<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>Michele,</p>
<p> There are two tools available for determining the quantity of
coupling airflow. One is Type97 (or Type98) (both of which are
links between TRNSYS and a freely available software tool called
CONTAM). The other is a commercially available TRNSYS add-on
called TRNFlow. The idea behind both is that the Trnsys building
thermal model (Type56) provides zone temperatures to the airflow
model (CONTAM or TRNFlow). The airflow model takes those
temperatures (as well as ambient conditions and a certain amount
of building geometry with which the thermal model is not usually
concerned) and computes the corresponding interzonal air flows.
These are passed back to Type56, which recomputes zonal
temperatures. Iteration continues until both the thermal and
airflow models agree. <br>
</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 03/04/2019 12:50, Michele Vella via
TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CANCDppyc2qdfLSnkxBWHMO1BLz0+s_3P25=CvQ8ZAu6+VCmeiw@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr"><br>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">Hi, I m designing a church
with different thermal zones and the common surfaces are set
to virtual surface. I activated the coupling . What would be
the ideal coupling air flow?<br>
</div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
TRNSYS-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:TRNSYS-users@lists.onebuilding.org">TRNSYS-users@lists.onebuilding.org</a>
<a class="moz-txt-link-freetext" href="http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org</a>
</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
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>
</body>
</html>