[Bldg-sim] window opinions?

[Aleka Pappas]

WINDOW5/6 is pretty easy to learn if you understand window systems.  
This is the same tool NFRC raters use - you can use it to get whole 
window U-factor and SHGC if you're not able to model the glass & frame 
explicitly in the whole building simulation tool you're using.  Also, 
modeling the actual window size in WINDOW is more accurate than assuming 
NFRC standard sizes, and is often a significant difference.
It'll take you 15 minutes after you get the hang of it.

http://windows.lbl.gov/software/window/6/index.html

*Aleka Pappas, P.E., LEED AP*
Building Energy Engineer***
GROUP14 ENGINEERING, INC. *
1325 E. 16th Ave, Denver, CO 80218
Office: 303.861.2070 - Direct: 720.221.1082 - Cell: 720.635.0281
<mailto:swagner at group14eng.com>

On 12/16/2011 7:56 AM, Dahlstrom, Aaron wrote:
>
> 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® AP*
>
> *In P**o**sse*-- 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 
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> <http://www.akfgroup.com/>
>
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