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Does DaylightingDevice:Shelf causing unenclosed zone output inaccurate results?

asked 2018-11-27 12:25:11 -0600

mldichter gravatar image

updated 2018-11-27 12:30:52 -0600

Simulating DaylightingDeviceShelf.idf from the Energyplus 9.0 Examples Files, with an Output:Diagnostics,DisplayExtrawarnings object added, creates a warning

* Warning * CalculateZoneVolume: The Zone="DAYLIT ZONE" is not fully enclosed. To be fully enclosed, each edge of a surface must also be an edge on one other surface.

The Warning continues saying the zone volume calculation is done by

* ~~~ * The zone volume was calculated using the floor area times ceiling height method where the floor and ceiling are the same except for the z-coordinates.

Granted, the proper way to specify a light shelf is energyplus is unusual, but it shouldn't create this warning.


What I really care about though is if this will or will not output accurate results. Is there any way to find out?

Energyplus github issue

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answered 2018-11-28 07:06:37 -0600

Thank you for posting the EnergyPlus GitHub issue, it sounds like you have found a bug. I would suggest that you temporarily comment out the DaylightingDevice:Shelf object and the objects referenced in the inside shelf name and outside shelf name. Rerun the file and that should tell you if the rest of the geometry is ok.

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Asked: 2018-11-27 12:25:11 -0600

Seen: 28 times

Last updated: Nov 28 '18