[Radiance-general] Modelling glass louvres with frit in GLAZE

[Jack de Valpine]

Hi Lars and David,

For the glaze script what is needed for the frit material is T (rgb), 
Rcoated side (rgb) and R glass side (rgb) all measured at 100% coverage 
with the frit material. In the past I have been able to get this 
information from glazing manufacturers. It does necessitate a call to 
the manufacturer and speaking to someone on the technical side who can 
get the information.

Not sure what the system is that you are simulating. Have you taken a 
look at what Window 6 can provide?

-Jack

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# Jack de Valpine
# president
#
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On 3/19/2011 10:18 AM, Lars O. Grobe wrote:
> Hi David!
>
>> I am trying to get transmission matrix of a shading system with genBSDF.
>> The system is made from double glazed window and glass louvres with silk
>> screen print with coverage of 55%.
>
> Is the print translucent? For transmittance, it makes a difference 
> whether you have a translucent print (resulting in reduced direct 
> transmittance + scatter) or an opaque, purely reflective print 
> (resulting in only reduced direct transmittance).
>
>> I am not sure what " Tr    Tg    Tb    Rcr    Rcg    Rcb    Rgr
>> Rgg    Rgb    Part " should be used for frit. Does anyone was working
>> with similar shading and have some values I can used, at least as
>> assumption? Or is there any way to find those values without actual
>> measurement?
>
> My guess it that you may be able to approximate these, but I would not 
> really believe in the results of such a complex system without being 
> able to compare to a measurement.
>
> Cheers, Lars.
>
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