Hi Everyone, Recently, I had to run a daylight analysis for exterior areas and i was able to run the simulation perfectly fine and get the results. So, i started wondering why we need to create analysis models at all. While working on live projects, this step (creating analysis models) always beco…

:point_up_2: What Mostapha said. If the HB Validate Model component or the PO_ValidateModel command is telling you the Model is valid, then you can assume that’s the case. So you don’t need Rooms for a valid model. Granted, a Model without Rooms is not simulate-able in EnergyPlus and there can so…

update: we dont even need a random room to create a valid HBJSON model. Just a bunch of shade geometries creates a model and the simulation is run successfully. [image] Results [image] This workflow can really be beneficial for our team. Please advice on the validity of running daylight simula…

Hey @anujm1ttal , I think I’m missing your point - I haven’t opened the script but both models look legitimate to me, and the results from each reflect how they’re set up with the glazed version giving lower values. I think what you’re showing is intended functionality unless I’ve missed the point. …

Hi @anujm1ttal , You can use rooms in a daylight simulation but they are not required. Both models are valid but the model without a room cannot be used for energy simulations.

Thanks for the quick feedback @chris @mostapha @charlie.brooker I understand that you need Honeybee Rooms for energy simulations. But coming back to daylight simulation with radiance, what I understand from Chris’s comment is that for daylight simulations, since we have reflectance from ceilings, …

Hi @anujm1ttal , [image] anujm1ttal: … we should still work with creating rooms when probably the project is a bit more developed and we are thinking about materiality and reflectance values. It is still not necessary to use a room-based model at this stage. However, you can set up the defaul…

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Is there a need of creating Analysis Model for Daylight Analysis?

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