[TRNSYS-users] u-value of a wall : which Ntype?

David Bradley bradley at tess-inc.com
Mon Dec 1 14:19:59 PST 2008


Eleni,
 It is not exactly correct because it is not time dependent and uses 
default interior and exterior convective coefficients but I usually use 
the u-value shown in the *.inf file as my reported u-value for walls. I 
do not think that there is a special ntype for the u-value of walls. 
Please someone correct me if I am wrong about that!!

 As for NTYPE86, it is the equivalent thermal resistance (r-value) 
between a given (user specified) surface and the star-node (for 
radiation exchange calculations).

Kind regards,
 David


eleni ampatzi wrote:
> Dear All,
>
> Which is the correct Ntype for the u-value of a wall? What is Ntype 
> 86? It is not explained in the manual. Thank you in advance
>
> Best Regards
>
> Eleni
>
> -- 
> Eleni Ampatzi
> PhD Candidate
> Welsh School of Architecture
> Cardiff University
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>
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