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Hi,

I am exploring a workflow that involves exporting a gbXML file from a Revit model and converting the gbMXL file to an IDF file via OpenSudio. I encounter an empty required field problem that cause errors when running an EmergyPlus simulation using the converted IDF file.

I came across a forum post related to this problem and tried to follow the discussion; however, I still cannot find a solution. Here is the post: https://unmethours.com/question/16600/problems-between-revit-and-openstudio. In the discussion, I acknowledge that it's a known bug and has been solved in the late versions on OpenStudio. Furthermore, the conversation seems to focus on window problems. I basically encounter problems with the building shells (e.g., floors, wall, and roof), as well.

Regarding my workflow, I installed OpenStudio 1.11.5 which exports EnergyPlus 8.5. I imported a gbXML file via the OpenStudio extension installed inside SketchUp 2016. I exported an IDF file. I examined the IDF file via a text editing tool and found that the values for the 'Construction Name' fields are empty (please see an example below), which causes errors when running the simulation.

BuildingSurface:Detailed,
  aim0149,                                !- Name
  Wall,                                   !- Surface Type
  ,                                       !- Construction Name
  aim0024 ThermalZone,                    !- Zone Name
...

Could anyone please share your insights regarding how to overcome this issue? I am very open to less-manual-editing ideas whether the issue should be solved in Revit, SketchUp, OpenStudio, IDFEditor, or other third-party software.

Thank you very much.

Hi,

I am exploring a workflow that involves exporting a gbXML file from a Revit model and converting the gbMXL file to an IDF file via OpenSudio. I encounter an empty required field problem that cause errors when running an EmergyPlus simulation using the converted IDF file.

I came across a forum post related to this problem and tried to follow the discussion; however, I still cannot find a solution. Here is the post: https://unmethours.com/question/16600/problems-between-revit-and-openstudio. In the discussion, I acknowledge that it's a known bug and has been solved in the late versions on OpenStudio. Furthermore, the conversation seems to focus on window problems. I basically encounter problems with the building shells (e.g., floors, wall, and roof), as well.

Regarding my workflow, I installed OpenStudio 1.11.5 which exports EnergyPlus 8.5. I imported a gbXML file via the OpenStudio extension installed inside SketchUp 2016. I exported an IDF file. I examined the IDF file via a text editing tool and found that the values for the 'Construction Name' fields are empty (please see an example below), which causes errors when running the simulation.

BuildingSurface:Detailed,
  aim0149,                                !- Name
  Wall,                                   !- Surface Type
  ,                                       !- Construction Name
  aim0024 ThermalZone,                    !- Zone Name
...

Could anyone please share your insights regarding how to overcome this issue? I am very open to less-manual-editing ideas whether the issue should be solved in Revit, SketchUp, OpenStudio, IDFEditor, or other third-party software.

Thank you very much.