[TRNSYS-users] Difference between Surface 1/2/3 in weather file

[David BRADLEY]

Dev,
   The orientation of the surfaces is defined by the user specifying a 
slope and azimuth among the components inputs. The component then 
calculates the amount of solar radiation falling on that surface. If the 
user defines a surface that faces the ground, there will never be any 
beam radiation incident on it. If the user defines a north facing 
vertical surface then again, there will be no beam radiation falling on 
that surface except early in the morning and late in the afternoon.

   I should also mention that Type109 is an obsolete component that was 
replaced in 2008 by Type15. It is HIGHLY recommended that you change to 
using the improved Type. If you are using the Type109 "user-defined" 
data structure then you can change to using Type99 instead of Type15.
Regards,
  David


On 4/12/2013 02:42, dev sharma wrote:
> Hey All,
>
> Can someone please tell me the difference between surfaces 1/2/3 etc,
> when I use type 109 to read weather file? I ask this because the
> radiation curves incident on these surfaces are different. For surface
> 2, the beam radiation becomes 0 during the summer months, which is
> pretty shocking.
>
> Thanks
> Dev Sharma
>

-- 
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David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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d.bradley at tess-inc.com

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