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    Karol,<br>
      I would use the active layer in Type56 to model the radiant floor
    option. Type1231 is intended to model low-temperature hydronic
    heat-distributing units such as radiators, convectors, and baseboard
    and finned-tube units. There is guidance in the documentation on how
    to choose values of the parameters. While your radiator doesn't have
    tubes exactly, I would treat the vertical flow channels as pipes and
    use an approximate diameter (or more ideally, the hydraulic diameter
    of the flow channel)<br>
    Kind regards,<br>
     David<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 11/8/2012 12:08, Karol Bandurski
      wrote:<br>
    </div>
    <blockquote cite="mid:000001cdbddc$0b3993f0$21acbbd0$@put.poznan.pl"
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        <p class="MsoNormal">Dear all,<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">I would like to compare energy demand for
          dwelling with floor heating vs. with radiators.<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">So I have following issue:<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoListParagraph"
          style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
            style="mso-list:Ignore">1)<span style="font:7.0pt
              "Times New Roman"">      </span></span><!--[endif]-->FLOOR/RADIANT
          HEATING: what is the best (easy and accurate) way to model
          this installation (in context of my goal), which solution is
          better:<o:p></o:p></p>
        <p class="MsoListParagraph"
          style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0
          level2 lfo1"><!--[if !supportLists]--><span
            style="mso-list:Ignore">a.<span style="font:7.0pt
              "Times New Roman"">       </span></span><!--[endif]-->Active
          Layer in TRNBuild,<o:p></o:p></p>
        <p class="MsoListParagraph"
          style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0
          level2 lfo1"><!--[if !supportLists]--><span
            style="mso-list:Ignore">b.<span style="font:7.0pt
              "Times New Roman"">      </span></span><!--[endif]-->Type
          1231,<o:p></o:p></p>
        <p class="MsoListParagraph"
          style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0
          level2 lfo1"><!--[if !supportLists]--><span
            style="mso-list:Ignore">c.<span style="font:7.0pt
              "Times New Roman"">       </span></span><!--[endif]--> Other
          type…<o:p></o:p></p>
        <p class="MsoListParagraph"
          style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
            style="mso-list:Ignore">2)<span style="font:7.0pt
              "Times New Roman"">      </span></span><!--[endif]-->RADIATORS:
          I would like to use type 1231 to simulate radiators  - it is
          good way? The problem is that construction of my radiators is
          as you can see in attachments.<o:p></o:p></p>
        <p class="MsoNormal" style="margin-left:18.0pt">How to find
          required values to define model of radiators? e.g. What is
          ‘Inside diameter of the pipe in the unit’ if in my radiators
          there is no pipe inside, they are only connected to pipe…
          (attachments)<o:p></o:p></p>
        <p class="MsoNormal" style="margin-left:18.0pt"><o:p> </o:p></p>
        <p class="MsoNormal" style="margin-left:18.0pt">I will be
          grateful for any trick and hints!<o:p></o:p></p>
        <p class="MsoNormal" style="margin-left:18.0pt">Regards!<o:p></o:p></p>
        <p class="MsoNormal" style="margin-left:18.0pt">Karol<o:p></o:p></p>
        <p class="MsoNormal">-----------------------------------------<o:p></o:p></p>
        <p class="MsoNormal">mgr <span lang="PL">inż. Karol Bandurski<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="PL">Instytut Inżynierii
            Środowiska<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="PL">Politechnika Poznańska<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="PL"><a moz-do-not-send="true"
              href="www.ee.put.poznan.pl"><span style="color:blue">www.ee.put.poznan.pl</span></a><o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="PL"><a moz-do-not-send="true"
              href="www.put.poznan.pl"><span style="color:blue">www.put.poznan.pl</span></a><o:p></o:p></span></p>
        <p class="MsoNormal"><o:p> </o:p></p>
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      <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
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