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<p class="MsoNormal"><span lang="FR">Dear Trnsys users,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR"><o:p> </o:p></span></p>
<p class="MsoNormal">I’m trying to assess thermal comfort in a high glazed space (like a porch/veranda) with TRNSYS 18. I built a model, which geometrically corresponds to an experimental veranda we have at the lab.<o:p></o:p></p>
<p class="MsoNormal">I did temperature measurements in the experimental facility under solar radiation and then I compared it to the simulation.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">All calculation are set in “detailed mode” to take view factors into account. As a result, air temperature is much lower in the simulation, a lot much lower. And the most surprising fact is that when I set the solar to air factor to 1,
both air temperatures match pretty well.<o:p></o:p></p>
<p class="MsoNormal">I concluded from this result that, if I transform all the supposed radiative flux into convection, the thermal balance in the simulation is equal to the experimentation. But when I consider radiative flux from glazings, the radiative part
is missed by the simulation, resulting in a much lower air temperature in the simulation. It is like a part of radiative flux disappeared right after passing through the glazings.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I only used Type 56 to model the high glazed building. Is there a better solution, like a specific type which can do solar radiation calculation in a 100% glazed building ? Or should it work fine with Type 56 only ?<o:p></o:p></p>
<p class="MsoNormal">(of course I can send the project if needed)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Many thanks in advance<o:p></o:p></p>
<p class="MsoNormal">Best regards<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="line-height:115%;text-autospace:none"><b><span style="font-size:9.0pt;line-height:115%;font-family:"Arial",sans-serif;color:#17428C;mso-fareast-language:EN-GB">Wirich FREPPEL</span></b><span style="font-size:8.0pt;line-height:115%;font-family:"Arial",sans-serif;color:#17428C;mso-fareast-language:EN-GB"><br>
</span><span lang="EN-US" style="font-size:9.0pt;line-height:115%;font-family:"Arial",sans-serif;color:#0D4D95;mso-fareast-language:EN-GB">Development engineer
<o:p></o:p></span></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0D4D95;mso-fareast-language:EN-GB">COSMOS -
</span></i><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0D4D95;mso-fareast-language:EN-GB">Buildings Energy Performance & Daylighting Group</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#17428C;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:9.0pt;mso-line-height-rule:exactly;text-autospace:none">
<span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#17428C;mso-fareast-language:EN-GB">Cell: +33 637 053 174<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><b><span lang="FR" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#17428C;mso-fareast-language:EN-GB">Saint-Gobain Research Compiègne<o:p></o:p></span></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
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