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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Good morning,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The project I am working on has a geothermal water source heat pump system with back up boilers and fluid cooler. We have a VAV unit serving the majority of core spaces and DOAS units serving chilled beams for perimeter spaces.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am considering modeling the geothermal system after the multistack units in eQUEST described by Dana (<a href="http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/2011-February/007763.html">http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/2011-February/007763.html</a>) because the method I am currently using with the chillers set to LOOP-TO-LOOP-HP seems like it might not be the best way. I also have problems attaching the fluid cooler to the system with this method (the simulation won’t go past 18%).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am modeling an active chilled beam system served by a DOAS. I’ve been seeing both an IU and PIU system used. Can anyone tell me which one they think is better? And some tips they can give about using this method? I’ve searched through the forums but some of the information seems like it is from a few years ago so I wanted to see if anyone made any more progress!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Any help is much appreciated! Thank you!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>Jessica K. Miller, EIT, LEED® AP</span></b><o:p></o:p></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>Associate<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>HVAC Engineering</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'><br><b>TRO Jung|Brannen<br></b>22 Boston Wharf Road<br>Boston, Massachusetts 02210<br><br><b>t</b> 617.502.3400<br><b>f</b> 617.502.3401<br><br></span><a href="blocked::http://www.trojungbrannen.com/" title="http://www.trojungbrannen.com/"><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:blue'>www.trojungbrannen.com</span></b></a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>