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    Jingyu,<br>
      Setting the back side convection coefficient to a small but
    non-zero number indicates direct contact with a known (or
    calculated) temperature. It does not mean that there is no energy
    transferred through the surface. If you want to create an adiabatic
    surface within the wall you can set the convective coefficient to
    zero. QCOMO is the energy transferred through the outside surface of
    the wall. So long as the wall temperature and the boundary
    temperature are different, there will still be some energy
    transferred.<br>
    Kind regards,<br>
     David<br>
    <br>
    <div class="moz-cite-prefix">On 3/22/2013 22:27, 璟瑜 黄 wrote:<br>
    </div>
    <blockquote
      cite="mid:1364009236.18290.YahooMailNeo@web92410.mail.cnh.yahoo.com"
      type="cite">
      <div style="color:#000; background-color:#fff; font-family:times
        new roman, new york, times, serif;font-size:12pt">
        <div>Dear user:</div>
        <div>I have created a boundary wall whose temperature is
          provided by myself. And I have set the coefficient of
          convective heat transfer of back side to 1e-006 and solar
          absorptance of back side to 0. I suppose the Qcomo will be 0
          but it is thousands. Why? Qcomo is consisted by convective and
          radiation, isn't it?</div>
        <div>Jingyu Huang</div>
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    <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

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