[TRNSYS-users] shading device: modelisation of fixed and steep louver system

[David Bradley]

Bastien,
  You may have some better luck by writing the equations for how much 
solar is blocked by the louvers as a function of solar altitude angle, 
then using Type56's "external shading device" on your windows with the 
result of your equations as the shading factor. The disadvantage is that 
both diffuse and direct radiation will be blocked equally but I think 
that it is still an improvement over Type34 in this case.
Kind regards,
 David


Bastien GARBAY wrote:
> Hi,
>  
> I would like to establish a model of a external louver system with fix 
> and steep blades. I used the Type 34, but this type is not 
> appropriate to represent the real shading effect of the louver system 
> in function of the solar angle. On the building, this shading louvers 
> enable to protect a room from the sommer sun but not from a winter 
> sun, in order to have moderate temperatures in summer and solar gains 
> in winter.
>  
> Have someone already tried to represent such a louver system? A 
> picture of this system is on the following link: 
> http://greensource.construction.com/products/images/gs-image-Colt-08-06-07.jpg
>  
> Thanks
>  
> Bastien
>  
> ------------------------------------------------------------------------
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users
>   

-- 
***********************************************************************
Thermal Energy System Specialists (TESS), LLC 
David BRADLEY                      22 N. Carroll Street - Suite 370 
Partner                            Madison, WI 53703 
                                   USA
P: +1.608.274.2577 
F: +1.608.278.1475
E-mail: bradley at tess-inc.com 
Web Pages:  http://www.tess-inc.com    and      http://www.trnsys.com

***********************************************************************

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/trnsys-users-onebuilding.org/attachments/20081208/74a8b236/attachment-0001.htm>