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<p>Karol,</p>
<p> I have noticed some similar behavior in TRNBuild. It does not
seem to be systematic apart from the zone's thermal capacitance
which always gets set back to its default value during the
process. When I export a *.b18 to an *.idf, make changes, and then
reimport back to a *.b18 I usually take a look at the before and
after versions of the *.b18 using a text compare tool (I use
CompareIt but there are many others). <br>
</p>
<p> In your file it looks like a new HEATING type got added
(HEAT002) and that the heating in zone "parter" got changed from
HEAT001 to HEAT002. The set point temperature for HEAT001 and
HEAT002 are the same though so I would have expected the behavior
to be the same before and after the changes that you made in the
*.idf. <br>
</p>
<p>The other change I notice is in the windows; two unused WINDOW
types were removed and one new one was added.</p>
<p>I'm not sure that any of the above will help but I hope it does!</p>
<p>best,</p>
<p> David</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 05/20/2021 04:17, Karol BANDURSKI
via TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:000201d74d59$069d28f0$13d77ad0$@put.poznan.pl">
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<p class="MsoNormal">Dear Experts,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have problem with my b18 file (I use demo
version).<o:p></o:p></p>
<p class="MsoNormal">The first model consist of 2 floors
connected partially by Virtual Surface and partially by
visible surface. In this model I have set heating, cooling,
ventilation.<o:p></o:p></p>
<p class="MsoNormal">Then I have export model to .idf to change
VirtualSuface to partition with ADJ_WINDOW in SketchUp.<o:p></o:p></p>
<p class="MsoNormal">When I upload new building model and set in
my general model settings of heating and cooling don’t work –
temperature is not kept…<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Do you know what is the reason?<o:p></o:p></p>
<p class="MsoNormal">I enclose both building models (bud1_light
and bud2_light) and general model.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Kind regards,<o:p></o:p></p>
<p class="MsoNormal">Karol <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">--------------------------------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Karol
BANDURSKI Ph.D.<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN">Faculty
of Environmental and Energy Engineering</span><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Division
of Heating, Air Conditioning and Air Protection<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Poznan
University of Technology<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="PL"><a
href="https://www.researchgate.net/profile/Karol_Bandurski"
moz-do-not-send="true"><span style="color:blue"
lang="EN-US">https://www.researchgate.net/profile/Karol_Bandurski</span></a></span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<br>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI 53703 USA
P:+1.608.274.2577
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
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