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RE: [EnergyPlus_Support] Re: g-value vs. SHGC
I am not sure why you would need to dig into these NFRC/ISO documents to do simulations. SHGC is not an input to EnergyPlus. You have to specify the individual layers of glazing material and gases and EnergyPlus calculates and reports SHGC as an output (in the .eio file). The Window 5 program is a big help for input data.
-----Original Message-----
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]On Behalf Of kk080769
Sent: Thursday, April 21, 2005 1:57 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Re: g-value vs. SHGC
Hi Mahabir,
thank you for your reply!
The main problem is that the availability of ISO 15099 or the NRFC
200 for me here in Hamburg/Germany is plus/minus zero.
So I am looking for a resource which can help me...
If there is anybody who knows how to get one of these standards
through the WWW ;-)
I would be very glad.
Thank you in advance,
Konstantin
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Mahabir Bhandari"
<bhandari@f...> wrote:
> Konstantin,
>
> WINDOW 5 performs the SHGC calculations in accordance with ISO
15099 for a
> fixed set of environmental conditions and for normal incidence
radiation.
> Details you can find in the following reference:
>
> Reference:
> [ ISO 15099/FDIS : Thermal Performance of Windows, Doors and
Shading Devices
> - Detailed Calculations.\
>
>
> Mahabir
>
> Mahabir Bhandari, Ph.D.
> Senior Energy Analyst
> Carli Inc., USA
> Tel: (413) 256 4647
> Fax: (413) 256 4823
>
> -----Original Message-----
> From: kk080769 [mailto:kk080769@y...]
> Sent: Wednesday, April 20, 2005 10:47 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] g-value vs. SHGC
>
>
>
> Hello,
>
> for my master thesis I am working with a interface of E+:
> DesignBuilder.
>
> The question in the monet is how assignable usual Euro Norm Values
> are
> to e+.
>
> the usual value for solar gain in europe is the g-value according
to
> EN
> 410. E+ uses WINDOW5 for window calculation, as I got from the E+
> engineering doc. The value which is used there is the SHGC (solar
> heat
> gain coefficient) according to NRFC 200. I am not able to get
> information about the calculation procedure of the SHGC, to make
it
> comparable with the g-value, from which I know the details.
>
> Does anybody know how this SHGC is defined, or where I can get the
> information for free?
>
> Many thanks in advance,
>
> regards,
> Konstantin
> Hamburg, Germany
>
>
>
>
>
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
>
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>
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