Unmet Hours

answered 2023-07-06 22:46:15 -0600

updated 2023-07-07 11:27:55 -0600

It is not possible to bring a model from the OpenStudio app into BEopt. The OpenStudio app is a general-purpose application that closely mirrors the EnergyPlus inputs and helps you create a single model in great detail. BEopt, on the other hand, is very tailored towards modeling residential buildings using higher-level geometry and other inputs, and helps compare many different design alternatives.

The only connection that exists is that you could technically import any of the BEopt design alternatives into the OpenStudio application, because BEopt creates OpenStudio models behind the scenes as part of running EnergyPlus simulations.

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@shorowit Is there documentation on the method to export/import BEopt into OpenStudio? Is there a recommended workflow for this approach? Is there any data loss?

muhl ( 2023-07-25 10:35:38 -0600 )edit

BEopt does not by default create the *.osm file but you could change args['debug'] = debug to args['debug'] = true on line 66 of C:\Program Files (x86)\NREL\BEopt_3.0.1\Workflow\run_simulation.rb to get it. If there is interest from users, we could consider a BEopt setting in the future to allow the OSM to be generated.

shorowit ( 2023-07-25 16:19:35 -0600 )edit

Is this a methodology that would allow the OSM to be generated and calibrated to be compliant with BPI-2400?

muhl ( 2023-07-27 15:42:50 -0600 )edit

@shorowit - When I do this it produces the OSM but when I load it into OpenStudio 3.7 the geometry is exploded - windows, walls, etc. are not in contact with the floorspaces that are present.

Mcheunn ( 2024-06-13 11:18:02 -0600 )edit

That's correct, 3D geometry from BEopt v3 is not currently preserved in the OpenStudio model. BEopt uses OpenStudio-HPXML to produce the model, and the OpenStudio-HPXML project has some documentation regarding geometry here.

shorowit ( 2024-06-13 12:07:15 -0600 )edit

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