I'm working with a building with climate zone 3C and I'm using the measure "Create Baseline Building" that uses openstudio-standards.
According to ASHRAE 90.1, thermal properties of the window should be:
Otherwise, in the thermal properties that are considered in the simulation are:
Why are they different?
@Adrià González-Esteve, looks like you're comparing:
Yet the E+ reported Assembly U-factor and Assembly SHGC numbers (in blue) seem to match?
SHGC (25%) has remained pretty constant (at least for fixed fenestration) over several 90.1 editions for CZ < 4. They seem to match here.
Unsure which 90.1 version you're looking into (e.g. 2010?). The E+ reported Assembly U-Factor results seem to match 90.1 2016 requirements (and earlier?) for nonresidential, CZ 3C (once rounded):
Maybe double-check that you're comparing the same 90.1 versions (e.g. 2010 vs 2010, 2016 vs 2016)?
Note that E+ is listing the subsurfaces as NFRC type "curtainwall" ...
Hope this helps, Adrià.
@Denis Bourgeois the screen shot that I shared of 90.1 belongs to 2010's version and I'm using the 2010 parameter in Create Baseline Building measure.
Good to know - thanks. So linked to this issue?
Asked: Apr 25
Seen: 127 times
Last updated: Apr 25
