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<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hope you are very well.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m modelling a cabin in SketchUp using the TRNSYS3D plugin. In the real cabin structure, several steel posts were used to elevate the cabin and separate its floor from the ground. The air easily flows in this cavity under the cabin, see
<b>Fig. 1</b>. To model the cavity, I’ve considered a bottom zone in which the walls were defined as
<i>Massless Layers</i> with R-value of 0.044 h m^2 K/ kJ (equal to the air gap), see
<b>Fig. 2</b>.<o:p></o:p></p>
<p class="MsoNormal">However, I’m not sure if this modelling process is correct. Do we have any option in TRNSYS to consider such cavity under buildings?<o:p></o:p></p>
<p class="MsoNormal">BTW, if this model is correct, how should I calculate the infiltration rate for the cavity section? Any idea is highly appreciated.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks a lot for your help.<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><b><span lang="EN-AU" style="font-size:10.0pt;color:#002060"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="text-autospace:none"><b><span lang="EN-AU" style="font-size:10.0pt;color:#002060">Warmly,<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-autospace:none"><b><span lang="EN-AU" style="font-size:10.0pt;color:#002060">Seyedmostafa Mousavi<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-AU" style="font-size:10.0pt;color:#002060">The University of Melbourne, Victoria 3010 Australia</span><span lang="EN-AU">
</span><span lang="EN-AU" style="font-size:10.0pt;color:#002060"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><b><span lang="EN-AU" style="font-size:10.0pt;color:#002060">E:
</span></b><span lang="EN-AU" style="font-size:10.0pt;color:#002060"><a href="mailto:sm.mousavi@unimelb.edu.au"><span style="color:blue">sm.mousavi@unimelb.edu.au</span></a></span><span lang="EN-AU" style="font-size:10.0pt;color:#002060">
<o:p></o:p></span></p>
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