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<p class="MsoNormal">Manfred,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">The reduction of orientation may cause the encountered error.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The calculation of the shading matrix is based on the “true” orientation of the surface.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">If the position of the sun patch is behind the surface the sunlit factor in the shading matrix is set to 99. (further information: Trnsys18\Documentation\ 05-MultizoneBuilding.pdf)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thus, it might happen that a window receives direct radiation due to the modified orientation, but it wouldn’t for the “true” orientation.<br>
Type56 encounters a mismatch (direct radiation but sunlit fraction 99. ) und returns the mentioned error message.<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"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Kind regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Marion<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-fareast-language:DE">Transsolar Software Team<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#4472C4;mso-fareast-language:DE">hotline@transsolar.com</span><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-fareast-language:DE"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-fareast-language:DE">Transsolar
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-fareast-language:DE">Stuttgart | Munich | Paris | New York<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-fareast-language:DE">Transsolar Energietechnik GmbH | Curiestrasse 2 | 70563 Stuttgart | Germany<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-fareast-language:DE">CEO: Matthias Schuler, Thomas Auer, Stefan Holst, Dieter Schnelle
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-fareast-language:DE">Registered at Amtsgericht Stuttgart HRB 23347 | USt-IdNr.: DE 152272639<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:DE"><o:p> </o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="mso-fareast-language:DE">Von:</span></b><span style="mso-fareast-language:DE"> TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org>
<b>Im Auftrag von </b>Manfred Schindler via TRNSYS-users<br>
<b>Gesendet:</b> Donnerstag, 14. Oktober 2021 11:46<br>
<b>An:</b> trnsys-users@lists.onebuilding.org<br>
<b>Cc:</b> Manfred Schindler <ma0022@technikum-wien.at><br>
<b>Betreff:</b> [TRNSYS-users] MULTIZONE BUILDING - SHADING RATIO OF A WINDOW IS LARGER THAN 1 OR LESS THAN 0<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Hallo everyone,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif">I’m having a problem with the simulation of my 45-zone-model – at timestep 8,75 (0,25 h steps) the error message(s) “MULTIZONE BUILDING - SHADING RATIO OF A WINDOW IS LARGER THAN
1 OR LESS THAN 0” appears. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif">For all my windows I have an external shading which is an input from dck. But I don’t have a separate equation per window. I simplified the orientations to N-E-S-W have these orientations
for each zone </span><span lang="EN-GB" style="font-family:Wingdings">à</span><span lang="EN-GB" style="font-family:"Arial",sans-serif"> means 4x45=180 shading equations. I checked the equations and the printed values – are correct – and also set it to constant
0 – still the error messages. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif">In an existing conversation from the archieve (“2nd error generating shading/insolation matrix -> too many shaders on projection plane”) the problem was solved by adding MIN and
MAX function to the shading equations – with this addition also the iterations in-between, not just the last iteration, have to be between 0 and 1. But I tried it and it didn’t help.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif">In the same conversation a previous error was solved by reducing the surface numbers, because the surface numbers were higher than 999
</span><span lang="EN-GB" style="font-family:Wingdings">à</span><span lang="EN-GB" style="font-family:"Arial",sans-serif"> could this be the problem? I have a quite big building with almost 1700 surfaces, especially a lot of single windows. I could simplify
the windows and combine them per wall-surface to one big window, but I want to check your expertise first.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif">Kind regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Arial",sans-serif">Manfred Schindler<o:p></o:p></span></p>
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