[Radiance-general] Frit Glass trans Paramters

[Jack de Valpine]

Hi Aditya,

Unfortunately, the glaze and other script is a csh script, so it has to 
be run under unix/linux...

-Jack

-- 
Jack de Valpine
President

Visarc Incorporated
www.visarc.com

channeling technology for superior design and construction

On 4/6/2015 8:00 PM, Aditya Potipireddi wrote:
> Andy/Jack,
>
> Thank for providing great resource. I am tying to follow to the 
> process outlined and have couple of more questions:
>
> 1) Since I am using radiance using DIVA for Rhino( Windows operating 
> system), it creates a Radiance folder with in the DIVA folder. I 
> navigated to the radiance folder via command prompt window and tried 
> to call for " glaze" it gave error as glaze is not recognized. I have 
> even installed the Radiance versions 4.3.a.2 for win32.exe that I 
> downloaded form NREL radiance releases. Is there a command error ?
>
> 2) The "lib" folder under both Radiance folders has only glaze.1cal( 
> single pane fritted) and glaze2.cal(double pane fritted) files , there 
> is no "glaze" file are these the same as glaze file?
>
> 2) does the example work flow example in the website use unix or 
> cygwin, if so do i need to install cygwin? and is there specific 
> version of radiance that i need to install ?
>
> 4) can I not execute glaze and optics2glazedb via windows?
>
> 3) Should the "optics2glazedb" file put in a specific location and 
> where does the generated database get written to. Also, what is the 
> file extension for optics2glazedb ?
>
> Appreciate your help and input.
>
> Regards,
>
> Aditya
>
>
> On Mon, Apr 6, 2015 at 12:24 PM, Jack de Valpine <jedev at visarc.com 
> <mailto:jedev at visarc.com>> wrote:
>
>     Hi Andy,
>
>     This seems as good a time as any. I put together a blog post about
>     Glass in Radiance <http://modsimvis.blogspot.com/>. I need to add
>     some information about the optics2rad script but have not gotten
>     around to it. But it may be a helpful resource as the topic
>     (glaze) does seem to come up.
>
>     Best,
>
>     -Jack
>
>     -- 
>     Jack de Valpine
>     President
>
>     Visarc Incorporated
>     www.visarc.com  <http://www.visarc.com>
>
>     channeling technology for superior design and construction
>
>     On 4/6/2015 2:27 PM, Andrew McNeil wrote:
>>     Aditya,
>>
>>     Trans isn't really a great option for modeling glazing with frit
>>     since the transmission properties don't change with angle. I'd
>>     recommend using the glaze script that comes with Radiance to
>>     build up your glazing material. You simply type 'glaze' at the
>>     command line and follow the prompts. the internal demo database
>>     already has the V175 frit.
>>
>>     Jack de Valpine gave a presentation describing how to use glaze
>>     to build up an IGU. And how to use data from LBNL optics to add
>>     entries to your glaze database (slide 10). He has the low-e
>>     coating you're proposing on slide 10, so you might be able to
>>     just copy it into your local database.
>>     http://www.radiance-online.org/community/workshops/2009-boston-ma/Presentations/devalpine_visarc_glazing.pdf
>>
>>     Best,
>>     Andy
>>
>>
>>     On Sun, Apr 5, 2015 at 10:57 PM, Aditya Potipireddi
>>     <aditect at gmail.com <mailto:aditect at gmail.com>> wrote:
>>
>>         Hi All,
>>
>>         I am trying to model frit glass with varying percentage( 20%
>>         to 60%)  of silk screen coverage(dots)  using trans material
>>         to compare illuminance levels and glare. I am using DIVA for
>>         Rhino simulation interface for Radiance simulation. I am
>>         representing the glass as a single surface in the model.
>>
>>         I am struggling to come up with the Transmitted
>>         specularity(Ts), Diffuse Transmission(Td) , Reflected
>>         specularity(Rs) and the Diffuse reflectance (Cr, Cg,Cb) , so
>>         as to calculate the A1 to A7 trans material values.
>>
>>         Any suggestion or pointers on how to estimate or get the
>>         above values?
>>
>>         for example,//I have the following frit glass assembly with
>>         60% coverage that I pulled form glass manufacture website.
>>
>>         1/4" (6mm) clear VE-85 #2 and 60% Coverage V175 #2
>>
>>         1/2" (13.2mm) argon space
>>
>>         1/4" (6mm) clear
>>
>>
>>         Appreciate your help!
>>
>>
>>         Best,
>>
>>
>>         -- 
>>         Aditya Potipireddi,
>>
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>>
>>
>>
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>
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>
>
>
> -- 
> Aditya Potipireddi, LEED AP
> 480.544.4936
>
>
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