[Bldg-sim] Assembly SHGC

[Cheney]

When you use WINDOW to calculate total window SHGC, you will find the SHGC
will be reduced compared as the glaze one. It looks reasonable to me since
the impact of  window frame has been considered. From this point of view,
the equation is not always correct.

Cheney

On Fri, Sep 17, 2010 at 9:03 AM, D. Charlie Curcija <
curcija at designbuildersoftware.com> wrote:

>  From this formula, it can be concluded that SHGC of frame is assumed to
> be 0.57, which is high.  Very high.  However, the formula may be provided
> for default (punitive) value if it does not have NFRC rating.  This is to
> encourage people to get accurate NFRC values.
>
>
>
> Charlie
>
>
>
> *From:* bldg-sim-bounces at lists.onebuilding.org [mailto:
> bldg-sim-bounces at lists.onebuilding.org] *On Behalf Of *Jon Matthews
> *Sent:* Friday, September 17, 2010 11:36 AM
> *To:* bldg-sim at lists.onebuilding.org
> *Subject:* [Bldg-sim] Assembly SHGC
>
>
>
> Hello All! I am confused to the formula that I found recently in the
> forum on Assembly SHGC. I think its SHGCassembly = 0.08 + (0.86)(SHGCglass)
> (cant find it now in the forum but I think it is something like this) which
> gives me a higher assembly SHGC of glass. Is this correct? I thought that
> assembly SHGC will be smaller than the SHGC of glass.
>
>
>
> Thanks again to all!!
>
>
>
> Jon
>
>
>
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