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<p>The principals of those parameters are always the same regardless
of what category surface you are dealing with. I would highly
recommend that you refer to the TRNBuild/Type56 manual in order to
understand them fully.</p>
<p>"geosurf" has to do with the way that beam solar radiation is
apportioned to the surfaces of the zone/airnode.</p>
<p>" surf. gain inside" is a simplified way of simulating a
radiantly heated or cooled surface.</p>
<p>"coupling air flow" and "coupling rel. hum." have to do with the
conditions (temperature, humidity, and flow rate of air that may
be passing through the surface). For a ground floor, there
probably would not be air coming through the surface.</p>
<p>"boundary condition" is a switch that allows you to either set a
boundary condition (such as the ground/floor interface
temperature) or to tell Type56 that the conditions on the back
side of the boundary is the same as the conditions on the font
side (i.e. that there is an adiabatic surface in the
wall/floor/ceiling.<br>
</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 07/14/2022 22:36, H via TRNSYS-users
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:6b851621.2b8a.181ffedfdd3.Coremail.pdhvac@126.com">
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<div style="margin: 0px; word-break: break-word !important;">Dear
all, </div>
<div style="margin: 0px; word-break: break-word !important;">
I have a question. When I set 1st gournd floor, what
category should I set ( external or boundry) and then what
should I set these parameters ？</div>
<div style="margin: 0px; word-break: break-word !important;"><img
src="cid:part1.W6gAmmk7.VQ24vWVM@tess-inc.com"
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style="width: 677px; height: 387px; border: none;"
class=""><img
src="cid:part2.Ruk05jj1.cHforj4b@tess-inc.com"
orgwidth="512" orgheight="407" data-image="1"
style="width: 512px; height: 407px;" class=""></div>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy System Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI 53703 USA
P:+1.608.274.2577
<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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