<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:10pt"><DIV>Nick:</DIV>
<DIV> </DIV>
<DIV>If you do not use the OA From System how will eQuest calculate the CFM required by varying occupancy? In addition, since the DOAS system might not provide the supply air temperatures required eQuest will not correctly calculate the energy required to condition the OA.</DIV>
<DIV> </DIV>
<DIV>Paul Diglio<BR></DIV>
<DIV style="FONT-FAMILY: times new roman, new york, times, serif; FONT-SIZE: 10pt"><BR>
<DIV style="FONT-FAMILY: times new roman, new york, times, serif; FONT-SIZE: 12pt"><FONT size=2 face=Tahoma>
<HR SIZE=1>
<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Nick Caton <ncaton@smithboucher.com><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Susan F <modelsenergy@gmail.com>; equest-users@lists.onebuilding.org<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Thu, January 27, 2011 10:21:55 AM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [Equest-users] DOAS in baseline<BR></FONT><BR>
<STYLE>
<!--
_filtered {font-family:Wingdings;panose-1:5 0 0 0 0 0 0 0 0 0;}
_filtered {font-family:"MS Mincho";panose-1:2 2 6 9 4 2 5 8 3 4;}
_filtered {font-family:"Cambria Math";panose-1:2 4 5 3 5 4 6 3 2 4;}
_filtered {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;}
_filtered {font-family:Tahoma;panose-1:2 11 6 4 3 5 4 4 2 4;}
_filtered {font-family:"Stylus BT";panose-1:2 14 4 2 2 2 6 2 3 4;}
_filtered {panose-1:2 2 6 9 4 2 5 8 3 4;}
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"serif";}
a:link, span.MsoHyperlink
{color:blue;text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{margin:0in;margin-bottom:.0001pt;font-size:8.0pt;font-family:"sans-serif";}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{margin-top:0in;margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"serif";}
span.EmailStyle17
{font-family:"sans-serif";color:#1F497D;}
span.BalloonTextChar
{font-family:"sans-serif";}
.MsoChpDefault
{}
_filtered {margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{}
_filtered {}
_filtered {font-family:"sans-serif";}
_filtered {}
_filtered {font-family:"sans-serif";}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
-->
</STYLE>
<DIV class=Section1>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Hi Susan!</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"> </SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Whether or not a baseline model gets a separate system for a proposed design featuring a DOAS is dependent on a few things, including how you decided to approach modeling the DOAS in the proposed model.</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"> </SPAN></P>
<P class=MsoListParagraph><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><SPAN>-<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">A clarification first: Type and quantity of baseline systems is determined first and foremost per Appendix G.3.1.1. You generally have either one system per floor or one system per zone, depending on the system type. You never start with “one system per proposed system” except by coincidence.</SPAN></P>
<P class=MsoListParagraph><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><SPAN>-<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><U><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">If</SPAN></U><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"> you use a dummy zone approach (not integrating the DOAS into the proposed systems), <U>and</U> you have one baseline system serving only the dummy zone per G.3.1.1 (or its exceptions), <U>and</U> you have specified the ventilation requirements at that dummy zone (not indirectly from the actual zones - using OA-FROM-SYSTEM for the proposed systems)… <U>then</U> you’ll end up with a distinct baseline system handling the ventilation requirements analogous to the proposed DOAS. </SPAN></P>
<P class=MsoListParagraph><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><SPAN>-<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">In many/most cases (partially dependant on your preferred strategy for handling DOAS’s in your proposed models), you will not have a dedicated baseline system handling the ventilation air. That’s okay.</SPAN></P>
<P style="MARGIN-LEFT: 0.25in" class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"> </SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">~Nick</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"> </SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><IMG id=Picture_x0020_1 alt=cid:489575314@22072009-0ABB src="cid:1.2697528644@web83301.mail.sp1.yahoo.com" width=119 height=37></SPAN><B><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 11pt"></SPAN></B></P>
<P class=MsoNormal><B><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 11pt"> </SPAN></B></P>
<P class=MsoNormal><B><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 11pt">NICK CATON, E.I.T.</SPAN></B><B><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #2d4d5e"></SPAN></B></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #cc9900; FONT-SIZE: 7.5pt">PROJECT ENGINEER</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 10pt">Smith & Boucher Engineers</SPAN><SPAN style="COLOR: #cc9900; FONT-SIZE: 7.5pt"></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 10pt">25501 west valley parkway</P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 10pt">olathe ks 66061</SPAN></P></SPAN>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 10pt">direct 913 344.0036</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 10pt">fax 913 345.0617</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><A title=blocked::www.smithboucher.com rel=nofollow><SPAN style="COLOR: blue; FONT-SIZE: 10pt">www.smithboucher.com</SPAN></A></SPAN><U><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: blue; FONT-SIZE: 10pt"> </SPAN></U><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"> </SPAN></P>
<DIV style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<P class=MsoNormal><B><SPAN style="FONT-FAMILY: 'sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN style="FONT-FAMILY: 'sans-serif'; FONT-SIZE: 10pt"> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Susan F<BR><B>Sent:</B> Thursday, January 27, 2011 6:11 AM<BR><B>To:</B> equest-users@lists.onebuilding.org<BR><B>Subject:</B> [Equest-users] DOAS in baseline</SPAN></P></DIV>
<P class=MsoNormal> </P>
<P class=MsoNormal>This is not exactly an eQUEST question but y'all have been so helpful in the past so I'm hoping you can help here too. I'm looking for a little clarification. It was my understanding if you had a DOAS system that heated and cooled the outside air before delivering it to the floor mechanical room to be combined with return air and further conditioned by the AHU in your Proposed building that this system would NOT be modeled separately in the Baseline. I cannot find anything in 90.1 that would regulate the DOAS system and I'm not sure how you would model it. (I understand the dummy zone concept for modeling DOAS but not sure that would apply to the Baseline.)<BR><BR>Should it be separate system in the Baseline and would it be VAV or constant volume? And if it is a separate system what section of 90.1 would you reference for this?<BR><BR><BR>Thanks in advance.</P></DIV></DIV></DIV>
<P>Nick:</P>
<P> </P>
<P> </P></div></body></html>