<br><div><p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif">Dear
Trnsys-Users,</font></span></p><p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif"><br></font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif">I try to
model a double-skin facade on Trnsys, using Trnsys3d, the multiple nodes
feature and Contam.</font></span></p><p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif"><br></font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif">The double-skin
facade is a 1.2-meter wide and 2.8-meter high zone that is split vertically in
four 0.7-meter high zones separated by virtual surfaces that are not imported
in TRNBuild. I have imported the SketchUp model into Trnbuild. I have moved the
nodes of the double-skin façade into one single zone. </font></span></p><p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif"><br></font></span></p>
<p class="MsoNormal"><font face="arial, helvetica, sans-serif"><b><span lang="EN-US">I have set the radiation modes to “detailed
model”</span></b><span lang="EN-US"> (for beam,
diffuse and longwave radiation) only in zones where I want to perform detailed
radiation calculation. So I think I’m all set to generate the view-factor
matrix file but TRNBuild doesn’t calculate it: I don’t get any error when I
click on <i>Generate</i> < <i>Generate View-Factor Matrix</i> but<b> there is no matrices in the *.vfm file
that is generated </b>(only zones ID numbers and names, and a 0 below each line
– see attached file: <b>it looks like
detailed radiation mode is not selected in any zone</b>).</span></font></p><p class="MsoNormal"><font face="arial, helvetica, sans-serif"><span lang="EN-US"><br></span></font></p>
<p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif">I use
Trnsys 17.00.0019, Trnsys3d version 1.0.5.2 and TRNBuild 2.0.167.</font></span></p><p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif"><br></font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif">I’m sure
I’ve done something wrong but I can’t find my mistake in the user-guide or in
the trnsys-users archives. </font></span></p><p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif"><b>Does someone
know how I could generate proper view-factor matrices?</b></font></span></p>
<pre style="background:white"><span lang="EN-US"><font face="arial, helvetica, sans-serif"> </font></span></pre><pre style="background:white"><font face="arial, helvetica, sans-serif"><b><span lang="EN-US">I’m also facing the same problem with the shading matrix</span></b><span lang="EN-US">. I defined a shading group in Trnsys3d but it seems like TRNBuild ignore it when calculating the *.shm file: “<i>No window is shaded. Therefore no shading matrix file *.SHM is written!</i>” (even if I’m pretty sure several windows are shaded).</span></font></pre>
<pre style="background:white"><span lang="EN-US"><font face="arial, helvetica, sans-serif"> </font></span></pre><pre style="background:white"><span lang="EN-US"><font face="arial, helvetica, sans-serif"> </font></span></pre>
<pre style="background:white"><span lang="EN-US"><font face="arial, helvetica, sans-serif">I tried to compare my *.bui file to the *.bui file in the <i>3D_Building</i> example folder. I noticed that <b>there is a missing part in my *.b17 file</b> in the section <i>_EXTENSION_BuildingGeometry _</i>. Indeed the _EXTENSION_BuildingGeometry_END_ statement comes right after the description of the vertices. There is no part with description of vertices used by each wall of each zone like in the example file:</font></span></pre>
<pre style="background:white"><i><span lang="EN-US"><font face="arial, helvetica, sans-serif">zone EG_GB</font></span></i></pre><pre style="background:white"><i><span lang="EN-US"><font face="arial, helvetica, sans-serif">wall 1 1 2 3 4</font></span></i></pre>
<pre style="background:white"><i><span lang="EN-US"><font face="arial, helvetica, sans-serif">wall 2 5 6 7 8</font></span></i></pre><pre style="background:white"><i><span lang="EN-US"><font face="arial, helvetica, sans-serif">[…]</font></span></i></pre>
<pre style="background:white"><i><span lang="EN-US"><font face="arial, helvetica, sans-serif"><br></font></span></i></pre>
<pre style="background:white"><span class="Apple-style-span" style="font-family: arial, helvetica, sans-serif; ">I also noticed that when I try to update the Trnsys3d file to go back in SketchUp, description of surfaces comes with description of zones only for virtual surfaces so that when I open the updated Trnsys3d file in SketchUp, only virtual surfaces are drawn. </span></pre>
<pre style="background:white"><span class="Apple-style-span" style="font-family: arial, helvetica, sans-serif; ">I think these two comments might help solving the problem. </span></pre>
<p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif"> </font></span></p><p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif"><br></font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif">Any idea would help,</font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif">Thank you,</font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif"> </font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif">Damien.</font></span></p><p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif"><br>
</font></span></p><p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif"><br></font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font face="arial, helvetica, sans-serif">Attached: *.idf,
*_b17.idf, *.b17, *.vfm, *_shd.log, *_updated.idf</font></span></p></div>