<html>
  <head>
    <meta content="text/html; charset=windows-1252"
      http-equiv="Content-Type">
  </head>
  <body bgcolor="#FFFFFF" text="#000000">
    Souha,<br>
      I would recommend that you implement both of the cooling towers
    with a controlled diverter valve just upstream of them. There are a
    number of controller models that you could then implement to watch
    the the ambient temperature and change the setting on the controlled
    diverter valve so that your water flow would go to one tower or the
    other depending on the ambient temperature. You would then need to
    implement a mixing valve downstream of the towers so that the water
    flow would return to its load from whichever tower it passed
    through. <br>
    kind regards,<br>
     David<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 5/6/2015 4:51 AM, Souha Ferchichi
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAEtLH_OO4w2AOaztHc=dV+ThxbnTaGx=MxuPo+pFrhJR7AMO6g@mail.gmail.com"
      type="cite">
      <div dir="ltr">Good Morning,
        <div>How can i simulate a dry cooling tower with spray system
          that works under these specific conditions : </div>
        <div>If Dry bulb temp <= Tc ( constant temperature ) then dry
          cooling tower</div>
        <div>Otherwise i go with dry cooling + spray system .</div>
        <div><br>
        </div>
        <div>Thank you in advance </div>
        <div>Kind regards</div>
        <div><br>
        </div>
        <div>Souha Ferchichi </div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <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>
    <br>
    <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>
  </body>
</html>