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<font size="-1"><font face="Arial">Dear Cristi,<br>
<br>
You may build a schedule with equation tool or use special type
in TRNSYS to define your seasons.<br>
With equation tool you will have something like :<br>
</font></font>
<ul>
<li><font size="-1"><font face="Arial">WINTER =
LT(TIME,1920)+GT(TIME,8520)</font></font></li>
<li><font size="-1"><font face="Arial">SUMMER =
GT(TIME,4848)*LT(TIME,7056)</font></font></li>
</ul>
<font size="-1"><font face="Arial">Then, control your exchange with
an equation like <br>
</font></font>
<ul>
<li><font size="-1"><font face="Arial">EXCHANGE = WINTER + SUMMER</font></font></li>
</ul>
<font size="-1"><font face="Arial">Your exchange works in winter and
summer (=1), and by pass (=0) the rest of the time<br>
<br>
Best regards<br>
</font></font><font size="-1"><font face="Arial"></font></font>
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<td colspan="2"><font color="#000000" face="CALIBRI"
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Simulations Thermiques Dynamiques</font></td>
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Le 23/11/2011 15:43, C. Ionescu a écrit :
<blockquote cite="mid:4ECD067D.000006.02140@CRISTI-PC" type="cite">
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<p style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span
style="mso-ansi-language: EN-GB" lang="EN-GB"><font
color="#000000"><font face="Times New Roman">Hello
everybody!<!--?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /--><o:p></o:p></font></font></span></p>
<p style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span
style="mso-ansi-language: EN-GB" lang="EN-GB"><o:p><font
color="#000000" face="Times New Roman"> </font></o:p></span></p>
<p style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span
style="mso-ansi-language: EN-GB" lang="EN-GB"><font
color="#000000"><font face="Times New Roman">I’m
relatively new in TRNSYS and I want to
simulate a ground-to-air heat exchanger. My
question is: how can I simulate the by-pass
for this type of exchanger? My exchanger is
used to heat/cool the ventilation air during
winter/summer, but in the inter-season is no
need to use it. So, it must be by-passed.
Thank you for your attention!<o:p></o:p></font></font></span></p>
<p style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span
style="mso-ansi-language: EN-GB" lang="EN-GB"><o:p><font
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<p style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span
style="mso-ansi-language: EN-GB" lang="EN-GB"><font
color="#000000"><font face="Times New Roman">C.Ionescu<o:p></o:p></font></font></span></p>
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<pre wrap="">_______________________________________________
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