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Dear Manfred,
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:
*** Notice at time : 0.000000
Generated by Unit : 56
Generated by Type : 56
Message : Shading mask file *.shm for external windows exists and will be used.
Best,
Christina
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Transsolar KlimaEngineering Stuttgart | München | Paris | New York
Transsolar Energietechnik GmbH | Curiestraße 2 | 70563 Stuttgart Geschäftsführer: Matthias Schuler, Thomas Auer, Stefan Holst, Dieter Schnelle Registered at Amtsgericht Stuttgart HRB 23347 | USt-IdNr.: DE 152272639
The simulation project you have sent will be stored on the local servers of Transsolar Energietechnik GmbH for the duration of the project support. Our employees are obliged by us to confidentiality. After this period, all project-related data is deleted.
The storage of your personal e-mail and other contact information is based on the mutual interest in the execution of this traffic and on a mutual business contact. If you have any questions, please contact our data protection officer at privacy@transsolar.com. Our privacy policy can be found here. Von: TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org> im Auftrag von Manfred Schindler via TRNSYS-users <trnsys-users@lists.onebuilding.org>
Gesendet: Freitag, 13. August 2021 12:07 An: 'David BRADLEY' <d.bradley@tess-inc.com> Cc: Manfred Schindler <ma0022@technikum-wien.at>; trnsys-users@lists.onebuilding.org <trnsys-users@lists.onebuilding.org> Betreff: Re: [TRNSYS-users] Shading factors Hey David,
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. 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 à there was a difference in radiation on the window. 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. Best regards, Manfred
Von: David BRADLEY [mailto:d.bradley@tess-inc.com]
Manfred, 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. kind regards, David
On 08/11/2021 04:41, Manfred Schindler via TRNSYS-users wrote:
-- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 3 North Pinckney Street - suite 202 Madison, WI 53703 USA P:+1.608.274.2577 d.bradley@tess-inc.com http://www.tess-inc.com http://www.trnsys.com |