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As noted in TRNBuild (where you set the back side convection
coefficient), a value smaller than 0.001 is used to indicate direct
contact between a BOUNDARY wall and a temperature. A large value
(such as 999) is used with other wall categories (ADJACENT,
EXTERNAL, etc.) to indicate good thermal contact.<br>
Best,<br>
David<br>
<br>
<br>
On 4/13/2011 10:30, <a class="moz-txt-link-abbreviated" href="mailto:pseudomino@gmx.com">pseudomino@gmx.com</a> wrote:
<blockquote cite="mid:20110413153100.35610@gmx.com" type="cite"><span
style="font-family: Verdana;"><span style="font-size: 12px;">Hello,<br>
<br>
Usually, when using the assistant to create a multizone
building, the convection coefficient between the soil and the
floor is set to 999 to reproduce the absence of thermal
resistance.<br>
<br>
But when I create a file using the Trnsys3D import from
Sketchup, this same coefficient is set by default to 0,001.<br>
Why is that ?<br>
<br>
Please help me understand</span></span>
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<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>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
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