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Dear Manfred,</div>
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you are correct, when the radiation mode is set to standard, only the .shm, no .ism will be generated. If you have a shading matrix in your simulation folder which fits your zone and surface information, it will be used for the calculation. You can also check
if an shm has been used by looking at the .lst file. There you will find a notice saying: </div>
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*** Notice at time : 0.000000
<div> Generated by Unit : 56</div>
<div> Generated by Type : 56</div>
Message : Shading mask file *.shm for external windows exists and will be used. </div>
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Best,</div>
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Christina</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>Von:</b> TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org> im Auftrag von Manfred Schindler via TRNSYS-users <trnsys-users@lists.onebuilding.org><br>
<b>Gesendet:</b> Freitag, 13. August 2021 12:07<br>
<b>An:</b> 'David BRADLEY' <d.bradley@tess-inc.com><br>
<b>Cc:</b> Manfred Schindler <ma0022@technikum-wien.at>; trnsys-users@lists.onebuilding.org <trnsys-users@lists.onebuilding.org><br>
<b>Betreff:</b> Re: [TRNSYS-users] Shading factors</font>
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<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif; color:#1F497D">Hey David,</span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif; color:#1F497D"> </span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif; color:#1F497D">first, thanks for the answer. I solved the problem now and want to let everybody know the solution, if somebody wants to walk the same path.</span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif; color:#1F497D">Your way of thinking was mine as well – so I knew that the requirement for convex zones only applies to the detailed radiation modes, but in all the documentations
is written that in order to generate a shm-file, the detailed model for beam radiation distribution has to be activated. If I do that, I can’t even generate the shading/insolation matrix, because it is one button for both ism and shm file and the result is
an error message („The internal solar distribution did not sum up 1. Make sure that the zones with detailed beam radiation mode are CONVEX and CLOSED!!”), due to concave zone. So I tried to generate the shading/insolation file with the standard mode and I
received the shm-File. But I didn’t know, if the matrix was taken into account in the simulation. I simulated once with shm file in the directory and once without
</span><span lang="EN-GB" style="font-family:Wingdings; color:#1F497D">à</span><span lang="EN-GB" style="font-family:"Arial",sans-serif; color:#1F497D"> there was a difference in radiation on the window.</span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif; color:#1F497D">So: also with standard mode for beam radiation distribution the shm-matrix is used by the simulation, you just have to generate it in advance.</span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif; color:#1F497D">Best regards,</span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif; color:#1F497D">Manfred</span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif; color:#1F497D"> </span></p>
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<p class="x_MsoNormal"><b><span style="">Von:</span></b><span style=""> David BRADLEY [mailto:d.bradley@tess-inc.com]
<br>
<b>Gesendet:</b> Mittwoch, 11. August 2021 15:42<br>
<b>An:</b> TRNSYS users mailing list at OneBuilding.org <trnsys-users@lists.onebuilding.org><br>
<b>Cc:</b> Manfred Schindler <ma0022@technikum-wien.at><br>
<b>Betreff:</b> Re: [TRNSYS-users] Shading factors</span></p>
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<p class="x_MsoNormal"> </p>
<p>Manfred,<span style="font-size:12.0pt"></span></p>
<p> I believe that the requirement for convex zones only applies to using the detailed radiation mode to deal with the interior radiation exchange. In other words I think it applies only to the *.vfm file and not to the *.shm file since the *.shm file deals
with shading on the outside of the building. Please someone correct me if I am wrong about that.</p>
<p>kind regards,</p>
<p> David</p>
<p> </p>
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<p class="x_MsoNormal">On 08/11/2021 04:41, Manfred Schindler via TRNSYS-users wrote:</p>
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<p class="x_MsoNormal"><span style="font-family:"Arial",sans-serif">Hello everyone,</span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif"> </span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif">I use trnsys3D to import to TRNBuild and I have a few shading objects. In the existing model I just used shading factors from PHPP, only differencing between summer and winter.
Now I want to have more detailed shading factors and want to use the shading matrix (shm) but as I read in the documentations I need convex zones for it. Or is it working with concave zones, if I just use the detailed radiation model for the beam radiation
distribution (and for the diffuse radiation distribution and the longwave radiation exchange within a zone the standard models)? As far as I can see the geometry of a zone is indifferent for the shm-File – isn’t it?</span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif"> </span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif">If it really does not work like that, my idea was to build up the same 3D-Modell but with only fictitious concave zones, so I could get the shading factors in the shm-file. Is
there any type I can use to read the shm-matrix into my simulation with the concave zones?</span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif"> </span></p>
<p class="x_MsoNormal" style="margin-bottom:12.0pt"><span lang="EN-GB" style="font-family:"Arial",sans-serif">Big thanks in advance!</span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif">Best regards,</span></p>
<p class="x_MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif">Manfred Schindler</span></p>
<p class="x_MsoNormal"><span style="font-size:12.0pt; font-family:"Times New Roman",serif"><br>
<br>
</span></p>
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<pre>***************************</pre>
<pre>David BRADLEY</pre>
<pre>Principal</pre>
<pre>Thermal Energy Systems Specialists, LLC</pre>
<pre>3 North Pinckney Street - suite 202</pre>
<pre>Madison, WI 53703 USA</pre>
<pre> </pre>
<pre>P:+1.608.274.2577</pre>
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<pre> </pre>
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