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<p class="MsoNormal">Hi Patrick,<o:p></o:p></p>
<p class="MsoNormal">Like Christopher said, you can’t reference children. There may be other ways to do what you’re trying to do without referencing the zone ASSIGNED-FLOW.<o:p></o:p></p>
<p class="MsoNormal">HOWEVER, for single-zone systems that use the CONTROL-ZONE keyword, the control zone is a keyword of the local component (the system).<o:p></o:p></p>
<p class="MsoNormal">You can reference the ASSIGNED-FLOW (or other keywords) of a control zone accordingly:<o:p></o:p></p>
<p class="MsoNormal">#LR(“CONTROL-ZONE”,”ASSIGNED-FLOW”)<o:p></o:p></p>
<p class="MsoNormal">If you knew, for example, that all your systems have 300 watts of fan power, you could enter this expression for SYSTEM:SUPPLY-KW/FLOW:<o:p></o:p></p>
<p class="MsoNormal">0.300/#LR(“CONTROL-ZONE”,”ASSIGNED-FLOW”)<o:p></o:p></p>
<p class="MsoNormal">This won’t be as helpful in cases where you have more than one zone assigned to a single-zone system. And you’ll probably want to make the expression more elaborate using an IF-THEN to account for cases where there is no assigned flow in
the control zone.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">~Bill<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium",sans-serif;color:black">William Bishop, PE, BEMP, BEAP, CEM, LEED AP<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">Senior Energy Engineer<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:3.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></b></p>
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(585) 698-1956</span><span style="color:#002060"> </span></i></b><span style="color:#1F497D"> </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D">F: (585) 325-6005<o:p></o:p></span></p>
<p class="MsoNormal"><a href="mailto:wbishop@pathfinder-ea.com"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:blue">bbishop@pathfinder-ea.com</span></a><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"> </span><a href="http://www.pathfinder-ea.com/"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:blue">www.pathfinder-ea.com</span></a><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D">134 South Fitzhugh Street<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D">Rochester, NY 14608 <img border="0" width="26" height="23" style="width:.2708in;height:.2395in" id="Picture_x0020_1" src="cid:image006.png@01D4FB5C.F3673FA0">
</span><i><span style="font-size:7.0pt;font-family:"Verdana",sans-serif;color:#00B0F0">Ask me why Carbon Fee & Dividend may be right for you.</span></i><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"><b>From:</b> Equest-users <<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>>
<b>On Behalf Of </b>Jones, Christopher via Equest-users<br>
<b>Sent:</b> Thursday, April 25, 2019 11:45 AM<br>
<b>To:</b> Krystyniak, Patrick <<a href="mailto:patrick.krystyniak@stantec.com">patrick.krystyniak@stantec.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] User Expression referencing Zone at system level<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am not so sure you can reference children in the Keyword expressions. The DOE2.2 manual does not mention child referencing. I know you can reference child components using the Compliance Analysis modules – see the ComplianceAnalysis manual
but not all those commands are available in the .inp Keyword expressions. For a single zone system, the SUPPLY-FLOW is the zone ASSIGNED-FLOW times the SIZING-RATIO. ASSIGNED-FLOW (times system SIZING-RATIO) in the zone takes precedence over supply flow keywords
in the system. You might do testing querying the SYSTEM SUPPLY-FLOW with ASSIGNED-FLOW set in the zone and no system supply flow specified at the SYSTEM level.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Christopher R Jones, P.Eng.<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif">T+ 1 416-644-0252<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><img border="0" width="60" height="29" style="width:.625in;height:.302in" id="_x0031_cc2331b-d8c3-424e-81de-2b17716d444e.png_x003f_ver_x003d_1495657656000" src="cid:image007.png@01D4FB5C.F3673FA0" alt="cid:image001.png@01D4FB5C.47A892E0"><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 [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Krystyniak, Patrick via Equest-users<br>
<b>Sent:</b> Thursday, April 25, 2019 10:50 AM<br>
<b>To:</b> <a href="mailto:equest-users@onebuilding.org">equest-users@onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] User Expression referencing Zone at system level<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">I am looking to utilize a user expressions that will calculate the kW/CFM for a given system. Each system is a single zone system.
<br>
<br>
Is it possible to reference the zone “Assigned-Flow” in a user expression at the system level?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">I am unsure if you are able to reference a child component.. I receive an error trying something along the lines of #CR(“ZONE”,”ASSIGNED-FLOW”).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Thanks<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:2.0pt;font-family:"Arial",sans-serif;color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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