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Dear Mirjam,<br>
<br>
Are you sure that temperatures observed with the other model are "Air
temperature"? <br>
Maybe the model gives not air temperature, but operative temperature,
which is a combination of the air temperature and the temperature of
the surrounding surfaces. <br>
In TRNBUILD air temperature is given by the following relation : Top =
Aop ⋅ Tair + (1-Aop) ⋅ Tsurf<br>
<br>
Best regards, Adrien<br>
<br>
<br>
Mirjam Peters a écrit :
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<div class="Section1">
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US">Hi TRNSYS-users,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US">I am trying to simulate a simple office room in
Simulation Studio and TRNBuild and to compare the results with another
building simulation program. I’ve checked all inputs (like climate,
ventilation, internal gains etc.) and these are the same in both
simulations. However, with everything I try, there is a significant
difference in room air temperature of the two simulations. The TRNSYS
air temperature is always several degrees higher than the air
temperature in my other model, but the temperature graph shows the same
course (it seems to be just shifted up)!<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US">Does anyone has come across the same problem? And/or has
someone any ideas on how to check what can be the difference in
inputs/both simulations?
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US">Could it be an idea to use a single zone building model
instead of type 56 for my single room simulation?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US">Thanks in advance.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="line-height: 12pt;"><span
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lang="EN-US">With kind regards,<o:p></o:p></span></p>
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lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="line-height: 12pt;"><span
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lang="EN-US">M.A.E. (Mirjam) Peters Msc<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height: 12pt;"><span
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