[Radiance-general] Help!

[Reinhart, Christoph]

Dear Philip,

You might find this link useful:
http://www.autodesk.com/us/3dsmaxdesign/B3241.MentalRayValidation_v3.pdf
. 

Christoph

-----Original Message-----
From: radiance-general-bounces at radiance-online.org
[mailto:radiance-general-bounces at radiance-online.org] On Behalf Of Dan
Fitzpatrick
Sent: Friday, May 08, 2009 8:36 AM
To: Radiance general discussion
Subject: Re: [Radiance-general] Help!

Are you talking about average daylight factors and bre guidance?  The  
bre does make mention of "computer simulation" but doesn't go into  
detail.

In my experience I would either use radiance or the light studio  
radiance plug in for 3ds max for accuracy.

Dan


On 8 May 2009, at 13:26, "Philip Brogan"  
<Philip.Brogan at BuroHappold.com> wrote:

> Can anyone tell me if 3d max is certified daylighting calculation
> software? I guess what I'm asking is, is it suitable for use in design
> engineers to use as proof of compliance with design standards?
>
> Philip Brogan
>
>
> www.burohappold.com
>
> -----Original Message-----
> From: radiance-general-bounces at radiance-online.org
> [mailto:radiance-general-bounces at radiance-online.org] On Behalf Of  
> Greg
> Ward
> Sent: 05 May 2009 17:31
> To: Radiance general discussion
> Subject: Re: [Radiance-general] Description of complex glass
> systems(geometry+ material)
>
> Hi Marina,
>
> Looks about right to me -- does it reproduce the combined
> transmittance and reflectance you're measuring?  Are the interfaces
> separated by an air gap, or are some/all layers laminated with an
> optical adhesive?  In the latter case, the functions in glaze2.cal
> won't compute the correct combined transmittance and reflectances.
>
> -Greg
>
>> From: marina aviles olmos <marina.aviles at gmail.com>
>> Date: May 5, 2009 8:05:45 AM PDT
>>
>> Hi Robin, hi All
>>
>> yes I want to simulate a laminated glass in a double glass system.
>> This
>> laminated glass is a prototyp of a glazing system and there is no
>> information about it anywhere. It is also a quite complicated system
>> with embeded coating and interlayer and I can get its description  
>> from
>> Optics5. That's why I think the way to describe this glasses are with
>> the spectrometer measurements.
>>
>> I am still not sure anyway if I describe the glasses propertly.
>> Does anybody knows if this is right like this:
>>
>> #window geometry:
>>
>> double_glazing_a    polygon    window
>> 0
>> 0
>> 12    0        -0.18    0
>>        0        -0.18    3.34
>>       4.13    -0.18    3.34
>>       4.13    -0.18    0
>>
>>
>> #window material:
>>
>> void BRTDfunc double_glazing_a
>> 10
>> if(Rdot,cr(fr(rf1_r),ft(t1_r),fr(rf2_r)),cr(fr(rb2_r),ft(t2_r),fr
>> (rb1_r)))
>> if(Rdot,cr(fr(rf1_g),ft(t1_g),fr(rf2_g)),cr(fr(rb2_g),ft(t2_g),fr
>> (rb1_g)))
>> if(Rdot,cr(fr(rf1_b),ft(t1_b),fr(rf2_b)),cr(fr(rb2_b),ft(t2_b),fr
>> (rb1_b)))
>> ft(t1_r)*ft(t2_r)
>> ft(t1_g)*ft(t2_g)
>> ft(t1_b)*ft(t2_b)
>>        0 0 0
>>        glaze2.cal
>>
>> 0
>> 9
>>        0 0 0
>>        0 0 0
>>        0 0 0
>>
>> where I just have to substitute the next measured data:
>>
>> Red: 700nm --     rf1_r    rb1_r     rf2_r     rb2_r    t1_r     t2_r
>> Green: 546nm -- rf1_g    rb1_g    rf2_g    rb2_g    t1_g    t2_g
>> Blue: 436 --         rf1_b    rb1_b    rf2_b    rb2_b    t1_b    t2_b
>>
>>
>> Thanks again,
>>
>> Marina
>
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