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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">To All,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Not sure if this helps, but looking at the input file there appears to be a sizable process flow on the secondary chilled water loop with no related load. The schedule of
use is tied to an occupancy schedule which is relatively high and flat. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">I am not sure why this load is on the loop, but removing it makes the numbers seem far more reasonable for the application.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">"Secondary Chilled Wate Loop" = CIRCULATION-LOOP<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> TYPE = CHW<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> SUBTYPE = SECONDARY<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> LOOP-DESIGN-DT = 12<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> PIPE-HEAD = 21.6<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> PRIMARY-LOOP = "Primary Chilled Water Loop"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> LOOP-OPERATION = STANDBY<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> DESIGN-COOL-T = 44<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> COOL-SETPT-CTRL = FIXED<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> LOOP-PUMP = "Secondary CHW Loop Pump"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> HEAD-SENSOR-LOCN = AT-COILS<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">
<span style="background:yellow;mso-highlight:yellow">PROCESS-LOAD = ( 0.001 )<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;background:yellow;mso-highlight:yellow"> PROCESS-FLOW = ( 96.3 )<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;background:yellow;mso-highlight:yellow"> PROCESS-SCH = ( "1FLBldg Occup Sch" )</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> ..<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Sincerely,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><b><span style="font-family:"Calibri",sans-serif">Joseph Lewis<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Energy Analyst<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Vidaris, Inc.<o:p></o:p></span></b></p>
</div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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<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"> Nicholas Caton <Nicholas.Caton@schneider-electric.com>
<br>
<b>Sent:</b> Monday, January 28, 2019 4:05 PM<br>
<b>To:</b> David Eldridge <DEldridge@grummanbutkus.com>; Chapin, Alex N <Alex.Chapin@masonandhanger.com>; Morteza Kasmai <morteza.kasmai@gmail.com>; equest-users@onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] High pumps equivalent full load hours in the model<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">@David Eldridge, Bill Bishop, & Kathryn Kerns:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">
<u>Thank you</u> for your immediate/parallel responses! That’s exactly the sort of discussion & feedback I was hoping to spark and for all of us to learn from.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">I am a couple years distanced today from when I was breathing LEED 365 days/yr as an independent consultant, so I’m keen to keep a pulse on how the standards and rating systems
of the day continue to push the envelope forward on systems engineers and designers.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">I feel the first decade+ of my career was focused on learning to design & specify ever more complex systems and operations. My more recent years have exposed me to repeated
cases of “death by complexity” however, and so I’m bearing back a bit towards questioning the value of some such decisions. In broad terms, I think well-meaning and intelligent engineers can often fall into the trap of designing fighter jets for cab drivers.
Sometimes the most correct energy solution on paper misses the end-users and operators who will make or (emphasis)
<i>break</i> the realized savings. Learning to balance the optimal level of design and operation complexity is an area of focus for me these days. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:red"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Kind regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">~Nick<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#3A7A46"><img width="726" height="9" style="width:7.5625in;height:.0937in" id="_x0000_i1025" src="cid:image001.png@01D4B8B4.834A3690"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#3A7A46">Nick Caton, P.E., BEMP</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#3A7A46"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469"> Senior Energy Engineer</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469"> Regional Energy Engineering Manager<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469"> Energy and Sustainability Services</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469"> Schneider Electric</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">D </span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">913.564.6361
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">M </span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">785.410.3317
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">F </span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">913.564.6380</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">E </span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><a href="mailto:nicholas.caton@schneider-electric.com"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">nicholas.caton@schneider-electric.com</span></a><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">15200 Santa Fe Trail Drive<br>
Suite 204<br>
Lenexa, KS 66219<br>
United States</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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<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"> David Eldridge <<a href="mailto:DEldridge@grummanbutkus.com">DEldridge@grummanbutkus.com</a>>
<br>
<b>Sent:</b> Friday, January 25, 2019 2:39 PM<br>
<b>To:</b> Nicholas Caton <<a href="mailto:Nicholas.Caton@schneider-electric.com">Nicholas.Caton@schneider-electric.com</a>>; Chapin, Alex N <<a href="mailto:Alex.Chapin@masonandhanger.com">Alex.Chapin@masonandhanger.com</a>>; Morteza Kasmai <<a href="mailto:morteza.kasmai@gmail.com">morteza.kasmai@gmail.com</a>>;
<a href="mailto:equest-users@onebuilding.org">equest-users@onebuilding.org</a><br>
<b>Subject:</b> RE: [Equest-users] High pumps equivalent full load hours in the model<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div class="MsoNormal" align="center" style="text-align:center"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">
<hr size="2" width="100%" align="center">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Nick, nothing precluded in the proposed case – these aren’t from the mandatory section – however the baseline is supposed to include the applicable energy efficiency
measures as you’ve described. I think you (Morteza) should follow up with Alex’s comments about how the building is divided and baseline systems assigned.
<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">EFLH means running at full capacity though, so although this system may need to be available year-round or nearly year-round, why aren’t some portions of it closing
down? In a nutshell – I’m not sure the system selection is correct and you may be able to make an end-run on the issue altogether. I unfortunately don’t have time to dig through the model files (or even verify which version of 90.1 is being discussed), but
the setup is not typical for what I’m seeing in practice now (LEED, Green Globes, or not certified), and also not knowing the areas of all these components entering the system selection matrix.<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 with Alex’s point that the corridor system would be separate in the system selection from the retail, and also the residential units. The typical setup
that we’d see in this case is a make-up air unit, potentially DX, and which according to many building codes supplies the same volume of 100% outside air at all times to make up the kitchen (hopefully…), in-unit clothes dryer if applicable, and bathroom exhausts.
It could vary airflow if the exhaust air from the apartments was known to vary. To Nick’s point – that’s a complicated system for a baseline. For the most advanced energy efficiency cases, perhaps a DOAS unit with heat recovery. (One clue would be does the
proposed building also have a DOAS that serves only the apartment stack?) PTAC per floor for corridor area might also be justifiable.
<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">Then the retail unit would be separate – besides different operating schedule the tenant would pay for their own utilities so it is not likely to be combined
with the corridor AHU on a hydronic system. Only in the largest buildings would these end up being hydronic systems with submetering. This will most likely be its own DX VAV or maybe CHW system, it should have its own outside air supply pathway, etc.<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">David<o:p></o:p></span></p>
<div>
<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"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">David S. Eldridge, Jr.</span></b><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#244061">, P</span></b><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">.</span></b><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#244061">E</span></b><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">.</span></b><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#244061">,
LEED AP BD+C, BEMP, BEAP, HBDP</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p></o:p></span></p>
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<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"> Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Nicholas Caton via Equest-users<br>
<b>Sent:</b> Friday, January 25, 2019 12:51 PM<br>
<b>To:</b> Chapin, Alex N <<a href="mailto:Alex.Chapin@masonandhanger.com">Alex.Chapin@masonandhanger.com</a>>; Morteza Kasmai <<a href="mailto:morteza.kasmai@gmail.com">morteza.kasmai@gmail.com</a>><br>
<b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] High pumps equivalent full load hours in the model<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Not to make this more difficult than necessary, but could I take a step back and ask: Can anyone comment regarding what exactly between LEED and/or 90.1 precludes 24/7 hydronic
loop circulation?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">This is NOT an uncommon control scheme to encounter in the real world, and the inherent simplicity of 24/7, constant-speed operations carry some real advantages with respect
to system first-cost, simplicity / troubleshooting, and maintenance over time. <o:p>
</o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">That’s not to say variable flow pumps, demand based on/off controls, and other schemes are a bad idea (I’m regularly implementing such strategies where it pencils out), but
I’ve encountered a number of cases where variable-flow upgrades implemented badly can end up causing more harm ($$$/downtime) than good.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">I am left sincerely interested to learn and understand what exactly the LEED reviewers may be expecting/requiring of hydronic system pumping operations.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">~Nick<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#3A7A46">Nick Caton, P.E., BEMP</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#3A7A46"><o:p></o:p></span></p>
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</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">E </span><a href="mailto:nicholas.caton@schneider-electric.com"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">nicholas.caton@schneider-electric.com</span></a><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p></o:p></span></p>
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<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"> Equest-users <<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>>
<b>On Behalf Of </b>Chapin, Alex N via Equest-users<br>
<b>Sent:</b> Monday, January 21, 2019 7:14 AM<br>
<b>To:</b> Morteza Kasmai <<a href="mailto:morteza.kasmai@gmail.com">morteza.kasmai@gmail.com</a>>;
<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] High pumps equivalent full load hours in the model<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p><span style="color:red">[External email: Use caution with links and attachments]</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Morteza,<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 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.<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">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.<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:11.0pt;font-family:"Arial",sans-serif;color:black">Alex Chapin</span></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"> EIT, BEMP, LEED AP BD+C, O+M
<br>
Energy Engineer </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#BA0C2F">|
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<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"> Morteza Kasmai <</span><a href="mailto:morteza.kasmai@gmail.com"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">morteza.kasmai@gmail.com</span></a><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">>
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<b>Sent:</b> Friday, January 18, 2019 1:29 PM<br>
<b>To:</b> </span><a href="mailto:equest-users@lists.onebuilding.org"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">equest-users@lists.onebuilding.org</span></a><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><br>
<b>Subject:</b> [Equest-users] High pumps equivalent full load hours in the model<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#274E13">Hello all,</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#274E13"><o:p></o:p></span></p>
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<span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#274E13"><o:p> </o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#274E13">I received following LEED review comment:</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#274E13"><o:p></o:p></span></p>
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<span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#274E13"> </span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#274E13"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:DejaVuSans;color:#444444">“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:11.0pt;font-family:"Calibri",sans-serif;color:#274E13"><o:p></o:p></span></p>
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<span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#274E13"> </span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#274E13"><o:p></o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#274E13">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:11.0pt;font-family:"Calibri",sans-serif;color:#274E13"><o:p></o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#274E13"> </span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#274E13"><o:p></o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#274E13">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:11.0pt;font-family:"Calibri",sans-serif;color:#274E13"><o:p></o:p></span></p>
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<span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#274E13"><o:p> </o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#274E13">Thank you for your help,</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#274E13"><o:p></o:p></span></p>
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<p style="margin-bottom:0in;margin-bottom:.0001pt"><span style="font-family:"Arial",sans-serif;color:#006600;letter-spacing:.15pt">Morteza Kasmaei<br>
Senior Architect</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#006600">LEED AP BD+C, GGP</span><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#006600"> </span></b><o:p></o:p></p>
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