[TRNSYS-users] Shading

[Sancho,Fernando]

For those who have the same problem,

I used Sombrero software to simulated the factor of shaded area every hour of the year. Trough a data reader I combined this result with the radiation data in Trnsys to obtain the total amount of energy along a year.

But I found some problems, that I´m trying to solve right now, with the diffuse radiation: The diffuse radiation depend on the Horizontal beam radiation and the total horizontal radiation, but this way results the diffuse radiation on the shaded area sometimes bigger than on the same unshaded area. And the modell should not consider reflexion on the shadow elements.

Anyone have experience with these problems?
Thanks    


 



Von: Sancho,Fernando
Gesendet: Mi 24.11.2010 17:42
An: trnsys-users at cae.wisc.edu
Betreff: [TRNSYS-users]  Shading


(or how simple problems are not that simple ;-))
Hallo dear Trnsys-users,
I knew   that type 68  simulates the shade from an external object... so I was  sure I could do it quick and easily... but my collector field is quite big and the objects are near so I can not define an unique  "obstruction.dat" because that would be referred to a point, not a surface.
I´ve  already checked the archives but I didn´t find any solution... Is there any way to do it better than divide "manually" the surface in different small ones?????
Thanks in advanced
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