[TRNSYS-users] recognition of the shm file during trnsys simulations

[Marion Hiller]

Dear  Pauline,

 

Ntype 931 doesn’t include shading effects, thus it should bet he same as
type15-6 output “total tilted surface radiation”.

For checking whether the SHM is used please check

- NTYPE 101 OSHADB Total shading factor of external window for direct
radiation incl. geometric shading

- NTYPE 102 OSHADD Total shading factor of external window for diffuse
radiation incl. geometric shading

or

- NTYPE 103 IBSHAD

- NTYPE 103 IDSHAD

 

Concerning the shading matrix:

99 ->  sun is behind the window no shading

0…. 1 -> sunlit fraction (0 … shaded, 1 … sunlite (no shade))

The hemisphere is divided into patches acc. to the tregenza model. 

In the attached file includes the patch number, the zenith and azimuth
angle for the centre point of the patch.

 

 

Best regards,

 

Marion

 

Dipl.-Ing. Marion Hiller 
TRANSSOLAR: KlimaEngineering - Technologien für energieeffizientes Bauen
und Nutzerkomfort in Gebäude 
Munich - New York - Stuttgart + 49.711.67976.0 

Transsolar Energietechnik GmbH, Curiestrasse 2, 70563 Stuttgart 
Amtsgericht Stuttgart - HRB 23347, Steuernummer 99073/00911, USt-IdNr.:
DE152272639

Geschäftsführer: Dipl.Ing. Matthias Schuler, Dipl.Ing. Thomas Auer,
Dipl.Phys. Stefan Holst, Prof. Dipl.-Ing. Bleicher 

 

 

  _____  

Von: Pauline GELIN [mailto:p.gelin at katene.fr] 
Gesendet: Freitag, 15. Juli 2011 11:58
An: Marion Hiller; trnsys-users-bounces at cae.wisc.edu
Betreff: recognition of the shm file during trnsys simulations

 

Dear all, 

 

I still have encountered problems with the shm file, coming from my
trnsys3d drawing, and now the results of my simulations in trnsys17
studio.

 

To  check if shm file was really used I compared for a window which
normally has shading from buildings around it, like 2 wingwalls :

- the trnbuild output n°931 “total external solar radiation on external
windows including frame”

- the type15-6 output “total tilted surface radiation”

 

I noted no difference !

So that means simulation didn’t take account of wingwalls drawing in
trnsys3d. 

 

So I read the shm file with a notepad. 

I understood that each column represents a window and when there is 0.99
there is no radiation on it. 

But what represent the 576 lines (not the hours, days, months or angles
?) ? 

And above all, how are the other fractions used ?

 

Thanks a lot for everyone who could explain me that. 

 

Best Regards, 

 

Pauline Gelin

KATENE engineer

mailto:p.gelin at katene.fr
Les Pléiades
15 rue Emile Zola
69517 VAULX EN VELIN 

FRANCE

 

 

 


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