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Hi Filippo,</div>
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you can implement this using controllers or equations <span style="background-color:rgb(255, 255, 255);display:inline !important">(signal1 = gt(t_amb,15)*...)</span> in your TRNSYS deckfile based on the external temperatures from the weather data reader. For
example you can use Type 165, a simple differential controller with hysterese for temperatures (for more info on this component, see the <span style="background-color:rgb(255, 255, 255);display:inline !important">Mathematical Reference Part in the </span>Documentation,
Chapter 4.1.14). </div>
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You can then use the output signal from this equation/component in an input-based definition of the air change rate for your ventilation. </div>
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Best regards, </div>
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Christina </div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>Von:</b> TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org> im Auftrag von Filippo Angeli via TRNSYS-users <trnsys-users@lists.onebuilding.org><br>
<b>Gesendet:</b> Dienstag, 5. Januar 2021 20:23<br>
<b>An:</b> TRNSYS USERS (trnsys-users@lists.onebuilding.org) <trnsys-users@lists.onebuilding.org><br>
<b>Cc:</b> Filippo Angeli <filippoangeli24@yahoo.it><br>
<b>Betreff:</b> [TRNSYS-users] night Free cooling</font>
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<div><span class="x_ydp32fc203fVIiyi" lang="en"><span class="x_ydp32fc203fJLqJ4b x_ydp32fc203fChMk0b"><span>Good evening,</span></span><span class="x_ydp32fc203fJLqJ4b"><span>
</span></span><span class="x_ydp32fc203fJLqJ4b x_ydp32fc203fChMk0b"><span>I want to include night free cooling in my building during the summer season.</span></span>
<span class="x_ydp32fc203fJLqJ4b x_ydp32fc203fChMk0b"><span>How can I build a function that regulates the night ventilation air flow rate, so that free cooling occurs when I have an external temperature greater than 15 ° C?</span></span><span class="x_ydp32fc203fJLqJ4b"><span>
</span></span><span class="x_ydp32fc203fJLqJ4b x_ydp32fc203fChMk0b"><span>Furthermore, I want night free cooling to occur only in certain external temperature conditions (for example greater than 24 ° C).</span></span>
<span class="x_ydp32fc203fJLqJ4b x_ydp32fc203fChMk0b"><span>Thanks a lot.</span></span></span></div>
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<div>Il martedì 5 gennaio 2021, 12:25:54 CET, Freppel, Wirich via TRNSYS-users <trnsys-users@lists.onebuilding.org> ha scritto:
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<p class="x_yiv4162969712MsoNormal"><span lang="FR">Deal all,</span></p>
<p class="x_yiv4162969712MsoNormal"><span lang="FR"> </span></p>
<p class="x_yiv4162969712MsoNormal">First of all, I wish you all a happy new year and all the best for 2021.</p>
<p class="x_yiv4162969712MsoNormal"> </p>
<p class="x_yiv4162969712MsoNormal">Two months ago, I updated my TRNSYS version to this one : 18.02.0002. I just realized now that I can’t import a 3D model into a trnsys project., using trnsys3D plugin.</p>
<p class="x_yiv4162969712MsoNormal">I tried the two different templates that are suggested by SketchUp (I had this problem a few years back and selecting the right templates actually solved it) :</p>
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<p class="x_yiv4162969712MsoNormal">But still, when I try to create a new project with my 3D model in TRNSYS, nothing happens. I also tried a model given by TRNSYS : C:\TRNSYS18\Examples\3D_Building\1_Step_Create_Trnsys3d\ Building.idf
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<p class="x_yiv4162969712MsoNormal">Still nothing. </p>
<p class="x_yiv4162969712MsoNormal"> </p>
<p class="x_yiv4162969712MsoNormal">The version of TRNSYS 3D plugin is 1.0.5.1. I tried to look for updates but apparently the server does not answer.</p>
<p class="x_yiv4162969712MsoNormal"> </p>
<p class="x_yiv4162969712MsoNormal">Do you know if those two versions are compatible or if there is a newer version of trnsys 3D ? In this case, could you send me a download link ?</p>
<p class="x_yiv4162969712MsoNormal"> </p>
<p class="x_yiv4162969712MsoNormal">Thanks in advance</p>
<p class="x_yiv4162969712MsoNormal"> </p>
<p class="x_yiv4162969712MsoNormal">Best regards</p>
<p class="x_yiv4162969712MsoNormal"> </p>
<p class="x_yiv4162969712MsoNormal" style="line-height:115%"><b><span lang="FR" style="font-size:9.0pt; line-height:115%; font-family:sans-serif; color:#17428C">Wirich
</span></b><span lang="FR" style="font-size:9.0pt; line-height:115%; font-family:sans-serif; color:#17428C"></span></p>
<p class="x_yiv4162969712MsoNormal" style=""><span lang="EN-US" style="font-size:9.0pt; font-family:sans-serif; color:#17428C">+33 637 053 174</span></p>
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