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    <p>Issmail,</p>
    <p>  The algorithms that Type556 used were found to be faulty. The
      component was replaced with Type952 in a later TESS Libraries
      release. The component is in the GHP library. I would, however,
      caution you about using either one of them to model an air-to-soil
      heat exchanger. They both assume that the pipes are liquid filled
      and neither one of them deals with condensation that might occur
      if they were filled with air. Instead, I would recommend that you
      look at Transsolar's Type460, which is specifically intended to
      model an air-to-soil heat exchanger.
      <a class="moz-txt-link-freetext" href="https://trnsys.de/docs/komponenten/komponenten_ts_en.htm">https://trnsys.de/docs/komponenten/komponenten_ts_en.htm</a></p>
    <p>kind regards,</p>
    <p> David</p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 03/28/2019 06:13, Issmail OUHALLOU
      via TRNSYS-users wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAA779b2-ZuCq6xWdZmxoDLEQYH6irxto-2ZErNtytcRA0okekw@mail.gmail.com">
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          style="display:flex"
src="https://mailtrack.io/trace/mail/96c391bbd0024654a949c73499ecfd585f2277a6.png?u=633613"
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          <div class="gmail_default"
            style="font-family:arial,helvetica,sans-serif;color:rgb(0,0,0)">Dear
            Tnsys users,</div>
          <div class="gmail_default"
            style="font-family:arial,helvetica,sans-serif;color:rgb(0,0,0)"><br>
          </div>
          <div class="gmail_default"
            style="font-family:arial,helvetica,sans-serif;color:rgb(0,0,0)">I
            am trying to simulate an air-to-soil heat exchanger
            (canadian well) with heat recovery system using both types
            556 and 667b located in TESS.</div>
          <div class="gmail_default"
            style="font-family:arial,helvetica,sans-serif;color:rgb(0,0,0)">I
            couldn't find the type 556 in TESS!</div>
          <div class="gmail_default"
            style="font-family:arial,helvetica,sans-serif;color:rgb(0,0,0)">Is
            it individual component? Because I couldn't find it on
            TRNSYS website either.</div>
          <div class="gmail_default"
            style="font-family:arial,helvetica,sans-serif;color:rgb(0,0,0)"><br>
          </div>
          <div class="gmail_default"
            style="font-family:arial,helvetica,sans-serif;color:rgb(0,0,0)">Thank
            you in advance!</div>
          <div class="gmail_default"
            style="font-family:arial,helvetica,sans-serif;color:rgb(0,0,0)"><br>
          </div>
          <div class="gmail_default"
            style="font-family:arial,helvetica,sans-serif;color:rgb(0,0,0)">Regards,</div>
          <div class="gmail_default"
            style="font-family:arial,helvetica,sans-serif;color:rgb(0,0,0)">Issmail</div>
        </div>
      </div>
      <br>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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</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>
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