<div dir="ltr"><div>Dear Nathan Miller,</div><div> </div><div>Thank you very much for your response. Would you explain what you meant by not separating out fan power from the cooling EER?</div><div> </div><div>The solution I was thinking was creating a dummy zone which is exactly the same as the zone with the unit heater and connecting the baseline cooling system to this new zone. This doubles the lights and equipment though, but this could easily be fixed by simply dividing these energy consumption items by two. What do you think about this solution? Can you think of any drawback of this solution?</div>
<div> </div><div> I'd appreciate it very much if you could help me with these questions,</div><div> </div><div>Thanks,</div><div>Best Regards,</div><div>Simge Andolsun, PhD</div></div><div class="gmail_extra"><br><br>
<div class="gmail_quote">On Fri, Nov 15, 2013 at 5:56 PM, Nathan Miller <span dir="ltr"><<a href="mailto:nathanm@rushingco.com" target="_blank">nathanm@rushingco.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" vlink="#954F72" link="#0563C1">
<div>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">You could always model them as Packaged Terminal Air-Conditioners. Define the heat source to match your unit heaters (gas/electric). Then you get DX cooling.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">On jobs I’ve worked on with electric resistance heat and no cooling, I’ve used the PTAC system type, zeroed out the fan-power, selected electric heat, and it
was accepted by the reviewers. In that case I DID NOT separate out fan power from the cooling EER, since otherwise I would not account for the artificial fan energy in addition to the artificial cooling energy mandated by having to model a cooling system.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="color:rgb(99,36,35);font-family:"Verdana","sans-serif";font-size:10pt">Nathan Miller
</span></b><b><span style="color:rgb(31,73,125);font-family:"Verdana","sans-serif";font-size:8pt">-</span></b><b><span style="color:rgb(99,36,35);font-family:"Verdana","sans-serif";font-size:10pt">
</span></b><b><span style="color:rgb(99,36,35);font-family:"Verdana","sans-serif";font-size:8pt">PE, LEED<sup>®</sup>AP BD+C, CEM<u></u><u></u></span></b></p>
<p class="MsoNormal" style="margin-bottom:4pt"><i><span style="font-family:"Verdana","sans-serif";font-size:8pt">Mechanical Engineer/Senior Energy Analyst
<u></u><u></u></span></i></p>
<p class="MsoNormal" style="line-height:115%"><b><span style="color:rgb(99,36,35);line-height:115%;font-family:"Verdana","sans-serif";font-size:8pt">RUSHING</span></b><span style="color:rgb(191,171,127);line-height:115%;font-family:"Verdana","sans-serif";font-size:8pt">
</span><span style="line-height:115%;font-family:"Verdana","sans-serif";font-size:8pt">|
</span><b><span style="color:rgb(99,36,35);line-height:115%;font-family:"Verdana","sans-serif";font-size:8pt">D</span></b><span style="color:rgb(191,171,127);line-height:115%;font-family:"Verdana","sans-serif";font-size:8pt">
</span><span style="line-height:115%;font-family:"Verdana","sans-serif";font-size:8pt"><a href="tel:206-788-4577" target="_blank" value="+12067884577">206-788-4577</a> |</span><span style="color:rgb(191,171,127);line-height:115%;font-family:"Verdana","sans-serif";font-size:8pt">
</span><b><span style="color:rgb(99,36,35);line-height:115%;font-family:"Verdana","sans-serif";font-size:8pt">O</span></b><span style="color:rgb(165,0,33);line-height:115%;font-family:"Verdana","sans-serif";font-size:8pt">
</span><span style="line-height:115%;font-family:"Verdana","sans-serif";font-size:8pt"><a href="tel:206-285-7100" target="_blank" value="+12062857100">206-285-7100</a></span><span style="color:rgb(191,171,127);line-height:115%;font-family:"Verdana","sans-serif";font-size:8pt"><u></u><u></u></span></p>
<p class="MsoNormal" style="line-height:115%"><b><span style="color:rgb(111,18,0);line-height:115%;font-family:"Verdana","sans-serif";font-size:8pt"><a href="http://www.rushingco.com/" target="_blank"><span style="color:rgb(111,18,0)">www.rushingco.com</span></a></span></b><b><span style="color:rgb(99,36,35);line-height:115%;font-family:"Verdana","sans-serif";font-size:9pt"><u></u><u></u></span></b></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-family:"Calibri","sans-serif";font-size:11pt">From:</span></b><span style="font-family:"Calibri","sans-serif";font-size:11pt"> <a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a> [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Simge Andolsun<br>
<b>Sent:</b> Friday, November 15, 2013 3:05 PM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] Modeling Zones with Unit heaters as per ASHRAE 90.1. Appendix G<u></u><u></u></span></p><div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal">ASHRAE 90.1. Appendix G says that, even if a zone is heating only in the actual building, a cooling system identical to that in the baseline system should be modeled in the as-built model with intermittent fan operation to meet the loads.
I have seen projects with zones that have only unit heaters with no cooling air supply. eQuest does not allow for modeling of any cooling system in a zone with a unit heater. What would be your approach to solving this problem?
<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">I would appreciate it very much if you could help me with this question.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Thank you very much in advance for your suggestions,<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Best Regards,<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Simge Andolsun, PhD.<u></u><u></u></p>
</div>
</div>
</div></div></div>
<br><br></div>
</blockquote></div><br></div>