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<p class="MsoNormal"><a name="_Hlk124516833"></a><a name="_Hlk124516947"></a><a name="_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833">I’d like to write expressions for zone keywords that are based on whether
or not the zone/space is exterior or interior – primarily whether or not the zone/space has any EXTERIOR-WALLs. In particular, I’d like to change the default for ZONE:AUX-HEAT-RATIO so that baseboards in exterior zones have a high capacity, and baseboards
in interior zones have zero capacity (no baseboard). Here are a few things I’ve thought of that don’t help:<o:p></o:p></span></span></a></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833">The ZONE can reference SPACE keywords through the #RV(#LR())
nested function, but I’m not aware of any SPACE keywords that identify exterior/interior status.<o:p></o:p></span></span></span></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833">There is a ChildCount() function (abbreviated version is
#CC()) that I think could be used to determine if a SPACE has any EXTERIOR-WALLs, but I think it is only valid for doing a Compliance Analysis.<o:p></o:p></span></span></span></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833">When starting a model using the Wizards, infiltration schedules
are automatically created with “P-Inf” and “C-Inf” in the name, based on perimeter/core. I could reference the SPACE:INF-SCHEDULE, but the schedule names that are automatically generated can vary somewhat. Also, I typically create a single infiltration schedule
to apply to all spaces in order to meet the ASHRAE 90.1 G3.1.1.4 requirement for air leakage as a function of floor area instead of exterior envelope area, for the same reason that I can’t write an expression that’s based on whether or not a space has any
EXTERIOR-WALLs.<o:p></o:p></span></span></span></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833">I could manually describe a space as exterior or interior
by adding “-ext” or “-int” to the SPACE:C-ACTIVITY-DESC. (For example, I could describe a classroom with an exterior wall as “Clas-ext”.) Then I could replace every instance of “required” in the default expression for ZONE:AUX-HEAT-RATIO with the following
expression:<o:p></o:p></span></span></span></li></ol>
<p class="MsoListParagraph"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833">switch (#LR("SPACE","C-ACTIVITY-DESC",1)) $ 1 is for 2<sup>nd</sup> set of four characters<o:p></o:p></span></span></span></p>
<p class="MsoListParagraph"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"> case "-ext": 1.0<o:p></o:p></span></span></span></p>
<p class="MsoListParagraph"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"> case "-int": 0<o:p></o:p></span></span></span></p>
<p class="MsoListParagraph"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"> default : 0.5<o:p></o:p></span></span></span></p>
<p class="MsoListParagraph"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"> endswitch<o:p></o:p></span></span></span></p>
<p class="MsoListParagraph"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833">However, that’s about as much work as manually entering the value for AUX-HEAT-RATIO. Though it could streamline
things if I had more than one custom expression that took advantage of the SWITCH statement.<o:p></o:p></span></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><o:p> </o:p></span></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833">I will write a
</span></span></span><a href="https://en.wikipedia.org/wiki/Clerihew"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833">clerihew</span></span></span><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"></span></span></span></a><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833">
poem honoring the person that provides the best solution to this challenge!<o:p></o:p></span></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><o:p> </o:p></span></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833">Thanks!<o:p></o:p></span></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833">~Bill<o:p></o:p></span></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><o:p> </o:p></span></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><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></span></span></span><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium",sans-serif;color:green">|</span></b></span></span></span><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium",sans-serif;color:#0F243E">
</span></b></span></span></span><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium",sans-serif">Pathfinder Engineers
& Architects LLP<span style="color:black"><o:p></o:p></span></span></b></span></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">Senior Energy Engineer<o:p></o:p></span></b></span></span></span></p>
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T: (585) 698-1956</span></i></b></span></span></span><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><b><i><span style="color:#002060">
</span></i></b></span></span></span><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"></span></span></span><a href="http://www.pathfinder-ea.com"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0563C1">www.pathfinder-ea.com</span></span></span></span><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"></span></span></span></a><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><b><span style="font-size:3.0pt;font-family:"Arial",sans-serif;color:black"><o:p></o:p></span></b></span></span></span></p>
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</v:shape><![endif]--><![if !vml]><span style="mso-ignore:vglayout;position:absolute;z-index:-1895823360;margin-left:422px;margin-top:3px;width:60px;height:40px"><img width="60" height="40" style="width:.625in;height:.4166in" src="cid:image004.jpg@01D934CC.62305E10" alt="IconDescription automatically generated" v:shapes="Picture_x0020_6"></span><![endif]><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"></span></span></span><!--[if gte vml 1]><v:shape id="Picture_x0020_9" o:spid="_x0000_s1026" type="#_x0000_t75" style='position:absolute;margin-left:367.2pt;margin-top:1.85pt;width:28.1pt;height:30.25pt;z-index:-251655168;visibility:visible;mso-wrap-style:square;mso-width-percent:0;mso-height-percent:0;mso-wrap-distance-left:9pt;mso-wrap-distance-top:0;mso-wrap-distance-right:9pt;mso-wrap-distance-bottom:0;mso-position-horizontal:absolute;mso-position-horizontal-relative:text;mso-position-vertical:absolute;mso-position-vertical-relative:text;mso-width-percent:0;mso-height-percent:0;mso-width-relative:margin;mso-height-relative:margin'>
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</v:shape><![endif]--><![if !vml]><span style="mso-ignore:vglayout;position:absolute;z-index:-1895822336;margin-left:490px;margin-top:3px;width:37px;height:40px"><img width="37" height="40" style="width:.3854in;height:.4166in" src="cid:image006.jpg@01D934CC.62305E10" v:shapes="Picture_x0020_9"></span><![endif]><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"></span></span></span><a href="mailto:bbishop@pathfinder-ea.com"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">bbishop@pathfinder-ea.com</span></span></span></span><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"></span></span></span></a><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D">
<o:p></o:p></span></span></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D">134 South Fitzhugh Street<o:p></o:p></span></span></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk124429695"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D">Rochester, NY 14608<o:p></o:p></span></span></span></span></p>
<span style="mso-bookmark:_Hlk124429695"></span>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><span style="font-size:6.0pt;font-family:"Arial",sans-serif;color:#0F243E"><o:p> </o:p></span></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk124516947"><span style="mso-bookmark:_Hlk124516833"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F243E">Buffalo Office: 100 Corporate Parkway, Suite 116, Amherst, NY 14226<o:p></o:p></span></span></span></p>
<span style="mso-bookmark:_Hlk124516833"></span><span style="mso-bookmark:_Hlk124516947"></span>
<p class="MsoNormal"><o:p> </o:p></p>
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