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<p class=MsoNormal>Dear Trnsys users,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-US>I’m trying to solve a heat transfer problem
through a finite thickness wall using Type 56 model (one uniform zone). I want
to calculate the energy flux from air node (fixed temperature) to inside surface
and that from outside surface to outdoor (fixed temperature) as well as inside
and outside surface temperatures. The aim is to compare Trnsys solution with
another method. I could find significant results but I have some problems with
initialization. <o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span
lang=EN-US><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>I don’t know how to give
initial temperatures for the wall different form that of the zone (Trnsys uses
the same initial temperature of walls than the zone )<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span
lang=EN-US><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>If I set the initial temperature
to 30 °C (for the zone and walls) and 0 °C for ambient outdoor, the energy flux
from outside surface to outdoor starts from zero, which is not true.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Have you any suggestion to solve these two
problems ?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thank you<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>With best regards.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal>Salim MOKRAOUI<o:p></o:p></p>
<p class=MsoNormal>Faculté des sciences de Nancy - LERMAB<o:p></o:p></p>
<p class=MsoNormal>BP 239<o:p></o:p></p>
<p class=MsoNormal>54506 Vandoeuvre.<o:p></o:p></p>
<p class=MsoNormal>Tél 03 83 68 48 47 - mél salim.mokraoui@lermab.uhp-nancy.fr<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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