Window frame thermal properties

[nunomcoelho]

I would like to run energy anaylysis on my models and get results I can trust. I have looked on every reference to windows thermal properties and so far i can't answer the question: How to define the window thermal properties?

So far i think i understand that the Glazing Thermal property is for the glass. Is it correct to assume that the frame conductivity is defined in the family construction and materials of the frame?

If i want to use a thermal break frame, i should use a family that is defined as such? Is there anyway of defining a global U factor for the window?

[barthbradley]

For windows and curtain wall panels, use the Type Properties Analytic Construction dialog to define analysis properties.

In addition, in the Advanced Energy Settings dialog, select Detailed Elements.

https://knowledge.autodesk.com/support/revit-products/learn-explore/caas/CloudHelp/cloudhelp/2016/EN...

[nunomcoelho]

Thank you for your help but i don't seem to have the same Properties Dialog. The following image is from Revit 2019.

The option to enter manually the analytical data would be perfect, however, it is grayed out and the option is to edit the construction.xml file.

I have tried to change the energy settings to override the windows with schematic types, but still i dont get the same dialog as you showed.

[barthbradley]

https://knowledge.autodesk.com/support/revit-products/learn-explore/caas/CloudHelp/cloudhelp/2016/EN...

[nunomcoelho]

Footnote: the solution proposed is for Revit 2020. Only recently i have upgraded and have been able to test. On previous versions the option for user input is not available.

[barthbradley]

I'm not sure I understand what you are trying to tell me, but everything I posted above applies to all releases of Revit.  I cannot remember a version without those properties -- and I been through quite a few.  But, whatever. Sounds like you're good to go now.