Honeybee Custom Shade Geometry Results

grasshopper honeybee
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1

Hi All,

I have been trying to simulate the impact of a custom facade geometry on the peak solar gain admitted through fixed glazing, but slightly puzzled by the results seen with and without this shading applied (and all other variables fixed).

I am generating a custom diamond shading facade geometry with triangular apertures within (image below). For a south facing shoebox model (10.5m wide x 6m deep), I’m getting a peak solar gain of over 70 W/m2 without shading (quite poor), and down to 6 W/m2 with shading (almost too good). After editing the depth of this shading the peak solar gain doesn’t respond and stays at 6 W/m2. This suggests that EnergyPlus is not recognising the shade device properly, but the Honeybee geometry preview shows the geometry correctly.

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image692×524 81 KB

My GH file is attached. Please could someone help troubleshoot this?

606_03 PEAK SOLAR GAIN MODEL V2.gh (334.2 KB)

Thanks,
James

2

Hi Again, just flagging this in the event that anyone can help?

3

Hey @jwoodall ,

Your file doesn’t have any geometry internalized and it’s pretty hard to figure out what you want us to look at but I can at least say that this solar distribution is not the best:

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image1788×1042 122 KB

If you really care about solar load, I would recommend using one of the better options and maybe using the PixelCounting method.