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[EnergyPlus_Support] Re: Overlap shading - window heat gain without shading higher than using 80% transmittance shading





Hi,

Wich version of E+ do you use ?


In E+ you define a maximum overlap calculation limits in the object "ShadowCalculation" (15000 below). The number of overlapping increases quickly, because each surface can multiply by two the number of overlapping. So if SketchUp set a small limit you can have problem from that.

ShadowCalculation,
DetailedTimestepIntegration,
1,
15000,
SutherlandHodgman,
SimpleSkyDiffuseModeling;

If it is the case, you have a message in the E+ err file : "** Warning ** DeterminePolygonOverlap: Too many figures [>15000]  detected in an overlap calculation. Use Output:Diagnostics,DisplayExtraWarnings; for more details."

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Posted by: f.simon.mail@xxxxxxxxx


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