Hi all,
I have 3 questions to ask:
1.
I have a proposed model with many windows with shading structures dividing the glazing (approx. 1/3 of glazing is above shading and the remaining 2/3 is below the shading, for each window). Therefore, I was forced to create 2 separate "object-windows", in order to model each real window.
Since in the baseline case no shading shall be modeled, may I just implement this as an equivalent horizontal glazing strip, while keeping the total fenestration area per cardinal orientation? Or do I have to guarantee exactly the same fenestration area per thermal zone?
2.
In this project there no opaque doors in the external walls, i.e. all doors are full glazed with manual external shading blinds. Table G3.1#5(d) states that manual fenestration shading devices such as blinds or shades shall be modeled or not modeled, the same as in the baseline, and I opted not to modeled it. Is it OK to do this? In this case is the glazed door considered a window?
3. Concerning internal doors, first of all I would like to ask if you usually implement them in your models, as I believe the increasing implementation time vs. results precision/improvement relation is not worth. Do you believe that implementing internal doors has real consequences regarding thermal comfort results (because of the possible increased ventilation for instance), or on any other result? I am gradually working in projects with more and more complexity and implementing many internal doors is sometimes a time-consuming process. Do we have to do this in our energy models?
I hope my questions are clear and thank you in advance.
BR,
Fábio
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5909 thumbs up
March 29, 2018 - 2:06 pm
1. The total fenestration area must be the same in both models. When you separate the windows for shading you should model it so that the glazing area does not change. I am not sure how you would change the area per direction and without keeping it the same per thermal zone?
2. It is OK not to model interior shading devices. See the definitions in 90.1. Doors more than 50% glass are basically considered windows.
3. We don't usually model interior doors.