Let me know if you have more questions on this topic, otherwise please accept as a solution so that others can benefit from this information. You can start fine-tuning your material and. eco file as I mentioned above, before running Radiance.įor a first pass, go ahead and assume it is a typical window and see what Ecotect outputs from Radiance. You will then have to paste that file into the same. rad file that will approximate the daylighting properties of the diffused components. If you forward me more info on the particular product, I may be able to create a. rad file, but there are still quite a few things that needs to be known about the particular product. I have developed a little spreadsheet program that helps me derive the correct values to create this diffuse material. rad file if you do not have much information from the manufacturer, which is too often the case. Unfortunately, it is very difficult to manually create this. rad file" option in the last window of the Radiance wizard. eco file, and make sure you select the "Check for Material. rad material and copy this file into the same folder as your.
I do not feel Ecotect does a great job at creating this diffuse material. rad file for a translucent material, which is more complex than a simple window because it also has some diffuse properties that a simple window object does not have. As soon as the Light Transmittance is less than 0.20, Ecotect will create a. HOWEVER, things become very tricky when the material is not quite a transparent window but is translucent, like your product. rad material file based on the Light Transmittance of the window, and use it in the Radiance calculations. Typically, when using Radiance, Ecotect will create its own. You do not have to create any layers for this as long as you can put the Light Transmittance in the Material Property window. Set the Solar Heat Gain Coefficient (SHGC) to 1.0, and set the Visible transmittance to what the manufacturer lists for Light Transmission. To use in Ecotect for Daylighting, create a new WINDOW material in the Material Assignments control panel.
The manufacturer should have a specification sheet for the product that lists its thermal properties as well as its daylighting properties such as light transmission. What is the actual brand? Polygal or Gallina? I have used the same material in some residential projects.
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