Re: [TRNSYS-users] shading an horizontal surface

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

Artemi,
  The "opening" that Type67 and 68 talk about is really just a surface on which a certain amount of solar radiation is falling; it can be a roof or a skylight, a wall, or a window. You define its orientation the way you define all orientations, with a slope and an azimuth. The slope for a horizontal surface is zero, its azimuth doesn't matter. Type68 is obsolete; type67 should be used in its place. Both calculate the reduction in beam and diffuse radiation caused by objects that surround a surface. The surrounding objects are treated as opaque and are assumed to be a known height, distance, and direction from the shaded surface.
Kind regards,
 David


On 6/19/2012 04:11, Artemi Spanaki wrote:

Dear trnsys users
 
how can I totally shade the surface of an element (ec roof) using a trnsys component (probably type 67).
 
how the "opening" in type 68 is considered to be horizontal? should type 67 be combined to another type?
 
ps: sorryfor double-senting the yesterday e-mail
 
yours sincerelly
 
 
a s

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