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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Dear Siliang,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Did you change the u-value only or did you generate a new glazing properties with window?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Type 56 doesn’t use the g-value for the simulation, it is displayed only for selecting a window.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Further information on the window modeling is found in Trnsys documentation of Type 56.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Marion<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>Von:</b> TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org>
<b>Im Auftrag von </b>Siliang Yang via TRNSYS-users<br>
<b>Gesendet:</b> Montag, 25. März 2019 08:00<br>
<b>An:</b> TRNSYS users mailing list at OneBuilding.org <trnsys-users@lists.onebuilding.org><br>
<b>Cc:</b> Siliang Yang <siliang.yang@unsw.edu.au><br>
<b>Betreff:</b> [TRNSYS-users] Does TRNSYS actually take the SHGC into account for the load calculation?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D">Dear colleagues,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D">I am trying to analyse how the heating/cooling load of the space will be influenced by varying the solar heat gain coefficient (SHGC) of the external window. I created groups of windows as follows:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><img width="513" height="394" style="width:5.3437in;height:4.1041in" id="Picture_x0020_17" src="cid:image009.png@01D4E2E8.C90CB410" alt="WinID-Lib"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D">As you can see, the SHGC (g-value) was gradually changed while the visible light transmittance (VLT) was identical for each group of windows. From the physics point of view, the internal load should
be changed as the change of SHGC. However, refer to my TRNSYS simulation results (see the following screenshot), the internal load did not change with the change of SHGC value while the VLT value was constant. It seems like the load will change as the VLT
changes which is not related to the SHGC at all.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><img width="843" height="350" style="width:8.7812in;height:3.6458in" id="Picture_x0020_19" src="cid:image012.png@01D4E2E8.C90CB410" alt="NatVent_SHGC_VLT_SummerWk_Sydney.xlsx - Excel"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D">I don’t think those are reasonable results and I’ve carefully checked my TRNSYS models for sure the models were correct. That will be very appreciated if anyone might point out the seasons for the
issue of my case.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D">Thank you so much!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D">Siliang<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial",sans-serif;color:#E36C0A;mso-fareast-language:EN-AU">Siliang Yang</span></b><span lang="EN-AU" style="font-size:8.5pt;font-family:"Arial",sans-serif;color:#7F7F7F;mso-fareast-language:EN-AU"><o:p></o:p></span></p>
<p class="MsoNormal"><i><span lang="EN-AU" style="font-size:8.5pt;font-family:"Arial",sans-serif;color:#7F7F7F;mso-fareast-language:EN-AU">PhD Candidate and Casual Academic, UNSW Built Environment
<o:p></o:p></span></i></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:8.5pt;font-family:"Arial",sans-serif;color:#7F7F7F;mso-fareast-language:EN-AU">Room 6007, Red Centre West Wing
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