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<p class="MsoNormal"><span lang="IT" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Scusami ma forse non ho capito bene cosa vuoi modellare. Sostanzialmente tu vorresti ventilare il tuo edificio in estate quando
fuori fa fresco (a esempio di sera e di notte in estate). A questo punto io penso che puoi semplicemente scrivere una equazione sul controllo che attivi il Free Cooling solo se la temperatura esterna è compresa tra 18 e 24 °C. Dovrebbe essere possibile farlo
con una equazione che contenga il "AND" o qualcosa del genere.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:EN-US">In sostanza: Free_Cooling = GT(Tamb,18) AND LT(Tamb,24).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="IT" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:EN-US">E' quello che vuoi fare?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="IT" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-top:4.0pt"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">Toni Calabrese</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">, MSc.</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">Wissenschaftlicher Projektmitarbeiter<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D"><a href="mailto:toni.calabrese@spf.ch"><span style="color:#0065A3">toni.calabrese@spf.ch</span></a> |</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#8C195F">
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D"><a href="mailto:toni.calabrese@ost.ch"><span style="color:#0065A3">toni.calabrese@ost.ch</span></a></span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#8C195F"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#8C195F"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">T +41 58 257 4827<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">SPF Institut für Solartechnik<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">OST – Ostschweizer Fachhochschule<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:#1F497D;mso-fareast-language:EN-US">OST – Ostschweizer Fachhochschule ist der Zusammenschluss aus FHS St.Gallen, HSR Rapperswil und NTB Buchs.<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org>
<b>On Behalf Of </b>Filippo Angeli via TRNSYS-users<br>
<b>Sent:</b> Wednesday, January 6, 2021 12:04 PM<br>
<b>To:</b> Toni Calabrese via TRNSYS-users <trnsys-users@lists.onebuilding.org><br>
<b>Cc:</b> Filippo Angeli <filippoangeli24@yahoo.it><br>
<b>Subject:</b> Re: [TRNSYS-users] night free cooling<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"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Ciao,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">si sono Italiano.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Io ho pensato di fare in questo modo con un equazione.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Creo un comando di accensione del free cooling: Free_cooling = GE*(T_amb,18) in questo modo stabilisco un segnale di accensione del free cooling per temperature esterne maggiori
di 18°C.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Poi regolo la portata d'aria in questo modo: portata= (profilo_aria*Free_cooling*GE(T_amb,24) + 0.6*LE(T_amb,24))* C_season. In questo modo faccio si che quando il free cooling
può essere utile, se la temperatura esterna è maggiore di 24 gradi allora parte mentre se è minore no. Con 24 indico la temperatura interna all'edifico di confort abbassata di 2°C .<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Può andare?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Perchè mi serve un vincolo sulla minima temperatura esterna al di sotto della quale non voglio free colling ed un vincolo che mi dica quando serve davvero attivarlo ( quindi
temperatura esterna maggiore di 24 gradi).<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Grazie e cordiali saluti.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Angeli FIlippo<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Il mercoledì 6 gennaio 2021, 09:07:46 CET, Toni Calabrese via TRNSYS-users <<a href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>>
ha scritto: <o:p></o:p></span></p>
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<p class="yiv2243891434msonormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">Hallo Filippo,</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msonormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">I suppose that you are Italian. In case let me know and I will write you in Italian.</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msonormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D"> </span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msonormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">If you want to model the night cooling, you can follow two approaches:</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msolistparagraph"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">1.</span><span lang="EN-US" style="font-size:7.0pt;font-family:"New",serif;color:#1F497D">
</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">You could use Type 2 (controller) in order to get 1 in case the external temperature is lower than a certain value</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msolistparagraph"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">2.</span><span lang="EN-US" style="font-size:7.0pt;font-family:"New",serif;color:#1F497D">
</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">You could use an equation. Please have a look in the EQUATION Statement and you can learn how to set an equation with the function "GT" or "LT".</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msonormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D"> </span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msonormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">You can follow the first or the second approach depending on your experience with TRNSYS. Maybe it would be easier for you to start with
the second approach.</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msonormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D"> </span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msonormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">I hope I helped you</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msonormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D"> </span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="yiv2243891434msonormal" style="margin-top:4.0pt"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">Toni Calabrese</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">, MSc.</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">Wissenschaftlicher Projektmitarbeiter</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D"><a href="mailto:toni.calabrese@spf.ch" target="_blank"><span style="color:#0065A3">toni.calabrese@spf.ch</span></a> |</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#8C195F">
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D"><a href="mailto:toni.calabrese@ost.ch" target="_blank"><span style="color:#0065A3">toni.calabrese@ost.ch</span></a></span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="yiv2243891434msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">T +41 58 257 4827</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="yiv2243891434msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">SPF Institut für Solartechnik</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">OST – Ostschweizer Fachhochschule</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv2243891434msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">Oberseestr. 10 | CH-8640 Rapperswil | Switzerland |
</span><u><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#8C195F"><a href="http://www.spf.ch" target="_blank"><span style="font-size:10.0pt;color:#8C195F">www.spf.ch</span></a></span></u><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">
| </span><u><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#8C195F"><a href="http://www.ost.ch" target="_blank"><span style="font-size:10.0pt;color:#8C195F">www.ost.ch</span></a></span></u><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="yiv2243891434msonormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D">OST – Ostschweizer Fachhochschule ist der Zusammenschluss aus FHS St.Gallen, HSR Rapperswil und NTB Buchs.</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="yiv2243891434msonormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#26282A">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#26282A"> TRNSYS-users <<a href="mailto:trnsys-users-bounces@lists.onebuilding.org">trnsys-users-bounces@lists.onebuilding.org</a>>
<b>On Behalf Of </b>Filippo Angeli via TRNSYS-users<br>
<b>Sent:</b> Tuesday, January 5, 2021 8:25 PM<br>
<b>To:</b> <a href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a><br>
<b>Cc:</b> Filippo Angeli <<a href="mailto:filippoangeli24@yahoo.it">filippoangeli24@yahoo.it</a>><br>
<b>Subject:</b> [TRNSYS-users] night free cooling</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="yiv2243891434msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
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<p class="yiv2243891434msonormal"><span class="yiv2243891434ydp877753f0jlqj4b"><span lang="EN" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#26282A">Good evening, I want to include night free cooling in my building during the summer season.</span></span><span class="yiv2243891434ydp877753f0viiyi"><span lang="EN" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#26282A">
</span></span><span class="yiv2243891434ydp877753f0jlqj4b"><span lang="EN" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#26282A">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? Furthermore, I want night free cooling to occur only in certain external temperature conditions (for example greater than 24 ° C).</span></span><span class="yiv2243891434ydp877753f0viiyi"><span lang="EN" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#26282A">
</span></span><span class="yiv2243891434ydp877753f0jlqj4b"><span lang="EN" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#26282A">Thanks a lot.</span></span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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