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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:10.0pt;font-family:"Arial","sans-serif"'>Hats off to you, Bill. It looks like a clever solution.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I have noticed that for some HVAC systems the wizard creates one big plenum over all the spaces and for other systems it creates individual plenums over each space below. If one big plenum was created, then you would have additional steps of breaking up the plenum and adding interior walls.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>Keith Swartz, PE, BEMP, LEED AP<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>Senior Energy Engineer | <b>Energy Center of Wisconsin</b></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray'> | <b>Madison.Chicago.Minneapolis<o:p></o:p></b></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>608.210.7123 | <a href="http://www.ecw.org/" title="Energy Center Home Page"><span style='color:black;text-decoration:none'>www.ecw.org</span></a><o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><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"'> Bishop, Bill [mailto:bbishop@pathfinder-ea.com] <br><b>Sent:</b> Wednesday, November 06, 2013 2:29 PM<br><b>To:</b> Bishop, Bill; Hall, Brendan; equest-users@lists.onebuilding.org<br><b>Subject:</b> Re: [Equest-users] NEW (?) eQUEST DOAS workaround using plenum spaces<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>Correction – ceiling surfaces are created for the conditioned spaces below the plenum spaces, so the change to “air wall” is made for the space below, not in the plenum space. You do, however, need to change the plenum zones to “conditioned” in order to assign OA to them. I’m also thinking it might make sense to assign thermostat schedules to one or more DOAS plenum zones, to control whether the DOAS is in heating or cooling mode. You could use schedules with lower heating, higher cooling temps and/or larger throttling range and/or different t-stat type, in order to avoid increasing the reported unmet load hours.<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'>~Bill<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>Bishop, Bill<br><b>Sent:</b> Wednesday, November 06, 2013 2:47 PM<br><b>To:</b> Hall, Brendan; equest-users@lists.onebuilding.org<br><b>Subject:</b> Re: [Equest-users] NEW (?) eQUEST DOAS workaround using plenum spaces<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>You make no changes to the plenum space geometry as it is normally created via the eQUEST wizard, except to make sure there is a ceiling, and change the ceiling surface TYPE to “Air”. I used the “Default Air Wall Construction” which has a U-value of 2.7 Btu/ft2-hr. I’m not sure about DESIGN-COOL-T and DESIGN-HEAT-T. I think you would want them to represent the DOAS SAT, so that the system(s) serving the occupied zones below can be autosized accordingly (as described in the DOE-2 help menu). I just noticed that you have to use “Adjust Loads” for the zone SIZING-OPTION for this effect to be included.<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'>~Bill<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"'> Hall, Brendan [<a href="mailto:BHall@karpinskieng.com">mailto:BHall@karpinskieng.com</a>] <br><b>Sent:</b> Wednesday, November 06, 2013 2:34 PM<br><b>To:</b> Bishop, Bill; <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> RE: NEW (?) eQUEST DOAS workaround using plenum spaces<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>I’d say that is a pretty clever approach. Would you just add the geometry as a normal plenum zone with exterior/interior walls and such or would you just have them exist as plenum zones with only one heat transfer surface in common with each the zone(s) its serving? Wouldn’t you want DESIGN-COOL-T AND DESIGN-HEAT-T to be the same as the zone it is serving? Then you could set the u value of the air wall high so that any cooling or heat that the DOAS provides would then be effectively transferred into the occupied spaces. I think in that scenario it might act as a quasi supply plenum? Not sure without actually trying it. Just my first thoughts, maybe you have already considered all that and the way you described works better.<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'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:black'>Brendan Hall, PE, LEED AP </span><span style='font-size:8.0pt;color:black'>BD+C</span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>Engineer, Mechanical<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:13.5pt;font-family:"Arial","sans-serif";color:red'>karpinski<br></span><span style='font-size:7.5pt;font-family:"Arial","sans-serif";color:#1F497D'>ENGINEERING</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br>3135 Euclid Avenue<br>Cleveland, OH 44115<br></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:red'>P</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'> <a href="tel:216.391.3700" target="_blank">216.391.3700</a> Ext 3111<br></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:red'>E</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'> </span><u><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:blue'><a href="mailto:bhall@karpinskieng.com" target="_blank" title="mailto:myuhasz@karpinskieng.com">bhall@karpinskieng.com</a></span></u><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:blue'><br></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:red'>W </span><u><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:blue'>www.<a href="http://www.karpinskieng.com/" target="_blank" title="http://www.karpinskieng.com/">karpinskieng.com</a></span></u><span style='color:#1F497D'><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'> <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"'> <a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a> [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Bishop, Bill<br><b>Sent:</b> Wednesday, November 06, 2013 1:17 PM<br><b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> [Equest-users] NEW (?) eQUEST DOAS workaround using plenum spaces<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I doubt I’m the first to think of this but I don’t recall it being discussed on the List. Simply put, you can model a DOAS system by assigning it to the plenum spaces above occupied spaces, and putting all OA loads in the plenum zones.<o:p></o:p></p><p class=MsoNormal>I propose the following workaround for modeling dedicated outdoor air systems (DOAS) in eQUEST/DOE-2.2:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Model all shells/floors with plenum spaces if they are served by a DOAS<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Change the plenum zones ZONE: TYPE to “Conditioned”<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Leave the plenum zone COOL-TEMP-SCH and HEAT-TEMP-SCH as “undefined” (no zone control over the DOAS operation)<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Pick DESIGN-COOL-T and DESIGN-HEAT-T values for the plenum zones that match the likely DOAS supply air temperature range<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Create the DOAS as a new SYSTEM (TYPE = [whatever is appropriate])<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Assign the DOAS to the plenum zones above the conditioned zones that it actually serves<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Assign outdoor air only to the plenum zones, representing the outdoor air requirement of the conditioned zones below<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Create/modify internal walls between plenum zones and zones below, making them “Air walls”<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>This method has the following advantages:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>No exceptional calcs or separate models needed (but see “Conditioned area” comment below)<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>All DOAS systems can be modeled as designed, within normal eQUEST constraints<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>A single DOAS system can supply ventilation air to multiple zones/systems<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>DOAS system operation and ventilation supply can be independent of the other systems serving the zones<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Return air temperature to the DOAS closely follows that of the occupied zone, for accurate heat recovery simulation<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Zonal systems “see” the space load from ventilation air that is not supplied at a “zone-neutral” temperature<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>DCV can be modeled, but people need to be assigned to the plenum spaces <u>instead</u> of the occupied spaces below (which might also be a disadvantage of this method)<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>No ventilation load changes need to be made to create the LEED Baseline from the Proposed design model, but the plenum zones need to be assigned to the baseline systems that serve the zones below.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>…but has these disadvantages or does not solve these problems:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Conditioned floor area reported (such as in LS-C) is incorrect. Subtract the area served by the DOAS (as reported on SV-A).<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Latent heat transfer is not simulated across interior walls. Ideally, latent loads should be assigned to the plenum spaces to represent the portion of non-ventilation latent loads handled by the DOAS.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Plenum space FLOOR-WEIGHT may need to be adjusted for realistic lag time and peak load damping (I haven’t thought this out yet)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Please discuss!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>~Bill<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium","sans-serif";color:black'>William Bishop, PE, BEMP, BEAP, LEED AP </span></b><b><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium","sans-serif";color:#006600'>|</span></b><b><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium","sans-serif";color:black'> Pathfinder Engineers & Architects LLP<o:p></o:p></span></b></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=522 style='width:391.85pt;border-collapse:collapse'><tr style='height:.2in'><td width=370 style='width:277.4pt;padding:0in 5.4pt 0in 5.4pt;height:.2in'><p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>Senior Energy Engineer<o:p></o:p></span></b></p></td><td width=153 rowspan=6 style='width:114.45pt;padding:0in 5.4pt 0in 5.4pt;height:.2in'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'><img border=0 width=123 height=83 id="_x0000_i1025" src="cid:image001.jpg@01CEDB0D.E49438E0" alt="webCertified_logo_colorRGB72DPI.jpg"><o:p></o:p></span></p></td></tr><tr style='height:4.9pt'><td width=370 valign=top style='width:277.4pt;padding:0in 5.4pt 0in 5.4pt;height:4.9pt'><p class=MsoNormal><span style='font-size:5.0pt;font-family:"Arial","sans-serif";color:black'><o:p> </o:p></span></p></td></tr><tr style='height:10.5pt'><td width=370 nowrap valign=bottom style='width:277.4pt;padding:0in 5.4pt 0in 5.4pt;height:10.5pt'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#1F497D'>134 South Fitzhugh Street</span><span style='font-size:9.0pt;font-family:"Times New Roman","serif";color:#1F497D'> </span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Rochester, NY 14608<o:p></o:p></span></p></td></tr><tr style='height:13.3pt'><td width=370 valign=top style='width:277.4pt;padding:0in 5.4pt 0in 5.4pt;height:13.3pt'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#1F497D'>T: (585) 325-6004 </span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>Ext. 114</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'> </span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#1F497D'>F: (585) 325-6005</span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></p></td></tr><tr style='height:10.5pt'><td width=370 valign=top style='width:277.4pt;padding:0in 5.4pt 0in 5.4pt;height:10.5pt'><p class=MsoNormal><a href="mailto:wbishop@pathfinder-ea.com"><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>bbishop@pathfinder-ea.com</span></a><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'> </span><a href="http://www.pathfinder-ea.com/"><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>www.pathfinder-ea.com</span></a><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></p></td></tr><tr style='height:26.3pt'><td width=370 valign=top style='width:277.4pt;padding:0in 5.4pt 0in 5.4pt;height:26.3pt'><p class=MsoNormal><span style='font-size:14.0pt;font-family:Webdings;color:green'>P</span><span style='font-size:14.0pt;font-family:"Times New Roman","serif";color:green'> </span><span style='font-size:7.5pt;font-family:"Times New Roman","serif";color:green'>Sustainability – the forest AND the trees.</span><span style='font-size:18.0pt;font-family:Webdings;color:green'> </span><span style='font-size:14.0pt;font-family:Webdings;color:green'>P</span><span style='font-size:14.0pt;color:green'> </span><span style='font-size:14.0pt;font-family:Webdings;color:green'> </span><span style='color:#1F497D'><o:p></o:p></span></p></td></tr></table><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>