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    <p>Antoine,</p>
    <p>  This is a common source of confusion. Two points are important
      to keep in mind. First, the collector array area parameter is the
      area of the entire array, not just the area of one module in the
      array. Second, if you add a second collector you have to be
      careful about what you do with the flow rate. If you are adding a
      second collector in parallel to the first one you should double
      the collector array area, leave the "number in series" parameter
      set to 1, and double the liquid flow rate to the array. If you are
      adding a second collector in series with the first one, you should
      double the collector array area, set the number in series to 2,
      and leave the liquid flow rate unchanged.</p>
    <p>kind regards,</p>
    <p> David</p>
    <p><br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 10/20/2016 11:46, Antoine Gautier
      via TRNSYS-users wrote:<br>
    </div>
    <blockquote cite="mid:000001d22af1$750bd3c0$5f237b40$@solamen.fr"
      type="cite">
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        <p class="MsoNormal"><span
            style="font-size:8.0pt;font-family:"Verdana",sans-serif">Hi<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:8.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:8.0pt;font-family:"Verdana",sans-serif"
            lang="EN-US">I cannot figure out why the number of
            collectors in series has no effect on the collectors array
            efficiency: see attached project.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:8.0pt;font-family:"Verdana",sans-serif"
            lang="EN-US">Computing equations from source code manually I
            would state the opposite…<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:8.0pt;font-family:"Verdana",sans-serif"
            lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:FR"
            lang="EN-US">Thanks for your help.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:FR"
            lang="EN-US">Best regards<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:#404040;mso-fareast-language:FR">--<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:#404040;mso-fareast-language:FR">Antoine
            Gautier<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:#404040;mso-fareast-language:FR">Solamen<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:#404040;mso-fareast-language:FR">+33
            6 58 24 02 60<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:#404040;mso-fareast-language:FR"><a class="moz-txt-link-abbreviated" href="mailto:antoine.gautier@solamen.fr">antoine.gautier@solamen.fr</a><o:p></o:p></span></p>
        <p class="MsoNormal"><o:p> </o:p></p>
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      <br>
      <pre wrap="">_______________________________________________
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</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>
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