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    <p>Michele,</p>
    <p>  Sorry for the delay in getting back to you. TRNFlow (or CONTAM,
      which I personally prefer) is the correct way to implement your
      flow controller.</p>
    <p>kind regards,</p>
    <p> David</p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 03/13/2019 12:17, Michele Vella
      wrote:<br>
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cite="mid:CANCDppyWsuXnR=h7+YvMWG3c-Fs-Huve09FbZ=hvAbbu3ekJCQ@mail.gmail.com">
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        <div dir="ltr">Dear David  
          <div>I have installed TRNFlow , im trying to do a flow
            controller using thermal airnode. Im not sure if this is the
            good method to implent it. </div>
          <div>Thanks</div>
          <div>Michele Vella</div>
        </div>
        <br>
        <div class="gmail_quote">
          <div dir="ltr" class="gmail_attr">On Mon, 4 Mar 2019 at 21:29,
            David BRADLEY <<a href="mailto:d.bradley@tess-inc.com"
              moz-do-not-send="true">d.bradley@tess-inc.com</a>>
            wrote:<br>
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              <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="gmail-m_-8596875731075046082moz-cite-prefix">On
                03/04/2019 12:50, Michele Vella via TRNSYS-users wrote:<br>
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                  <br>
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                    <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>
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                <pre class="gmail-m_-8596875731075046082moz-quote-pre">_______________________________________________
TRNSYS-users mailing list
<a class="gmail-m_-8596875731075046082moz-txt-link-abbreviated" href="mailto:TRNSYS-users@lists.onebuilding.org" target="_blank" moz-do-not-send="true">TRNSYS-users@lists.onebuilding.org</a>
<a class="gmail-m_-8596875731075046082moz-txt-link-freetext" href="http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org" target="_blank" moz-do-not-send="true">http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org</a>
</pre>
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              <pre class="gmail-m_-8596875731075046082moz-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="gmail-m_-8596875731075046082moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com" target="_blank" moz-do-not-send="true">d.bradley@tess-inc.com</a>

<a class="gmail-m_-8596875731075046082moz-txt-link-freetext" href="http://www.tess-inc.com" target="_blank" moz-do-not-send="true">http://www.tess-inc.com</a>
<a class="gmail-m_-8596875731075046082moz-txt-link-freetext" href="http://www.trnsys.com" target="_blank" moz-do-not-send="true">http://www.trnsys.com</a></pre>
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    <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>
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