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    <p>Christina,</p>
    <p>  Thanks for responding to this with such a comprehensive
      explanation! <br>
    </p>
    <p>David</p>
    <p><br>
    </p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 03/17/2021 04:20, hotline via
      TRNSYS-users wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:AM0PR01MB5588D6865F8BACCA2A2508BAD16A9@AM0PR01MB5588.eurprd01.prod.exchangelabs.com">
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        Hi Toni, </div>
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        <br>
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        you said you are using an internal shading factor for the
        adjacent window, right? In contrast to external shading, which
        just uses a simple factor to determine the shading (ESHADE = 1
        -> Transmission = 0), internal shading is modelling  much
        more detailed effects, see image below:</div>
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        <span style="color: rgb(0, 0, 0); font-family: Calibri, Arial,
          Helvetica, sans-serif; font-size: 12pt;">Of all the radiation
          coming in through the window, a part is absorbed by the
          shading device and then released to the airnode through
          convection, some is reflected towards the window, again there
          we have absorption, convection and reflection back towards the
          zone and so on. Therefore, an internal shading device can
          never prevent all solar gains from entering a zone. Please see
          <i>5.2.4.6. Definition of a New Window Type </i>and <i>5.4.2.9.
            External and Internal Shading Devices
          </i>of the Multizone Building part in the TRNSYS Documentation
          for more info on this.</span><br>
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        Best regards, </div>
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        font-size: 12pt; color: rgb(0, 0, 0);">
        Christina</div>
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      <div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
          face="Calibri, sans-serif" color="#000000"><b>Von:</b>
          TRNSYS-users
          <a class="moz-txt-link-rfc2396E" href="mailto:trnsys-users-bounces@lists.onebuilding.org"><trnsys-users-bounces@lists.onebuilding.org></a> im Auftrag
          von Toni Calabrese via TRNSYS-users
          <a class="moz-txt-link-rfc2396E" href="mailto:trnsys-users@lists.onebuilding.org"><trnsys-users@lists.onebuilding.org></a><br>
          <b>Gesendet:</b> Dienstag, 16. März 2021 18:00<br>
          <b>An:</b> TRNSYS users mailing list at OneBuilding.org
          <a class="moz-txt-link-rfc2396E" href="mailto:trnsys-users@lists.onebuilding.org"><trnsys-users@lists.onebuilding.org></a><br>
          <b>Cc:</b> Toni Calabrese <a class="moz-txt-link-rfc2396E" href="mailto:toni.calabrese@ost.ch"><toni.calabrese@ost.ch></a><br>
          <b>Betreff:</b> [TRNSYS-users] Problem with adjacent window</font>
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              <span style="font-size:10.0pt" lang="EN-US">Hi,</span><span
                style="font-size:10.0pt; color:#1F497D"></span></p>
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            <span style="font-size:10.0pt" lang="EN-US">I am working in
              Trnsys18. I have a building model with two thermal zones
              (Wintergarten and one room) with an external window for
              the wintergarten and an adjacent window between the two
              zones. If I set the external shading factor of the
              external window to 1, I have no solar gains in the two
              zones, as it should be -> CORRECT!</span></p>
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            <span style="font-size:10.0pt" lang="EN-US"> </span></p>
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            <span style="font-size:10.0pt" lang="EN-US">I tried then to
              shade just the adjacent window between the two zones (int.
              shading factor of 1 in TRNBUILD) and I expected solar
              gains just in the wintergarten, but not in the room. I got
              solar gains in both zones. It seems that I am not able to
              shade completely just the adjacent window.</span></p>
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            <span style="font-size:10.0pt" lang="EN-US">Which is the
              problem?</span></p>
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            <b><span style="font-size:10.0pt; color:#1F497D">Toni
                Calabrese</span></b><span style="font-size:10.0pt;
              color:#1F497D">, MSc.</span></p>
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            <span style="font-size:10.0pt; color:#1F497D">Wissenschaftlicher
              Projektleiter</span></p>
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            <span style="font-size:10.0pt; color:#1F497D"><a
                href="mailto:toni.calabrese@spf.ch"
                moz-do-not-send="true">toni.calabrese@spf.ch</a> |</span><span
              style="font-size:10.0pt; color:#8C195F">
            </span><span style="font-size:10.0pt; color:#1F497D"><a
                href="mailto:toni.calabrese@ost.ch"
                moz-do-not-send="true">toni.calabrese@ost.ch</a></span><span
              style="font-size:10.0pt; color:#8C195F"></span></p>
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            <span style="font-size:10.0pt; color:#1F497D">T +41 58 257
              4827</span></p>
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            <span style="font-size:10.0pt; color:#1F497D">SPF Institut
              für Solartechnik</span></p>
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            <span style="font-size:10.0pt; color:#1F497D">OST –
              Ostschweizer Fachhochschule</span></p>
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            <span style="font-size:10.0pt; color:#1F497D">Oberseestr. 10
              | CH-8640 Rapperswil | Switzerland |
            </span><u><span style="color:#8C195F"><a
                  href="http://www.spf.ch/" moz-do-not-send="true"><span
                    style="font-size:10.0pt; color:#8C195F">www.spf.ch</span></a></span></u><span
              style="font-size:10.0pt; color:#1F497D"> |
            </span><u><span style="color:#8C195F"><a
                  href="http://www.ost.ch/" moz-do-not-send="true"><span
                    style="font-size:10.0pt; color:#8C195F">www.ost.ch</span></a></span></u><span
              style="font-family:"Calibri",sans-serif;
              color:#1F497D"></span></p>
          <p class="x_MsoNormal" style="margin-top: 0px; margin-bottom:
            0px;margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family:
            Arial, sans-serif;">
            <span style="font-size:10.0pt; color:#1F497D"> </span></p>
          <p class="x_MsoNormal" style="margin-top: 0px; margin-bottom:
            0px;margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family:
            Arial, sans-serif;">
            <span style="font-size:9.0pt; color:#1F497D">OST –
              Ostschweizer Fachhochschule ist der Zusammenschluss aus
              FHS St.Gallen, HSR Rapperswil und NTB Buchs.</span></p>
          <p class="x_MsoNormal" style="margin-top: 0px; margin-bottom:
            0px;margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family:
            Arial, sans-serif;">
            <span style=""> </span></p>
          <p class="x_MsoNormal" style="margin-top: 0px; margin-bottom:
            0px;margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family:
            Arial, sans-serif;">
            <img style="width:.7833in; height:.725in"
              data-outlook-trace="F:1|T:1"
              src="cid:part9.BD59A8C2.4D9E2F22@tess-inc.com" class=""
              width="75" hspace="12" height="70" align="left"><b><span
                style="font-size:10.0pt; color:#8C195F">Kursmodul
                Energiespeicher (4 Tage) an der OST – Rapperswil:</span></b></p>
          <p class="x_MsoNormal" style="margin-top: 0px; margin-bottom:
            0px;margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family:
            Arial, sans-serif;">
            <span style="font-size:10.0pt; color:#004B7A">Alles was Sie
              zu thermischen, elektrischen, chemischen und mechanischen
              Energiespeichern wissen müssen:</span></p>
          <p class="x_MsoNormal" style="margin-top: 0px; margin-bottom:
            0px;margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family:
            Arial, sans-serif;">
            <span style="font-size:10.0pt; color:#004B7A">Do. 20.05. /
              Fr. 21.05. / Do. 27.05. / Fr. 28.05.</span></p>
          <p class="x_MsoNormal" style="margin-top: 0px; margin-bottom:
            0px;margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family:
            Arial, sans-serif;">
            <span style="font-size:10.0pt; color:#004B7A">Jetzt <a
href="https://www.ost.ch/de/event/article/energiespeicher-theorie-und-anwendungen-4-kurstage/"
                moz-do-not-send="true">
                <span style="color:#004B7A">hier</span></a> anmelden</span><span
              style="font-size:10.0pt"></span></p>
          <p class="x_MsoNormal" style="margin-top: 0px; margin-bottom:
            0px;margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family:
            Arial, sans-serif;">
            <span style="font-size:9.0pt; color:#1F497D"> </span></p>
          <p class="x_MsoNormal" style="margin-top: 0px; margin-bottom:
            0px;margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family:
            Arial, sans-serif;">
             </p>
        </div>
      </div>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
    </blockquote>
    <pre class="moz-signature" cols="72">-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
<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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