[Equest-users] replacement windows

[Carol Gardner]

Hi Ben,

How about using the WIN program,  see LBNL website. You can create the exact
window you want and then use the import function in eQUEST to bring the data
in.

Carol

On Tue, Aug 24, 2010 at 8:47 AM, Ben Pressman <bpressman at practicalenergy.net
> wrote:

>  I am trying to replace a single-pane, clear glass window with an aluminum
> frame, no thermal break with a double-paned, argon-filled, low-e, tinted
> window with a thermal break in a parametric run. When I enter in ASHRAE 90.1
> U-factor and SHGC for the new window, the resulting energy savings is
> significantly less than expected by a quick manual estimation. I suspect
> that I am confusing NFRC U-factor for center-glass U-factor given in the
> DOE2 glass library. I know the NFRC U-factor I want to use which accounts
> for the type of glass and the frame type. In eQuest, however, it appears
> that the glass and frame conductances must be entered separately. Is there a
> way to enter the NFRC U-factor instead or determine from the NFRC U-factor
> what the frame conductance should be? Has anyone had similar problems?
>
>
>
> Thanks,
>
> Ben
>
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-- 
Carol Gardner PE
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