Re: [EnergyPlus_Support] Calculate window

[Rob Hitchcock <RJHitchcock@xxxxxxx>]

The intent of the WINDOW5 input method is to allow WINDOW5 users easier 
input to EnergyPlus of the host of glazing and window systems that can 
be created within WINDOW5.  The IDF input methods are not necessarily 
generic.  Users can input full spectral data for each glass layer in a 
glazing system, and detailed frame and divider data as well, and 
EnergyPlus will use embedded WINDOW algorithms in its internal calculations.

Some of the differences we're seeing are due to the fact that WINDOW5 
and EnergyPlus use different spectral weighting data sets.  But there 
are other issues as well that impact the WINDOW5 input method, which is 
what we are working to correct.

Rob

Edward G. Lyon wrote:

> I'm not sure what the specific differences are in this case, but I 
> would expect differences in the output results between the IDF and 
> WINDOW5 inputs. I thought that the original point of using WINDOW5 
> inputs was to bring the more detailed analysis of window performance 
> to the energy model rather than using the generic IDF model...
>
> Ned Lyon
> Staff Consultant
> SIMPSON GUMPERTZ & HEGER
> 781.907.9000 main
> 781.907.9350 direct
> 781.907.9009 fax
> www.sgh.com
>
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx 
> <mailto:EnergyPlus_Support%40yahoogroups.com> 
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx 
> <mailto:EnergyPlus_Support%40yahoogroups.com>] On Behalf Of Rob Hitchcock
> Sent: Wednesday, April 30, 2008 1:14 PM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx 
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> Subject: Re: [EnergyPlus_Support] Calculate window
>
> We are working to correct differences between window systems imported
> from WINDOW5 and input directly through the EnergyPlus IDF. For the
> present, I would favor the results from direct IDF input.
>
> Rob
> ========
> claraspitz wrote:
>
> > Hi,
> >
> > I have done two simulation with the same property of the window but in
> > the first case I use CONSTRUCTION FROM WINDOW 5 DATA FILE and in the
> > second case I use MATERIAL WINDOW GLASS, MATERIAL WINDOW GAS and
> > WINDOW FRAME AND DIVIDER.
> > I use the same data in the two case.
> >
> > The problem is I don't get the same result. I don't understand.
> >
> > I'm a little bit confused. Can you give me some guidance help ?
> >
> > Thanks
> >
> > Clara
> >
> >
> >
>
> --
>
> Robert J. Hitchcock, Ph.D.
> Lawrence Berkeley National Laboratory
> 1 Cyclotron Road, Mailstop 90-3111
> Berkeley, CA 94720
>
> RJHitchcock@xxxxxxx 
> <mailto:RJHitchcock%40lbl.gov><mailto:RJHitchcock%40lbl.gov>
> 530.295.9433 (telecommute office)
>
> [Non-text portions of this message have been removed]
>
> [Non-text portions of this message have been removed]
>
>  




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