[Radiance-general] Transmission Matrix.

[Andrew McNeil]

Hi Ogata,
After zooming in on your pdf I realized that you were doing it for a user
generated glass layer.  We've discovered that there is a bug for glass
layers without spectral data.

So your options until the bug is fixed:
1 -  you could use genBSDF with a single polygon and glass material.
2 - you could find an existing glass library entry with the same visible
transmission.

Andy





On Tue, May 14, 2013 at 4:49 PM, Andrew McNeil <amcneil at lbl.gov> wrote:

> Hi Ogata,
>
> It looks like you are trying to create a BSDF for a single layer system,
> where the single layer is a shading layer.  Unfortunately, this can't be
> done in Window.  There's really no reason Window couldn't do the optical
> calculations for a single shading layer, but Window can't do thermal
> calculations for a system that allows free air movement through.  And since
> Window has one "calculate" button that does everything single layer shading
> systems have been prohibited.
>
> The annoying work around is:
> 1. add a layer of glass to your system.
> 2. turn on debug output by checking the box in preferences/options - this
> outputs csv files containing transmission and reflection data for each layer
> 3. copy the data from the shading layer csv file for front and back
> transmission and reflection and paste into the appropriate tags of the xml
> file.
> 4. fix other xml tags as necessary (for example you could change the
> thickness but I don't think it is necessary for Radiance)
>
> Andy
>
>
>
>
> On Tue, May 14, 2013 at 6:16 AM, Germán Molina Larrain <gmolina1 at uc.cl>wrote:
>
>> mmm, I am not sure... I think I have seen that warning, but I think it
>> never caused me trouble. I have never imported a layer anyway.
>>
>> Good luck!
>>
>> German
>>
>>
>>
>> 2013/5/14 <oga6ya at yahoo.co.jp>
>>
>> Hi German,
>>>
>>> Thank you for your advice.
>>>
>>> But when the warning occured, I can't make xml file for Three-phase
>>> method.
>>>
>>> Of course, the data prepared by WINDOW doesn't cause the warning, I find
>>> the warning just by the data we made.
>>>
>>> ogata
>>>
>>>
>>>
>>>   ----- Original Message -----
>>> *From:* Germán Molina Larrain <gmolina1 at uc.cl>
>>> *To:* oga6ya at yahoo.co.jp; Radiance general discussion <
>>> radiance-general at radiance-online.org>
>>> *Date:* 2013/5/13, Mon 22:11
>>> *Subject:* Re: [Radiance-general] Transmission Matrix.
>>>
>>> For what I understand, that is not an error, it is more like a
>>> warning... what I mean is that you can still use that for the Three-phase
>>> method.
>>>
>>> I tend to think that the calculations may be spectrally-averaged, wich
>>> may be important or not depending on the level of spectral-selectivity of
>>> the glazing you are using.
>>>
>>>
>>> Lets wait and see what the expert say anyway.
>>>
>>> Best Regards,
>>>
>>> German
>>>
>>>
>>> 2013/5/13 <oga6ya at yahoo.co.jp>
>>>
>>> Hi all
>>>
>>> I have a question about Three-Phase Method Tutorial.
>>>
>>> I'm trying to make Transmission Matrix.
>>> I'm using WINDOW7.
>>> I made new glass to resarch for the influence of visible transmission.
>>> After I set the Trans,Front Trans,Back ect.. I conducted the calculation by
>>> Calc [F9] button. Following error massage came out to me. How can I solve
>>> it?
>>>
>>> One of the layers for Glazing System 1 does not have detailed spectral
>>> data or the spectral data analysis was disabled in Preferences. This may
>>> result in incorrect results for optical properties such as SHGC and TVIS.
>>> Custom layers with detailed spectral data can be created in Optics and
>>> imported into the Window Library
>>>
>>>
>>> I attatched my situation.
>>>
>>> ogata
>>>
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>>>
>>>
>>>
>>>
>>>
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>>
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