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Artemi,<br>
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 Type68 is obsolete; type67 should be used in its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. <br>
Kind regards,<br>
David<br>
<br>
<br>
On 6/19/2012 04:11, Artemi Spanaki wrote:
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Dear trnsys users<br>
<br>
how can I totally shade the surface of an element (ec roof)
using a trnsys component (probably type 67). <br>
<br>
how the "opening" in type 68 is considered to be horizontal?
should type 67 be combined to another type?<br>
<br>
ps: sorryfor double-senting the yesterday e-mail<br>
<br>
yours sincerelly<br>
<br>
<br>
a s<br>
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David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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F:+1.608.278.1475
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