beyond the intended recipient. This information is intended only for the use of the individual or entity to whom this electronic mail transmission was sent as indicated above. If you are not the intended recipient, any disclosure,
copying, distribution, or action taken in reliance on the contents of the information contained in this transmission is strictly prohibited. If you have received this transmission in error, please call 1-703-955-5702 and delete this transmission. Thank you.</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">
<br>
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Pasha Korber-Gonzalez [mailto:<a href="mailto:pasha.pkconsulting@gmail.com" target="_blank">pasha.pkconsulting@gmail.com</a>]
<br>
<b>Sent:</b> Tuesday, January 12, 2021 3:26 PM<br>
<b>To:</b> eQUEST Users List <<a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a>><br>
<b>Subject:</b> [Equest-users] Unmet hours BOTH htg & clg</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi guys/gals-- it's been a long time since I've posted, mainly because its been a loooong time since I've been working on energy models.<o:p></o:p></p>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">My skills might be a bit rusty, but you never forget how to 'ride a bike', truly...<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I would like some help with trying to figure out why my hours out of throttling range are coming in like they are-- I've managed to reduce them, but they are not in compliance for
the LEED review yet. And I have virtually "peeled" back all of my design inputs in the HVAC systems (specifically for AHU-15) where the problems are occurring.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Can any of you please help me to take a second look at my file and see if you can find what aspect of the inputs are pushing out my throttling hours? I appreciate any insight/info/time
you can provide, The attached file is in a cold Michigan climate, it has a college schedule, and basic loads with LED lighting system, so nothing internal should be pushing the loads and controls out of throttling range. I'm available to chat about this
if any of you would like too. Ph 308-763-1593.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I've been struggling with getting the hours in range for a few months now... please help. Thank you!<o:p></o:p></p>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</body>
</html>