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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Awesome – less work then!<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'>With a little more verification/tinkering, you could make sure the dummy-DOAS’s reheat is leveraging a source type (heat pump) & efficiency to match whatever the secondary systems would be doing.<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'>~Nick<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:"Arial","sans-serif";color:#3A7A46'>------------------------------------------------------------------------------------------------------------------------------<o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#3A7A46'>Nick Caton, P.E.</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#3A7A46'><o:p></o:p></span></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=724 style='width:543.0pt;border-collapse:collapse'><tr><td width=230 valign=top style='width:172.3pt;padding:0in 0in 0in 0in'><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'> Senior Energy Engineer</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'> Energy and Sustainability Services</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'> North America Operations</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'> Schneider Electric</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p></td><td width=291 valign=top style='width:218.3pt;padding:0in 0in 0in 0in'><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#57B069'>D </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'>913.564.6361 </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#57B069'>M </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'>785.410.3317 </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#57B069'>E </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><a href="mailto:nicholas.caton@schneider-electric.com"><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'>nicholas.caton@schneider-electric.com</span></a></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#57B069'>F </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'>913.564.6380</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p></td><td width=203 valign=top style='width:152.4pt;padding:0in 0in 0in 0in'><p class=MsoNormal align=right style='text-align:right'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'>15200 Santa Fe Trail Drive<br>Suite 204<br>Lenexa, KS 66219<br>United States</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p></td></tr><tr style='height:4.0pt'><td width=724 colspan=3 valign=top style='width:543.0pt;padding:0in 0in 0in 0in;height:4.0pt'><p class=MsoNormal style='mso-line-height-alt:4.0pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#3A7A46'><img border=0 width=722 height=49 id="Picture_x0020_3" src="cid:image001.png@01D1B50C.A01B6540" alt="cid:image001.png@01D189AB.58634A10"></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#3A7A46'><o:p></o:p></span></p></td></tr></table><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><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><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"'> Michael Campbell [mailto:mcamp1206@gmail.com] <br><b>Sent:</b> Monday, May 23, 2016 2:00 PM<br><b>To:</b> Nicholas Caton<br><b>Cc:</b> equest-users@lists.onebuilding.org<br><b>Subject:</b> Re: [Equest-users] DOAS with dehumidification<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Thanks for the reply Nick. The air will be conditioned by a secondary system. The system is designed so the DOAS/ERV supplied "neutral" air (~75F) to apartments and the space loads are met by split system heat pumps in the apartments. So, if the system is dehumidifying, it is possible that the DOAS could supply air at ~60F, and the assumption is that the heat pumps in the apartments will be able to handle that additional load. <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Mon, May 23, 2016 at 2:04 PM, <<a href="mailto:Nicholas.Caton@schneider-electric.com" target="_blank">Nicholas.Caton@schneider-electric.com</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Mike,</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Ref: Volume 2: Dictionary > HVAC Components > SYSTEM > Airside Control > Humidity Control > MAX-HUMIDITY</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>To my understanding, no explicit mode of doe2 dehumidification DOESN’T assume some form of reheat to deliver the specified/derived supply air temperature. In turn, I’m not certain whether it’s going to be easy to (a) force “sub-cooling” without the use of a custom COOL-SET-SCH schedule (that’s where I’d suggest you go next with this), deriving the anticipated additional coil operations from the weather data and/or the model you’ve already built, and (b) transfer that “sub-cooled” air reheating load to the other systems in your model.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Fair question before you dive further: is the associated reheating going to occur somewhere in the building anyway (i.e. by other systems), and as such would it be a major stretch to simply permit your dummy-zone DOAS perform that reheating? If that’s a reasonable analysis, you might not need to do anything else.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Of course, presence of ERV just layers on the fun. Frankly when ERV gets involved, that’s one of my primary drivers for shifting away from a dummy zone approach and approximating the DOAS system (and its ERV components) into the other conditioning systems to more directly capture what’s coming off the exhaust/relief stream.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>~Nick</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#3A7A46'>------------------------------------------------------------------------------------------------------------------------------</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#3A7A46'>Nick Caton, P.E.</span></b><o:p></o:p></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=724 style='width:543.0pt;border-collapse:collapse'><tr><td width=230 valign=top style='width:172.3pt;padding:0in 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'> Senior Energy Engineer</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'> Energy and Sustainability Services</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'> North America Operations</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'> Schneider Electric</span><o:p></o:p></p></td><td width=291 valign=top style='width:218.3pt;padding:0in 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#57B069'>D </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'><a href="tel:913.564.6361" target="_blank">913.564.6361</a> </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#57B069'>M </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'><a href="tel:785.410.3317" target="_blank">785.410.3317</a> </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#57B069'>E </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><a href="mailto:nicholas.caton@schneider-electric.com" target="_blank"><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'>nicholas.caton@schneider-electric.com</span></a></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#57B069'>F </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'><a href="tel:913.564.6380" target="_blank">913.564.6380</a></span><o:p></o:p></p></td><td width=203 valign=top style='width:152.4pt;padding:0in 0in 0in 0in'><p class=MsoNormal align=right style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:right'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'>15200 Santa Fe Trail Drive<br>Suite 204<br>Lenexa, KS 66219<br>United States</span><o:p></o:p></p></td></tr><tr style='height:4.0pt'><td width=724 colspan=3 valign=top style='width:543.0pt;padding:0in 0in 0in 0in;height:4.0pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-line-height-alt:4.0pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#3A7A46'><img border=0 width=722 height=49 id="_x0000_i1025" src="cid:image001.png@01D1B50C.A01B6540" alt="cid:image001.png@01D189AB.58634A10"></span><o:p></o:p></p></td></tr></table><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><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"'> Equest-users [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Michael Campbell via Equest-users<br><b>Sent:</b> Wednesday, May 18, 2016 7:37 AM<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] DOAS with dehumidification</span><o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div><div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>Hello,<o:p></o:p></p></div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>I am trying to model a DOAS that supplies conditioned outside air to dwelling units. It also has an ERV. I have created a dummy zone with no loads and made the setpoints for the dummy zones my desired heating and cooling supply air temperatures (73F for heating and 75F for cooling). However, the DOAS also has dehumidification in which it will operate in cooling mode to dehumidify at >60% RH. There is no reheat coil, so when the system is dehumidifying, the supply air temperature should drop below the setpoint. <o:p></o:p></p></div></div></div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>Here is the issue I'm having.... when I look at my hourly reports, I can see that the air leaving the cooling coil will drop down to about 60F at times when the system is dehumidifying. However, the dummy space is still showing a space temperature of ~74F. How is this possible? Does anyone have any ideas?<o:p></o:p></p></div></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thank you,<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Mike C<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><br>______________________________________________________________________<br>This email has been scanned by the Symantec Email Security.cloud service.<br>______________________________________________________________________<o:p></o:p></p></div></div></div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal><br>______________________________________________________________________<br>This email has been scanned by the Symantec Email Security.cloud service.<br>______________________________________________________________________<o:p></o:p></p></div></body></html>