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<p class="MsoNormal">Hi Paul,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If you want to drill down into better understanding the temperature behavior for a given zone, try the following framework:<o:p></o:p></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Set up a custom hourly report & block for a zone of concern, and track at minimum the “Current hour zone temp (deg F)” and “Current hour zone thermostat setting (deg F). There are
many other helpful options for zones, spaces, systems, and weather data as well to consider for troubleshooting, but we’re going to first just focus on observing the temperatures to see where that leads us next:<o:p></o:p></li></ol>
<p class="MsoListParagraph"><img width="818" height="501" style="width:8.5208in;height:5.2187in" id="Picture_x0020_2" src="cid:image003.png@01D4E9FE.EB3C4E70"><o:p></o:p></p>
<ol style="margin-top:0in" start="2" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Then simulate, File
<span style="font-family:Wingdings">à</span> Export <span style="font-family:Wingdings">
à</span> Hourly Results (CSV)<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Presuming you’re now in Excel, Highlight the column off to the right of the spreadsheet, and generate a line chart (F11 will automate a few steps) – you’ll end up with 8,760 temperature
reads in sequence:<o:p></o:p></li></ol>
<p class="MsoNormal" style="margin-left:1.0in"><img width="907" height="664" style="width:9.4479in;height:6.9166in" id="_x0000_i1029" src="cid:image004.png@01D4EA00.03D61B90"><o:p></o:p></p>
<ol style="margin-top:0in" start="4" type="1">
<li class="MsoListParagraph" style="color:black;margin-left:0in;mso-list:l0 level1 lfo1">
This is a compressed view with dense data, but at this juncture you may pick up an immediate sense of the frequency, magnitude, and seasonal timing of your unmet hours, based on your *<b>understanding</b>* of the thermostat inputs (be mindful human input error
is an ever-present possibility for your diagnosis). If nothing seems obvious, you may want to further overlay the hourly thermostat setpoints we exported next (this involved right clicking the chart to add a new series, making it a scatterplot, and adjusting
the y-axis bounds:<o:p></o:p></li></ol>
<p class="MsoListParagraph"><img width="923" height="650" style="width:9.6145in;height:6.7708in" id="Picture_x0020_4" src="cid:image005.png@01D4EA01.9FECF340"><span style="color:black"><o:p></o:p></span></p>
<p class="MsoListParagraph">Recall than<span style="color:black"> “</span><span style="color:black">An unmet hour is reported
<b>when a zone’s hourly temperature diverges from the thermostat setpoint/setback temperature by at least the
<u>throttling range</u> + 1°F</b>.”<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Then based on your observations, you can return to your custom hourly reports to pick up any number of other useful data columns. Commonly useful things to consider include hourly:<o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo2">system operations (fan state, active heating/cooling/economizer, airflow, etc).<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo2">airflow to the zone<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo2">space loads<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo2">weather drybulb<o:p></o:p></li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It’s kind of like you’re a doctor diagnosing a patient. At some juncture you’ll hopefully arrive at an “ah-ha” moment and be able to conjecture what specific behavior is the source of your troubles, then go take action in your model to
resolve the problem. The same framework/skillset can be leveraged to visualize and verify the intended results after applying one or more fixes to your model.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hope this helps!<o:p></o:p></p>
<p class="MsoNormal">~Nick<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<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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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#3A7A46"><img width="726" height="9" style="width:7.5625in;height:.0937in" id="Picture_x0020_3" src="cid:image001.png@01D4E9FE.84109030"><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:9.0pt;font-family:"Arial",sans-serif;color:#626469">913 . 564 . 6361<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469">785 . 410 . 3317<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469">913 . 564 . 6380<o:p></o:p></span></p>
<p class="MsoNormal"><u><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469"><a href="mailto:nicholas.caton@se.com"><span style="font-family:"Calibri",sans-serif;color:#626469">nicholas.caton@se.com</span></a></span></u><span style="font-size:9.0pt;color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Equest-users <equest-users-bounces@lists.onebuilding.org>
<b>On Behalf Of </b>Integral Mechanical Engineering Designs via Equest-users<br>
<b>Sent:</b> Tuesday, April 02, 2019 5:37 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Hourly space temperatura after cooling<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p><span lang="ES-EC" style="color:red">[External email: Use caution with links and attachments]</span><span lang="ES-EC"><o:p></o:p></span></p>
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<p><span lang="ES-EC"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-CA">Hi all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">If I open the BEPS Building Energy Performance, there are 155 unmet hours. I would like to get the temperatura values throughout the year after cooling, but the only related option that I can see is the SS-O Space Temperature
Summary where the temperatures above the set point are much more than the unmet hours. It seems that is the report of the space before cooling.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">How could I get the space temperature after cooling to have relation with the unmet hours?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Kind Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Paul Caicedo<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">IntegralMECH<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="ES-EC"><br>
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