[TRNSYS-users] How to use Window5 to create a window system with the values expected?

[David Bradley]

Yujun,
  This is a pretty common problem unfortunately. At some point you 
will have to just do the best you can. One thing that my colleagues 
and I have found helps is to get some idea of the construction of the 
window (pane thicknesses, location of films, gas gap thicknesses, 
frame descriptions, etc.). These can help guide you and get you 
pretty close to the published values. I have not had much luck using 
Optic5 to generate new windows. Where I have found Optic5 to be 
helpful is that it gives access to the IGDB (International Glazing 
Data Base); that data base expands quickly and you can often find the 
actual manufacturer and window that you are looking for, export it to 
Window5 and avoid all the problems of tuning your window to match the 
published data.
Kind regards,
  David


At 11:46 2/28/2008, Yujun TAO wrote:
>Dear users,
>Do you know how to use Window5 to create a window system with the 
>values expected?
>I want to create a window system with three values followings :
>U=2.1 W/m2.K (overall); g (Solar heat gain factor) =0.6; Visible 
>Transmission=0.7
>I can just get sometimes the values "closes", but not so close like 
>I wish. So help me if you know
>In advance Thank you for your help.
>Yujun
>
>
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Thermal Energy System Specialists (TESS), LLC
David BRADLEY                           2916 Marketplace Drive - Suite 104
Partner                                        Madison, WI 53719
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Fax: (608) 278-1475
E-mail: bradley at tess-inc.com
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