The results for the energy analysis does not change irrespective of adding HB shades or not. I initially assumed that the shades are probably not too deep and hence there is no effect, but I tried adding very long overhang, and yet no difference.
It is very similar to this issue listed on the forum earlier.
Is there a fix to this? Or would it be preferred if I attach my model to go through this?
Without a minimal sample file to know what you are talking about, its hard to know if you are just not assigning the shades correctly for your simulation or if shade just doesn’t have a significant impact for your case.
ENERGY ANALYSIS-SHADE ISSUE.gh (845.9 KB)
Here’s the very simplified version of the grasshopper script that’s relevant to this issue.
Irrespective of the depth of the shades constructed or no matter how many have been added there doesn’t seem to be an evident difference, which in my opinion, in theory is impossible.
Hi @deepthi.ravi, I’m having the same issue with an overhang shading not affecting the sDA and ASE daylighting values. Were you able to find a solution?
Unfortunately haven’t found a solution to this yet.
This screenshot does a pretty good job summing up why this building is not envelope-driven:
Just look at that electric equipment intensity. 105 kWh/m2. I’d be surprised if the building solar load was a quarter of that. So that’s why you see that shade has an effect but it’s so small in comparison to what is really driving the cooling load - the electric equipment.
When you have a building like this that is not driven by the envelope loads, you have to focus on strategies that work with the internal loads if you want to make a meaningful impact on the energy use. Maybe you picked the large office Building template for this model, which has a data center in the electric equipment loads. So good strategies for a building with a data center like this would be things like a heat recovery chiller (making use of the center’s waste heat to warm the other parts of the building when they need heating).
Yes, that’s true. I remodeled a much smaller size office and removed the equipments to check if the shades had an impact, and they did.
