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<p>Eunice,</p>
<p> Yes, you are correct about the way to deal with the non existent
"ceiling" between the first and second floors of the atrium.
Designate them as virtual surfaces and then in TRNBuild you'll add
the two air nodes together (atrium_1 and atrium_2) into a single
radiation zone.</p>
<p> For the pyramid structure of the building, you'll need to draw a
line in SketchUp/Trnsys3D that separates the horizontal surface at
the top of the first floor into the portion that is a ceiling (and
is adjacent to the second floor) and the part that is a roof (and
does not share any adjacencies.)</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 08/14/2017 04:22, Eunice Herrera via
TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CALB1rb-b+jAw4ksce3Bv21F6k8GqyjOOtSmttTY_VjRxZY-Y_A@mail.gmail.com">
<div dir="ltr">
<p class="MsoNormal" style="text-align:justify"><span
style="font-family:Cambria,serif" lang="EN-GB">Dear Trnsys
users,<span></span></span></p>
<p class="MsoNormal" style="text-align:justify"><span
style="font-family:Cambria,serif" lang="EN-GB"><span> </span></span></p>
<p class="MsoNormal" style="text-align:justify"><span
style="font-family:Cambria,serif" lang="EN-GB">I am trying
to model
a two level building with an open space (atrium) in the
center using the
Sketchup plugin TRNSYS3D. The level 1 has a surface of 1600
m2, level two
1225m2 and the open space in the center is 125m2. Both
levels have a height of
4m. The building has a pyramidal structure.<span></span></span></p>
<p class="MsoNormal" style="text-align:justify"><span
style="font-family:Cambria,serif" lang="EN-GB">For my
purpose, first
I have drawn two rectangular prisms (each one in one zone)
sharing ceiling and
floor as adjacent surfaces. Now I need to include the open
space. My idea is to
draw a 2D rectangle surface in both ceiling (level 1) and
floor (level 2 ) and classify
these 2D rectangles as virtual surfaces with adjacencies. As
a result, </span><span
style="font-family:Cambria,serif;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"
lang="EN-GB">I will have two zones, each one
including a rectangular prism with a virtual surface in the
center.</span><span style="font-family:Cambria,serif"
lang="EN-GB"> In this the correct
way to do it?<span></span></span></p>
<p class="MsoNormal" style="text-align:justify"><span
style="font-family:Cambria,serif" lang="EN-GB">Another
question, The
ceiling (or roof) in level 1 must be classified as ceiling
or roof (a part of
its surface is exposed to outdoors and not sharing any
adjacencies with the
floor in level 2 due to the pyramidal structure)?<span></span></span></p>
<p class="MsoNormal" style="text-align:justify"><span
style="font-family:Cambria,serif" lang="EN-GB"><span> </span></span></p>
<p class="MsoNormal" style="text-align:justify"><span
style="font-family:Cambria,serif" lang="EN-GB">I really
appreciate
your help.<span></span></span></p>
<p class="MsoNormal" style="text-align:justify"><span
style="font-family:Cambria,serif" lang="EN-GB"><span> </span></span></p>
<p class="MsoNormal">
</p>
<p class="MsoNormal" style="text-align:justify"><span
style="font-family:Cambria,serif" lang="EN-GB">Eunice
Herrera<span></span></span></p>
</div>
<br>
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<br>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
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