[TRNSYS-users] Shading factors

[David BRADLEY]

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:
>
> Hello everyone,
>
> 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?
>
> 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?
>
> Big thanks in advance!
>
> Best regards,
>
> Manfred Schindler
>
>
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-- 
***************************
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 at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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