I went into an issue with the Air Gap component and a bit of help would be much appreciated.
In order to make my own Windows Materials, I’m used to create custom materials for a pair of glass and use Honeybee_EnergyPlus Window Air Gap to create the air gap between those glass.
Recently, I checked the U value of these windows (using the EP Decompose component) and was really surprised about the results. I ended up with a U value around 2.3 W/m².K for an air gap and 1.6 W/m².K for an argon gap (with a modified version of the HB_window air gap).
So I’ve been trying to understand what went wrong, and it looks like no matter which thickness I specify for the air gap, the U value is still the same (for the air gap and thus for the EP construction component).
I attached a file to illustrate my problem.
Do you have the same problem by using the file attached ?
Is it related to the EP Decompose Component or is there someting wrong with the Window Air Gap component ? Or something else ?
From what I understand from this post : U-Value from Windows to Honeybee
HB always assume that the air gap is 1cm when calculating the U-value ?
But which U value Energyplus will use for the calculation ?
Thank you for your help.
test_air_gap.gh (493.9 KB)