[TRNSYS-users] Window U value

[Monika Schulz]

Dear Amandine,
I'm not sure if you are speaking of the U-values given by window 5.2 or given by TRNSYS Type 56.
However, changing the order of the layers, in the Type 56 window model might result in different surface temperatures and therefore in different convection conditions between the panes, changig even the U-value.

Kind regards
Monika


> -----Ursprüngliche Nachricht-----
> Von: trnsys-users-bounces at engr.wisc.edu 
> [mailto:trnsys-users-bounces at engr.wisc.edu] Im Auftrag von 
> amandgal at acciona.es
> Gesendet: Montag, 5. Juni 2006 12:21
> An: trnsys-users at engr.wisc.edu
> Betreff: [TRNSYS-users] Window U value
> 
> 
> 
> 
> 
> 
> Hello,
> 
> I use Window 5.2 to create windows to introduce in TRNBUILD.
> I make some test and I don't understand why the U value of a 
> glazing change when I change the order of the layers. It is 
> obvious that the radiation coefficients change with the order 
> of the layer but the U value that, for me, is only a 
> conduction-convection variable, may not change.
> 
> If someone knows why the U value varies, please could you 
> explain to me.
> 
> Thanks
> 
> ______________________________________________________________
> ________________
> 
> Amandine Gal
> Departamento de Investigación, Desarrollo e Innovación__I+D+I 
> _____________________________________________
> Acciona Infraestructuras
> Parque Empresarial de La Moraleja
> Av. de Europa, 21
> 28108 Alcobendas (MADRID)
> _____________________
> Tel.  +34.91.663.30.96
> Fax. +34.91.663.31.88
> amandgal at acciona.es
> www.acciona-infraestructuras.com
> www.constructionrd.com
> 
> Este mensaje se dirige exclusivamente a su destinatario, y 
> puede contener información confidencial sometida a secreto 
> profesional, o cuya divulgación esté legalmente prohibida. 
> Cualquier opinión en él contenida es exclusiva de su autor y 
> no representa necesariamente la opinión de la empresa. Si ha 
> recibido este mensaje por error, le rogamos nos lo comunique 
> de forma inmediata por esta misma vía y proceda a su 
> eliminación, así como a la de cualquier documento adjunto al 
> mismo. El correo electrónico vía Internet no es seguro y no 
> se puede garantizar que no haya errores ya que puede ser 
> interceptado, modificado, perdido o destruido, o contener 
> virus. Cualquier persona que se ponga en contacto con 
> nosotros por correo electrónico se considerará que asume 
> estos riesgos.
> 
> This e-mail is addressed exclusively to the recipient and may 
> contain privileged information under a professional 
> confidential agreement or it may be against the law to 
> disclose its contents. Any opinion contained in it belongs 
> exclusively to his/her author and does not necessarily 
> reflect the company's view. If you receive this e-mail in 
> error, please let us know immediately (by return e-mail) and 
> proceed to its destruction, as well as any document attached 
> to it. The sending of e-mails through the Internet is not 
> safe and, therefore, error-free communications cannot be 
> guaranteed, as they can be intercepted, changed, misled or 
> destroyed or they might contain a virus. Any user contacting 
> us through e-mails shall be understood to be assuming these risks.
> 
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at engr.wisc.edu 
> https://www.cae.wisc.edu/mailman/listinfo/trns> ys-users
>