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To piggy back and Andrew's option 2, OpenStudio has a separate surface type for operable vs. fixed windows. This was done primarily so each window type can take unique default construction, but doesn't otherwise change what happens in EnergyPlus. Both fixed and operable windows are translated as sub-surfaces. I have often thought that an OpenStudo E+ measure that would use the operable tag to create the WindandStackOpenArea objects for you at runtime. This way there is a dynamic link between your geometry and the inputs to the WindandStackOpenArea object.

David

To piggy back and Andrew's option 2, OpenStudio has a separate surface type for operable vs. fixed windows. This was done primarily so each window type can take unique default construction, but doesn't otherwise change what happens in EnergyPlus. Both fixed and operable windows are translated as sub-surfaces. I have often thought that an OpenStudo E+ measure that would use the operable tag to create the WindandStackOpenArea objects for you at runtime. This way there is a dynamic link between your geometry and the inputs to the WindandStackOpenArea object.

David