Re: [TRNSYS-users] Pergola as Shading mask

[David Bradley <bradley@tess-inc.com>]

Murielle,
  You are correct that when calculating the shaded radiation falling
on a facade, Type34 assumes that the overhang and wing walls are opaque.
However, Type34 also outputs the fraction of the facade that is shaded
and the fraction that is unshaded. If you were able to define a
translucence for the pergola (in other words the pergola doesn't fully
block the sun but only some part of it. The translucence would be a
measure of the fraction of sunlight that is allowed through either when
vegetated or unvegetated.) then I think you could use the Type34 shading
fractions, adjusted for a translucent overhang.
Kind regards,
 David


At 09:58 2/28/2008, Murielle Douté wrote:

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Dear trnsys users,
 
I?d like to modelize the effect of a pergola, with or without vegetation, on a window.
It doesn?t seems to be possible with ?Type 34?.
Does anyone has an idea about that?
 
Best regards,
 
Murielle Douté
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