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Pauline,<br>
In addition to Adrien's response, the sky temperature model that
is implemented in Type15 (when reading meteonorm files for example)
is the same one that is in the TESS Type575.<br>
Best,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 8/22/2012 08:22, ITF - Adrien
JEZEQUEL wrote:<br>
</div>
<blockquote cite="mid:5034DD04.2020004@itf.biz" type="cite">
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<div class="moz-cite-prefix"><font size="-1"><font face="Arial">Hi
Pauline,<br>
<br>
This subject was ever treated in the past :<br>
<a moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://mailman.cae.wisc.edu/pipermail/trnsys-users/2009/004373.html">https://mailman.cae.wisc.edu/pipermail/trnsys-users/2009/004373.html</a><br>
<br>
Different models exist to evaluate sky temperature. </font></font><font
size="-1"><font face="Arial"> That's why you may find
differents values.</font></font><br>
<font size="-1"><font face="Arial">Meteonorm software use
SoDa/ESRA clear sky model.<br>
<br>
In trnsys, you may use :<br>
</font></font>
<ul>
<li>type69a : cloudiness factor is not controled by user<br>
</li>
<li>type69b : cloudiness factor is an input of the type<br>
</li>
<li>type575a and type575b (In TESS library only)</li>
</ul>
<p>If you compare sky temperature given by meteonorm data and
sky temperatures given with type69b with the same cloudiness
factor as meteonorm data, results won't be so different.<br>
</p>
<p>Best regards<br>
</p>
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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 22/08/2012 11:17, Pauline GELIN a écrit :<br>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hello,
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US">For a project I would like to check if the
effective sky temperature done by the weather type 9
(Meteonorm) is the same than the temperature calculated in
the type 69 (with 4 inputs from the type 9). <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US">In fact there are different. <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US">How can we explain that whereas there is the
same descriptions?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US">Thank you very much for your answers. <o:p></o:p></span></p>
<p class="MsoNormal"><span
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<p class="MsoNormal"><span
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<p class="MsoNormal"><span
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lang="EN-US">Pauline Gelin<o:p></o:p></span></p>
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***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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