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<p class="MsoNormal">I have no direct answers but a few scattered but related thoughts / commiseration:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In recent years I’ve been avoiding the WSE “chiller” altogether (in doe2.2), and getting by with defining WSE operations with EQUIP-CTRL and LOAD-MANAGEMENT (paired with a “dummy” chiller with a relatively amazing EIR to reflect only associated
pumping/fans/head) to *<b>approximate</b>* integrated vs. non-integrated control schema. It has been my sense that even with the (doe2.2.) WSE “chiller” behavior is close to “correct,” the combination of other limitations & the extra flexibility of the EQUIP-CTRL
approach made “rolling my own” chiller a more attractive option.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I also have not yet had the project cross my desk to allow exploring this in more depth with doe 2.3 (came close a few months ago but had no time to explore new solutions!), but it does seem surprising they would eschew non-integrated WSE
behavior entirely in an effort to provide integrated options. I’m also often in the position of evaluating existing non-integrated systems for replacement, upgrades to permit integrated operations, or simply for calibration.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It would be my intuition (and comfort zone, admittedly) to try an EQUIP-CTRL/LOAD-MANAGEMENT setup first as well for the non-integrated case. Perhaps diving into the “integrated” hourly operations, OADB, and delivered cooling capacity
between your WSE & other chiller(s) can inform you of a reasonable “cutoff” temperature to appropriately limit free cooling as may occur with an “all or nothing” approach?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Kathryn’s suggestion to use the airside/system economizer inputs only is a fresh/interesting concept to me, but when I pulled up the associated SYSTEM input reference in doe2.3 mode to explore further, that version of the reference manual
leads the entry with the following emboldened line: “<b>DOE-2.2 feature not currently implemented in DOE-2.3.”
</b> All roads lead to 2.2?<b><o:p></o:p></b></p>
<p class="MsoNormal"><img width="473" height="68" style="width:4.927in;height:.7083in" id="_x0000_i1027" src="cid:image003.png@01D24958.91E688C0"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This seems heavily implied but one extra curiosity: From your prodding (documentation does suggest this), does the WSE chiller in doe2.3 *entirely* ignore the associated SERIES/PARALLEL inputs for the loop?
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best of luck Fred!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">~Nick<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#3A7A46"><img width="722" height="9" style="width:7.5208in;height:.0937in" id="Picture_x0020_1" src="cid:image001.png@01D24956.653FF0B0"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#3A7A46">Nick Caton, P.E., BEMP</span></b><span style="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>
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</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469"> Schneider Electric</span><span style="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
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</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="color:#1F497D"><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="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Equest-users [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Kathryn Kerns via Equest-users<br>
<b>Sent:</b> Wednesday, November 23, 2016 12:37 PM<br>
<b>To:</b> Porter, Frederick NOR <fporter@noresco.com><br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] DOE-2.3 Water Side Economizers - We still need "Non-Integrated"<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">This is just a thought, but in the past I have used the water side economizer function that appears in the HVAC menus instead of using the water side economizer chiller. I view this function as working the same
way as adding a separate DOA for OSA control to each AHU when I really have only one DOA serving many AHUs. You have to be careful to turn some items off, like eliminating the pressure drop for an extra AHU coil, etc., but there are a number of menu selections
available to tailor the economizer to your needs.<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">You might try that.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#262626">Kathryn Kerns, LEED AP<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#595959">Systems Specialist<span style="font-variant:small-caps"><o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="font-size:2.0pt;font-family:"Arial",sans-serif;font-variant:small-caps;color:#0070C0"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#005FAA">BCE Engineers, Inc.<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#005FAA">P</span></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0070C0">
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#595959">253.922.0446</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#404040">
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#595959">|</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#7F7F7F">
</span><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#005FAA">W</span></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#7F7F7F">
</span><span style="color:#1F497D"><a href="http://www.bceengineers.com/"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#595959">bceengineers.com</span></a></span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#404040"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#595959">6021 12<sup>th</sup> Street E, Suite 200, Fife, WA 98424</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#262626"><o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Porter, Frederick NOR via Equest-users<br>
<b>Sent:</b> Wednesday, November 23, 2016 10:11 AM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] DOE-2.3 Water Side Economizers - We still need "Non-Integrated"<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">All,<o:p></o:p></p>
<p class="MsoNormal">It appears that the WSE “chiller” was changed in the beta of DOE-2.3 included with eQ build 7173. It can/will now operate to augment the other chillers (“integrated”, “series”), instead of turning off when its capacity is inadequate to
meet the loads (“non-integrated”, “parallel”).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">However, the world is full of non-integrated WSEs, and despite certain prescriptive codes, there is still a need to evaluate them for new construction. I tried some Equip Ctrls and Load Mgmts, but these attempts resulted in either simulation
errors (inadequate capacity) or the attempted “non-integrated” WSE operating when I didn’t want it to. In any case, there may be periods when operators disable WSE operation, so if a CHW EC list does not include the WSE, it should not come on.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There needs to be: <o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>clear documentation of how to model the new component with Load Mgmt and Equip Ctrls to perform that way<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>and/or some keywords in the WSE definition to simulate non-integrated operation
<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>and/or a separate “non-integrated” WSE “chiller” type<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Fred<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="color:black">Fred Porter, BEMP, LEED</span><span style="color:#1F497D">©</span><span style="color:black"> AP<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-bottom:2.0pt"><span style="color:#7F7F7F">Principal Engineer<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:2.0pt"><span style="color:#7F7F7F">Sustainability Services<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="color:#005DAA">NORESCO<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#7F7F7F"><a href="mailto:fporter@noresco.com">fporter@noresco.com</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#807F83"><a href="http://www.noresco.com/">www.noresco.com</a></span><span style="font-size:9.0pt;color:#807F83"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:8.0pt;color:#7F7F7F"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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