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<p class="MsoNormal">I’ve been too clueless to notice that I haven’t gotten eQUEST-users messages since May. I blocked Rodrigo’s vacation messages which we all got 500 of and everything else was blocked too…<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">So here’s a random <b>Tip-of-the-Day</b>!<o:p></o:p></p>
<p class="MsoNormal">Create custom User-Defined Default Expressions that set system and/or zone defaults based on the
<u>occurrence number</u> of the system.<o:p></o:p></p>
<p class="MsoNormal">Example:<o:p></o:p></p>
<p class="MsoNormal">Your project uses 12 systems – five PVAV systems, five PSZ systems, one HVSYS and one UVT, and the order you created them is PVAV-1, PVAV-2,…,PVAV-5, PSZ-1,…,PSZ-5, HVSYS, UVT<o:p></o:p></p>
<p class="MsoNormal">The corresponding occurrence numbers for these systems is 1,2,3,4,5,6,7,8,9,10,11,12.<o:p></o:p></p>
<p class="MsoNormal">Using the BDL function SymValue combined with LocalSym or ParentSym, you can create expressions such as this one, which assigns different zone cooling thermostat schedules based on the system the zone is assigned to:<o:p></o:p></p>
<p class="MsoNormal"> COOL-TEMP-SCH = <o:p></o:p></p>
<p class="MsoNormal">{if (#SV(#PS())==1 .OR. #SV(#PS())==7) then<o:p></o:p></p>
<p class="MsoNormal"> #SI("72F Cool Sch", "ZONE", "COOL-TEMP-SCH")<o:p></o:p></p>
<p class="MsoNormal"> else if (#SV(#PS())>10) then unused<o:p></o:p></p>
<p class="MsoNormal"> else #SI("74F Cool Sch", "ZONE", "COOL-TEMP-SCH")<o:p></o:p></p>
<p class="MsoNormal"> endif<o:p></o:p></p>
<p class="MsoNormal">endif}<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">You could make the same assignments with a SWITCH statement:<o:p></o:p></p>
<p class="MsoNormal"> COOL-TEMP-SCH = <o:p></o:p></p>
<p class="MsoNormal">{switch #SV(#PS())<o:p></o:p></p>
<p class="MsoNormal"> case 1 : #SI("72F Cool Sch", "ZONE", "COOL-TEMP-SCH")<o:p></o:p></p>
<p class="MsoNormal"> case 7 : #SI("72F Cool Sch", "ZONE", "COOL-TEMP-SCH")<o:p></o:p></p>
<p class="MsoNormal"> case 11 : unused<o:p></o:p></p>
<p class="MsoNormal"> case 12 : unused<o:p></o:p></p>
<p class="MsoNormal"> default : #SI("74F Cool Sch", "ZONE", "COOL-TEMP-SCH")<o:p></o:p></p>
<p class="MsoNormal">endswitch}<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">You would use the BDL function LocalSym to assign SYSTEM keywords by system occurrence number. Since each system TYPE has its own keyword defaults, you would need to customize the expression for each system type, or copy the same expression
into each of the system types you want to apply it to.<o:p></o:p></p>
<p class="MsoNormal"> COOLING-EIR = <o:p></o:p></p>
<p class="MsoNormal">{switch #SV(#LS())<o:p></o:p></p>
<p class="MsoNormal"> case 1 : 0.2945 $ PVAV-1<o:p></o:p></p>
<p class="MsoNormal"> case 2 : 0.3051 $ PVAV-2<o:p></o:p></p>
<p class="MsoNormal"> case 3 : 0.2945 $ PVAV-3<o:p></o:p></p>
<p class="MsoNormal"> case 4 : 0.2945 $ PVAV-4<o:p></o:p></p>
<p class="MsoNormal"> case 5 : 0.3051 $ PVAV-5<o:p></o:p></p>
<p class="MsoNormal"> case 7 : 0.3283 $ PSZ-2<o:p></o:p></p>
<p class="MsoNormal"> default : 0.2267 $ All other systems for which this expression is used<o:p></o:p></p>
<p class="MsoNormal">endswitch}<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">~Bill<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<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
</span></b><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium",sans-serif;color:#006600">|</span></b><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium",sans-serif;color:black"> Pathfinder Engineers & Architects LLP<o:p></o:p></span></b></p>
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<p class="MsoNormal" style="line-height:105%"><b><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:black">Senior Energy Engineer<o:p></o:p></span></b></p>
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<p class="MsoNormal" style="line-height:105%"><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:#1F497D">134 South Fitzhugh Street</span><span style="font-size:9.0pt;line-height:105%;color:#1F497D">
</span><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:#1F497D">Rochester, NY 14608<o:p></o:p></span></p>
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<p class="MsoNormal" style="line-height:105%"><b><i><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:#002060">T: (585) 698-1956</span></i></b><b><i><span style="color:#002060">
</span></i></b><span style="color:#1F497D"> </span><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:#1F497D">F: (585) 325-6005</span><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="line-height:105%"><a href="mailto:wbishop@pathfinder-ea.com"><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:blue">bbishop@pathfinder-ea.com</span></a><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:black">
</span><a href="http://www.pathfinder-ea.com/"><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:blue">www.pathfinder-ea.com</span></a><span style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-top:3.0pt;line-height:105%"><img border="0" width="34" height="32" id="Picture_x0020_5" src="cid:image006.png@01D316A5.584E7CB0" alt="http://png-5.findicons.com/files/icons/977/rrze/720/globe.png"><span style="font-size:7.5pt;line-height:105%;color:#00B0F0">Carbon
Fee and Dividend - simple, effective, and market-based.</span><span style="color:#1F497D"><o:p></o:p></span></p>
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