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<div dir="ltr" data-setdir="false">Perfetto. Si lo farò.</div><div dir="ltr" data-setdir="false">Intendevo dire per l'operatore and se l'equazione va scritta cosi: Free_cooling= and(GE(T_amb,18),LE(T_amb,24))</div><div dir="ltr" data-setdir="false"><br></div><div><br></div>
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Il mercoledì 6 gennaio 2021, 12:48:15 CET, Toni Calabrese via TRNSYS-users <trnsys-users@lists.onebuilding.org> ha scritto:
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<p class="yiv0252219260MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="IT">L operatore AND va definito solo nella equazione del controllo Free_Cooling. L'operatore OR non ti serve in questo caso.</span></p>
<p class="yiv0252219260MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="IT"> </span></p>
<p class="yiv0252219260MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="IT">Ti consiglio comunque prima di provare l'equazione e vedere con un plot se come output hai quello che ti aspetti di avere.
Poi lo implementi nell edificio</span></p>
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<p class="yiv0252219260MsoNormal" style="margin-top:4.0pt;"><b><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">Toni Calabrese</span></b><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">, MSc.</span><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;"></span></p>
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<p class="yiv0252219260MsoNormal"><b><span style="font-size:11.0pt;font-family:sans-serif;" lang="EN-US">From:</span></b><span style="font-size:11.0pt;font-family:sans-serif;" lang="EN-US"> TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org>
<b>On Behalf Of </b>Filippo Angeli via TRNSYS-users<br clear="none">
<b>Sent:</b> Wednesday, January 6, 2021 12:43 PM<br clear="none">
<b>To:</b> Toni Calabrese via TRNSYS-users <trnsys-users@lists.onebuilding.org><br clear="none">
<b>Cc:</b> Filippo Angeli <filippoangeli24@yahoo.it><br clear="none">
<b>Subject:</b> Re: [TRNSYS-users] night free cooling</span></p>
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<p class="yiv0252219260MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;">Perfetto.</span></p>
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<p class="yiv0252219260MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;">L'operatore AND va inserito in mezzo e non all'inizio? perchè l'OR lo metto all inizio</span></p>
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<p class="yiv0252219260MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Il mercoledì 6 gennaio 2021, 12:40:16 CET, Toni Calabrese via TRNSYS-users <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:trnsys-users@lists.onebuilding.org" target="_blank" href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>>
ha scritto: </span></p>
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<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="IT">Ah ok, adesso ho capito meglio. Dovresti allora scrivere una coppia di equazioni:</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="IT"> </span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="IT">Free_Cooling = GT(Tamb,18) AND LT(Tamb,24) -> con questa equazione attiverai il Free Cooling solo quanto la T esterna sarä compresa tra 18
e 24°C</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="IT"> </span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="IT">Portata = C_season * (Free_Cooling* Profilo_aria + (1- Free_Cooling)*0.6) -> con questa equazione attivi la portata di Free cooling
solo in estate e solo quando il controllo sarä uguale a 1. Se Free_Cooling = 0 avrai allora la portata di 0.6.</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="IT">Tutto chiaro?</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal" style="margin-top:4.0pt;"><b><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">Toni Calabrese</span></b><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">, MSc.</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">Wissenschaftlicher Projektmitarbeiter</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;"><a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:toni.calabrese@spf.ch" target="_blank" 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:sans-serif;color:#8C195F;">
</span><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;"><a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:toni.calabrese@ost.ch" target="_blank" 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:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#8C195F;"> </span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">T +41 58 257 4827</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;"> </span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">SPF Institut für Solartechnik</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">OST – Ostschweizer Fachhochschule</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">Oberseestr. 10 | CH-8640 Rapperswil | Switzerland |
</span><u><span style="font-size:11.0pt;font-family:sans-serif;color:#8C195F;"><a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://www.spf.ch"><span style="font-size:10.0pt;color:#8C195F;">www.spf.ch</span></a></span></u><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">
| </span><u><span style="font-size:11.0pt;font-family:sans-serif;color:#8C195F;"><a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://www.ost.ch"><span style="font-size:10.0pt;color:#8C195F;">www.ost.ch</span></a></span></u><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;"> </span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
<p class="yiv0252219260msonormal"><span style="font-size:9.0pt;font-family: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:sans-serif;color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal"><b><span style="font-size:11.0pt;font-family:sans-serif;color:#26282A;" lang="EN-US">From:</span></b><span style="font-size:11.0pt;font-family:sans-serif;color:#26282A;" lang="EN-US"> TRNSYS-users <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:trnsys-users-bounces@lists.onebuilding.org" target="_blank" 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 clear="none">
<b>Sent:</b> Wednesday, January 6, 2021 12:33 PM<br clear="none">
<b>To:</b> Toni Calabrese via TRNSYS-users <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:trnsys-users@lists.onebuilding.org" target="_blank" href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>><br clear="none">
<b>Cc:</b> Filippo Angeli <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:filippoangeli24@yahoo.it" target="_blank" href="mailto:filippoangeli24@yahoo.it">filippoangeli24@yahoo.it</a>><br clear="none">
<b>Subject:</b> Re: [TRNSYS-users] night free cooling</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">In pratica io voglio avere il free cooling notturno d'estate solo sotto determinate condizioni. A quel punto una volta determinate devo far si che
la portata di ricambio d'aria dipenda da questo free cooling.</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Quando invece il free cooling non lo posso usare perchè non rispetto queste condizioni di temperatura, voglio una portata di ventilazione di 0.6 m3/hrm2.</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"> </span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Non so se mi sono spiegato bene.
</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Grazie e cordiali saluti.</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Angeli Filippo</span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Il mercoledì 6 gennaio 2021, 12:26:59 CET, Toni Calabrese via TRNSYS-users <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:trnsys-users@lists.onebuilding.org" target="_blank" href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>>
ha scritto: </span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"> </span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="IT">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.</span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="EN-US">In sostanza: Free_Cooling = GT(Tamb,18) AND LT(Tamb,24).</span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="IT">E' quello che vuoi fare?</span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="IT"> </span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="IT"> </span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5" style="margin-top:4.0pt;"><b><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">Toni Calabrese</span></b><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">, MSc.</span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">Wissenschaftlicher Projektmitarbeiter</span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;"><a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:toni.calabrese@spf.ch" target="_blank" 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:sans-serif;color:#8C195F;">
</span><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;"><a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:toni.calabrese@ost.ch" target="_blank" href="mailto:toni.calabrese@ost.ch"><span style="color:#0065A3;">toni.calabrese@ost.ch</span></a></span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:11.0pt;font-family:sans-serif;color:#8C195F;"> </span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">T +41 58 257 4827</span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;"> </span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">SPF Institut für Solartechnik</span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">OST – Ostschweizer Fachhochschule</span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">Oberseestr. 10 | CH-8640 Rapperswil | Switzerland |
</span><u><span style="font-size:11.0pt;font-family:sans-serif;color:#8C195F;"><a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://www.spf.ch"><span style="font-size:10.0pt;color:#8C195F;">www.spf.ch</span></a></span></u><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">
| </span><u><span style="font-size:11.0pt;font-family:sans-serif;color:#8C195F;"><a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://www.ost.ch"><span style="font-size:10.0pt;color:#8C195F;">www.ost.ch</span></a></span></u><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;"> </span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal5"><span style="font-size:9.0pt;font-family:sans-serif;color:#1F497D;">OST – Ostschweizer Fachhochschule ist der Zusammenschluss aus FHS St.Gallen, HSR Rapperswil und NTB Buchs.</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><b><span style="font-size:11.0pt;font-family:sans-serif;color:#26282A;" lang="EN-US">From:</span></b><span style="font-size:11.0pt;font-family:sans-serif;color:#26282A;" lang="EN-US"> TRNSYS-users <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:trnsys-users-bounces@lists.onebuilding.org" target="_blank" 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 clear="none">
<b>Sent:</b> Wednesday, January 6, 2021 12:04 PM<br clear="none">
<b>To:</b> Toni Calabrese via TRNSYS-users <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:trnsys-users@lists.onebuilding.org" target="_blank" href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>><br clear="none">
<b>Cc:</b> Filippo Angeli <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:filippoangeli24@yahoo.it" target="_blank" href="mailto:filippoangeli24@yahoo.it">filippoangeli24@yahoo.it</a>><br clear="none">
<b>Subject:</b> Re: [TRNSYS-users] night free cooling</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"> </span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Ciao,</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">si sono Italiano.</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Io ho pensato di fare in questo modo con un equazione.</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">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.</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">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 .</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Può andare?</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">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).</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Grazie e cordiali saluti.</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"> </span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Angeli FIlippo</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"> </span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Il mercoledì 6 gennaio 2021, 09:07:46 CET, Toni Calabrese via TRNSYS-users <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:trnsys-users@lists.onebuilding.org" target="_blank" href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>>
ha scritto: </span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"> </span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal5"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"> </span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal31"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="EN-US">Hallo Filippo,</span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal31"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="EN-US">I suppose that you are Italian. In case let me know and I will write you in Italian.</span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal31"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="EN-US"> </span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal31"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="EN-US">If you want to model the night cooling, you can follow two approaches:</span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msolistparagraph21"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="EN-US">1.</span><span style="font-size:7.0pt;font-family:serif;color:#1F497D;" lang="EN-US">
</span><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="EN-US">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="color:#26282A;"></span></p>
<p class="yiv0252219260msolistparagraph21"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="EN-US">2.</span><span style="font-size:7.0pt;font-family:serif;color:#1F497D;" lang="EN-US">
</span><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="EN-US">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="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal31"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="EN-US"> </span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal31"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="EN-US">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="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal31"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="EN-US"> </span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal31"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;" lang="EN-US">I hope I helped you</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal31" style="margin-top:4.0pt;"><b><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">Toni Calabrese</span></b><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">, MSc.</span><span style="color:#26282A;"></span></p>
<p class="yiv0252219260msonormal31"><span style="font-size:10.0pt;font-family:sans-serif;color:#1F497D;">Wissenschaftlicher Projektmitarbeiter</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal31"><b><span style="font-size:11.0pt;font-family:sans-serif;color:#26282A;" lang="EN-US">From:</span></b><span style="font-size:11.0pt;font-family:sans-serif;color:#26282A;" lang="EN-US"> TRNSYS-users <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:trnsys-users-bounces@lists.onebuilding.org" target="_blank" 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 clear="none">
<b>Sent:</b> Tuesday, January 5, 2021 8:25 PM<br clear="none">
<b>To:</b> <a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:trnsys-users@lists.onebuilding.org" target="_blank" href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a><br clear="none">
<b>Cc:</b> Filippo Angeli <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:filippoangeli24@yahoo.it" target="_blank" href="mailto:filippoangeli24@yahoo.it">filippoangeli24@yahoo.it</a>><br clear="none">
<b>Subject:</b> [TRNSYS-users] night free cooling</span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal31"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"> </span><span style="color:#26282A;"></span></p>
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<p class="yiv0252219260msonormal31"><span class="yiv0252219260ydp877753f0jlqj4b"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;" lang="EN">Good evening, I want to include night free cooling in my building during the summer season.</span></span><span class="yiv0252219260ydp877753f0viiyi"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;" lang="EN">
</span></span><span class="yiv0252219260ydp877753f0jlqj4b"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;" lang="EN">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="yiv0252219260ydp877753f0viiyi"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;" lang="EN">
</span></span><span class="yiv0252219260ydp877753f0jlqj4b"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;" lang="EN">Thanks a lot.</span></span><span style="color:#26282A;"></span></p>
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