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[EnergyPlus_Support] Shading of many overhangs and calculation time





Hello,

I'm working on a high-rise tower block. I'd like to model balcony overhangs that provide shading to the glazing below.

There are 3 objects I can think of using:
1. Shading:Building
2. Shading:Zone:Detailed
3. Shading:Overhang

Knowing that I have about 500 balcony overhangs, I'm wondering if there are significant differences in terms of calculation time between these 3 options.

My thinking is that a Shading:Overhang object is only shading the glazing it's attached to. Whereas, for the 2 other options, E+ has to calculate the effect of each shading surface on all the other building surfaces in view.

Does it make that much difference?

Many thanks,
Patrick





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