[Radiance-general] calculation of shading coefficient with Radiance?

[Valeria De Giuli]

Hi Greg,
thank you for your reply!  How can I change the contents of the channels?
Thank you in advance,
Valeria

2008/3/18, Greg Ward <gward at lmi.net>:
> Hi Valeria,
>
>  This is probably one for the FAQ (if only there was a FAQ)...
>  Radiance has a preferred color space, but it does not require that
>  you use it.  You can assign the three (RGB) channels to be anything
>  you like, including total solar transmission/reflectance/whatever.
>  Bear in mind that solar heat gain is also affected by thermal
>  conductance and convection, which are not considered in an optical
>  ray-tracing calculation such as Radiance.  To the extent that IR
>  behaves as visible light, however, Radiance may be trusted.
>
>  I hope this helps.
>  -Greg
>
>  > From: "Valeria De Giuli" <valeriadegiuli at gmail.com>
>  > Date: March 17, 2008 7:57:20 AM PDT
>
> >
>  > Hi all!
>  > Sorry for my bad English. I'm a quite new user of Radiance and I'm
>  > interested in energy performance of buildings. I would like to know if
>  > it is possible to calculate the performance of a shading system
>  > (venetian blinds, light shelf, etc.) in terms of reducing solar
>  > radiation. Does Radiance consider all the spectrum in calculating
>  > irradiance? My aim is to try different shading systems in a office
>  > room and to analyse their bahaviour in terms of shading coefficient.
>  > Any help would be appreciated. Thanks in advance,
>  > Valeria
>
>
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