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<span style="font-size: 10pt; font-family: Arial;">Héloïse,<br>
I don't think Type34 is going to work for non-vertical windows; it
contains an analytical solution for the view factor between a vertical
surface, the horizontal ground and a horizontal overhang. In the case
of a non horizontal overhang, we take the horizontal projection of the
overhang. That view factor calculation isn't going to be correct for a
non-vertical surface. You might consider using Type67 which allows you
to define a shading mask but that component calculates shading from the
center of glass and so ignores the effect of the window's slope.<br>
Best,<br>
David<br>
<br>
</span><br>
Heloise PELEN wrote:
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<div class="Section1">
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";">Dear
TRNSYS users,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US">I
am currently working on a project which involves non-orthogonal
windows, shaded
by horizontal overhangs. I’d like to use type 34 to model these
overhangs. My windows have different slopes, from 30° to 80° with the
horizontal
direction.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent: -18pt;"><!--[if !supportLists]--><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US"><span style="">1.<span
style="font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">
</span></span></span><!--[endif]--><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US">Type 109, from which the radiation inputs of
type 34 come, uses the slope of my tilted windows to compute the beam
radiation
and the incident angle of direct radiation on this non-orthogonal
surface. Is
it enough to tell type 34 that my windows are not orthogonal ? Indeed,
the
description of the 1<sup>st</sup> parameter of type 34 reads: “Type34
assumes a vertical orientation for the window.” The problem is that, my
window not being vertical, an overhang doesn’t have the same impact
than
if the window was vertical, since the window is closer to the sun’s
zenith
angle.<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent: -18pt;"><!--[if !supportLists]--><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US"><span style="">2.<span
style="font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">
</span></span></span><!--[endif]--><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US">What length of overhang projection and overhang
gap should I consider ? Mark Duffy’s answer on Fri Dec 11<sup>th</sup>
2009 suggests that we should take the horizontal distance for the
overhang
projection, but is this right even in this case, with a non vertical
window ? Should
I take instead the distance in the orthogonal direction from the window
to the
end of the projection ?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US">Thanks
for your help.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";">Best
regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";">Héloïse
Pelen<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span
style="font-size: 2pt; font-family: "Tahoma","sans-serif"; color: white;">ETAMINE<o:p></o:p></span></b></p>
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<p class="MsoNormal" style="text-align: center;"
align="center"><b><span
style="font-size: 8pt; font-family: "Tahoma","sans-serif"; color: rgb(0, 176, 80); text-transform: uppercase;"><img
id="Image_x0020_1" src="cid:part1.04060606.04040805@tess-inc.com"
alt="etamine_mail" height="48" width="118"></span></b><span
style="font-size: 12pt; font-family: "Times New Roman","serif"; color: black;"><o:p></o:p></span></p>
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<td style="padding: 0.75pt; width: 69.2%;" width="69%">
<p class="MsoNormal"><span
style="font-size: 8pt; font-family: "Tahoma","sans-serif"; color: black;"><a
moz-do-not-send="true" href="mailto:heloise.pelen@etamine.coop"><span
style="color: black;">heloise.pelen@etamine.coop</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 8pt; font-family: "Tahoma","sans-serif"; color: black;">75
rue de la Villette - 69003 Lyon<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 8pt; font-family: "Tahoma","sans-serif"; color: black;">Std
: 04 37 45 34 20 / Fax : 04 37 45 41 38<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 8pt; font-family: "Tahoma","sans-serif"; color: rgb(0, 176, 80);">Ld
: 04 37 45 34 13 </span><span
style="font-size: 8pt; color: rgb(0, 176, 80);"><o:p></o:p></span></p>
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width="0"><br>
</td>
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<p class="MsoNormal"><span
style="font-size: 14pt; font-family: Mistral; color: black;">Visitez
notre nouveau site web : </span><span style="color: black;"><a
moz-do-not-send="true" href="www.etamine.coop"
title="Aller sur le site de ETAMINE"><span
style="font-size: 14pt; font-family: Mistral; color: rgb(0, 176, 80);">www.etamine.coop</span></a></span><span
style="font-size: 14pt; font-family: Mistral; color: black;"> !</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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