Hello Everyone,
It was really nice meeting some of you at the Radiance conference. As a few of you already know I am really new with Radiance and am now shifting from Desktop Radiance to Radiance. (Thanks a lot Francesco.. Cygwin is a real hit, Thanks Rob for getting me started )
I have been trying to do some runs in Radiance wherein I am calculating illuminance levels at a workplane grid for 4 daylighting configurations. I will be comparing these results with results from Superlite and eventually with DOE 2 so as to determine the error in the calcs in DOE 2
The configurations are 36wide x 30 deep x 10' high room with one window on the whole south face.
The same room with 2). a light shelf 3). 4 skylights 4) roof monitor.
Presently I am still doing the calcs with simple room with one window.
Now for the newbie questions.
1. When I am running rtrace I am getting a message warning no light source found. I am using a sky without sun and specifying -B. Is this because of the sky type or some other reason since I am getting the values which seem reasonable.
2. Since I am comparing results from superlite it is important that the geometry and material properties are exactly the same.The glass type in Superlite is a clear glass with 85% transmittance and 5% reflectance. How do I specify a similar glass type in radiance. The lib shows one with same properties as
void glass E178-6_glass
0
0
3 0.61271 0.84589 0.68805
void BRTDfunc E178-6_front
10
0.56202 0.77639 0.63125
0.24487 0.09924 0.22543
0 0 0
.
0
9 0 0 0 0 0 0 0 0 0
void BRTDfunc E178-6_back
10
0.56202 0.77639 0.63125
0.22373 0.13212 0.24437
0 0 0
.
0
9 0 0 0 0 0 0 0 0 0
Is this what I should be using or simply put it as (for 85%transmittance)
void glass class_lglass
0
0
3
0.927 0.927 0.927
I know the questions may seem really simple for the advanced users but I need your guidance to proceed.
Thanks
Arvinder
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