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    Karol,<br>
    The general rule of thumb that I use is 5 times the default (which
    accounts only for the thermal capacitance of the air). The formula
    ends up being ZoneVolume*1.2*1.007*5 (1.2 is the density of air,
    1.007 is the specific heat)<br>
    Best,<br>
     David<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 7/17/2012 06:01, Karol Bandurski
      wrote:<br>
    </div>
    <blockquote cite="mid:006b01cd640b$78d1b6c0$6a752440$@put.poznan.pl"
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        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US">Dear All</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US">I model block of flats in TRNSYS. One Dwelling
            is one zone.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US">I am wondering how can I estimate heat
            capacitance of zones. I take into account partition walls
            and air, but what about furniture and other equipment?<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US">Do you have some idea/experience? maybe some
            constant coefficient should be applied by me?<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US"> <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US">Regards,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US">Karol</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US">------------------------------------------------<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US">Karol Bandurski </span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US">MSc.</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;background:white"><a
              moz-do-not-send="true" href="http://www.ee.put.poznan.pl/"
              target="_top"><span
                style="color:#1F497D;text-decoration:none" lang="EN-US">Institute
                of Environmental Engineering</span></a></span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;background:white"
            lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;background:white"
            lang="EN-US">Poznan University of Technology<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;background:white"><a
              moz-do-not-send="true" href="http://www.ee.put.poznan.pl/"><span
                lang="EN-US">www.ee.put.poznan.pl</span></a></span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;background:white"
            lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;background:white"><a
              moz-do-not-send="true" href="http://www.put.poznan.pl/">www.put.poznan.pl</a><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
            lang="EN-US"><o:p> </o:p></span></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
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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