Hello,
I would like to create a generic opaque material for which I just want to input the U-value.
From what I understand, thickness and conductivity are impacting the resulting U-value on the right of this Grasshopper script, but I can’t find the right way to achieve what I would like to do: input only 1 value (the U-value) for the material.
Is there a way to achieve this? I found a topic with the same question, but the file with a solution is no longer available.
Thank you,
Thank you @Erikbeeren
I tried it but I get this:
The resulting U-value is way below the input, even if the R-value is correct.
I saw that the U-factors include the resistance of air films on either side of the construction, but isn’t 3.125 to 2.067 quite a big difference?
I think there is something I don’t understand here.
The input is the U value, the output is the U factor which in includes the thermal resistances of the indoor and outdoor bounding air layrers
Thank you, so is it better to simulate my model with HB opaque no mass materials with my U-values, or to create a material that has a final U-factor that matches my original value?
I don’t quite understand the difference between U-value and U-factor, and explanations I find are mixing the two notions as the same thing.
Ok thanks a lot, this is much clearer.
It’s crazy how these values are impacting my initial value of 3.13 to a final 2.06 W/m².K, I definitely need to learn more about this.
The better the insulation the less influence this factor has,
Thanks a lot for taking the time to explain this clearly!
