OpenStudio Simulation errors

asked 2024-06-12 11:53:33 -0500

YeshanPerera's avatar

updated 2024-06-12 15:02:16 -0500


I am a novice student to OpenStudio user and this is my first project. I am currently working on an OpenStudio model and used OpenStudio SketchUp plugin (Version 1.7.0) to create the geometry. After finishing the model I saved it as .osm file and assigned all constructions, schedules and thermal zones. I made all of them by myself because this is a residential project and I could not find any presets. So, my problem is whenever I ran the simulation it always aborts and leaves these errors.

[Error 1]

Initializing workflow. Loading OSM model Successive data points (2015-Jan-31 to 2007-Feb-01, ending on line 753) are greater than 1 day apart in EPW file 'C:/Users/yesha/AppData/Local/Temp/osmodel-dbf8-6e8f-3cb7-2c1d-1718206876-0/resources/files/LKA_WP_Colombo-Bandaranaike.Intl.AP.434500_TMYx.2007-2021.epw'. Data will be treated as typical (TMY)

[Error 2]

Translating the OpenStudio Model to EnergyPlus. Beginning the translation to IDF OS_ProgramControl is not currently translated Object of type 'Schedule:Constant' and named 'Always Off Discrete', points to an object named OnOff 1 from field 1, but that object cannot be located. Object of type 'Schedule:Constant' and named 'Always On Continuous', points to an object named Fractional 1 from field 1, but that object cannot be located. Successfully translated to IDF

I tried creating the model from scratch a couple of times and checked over and over again to find any flaws and did not find any. Can someone please help me with this.

Thank you

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None of these are hard errors, and can probably be ignored. Your issue is something else. If it fails to simulate in E+, check the companion directory (if your model is named model.osm, it's a folder named model/ next to it), under run/ you'll find the eplusout.err which should tell you more about what's going on.

Julien Marrec's avatar Julien Marrec  ( 2024-06-13 02:05:38 -0500 )edit

In the OpenStudioApplication, you can access the companion directory from the "Run" Tab, there is "Show Simulation" button that will take you to it.

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Julien Marrec's avatar Julien Marrec  ( 2024-06-13 02:07:31 -0500 )edit

I checked the eplusout.err file and found one severe error;

* Severe * CheckAndSetConstructionProperties: The single-layer window construction=MODEL_CONSTRUCTION_SHADING has a gas, complex gap, shade, complex shade, screen or blind material; it should be glass of simple glazing system.

However when I completely remove the shading device; simulation completed with no errors. I need this shading device to complete my project. It is a series of vertical timber strips that covers entire windows from sunlight. I may have incorrectly put inputs here, so can you please help me solve this issue.

YeshanPerera's avatar YeshanPerera  ( 2024-06-17 01:31:51 -0500 )edit