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    <p>Amirreza,</p>
    <p>  Often times in situations like this you need to add internal
      controls to the piece of equipment that is being controlled. The
      cooling coil model in the TESS HVAC Library, some of the solar
      collectors in the TESS Solar library, and the detailed cooling
      tower model in the standard v18 library are all examples if you
      want to look at some code. You'd need to program an internal
      iterative scheme into the evaporative cooler that is designed to
      find the flow rate that results in the outlet air temperature that
      you are looking for.</p>
    <p>kind regards,</p>
    <p> David</p>
    <p><br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 06/12/2017 05:28, Amirreza Heidary
      via TRNSYS-users wrote:<br>
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    <blockquote type="cite"
cite="mid:CAMtrc5QE8GJELYAAJ=e5-HGws1o8wfP5ECeUb2pzAx645cUH+Q@mail.gmail.com">
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          moz-do-not-send="true" height="0" width="0">Dear All
        <div>I have two air streams in my model, each of them passing
          from some components like evaporatuive cooler.One of them is
          cold air, and the other is humid. I want to condense the
          moisture content of one of them using another but in some
          hours the dew point of moist air is higher then the cold air
          temperature so the moisture could not be condensed. Tthe
          humidity of moist air is dependent to the it's flow rate, so
          if I could adjust the flow rate such as the moist air dew
          point could be maintained lower than the coild air temperature
          at each hour, we could produce significant water. Is there any
          way in TRNSYS to control the air flow rate such as the moist
          air dew point maintains lower than the cold air temperature? </div>
        <div>Thank you<br clear="all">
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      <pre wrap="">_______________________________________________
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    <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>
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