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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-family:"Arial Narrow","sans-serif";color:#0070C0'>I think the way to do this is to set the night fans to cycle on any and set an OA Schedule (like so):<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";color:#0070C0'><o:p> </o:p></span></p><p class=MsoNormal><img width=495 height=364 id="Picture_x0020_1" src="cid:image001.png@01CE0AB8.31F6EF50"><span style='font-family:"Arial Narrow","sans-serif";color:#0070C0'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:10.0pt;font-family:"Times New Roman","serif"'>MIN-AIR-SCH<o:p></o:p></span></b></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Takes the U-name of a SCHEDULE that contains hourly values of the ratio of minimum outside air flow to supply air flow. Values in the MIN-AIR-SCH vary from 0.0 (no outside air flow; economizer inactive if specified) to 1.0 (100% outside air flow). A value of 0.001 actives the economizer. A value of -999 returns the hourly value to MIN-OUTSIDE-AIR or to the program's calculated minimum outside air value (found on report SV-A for the SYSTEM or for each zone for zonal systems). During a warmup period, this schedule is normally set to zero and can then be set to -999 during other hours to allow the specified or calculated ventilation minimum damper position to be used. Note that schedules are ignored in the design routines; therefore, the minimum ventilation air desired for design must be specified either at the zone or system level. <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";color:#0070C0'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";color:#0070C0'><o:p> </o:p></span></p><p class=MsoNormal><img width=498 height=371 id="Picture_x0020_2" src="cid:image002.png@01CE0AB8.31F6EF50"><span style='font-family:"Arial Narrow","sans-serif";color:#0070C0'><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";color:#0070C0'><o:p> </o:p></span></p><div><p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#DCAA2C'><o:p> </o:p></span></b></p><p class=MsoNormal style='text-autospace:none'><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'>Vikram Sami</span></b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'>, LEED AP BD+C<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'>Sustainable Design Analyst<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'>1315 Peachtree St. NE, Atlanta, GA 30309<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'>t: 404-443-7462 f: </span><span lang=ES style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'>404.892.5823 </span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'> e: vikram.sami@perkinswill.com </span><span style='color:#0070C0'><a href="http://www.perkinswill.com/"><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray;text-decoration:none'>www.perkinswill.com</span></a></span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'><o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:3.0pt;text-autospace:none'><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'>Perkins+Will.</span></b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'> </span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#ADD425'>Ideas + buildings that honor the broader goals of society</span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:green'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#0070C0'><o:p> </o:p></span></p></div><p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";color:#0070C0'><o:p> </o:p></span></p><div><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"'> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Alex Blue<br><b>Sent:</b> Thursday, February 14, 2013 12:02 PM<br><b>To:</b> neeraj arora; equest-users@lists.onebuilding.org<br><b>Subject:</b> Re: [Equest-users] How to verify that outside air is modeled with zero flow<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>Hi Neeraj,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>To model this in eQuest you would go to the air-side system -> fans -> night cycle control and set night ventilation to unavailable and fan cycle to the appropriate control scheme. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>If you want to confirm this setup using the outputs from eQuest, I believe you will need to set up hourly reports for the systems and take a look there. To my knowledge, it doesn’t show up explicitly in the .sim file. As a first approximation, you could check the SS-K report, and see if there is any difference between “temperature between outdoor & room air all hours” and “temperature difference between outdoor & room air fan off hours” which could suggest whether there is some sort of difference between “all hours” and “fan off hours” in the eyes of the model.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Alex<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><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"'> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>neeraj arora<br><b>Sent:</b> Thursday, February 14, 2013 4:52 AM<br><b>To:</b> equest-users@lists.onebuilding.org<br><b>Subject:</b> [Equest-users] How to verify that outside air is modeled with zero flow<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-align:justify'>Hi friends,<o:p></o:p></p><p class=MsoNormal style='text-align:justify'><o:p> </o:p></p><p class=MsoNormal style='text-align:justify'>How to verify that outside air is modeled (in eQuest) with zero flow in both the Baseline and Proposed Case during unoccupied periods when fans are cycled on to meet unoccupied setback temperatures?<o:p></o:p></p><p class=MsoNormal style='text-align:justify'>And how to model it in eQuest actually?<o:p></o:p></p><p class=MsoNormal style='text-align:justify'>I got this comment from the reviewer in one of our projects.<o:p></o:p></p><p class=MsoNormal style='text-align:justify'><o:p> </o:p></p><p class=MsoNormal style='text-align:justify'>Thanks in advance.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-align:justify'>Neeraj Arora<o:p></o:p></p><p class=MsoNormal><i><span style='font-size:9.0pt;color:#1F497D'><o:p> </o:p></span></i></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>