[TRNSYS-users] Long wave emissivity of walls

Erik Olsen olsen at transsolar.com
Fri Apr 17 00:52:05 PDT 2009


Bastien / Christophe / etc.,

 

David is correct, however, TRNSYS 17 will allow a user-defined
emissivity for both external and internal walls.  TRNSYS 17 is planned
for release this September.

 

Regards,

Erik

 

 

  _____  

Von: David Bradley [mailto:bradley at tess-inc.com] 
Gesendet: Donnerstag, 16. April 2009 18:10
An: Bastien GARBAY
Cc: trnsys-users at cae.wisc.edu
Betreff: Re: [TRNSYS-users] Long wave emissivity of walls

 

Cristophe and Bastien,
 I believe that the emissivity of walls in Type56 is assumed to always
be 0.9 and that there is not a convenient way to model low emissivity
materials in TRNSYS 16.
Kind regards,
 David
 

Bastien GARBAY wrote: 

Dear Trnsys-users,

I'm trying to modelize a low emissivity material to evaluate its impact
on summer confort of buildings. Can I change the long wave emissivity of
the outside surfaces of walls? I read in the User Guide the default
value of emissivity is 0.9 for any walls.

Has anyone ever tried to modelize this kind of "reflecting" material?

Thanks a lot for your help,

Best regards,

Bastien Garbay

Cabinet SIDLER / ENERTECH
Quartier Bourgounion
F-26160 FELINES SUR RIMANDOULE
tel-fax : +33 (0)4 75 90 18 54
Courriel : garbay at enertech.fr
Site : www.enertech.fr

 

 

 



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