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Re: [EnergyPlus_Support] Error and crash in this .idf


Marco,

The error seems to be in the BuildingSurface:Detailed P4:P4%A12ZN6U_ROOF_6_0_0 Outside Boundary Condition being OtherSideConditionsModel.  This is typically used if the surface has a transpired collector or vented PV panel.  Changing the Outside Boundary Condition to Outside would correct it but I don't know the details of the surface or model.  For detailed documentation regarding the AirFlowNetwork, you can use the following link: <http://bigladdersoftware.com/epx/docs/8-1/input-output-reference/page-029.html>http://bigladdersoftware.com/epx/docs/8-1/input-output-reference/page-029.html. ; This is the HTML version of the E+ documentation which makes it easier to browse and search.  I too unfortunately am not familiar with the DesignBuilder way of modeling.

Matthew Larson

Big Ladder Software
2549 Irving Street
Denver, CO 80211
<http://bigladdersoftware.com>http://bigladdersoftware.com



On Tue, Mar 11, 2014 at 1:31 PM, Marco Aldegheri <<mailto:m.aldegheri@xxxxxxxxx>m.aldegheri@xxxxxxxxx> wrote:
>  
> Thanks for the reply.
> Maybe my inexperience makes me uneasy... I checked the surface in the buildingsurface:detailed list and it is correcly matched with the external boundary conditions (cavity)... In addition to this i don't know where to check and in particular how to check. I created the model in designbuilder and the surface is parto of a common slope roof...
> 
> Any suggestion?
> 
> 
> On Tuesday, March 11, 2014 8:00 PM, Edward G. Lyon <<mailto:eglyon@xxxxxxx>eglyon@xxxxxxx> wrote:
>  
The error message seems reasonably clear, E+ doesn?t think this surface has air around it.  Make sure the surface description calls this a roof and not a floor and that it is exposed to the outside.  Check the orientation, although that typically generates other warnings.

Also check your other airflownetwork objects, you need a control, a crack type, and an outside surface.  E+ will sometimes generate error messages when related objects are missing or incorrectly specified.

Ned Lyon, P.E. (MA, WV)
> Staff Consultant
SIMPSON GUMPERTZ & HEGER
> <tel:781.907.9000>> 781.907.9000 main
> <tel:781.907.9350>> 781.907.9350 direct 
> <tel:617.285.2162>> 617.285.2162 mobile 
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> <http://www.sgh.com>> www.sgh.com

From: <mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:<mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of <mailto:m.aldegheri@xxxxxxxxx>m.aldegheri@xxxxxxxxx
> Sent: Tuesday, March 11, 2014 2:20 PM
> To: <mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] Error and crash in this .idf


Dear friends,
> 
> I don't know why but after adding a vented roof in this .idf (which worked without problems) Energy plus crashes during a run and the error log shows this:
>    ** Severe  ** GetAirflowNetworkInput: AirflowNetwork:MultiZone:Surface: Invalid Surface Name = P4:P4%A12ZN6U_ROOF_6_0_0
>    **   ~~~   ** This type of surface (has ground, etc exposure) cannot be used in the AiflowNetwork model.
> 
> I tried to check but I don't understand how to fix this error... It seems to be all right...
> Moreover, I had problems uploading the idf so the only way is to download it from the link below.... Excuse me for that...
> <http://www.speedyshare.com/dPj34/Modello-ITEA-10-03.idf>> http://www.speedyshare.com/dPj34/Modello-ITEA-10-03.idf (click on the big title up)
> 
> Best regards,
> Marco
> 
> 




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