Hi
I am quite new to Openstudio, and just started using v1.9. I realize there is a known issue with BCL, and materials or constructions downloaded from the BCL do not load into OS.
Is there a way to create a glazing type (with specific aluminium framing, double glazing, coating, gas fill etc) of specific SHGC, R-value etc from scratch?
Please help.
Yes, you can create some fenestration materials/constructions with the OpenStudio Application (App). Yet not every EnergyPlus option is available through the App.
The most basic is the Simple Glazing System Window Material (requires rated U, SHGC & VT) - look up the "Materials" subtab under the "Constructions" tab:
At the opposite end, EnergyPlus can import LBNL Window data for a specific fenestration product. See here, and/or look up "5.4 Getting data from WINDOW program" here. I don't believe this is supported in the App, but it is mapped to the SDK behind the scenes, e.g.:
OS:Construction:WindowDataFile,
{90d22889-50da-4091-8355-fa2ff516e4e6}, !- Handle
Construction Window Data File 1; !- Name
It's very basic - something you could copy/paste in a saved OSM file (before reopening using the App).
You can also look up Frame and Dividers (see here).
... it really depends on what you're after, and what inputs you have on hand.
Thank you! It seems like this is the only proper way to model glazing, as individually assembling glass, infill gas, alumi frame etc will not take into account parameters such as center/ edge U-values, thermally broken frame, frame to glass ratio (e.g. how many meters of mullions are in a given area of glazing) etc.
Glad it helped. Indeed, the Simple Glazing System Window Material/Construction approach is often a (very useful) last resort, as we don't necessarily have access to detailed framing specs. That said, the LBNL Window links above show how to generate, extract and deploy frame and divider inputs when dealing with more complete, multilayered fenestration constructions in EnergyPlus. The latter approach remains the industry standard, and I believe adresses the concerns you're raising.
Asked: 2025-04-19 20:38:11 -0500
Seen: 1,119 times
Last updated: Apr 24
