[TRNSYS-users] U values

[Angel Carrera]

Hi,

this depends on the specific type (not sure if you refer a pipe or what,
and if so, which model), and often can be find in the mathematical
description of the type. Regards

Angel

El jue., 3 oct. 2019 16:07, Arne Hübner via TRNSYS-users <
trnsys-users at lists.onebuilding.org> escribió:

> Hello TRNSYS-Users,
>
> does anybody know, how TRNSYS calculates the U-values? Cause when I
> calculate the U-values by Hand with that Formula:
>
>
>
> U = 1/(Rsi+d/Lambda+Rse)
>
>
>
> Rsi,horizontal = 0,13 m²*K/W
>
> Rse,horizontal = 0,04 m²*K/W
>
>
>
> I get different U-values.
>
> Which heat Transfer coefficients does TRNSYS use?
>
>
>
> Kind regards,
>
>
>
> Arne Hübner
>
>
>
>
>
> Gesendet von Mail <https://go.microsoft.com/fwlink/?LinkId=550986> für
> Windows 10
>
>
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