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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Francesco,<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">I don’t believe TRNSYS can model daylighting, but I would email the TRNSYS list to be sure, trnsys-users@cae.wisc.edu.
<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">What we do is model the daylighting using Radiance/Daysim, and then integrate those results into TRNSYS by adjusting the artificial lighting schedule.
<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">In general it is difficult to model ASHRAE 90.1 system types in TRNSYS, but doable. Also, I would discourage you from modeling more than 20-30 zones as it gets
cumbersome in TRNSYS. <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">We typically use TRNSYS to design complex systems, and then adjust other software such as eQuest to match for compliance modeling. Sometimes an exceptional
calculation is required when the changes are just too much for eQuest. <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">Our experience is that model reviewers don’t understand TRNSYS as it doesn’t provide “canned” reports like TRACE or eQuest that are familiar to them.
<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">Good luck.<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">Fred<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"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#660000;text-transform:uppercase">Fred Betz</span></b><b><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#333333">
</span></b><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#333333">PhD., LEED AP
<br>
</span><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#333333;text-transform:uppercase">Sustainable Systems Analyst</span><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#333333"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#333333"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#660000">AEI</span></b><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#333333"> |
AFFILIATED ENGINEERS, INC. <br>
5802 Research Park Blvd. | Madison, WI 53719<br>
<br>
</span><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#660000">P: 608.236.1175 | F: 608.238.2614</span><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#333333"> <br>
</span><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#660000"><a href="mailto:fbetz@aeieng.com"><span style="color:#660000;text-decoration:none">fbetz@aeieng.com</span></a> |
</span><b><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#660000"><a href="http://www.aeieng.com/"><span style="color:#660000;text-decoration:none">www.aeieng.com</span></a></span></b><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#333333">
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> francesco.passerini@inwind.it [mailto:francesco.passerini@inwind.it]
<br>
<b>Sent:</b> Monday, April 30, 2012 11:26 AM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] TRNSYS: LIGHTING<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto"><span lang="EN-GB">Hello. </span>
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto"><span lang="EN-GB">I attended a course about TRNSYS v.17 and probably my research group will buy it. Our idea is to use TRNSYS for simulations according to ASHRAE 90.1 annex G (LEED certification refers to
that method).</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto"><span lang="EN-GB">Can TRNSYS v.17 calculate the internal illuminance? It would be useful to model lighting control systems, e.g. if the artificial lighting is switched off when solar lighting provides a
determined level of </span><span lang="EN-GB" style="font-family:"Arial","sans-serif"">internal illuminance (</span><span lang="EN-GB">lux).</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto"><span lang="EN-GB">Best Regards</span><o:p></o:p></p>
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