Hello DIVA team.

I am trying out a thermal analysis of my model, but I keep getting an error saying that "EnergyPlus simulation failed for some reason" and I can't figure out what the .err file i telling me.

I have made sure that the most common things are proper set in the model such as:

1) All geometry in the thermal layers are planar (simple model of the advanced model).

2) All planar surfaces are pointing outward with the dir-command.

3) The window planes is on the facade plane but no holes has been cut for the windows.

4) The DIVA Thermal geometry has been assigned to the sublayers. Ceiling and floor are set to adiabatic as I am simulating an office with other offices as neighbours (over, under, and to the sides).

5) Every DIVA Thermal geometry has been assigned a thermal material.

6) My version is the correct, I can tell from IDD_Version 7.2.0.006.

7) I ran a climate based grid analysis with the normal building geometry turned on. It wouldn't export anything when it was off, which makes sense since the default layer and the DIVA Thermal layers aren't exported. When I run a thermal analysis, I turn this geometry off again so the only layers on are the DIVA Thermal layers.

8) I changed the air change per hour from 0,5 to 0.5. I think that may be a bug you haven't fixed.

9) I have tried to both using conceptual shading to get a shading schedule and not using it with the same error.

The .err file is saying:

Program Version,EnergyPlus-Windows-OMP-32 7.2.0.006, YMD=2015.05.07 15:36,IDD_Version 7.2.0.006
** Severe ** GetSurfaceData: Some Outward Facing angles of subsurfaces differ significantly from base surface.
** ~~~ ** ...use Output:Diagnostics,DisplayExtraWarnings; to show more details on individual surfaces.
** Warning ** CheckUsedConstructions: There are 25 nominally unused constructions in input.
** ~~~ ** For explicit details on each unused construction, use Output:Diagnostics,DisplayExtraWarnings;
************* Testing Individual Branch Integrity
************* All Branches passed integrity testing
************* Testing Individual Supply Air Path Integrity
************* All Supply Air Paths passed integrity testing
************* Testing Individual Return Air Path Integrity
************* All Return Air Paths passed integrity testing
************* No node connection errors were found.
************* Beginning Simulation
************* Simulation Error Summary *************
************* There are 1 unused schedules in input.
************* Use Output:Diagnostics,DisplayUnusedSchedules; to see them.
*************
************* ===== Final Error Summary =====
************* The following error categories occurred. Consider correcting or noting.
************* Nominally Unused Constructions
************* ..The nominally unused constructions warning is provided to alert you to potential conditions that can cause
************* ..extra time during simulation. Each construction is calculated by the algorithm indicated in the HeatBalanceAlgorithm
************* ..object. You may remove the constructions indicated (when you use the DisplayExtraWarnings option).
*************
************* EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.
************* EnergyPlus Sizing Error Summary. During Sizing: 0 Warning; 0 Severe Errors.
************* EnergyPlus Completed Successfully-- 1 Warning; 1 Severe Errors; Elapsed Time=00hr 00min 6.62sec

Through my troubleshooting i have reduced the error message to this:

** Severe ** GetSurfaceData: Some Outward Facing angles of subsurfaces differ significantly from base surface.
** ~~~ ** ...use Output:Diagnostics,DisplayExtraWarnings; to show more details on individual surfaces.
** Warning ** CheckUsedConstructions: There are 25 nominally unused constructions in input.
** ~~~ ** For explicit details on each unused construction, use Output:Diagnostics,DisplayExtraWarnings;

I don't know how to solve this. It would seem like there is some of the geomtery from the other layers (turned off) which causes problems, but I am not sure. I don't know where to write the diagnostics code it suggests.

I hope you can help me.

Thanks for your time.

Regards

Mads

Tags: .err, CheckUsedConstructions, Energy, GetSurfaceData, Plus, error, fail, failed, problem, severe, More…simulation, warning

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Hi Mads,

Can you share your model here?

Thanks,

Alstan

Hello.

I have sent it to your mail, because it is to large to upload here. Hope that is OK.

Regards

Mads

Hello again.

Did my mail with the model as an attacment make it through to you?

Also, I have have an additional question.

If you chose multiple sensor points, is DIVA calculating an average value or is it just the first sensor point to cross the threshold that regulates the dynamic shading?

Thank you for your time.

Regards

Mads

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