[Bldg-sim] window opinions?

[Dahlstrom, Aaron]

Folks:

A quick survey:

Are people using the NRFC standard rating conditions (including standard window unit sizes per http://www.nfrc.org/documents/1997_NFRC100.pdf Table 1 p15) for assembly u-factors for windows in the Proposed Case?

I know the ASHRAE 5.8.2.4 references the NRFC 100 test, but I'm debating whether I should request custom calculations for my project's windows at their actual size, or accept manufacturer's standard literature based on the NRFC 100 rating sizes.

I know I can explicitly define the frame and glazing, which I prefer to do, but sometimes it isn't an option.

Thanks,

Aaron Dahlstrom , PE, LEED(r) AP
In Posse - A subsidiary of AKF| 1500 Walnut Street, Suite 1414, Philadelphia, PA 19102
d: 215-282-6753| m: 267-507-5470| In Posse: 215-282-6800| AKF: 215-735-7290
e: ADahlstrom at in-posse.com | in posse web: www.in-posse.com<http://www.in-posse.com/> | akf web: www.akfgroup.com<http://www.akfgroup.com/>





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