[Radiance-general] Description of complex glass systems (geometry+ material)

[Greg Ward]

Hi Marina,

That is correct.  The "glass" type is only suitable for single-pane  
glazings, and simple ones at that.

Best,
-Greg

> From: marina aviles olmos <marina.aviles at gmail.com>
> Date: May 6, 2009 10:04:20 AM PDT
>
> Hi Greg,
>
> thanks.
>
> What I actually try to do in a part of my current research is a
> comparative study of the daylight efficiency of different glass  
> systems
> and some of this glasses are switchable, so thanks the link.
>> From your answer, I guess that the glaze2.cal is not the exact  
>> script to
> this ones although the results will be quite accurate.
>
> The method that Jack describes has some points that I can  
> understand at
> the moment, so I have tried (for the moment) the first method:
>
> void BRTDfunc double_glazing_a
> 10
> if(Rdot,cr(fr(0.075),ft(0.831),fr(0.153)),cr(fr(0.188),ft(0.158),fr 
> (0.075)))
> if(Rdot,cr(fr(0.075),ft(0.899),fr(0.134)),cr(fr(0.150),ft(0.215),fr 
> (0.082)))
> if(Rdot,cr(fr(0.083),ft(0.88),fr(0.141)),cr(fr(0.150),ft(0.195),fr 
> (0.083)))
> ft(0.831)*ft(0.158)
> ft(0.899)*ft(0.215)
> ft(0.88)*ft(0.195)
> 0 0 0
> glaze2.cal
>
> 0
> 9
> 0 0 0
> 0 0 0
> 0 0 0
>
>
> and the results looks like right, but just to be sure:
>
> the descrition of:
>
> mod glass id
> 0
> 0
> 3 rtn gtn btn
>
> is not included in this cases of double glazing. Is it right?
> and, it is only included, I guess after your mails, only in monolitic
> not double glazings, isn't it?
>
>
> Marina