Hi all,
I know this kind of question has already been asked, but I can't seem to find a complete answer, so here it is again, maybe someone can help :
I'm using a window type in a building simulation, and for this I choose a window from the library "/American/w4-lib", ID 2306. Thiw window type has 2 layers of glass separated by a layer of gas.
My question is regarding the Emissivity properties that can be read :
Emis F 0.840 0.060
Emis B 0.840 0.840
I just want to be sure of what that means : I guess "F" and "B" are for "front" and "back", but which of these sides is actually towards the interior of the building ?
Also, which window is on the interior side, and which one on the exterior side (1st or second column ?) ?
I think that for exterior walls, TRNSYS uses "back" to describe the "outer" face of the wall (outside). But I also read somewhere (..) that for instance "Rfsol" (so "front" reflectance) in the window description is also for the exterior facing side of the window.. In the end, I don't know if "front" is supposed to mean "interior facing side" or "exterior facing side".
Also, in the window description, there are dimensions (width, height). In the Window Type Manager, there are also dimensions taht you can enter ("For 1 glazing module", just below "slope of window"). Finally, in the different zones of my building where I actually use this type of window, there is an area which correspond to the area of the window I drew in sketchup.