Re: [TRNSYS-users] Convection coefficient : hOutside

[Sam Elyas <karaktus@gmail.com>]

If someone is looking for a reference : look for NBS polynomial model, for Medium smooth surfaces.

Le 08/03/2019 à 01:26, Sam Elyas a écrit :

Hi,

 

In the example about the use of type49 (TRNSYS17) I found this correlation for calculating outdoor convection coefficient :

hOutside=MAX(0.01,(8.23+4.00*WindSpeed-0.057*WindSpeed**2)*3.6)  !kJ/h.m2.K

 

Is there any reference for this formula ? Are there some other formulas to be used with WindSpeed variable ?

 

Thanks !

Sam