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<div class=Section1>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Dear Hayes,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>First question – Unconditioned & Un-occupied
or Conditioned & Occupied <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>This is very important as conditioning
mixes the air. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>In unconditioned & un-occupied we have
measured stratification. This has resulted in the measurement of temperature at
different heights which is then averaged to obtain a room air temperature. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Dr Mark Dewsbury<br>
<br>
Residential <st1:place w:st="on"><st1:PlaceName w:st="on">Thermal</st1:PlaceName>
<st1:PlaceName w:st="on">Performance</st1:PlaceName> <st1:PlaceName w:st="on">Research</st1:PlaceName>
<br>
<font color=black><span style='color:windowtext'><ns0:place
w:insAuthor="Mark Dewsbury" w:insDate="2011-11-22T14:26:00Z"
w:endInsAuthor="Mark Dewsbury" w:endInsDate="2011-11-22T14:26:00Z"><ns0:PlaceType
w:insAuthor="Mark Dewsbury" w:insDate="2011-11-22T14:26:00Z"
w:endInsAuthor="Mark Dewsbury" w:endInsDate="2011-11-22T14:26:00Z"><st1:PlaceType
w:st="on"><font color=navy><span style='color:navy'>School</span></font></st1:PlaceType></ns0:PlaceType><font
color=navy><span style='color:navy'> of </span></font><ns0:PlaceName
w:insAuthor="Mark Dewsbury" w:insDate="2011-11-22T14:26:00Z"
w:endInsAuthor="Mark Dewsbury" w:endInsDate="2011-11-22T14:26:00Z"><font
color=navy><span style='color:navy'>Architecture<br>
</span></font></ns0:PlaceName></ns0:place><ns0:place
w:insAuthor="Mark Dewsbury" w:insDate="2011-11-22T14:26:00Z"
w:endInsAuthor="Mark Dewsbury" w:endInsDate="2011-11-22T14:26:00Z"><ns0:PlaceType
w:insAuthor="Mark Dewsbury" w:insDate="2011-11-22T14:26:00Z"
w:endInsAuthor="Mark Dewsbury" w:endInsDate="2011-11-22T14:26:00Z"><st1:place
w:st="on"><st1:PlaceType w:st="on"><font color=navy><span style='color:navy'>University</span></font></st1:PlaceType></ns0:PlaceType></st1:place><font
color=navy><span style='color:navy'> of </span></font><ns0:PlaceName
w:insAuthor="Mark Dewsbury" w:insDate="2011-11-22T14:26:00Z"
w:endInsAuthor="Mark Dewsbury" w:endInsDate="2011-11-22T14:26:00Z"><st1:PlaceName
w:st="on"><font color=navy><span style='color:navy'>Tasmania</span></font></st1:PlaceName><br>
</ns0:PlaceName></ns0:place></span></font>Locked Bag 1324<br>
Launceston 7250<br>
Ph: 03 6324 4471<br>
mob: 0417 290 807<br>
fax: 03 6324 4088<br>
<font size=2 face=Calibri><span style='font-size:11.0pt;font-family:Calibri'>e:
<a href="mailto:mark.dewsbury@utas.edu.au"
title="blocked::mailto:mark.dewsbury@utas.edu.au">mark.dewsbury@utas.edu.au</a></span></font><font
size=2 face=Calibri><span style='font-size:11.0pt;font-family:Calibri'><o:p></o:p></span></font></st1:place></span></font></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
color=black face="Times New Roman"><span lang=EN-US style='font-size:12.0pt;
font-family:"Times New Roman";color:windowtext'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span lang=EN-US style='font-size:10.0pt;
font-family:Tahoma;color:windowtext'> Hayes Zirnhelt
[mailto:hzirnhelt@hotmail.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, 17 November 2011
11:35 AM<br>
<b><span style='font-weight:bold'>To:</span></b> bldg-sim@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] modelling
stratification in houses</span></font><font size=3 color=black
face="Times New Roman"><span lang=EN-US style='font-size:12.0pt;font-family:
"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>Hi,<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>I'm modelling single family dwellings in EnergyPlus,
and I am wondering about the accuracy of the typical assumption that the zones
are fully mixed .<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>The results of my modelling are showing that the high <u>ratio</u>
of ceiling insulation to wall insulation required by the codes (BC and Canada)
seems to higher than practical (i.e. no point having an R50 roof if your walls
are only R16). However, this is making me wonder if I should be trying to
account for the stratification that occurs in reality (which would increase
losses through the roof).<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>Anyone have any experience with modelling
stratification in a scenario like this? Or know of some empirical studies where
the stratification has been measured? I'm pretty sure I can set up a
temperature gradient in the zone if I know what it should be...<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>Thanks!<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>Hayes<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>Hayes Zirnhelt<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>M.A.Sc Candidate, RU Building Science<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>B.A.Sc Integrated Engineering<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'><a href="mailto:hayes.zirnhelt@ryerson.ca">hayes.zirnhelt@ryerson.ca</a><o:p></o:p></span></font></p>
</div>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<div>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'>On 2011-11-16, at 1:30 PM, <a
href="mailto:bldg-sim-request@lists.onebuilding.org">bldg-sim-request@lists.onebuilding.org</a>
wrote:<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'><br>
<br>
<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 color=black
face=Calibri><span style='font-size:11.0pt'>Send Bldg-sim mailing list
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<br>
When replying, please edit your Subject line so it is more specific<br>
than "Re: Contents of Bldg-sim digest..."<br>
Today's Topics:<br>
<br>
1. eQuest - Heating/Cooling Loads (Katherine Louman-Gardiner)<br>
2. Re: eQuest - Heating/Cooling Loads (Katherine Louman-Gardiner)<br>
3. Re: usgbc response to outdoor air question (Reba Schaber)<br>
4. Re: usgbc response to outdoor air question<br>
(Martin Roy ing. LEED AP)<br>
5. EnergyPlus: Outlet Nodes not matching error (Sachin Sharma)<br>
6. Re: usgbc response to outdoor air question<br>
(Patrick J. O'Leary, Jr.)<br>
7. Re: usgbc response to outdoor air question (Jim Dirkes)<br>
8. Re: EnergyPlus: Outlet Nodes not matching error (Linda Lawrie)<br>
9. Re: usgbc response to outdoor air question (Jeremy Poling)<br>
10. HELP WANTED: Energy Modeler SWA (NY-CT) (Sandor Rosta)<o:p></o:p></span></font></p>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;font-weight:bold'>From: </span></span></font></b><font
size=4 face=Helvetica><span style='font-size:13.5pt;font-family:Helvetica'>"Katherine
Louman-Gardiner" <klgardiner@flowgroup.ca></span></font><o:p></o:p></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;font-weight:bold'>Date: </span></span></font></b><font
size=4 face=Helvetica><span style='font-size:13.5pt;font-family:Helvetica'>November
15, 2011 2:57:02 PM PST</span></font><o:p></o:p></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;font-weight:bold'>To: </span></span></font></b><font
size=4 face=Helvetica><span style='font-size:13.5pt;font-family:Helvetica'><bldg-sim@lists.onebuilding.org></span></font><o:p></o:p></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;font-weight:bold'>Subject: </span>[Bldg-sim]
eQuest - Heating/Cooling Loads</span></font></b><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt'><br>
<br>
<br>
</span></font><font size=3 face="Times New Roman"><span style='font-size:12.0pt;
font-family:"Times New Roman"'><o:p></o:p></span></font></p>
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<div link=blue vlink=purple>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>Hi all,<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>I’m not sure I understand how eQuest calculates the
heating/cooling equipment loads.<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>I’ve built two models with identical envelopes and
internal loads etc, and OA supply. In model A, we have a boiler and chiller
on hot and chilled water loops and a four-pipe fan coil air-side system.
In model B, we’re using an air cooled Heat Pump and two-pipe fan coils.<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>In report PS-C for model A, the sum heat load is -29.6
MBTU, whereas for model B, the sum heat load is -130.2 MBTU. I understand
that the fuel use should be very different, but I don’t know why the load is so
different between the models. Shouldn’t the heating energy delivered to
the spaces be the same in both cases? Why does the Heat Pump system have
a load that is so much higher than its counterpart?<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-CA style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>Similarly, in report SS-E, January has 110 Heating
load hours for Model A, and 385 Heating load hours for Model B. Again,
shouldn’t the loads be the same between the two models? <o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-CA style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>Thanks in advance for the help,<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-CA style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>Katherine<o:p></o:p></span></font><u5:p></u5:p></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'><br>
<br>
<o:p></o:p></span></font></p>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;font-weight:bold'>From: </span></span></font></b><font
size=4 face=Helvetica><span style='font-size:13.5pt;font-family:Helvetica'>"Katherine
Louman-Gardiner" <klgardiner@flowgroup.ca></span></font><font
size=3 face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;font-weight:bold'>Date: </span></span></font></b><font
size=4 face=Helvetica><span style='font-size:13.5pt;font-family:Helvetica'>November
15, 2011 4:06:48 PM PST</span></font><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;font-weight:bold'>To: </span></span></font></b><font
size=4 face=Helvetica><span style='font-size:13.5pt;font-family:Helvetica'><bldg-sim@lists.onebuilding.org></span></font><font
size=3 face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;font-weight:bold'>Subject: </span>Re:
[Bldg-sim] eQuest - Heating/Cooling Loads</span></font></b><font size=3
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman"'><br>
<br>
<br>
</span></font><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-CA
style='font-size:11.0pt;color:#1F497D'>Thanks Brian,<u5:p></u5:p></span></font><span
lang=EN-CA><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-CA
style='font-size:11.0pt;color:#1F497D'>But I’d already examined LS-C, LS-D,
SS-C and SS-D. As one would expect, LS-C and LS-D are the same for both
models. SS-D, however, is not. I guess what I don’t understand is
what eQuest considers a “load” to be. I consider “load” to be the
requirements of the space (including envelope, occupants, and OA), and none of
those things have changed between my models. The only thing that changes
is what system is used to meet the load. <u5:p></u5:p></span></font><span
lang=EN-CA><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-CA
style='font-size:11.0pt;color:#1F497D'>SS-D only has a monthly breakdown – but
doesn’t explain why the loads are different.<u5:p></u5:p></span></font><span
lang=EN-CA><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-CA
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-CA><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-CA
style='font-size:11.0pt;color:#1F497D'>Thanks,<u5:p></u5:p></span></font><span
lang=EN-CA><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-CA
style='font-size:11.0pt;color:#1F497D'>Katherine<u5:p></u5:p></span></font><span
lang=EN-CA><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-CA
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-CA><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0mm 0mm 0mm'>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span lang=EN-US style='font-size:10.0pt;
font-family:Tahoma;color:windowtext'> Brian Fountain
[mailto:greensimbf@gmail.com] <b><span style='font-weight:bold'>On Behalf Of </span></b>Brian
Fountain<br>
<b><span style='font-weight:bold'>Sent:</span></b> November-15-11 3:15 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Katherine Louman-Gardiner<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] eQuest -
Heating/Cooling Loads<u5:p></u5:p></span></font><span lang=EN-CA><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-CA style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>Look at the SS-D and LS-C reports. SS-D shows
the peak heating & cooling loads with outdoor air, LS-C shows the same
without outdoor air ... but will show components so you can determine where the
difference is. <br>
<br>
<br>
On 11/15/2011 5:57 PM, Katherine Louman-Gardiner wrote: <o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>Hi all,<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>I’m not sure I understand how eQuest calculates the
heating/cooling equipment loads.<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>I’ve built two models with identical envelopes and
internal loads etc, and OA supply. In model A, we have a boiler and
chiller on hot and chilled water loops and a four-pipe fan coil air-side
system. In model B, we’re using an air cooled Heat Pump and two-pipe fan
coils.<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>In report PS-C for model A, the sum heat load is -29.6
MBTU, whereas for model B, the sum heat load is -130.2 MBTU. I understand
that the fuel use should be very different, but I don’t know why the load is so
different between the models. Shouldn’t the heating energy delivered to
the spaces be the same in both cases? Why does the Heat Pump system have
a load that is so much higher than its counterpart?<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'> <o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>Similarly, in report SS-E, January has 110 Heating
load hours for Model A, and 385 Heating load hours for Model B. Again,
shouldn’t the loads be the same between the two models? <o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'> <o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>Thanks in advance for the help,<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'> <o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-CA
style='font-size:11.0pt'>Katherine<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
lang=EN-CA style='font-size:12.0pt;font-family:"Times New Roman"'><br>
<br>
<br>
<br>
</span></font><span lang=EN-CA><u5:p></u5:p><o:p></o:p></span></p>
<pre><font size=2 color=black face="Courier New"><span lang=EN-CA
style='font-size:10.0pt'>_______________________________________________<o:p></o:p></span></font><u5:p></u5:p></pre><pre><font
size=2 color=black face="Courier New"><span lang=EN-CA style='font-size:10.0pt'>Bldg-sim mailing list<o:p></o:p></span></font><u5:p></u5:p></pre><pre><font
size=2 color=black face="Courier New"><span lang=EN-CA style='font-size:10.0pt'><a
href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org</a><o:p></o:p></span></font><u5:p></u5:p></pre><pre><font
size=2 color=black face="Courier New"><span lang=EN-CA style='font-size:10.0pt'>To unsubscribe from this mailing list send a blank message to <a
href="mailto:BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG">BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG</a><o:p></o:p></span></font><u5:p></u5:p></pre></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman";
color:windowtext'><br>
<br>
<o:p></o:p></span></font></p>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>From: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>Reba Schaber
<Rschaber@PHMECH.com></span></font><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman";
color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Date: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>November 15,
2011 6:41:36 PM PST</span></font><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>To: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>Jim Dirkes
<jim@buildingperformanceteam.com>,
"equest-users@lists.onebuilding.org"
<equest-users@lists.onebuilding.org>,
"'bldg-sim@lists.onebuilding.org'"
<Bldg-sim@lists.onebuilding.org></span></font><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman";
color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Subject: </span>Re: [Bldg-sim] usgbc response to outdoor air question</span></font></b><font
size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
font-family:"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'><br>
<br>
<br>
<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>RE: <i><span style='font-style:
italic'>“. . . can’t find) anything in 621.1 which says that unoccupied
ventilation should be zero.”<u5:p></u5:p></span></i></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><i><font size=2 color="#1f497d" face=Calibri><span
lang=EN-US style='font-size:11.0pt;color:#1F497D;font-style:italic'><u5:p> </u5:p></span></font></i><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>I think this requirement comes from the
mandatory provisions of 90.1.<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><font size=2 color=black
face=TimesNewRomanPS-BoldMT><span lang=EN-US style='font-size:10.0pt;
font-family:TimesNewRomanPS-BoldMT;color:windowtext;font-weight:bold'>6.4.3.4.3
Shutoff Damper Controls. </span></font></b><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>Both </span></font><i><font size=2
color=black face=TimesNewRomanPS-ItalicMT><span lang=EN-US style='font-size:
10.0pt;font-family:TimesNewRomanPS-ItalicMT;color:windowtext;font-style:italic'>outdoor<u5:p></u5:p></span></font></i><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><i><font size=2 color=black
face=TimesNewRomanPS-ItalicMT><span lang=EN-US style='font-size:10.0pt;
font-family:TimesNewRomanPS-ItalicMT;color:windowtext;font-style:italic'>air </span></font></i><font
size=2 color=black face=TimesNewRomanPSMT><span lang=EN-US style='font-size:
10.0pt;font-family:TimesNewRomanPSMT;color:windowtext'>supply and exhaust
systems shall be equipped with motorized<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>dampers that will automatically shut when
the systems or<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>spaces served are not in use. Ventilation </span></font><i><font
size=2 color=black face=TimesNewRomanPS-ItalicMT><span lang=EN-US
style='font-size:10.0pt;font-family:TimesNewRomanPS-ItalicMT;color:windowtext;
font-style:italic'>outdoor air </span></font></i><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>dampers<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>shall be capable of automatically shutting
off during preoccupancy<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>building warm-up, cool down, and </span></font><i><font
size=2 color=black face=TimesNewRomanPS-ItalicMT><span lang=EN-US
style='font-size:10.0pt;font-family:TimesNewRomanPS-ItalicMT;color:windowtext;
font-style:italic'>setback, </span></font></i><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>except<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>when </span></font><i><font size=2
color=black face=TimesNewRomanPS-ItalicMT><span lang=EN-US style='font-size:
10.0pt;font-family:TimesNewRomanPS-ItalicMT;color:windowtext;font-style:italic'>ventilation
</span></font></i><font size=2 color=black face=TimesNewRomanPSMT><span
lang=EN-US style='font-size:10.0pt;font-family:TimesNewRomanPSMT;color:windowtext'>reduces
energy costs (e.g., night purge) or<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color=black face=TimesNewRomanPSMT><span
lang=EN-US style='font-size:10.0pt;font-family:TimesNewRomanPSMT;color:windowtext'>when
ventilation must be supplied to meet code requirements.</span></font><span
lang=EN-US><u5:p></u5:p><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>Thoughts??<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>Reba<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0mm 0mm 0mm'>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span lang=EN-US style='font-size:10.0pt;
font-family:Tahoma;color:windowtext'> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Jim Dirkes<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, October 17, 2011
9:32 AM<br>
<b><span style='font-weight:bold'>To:</span></b>
equest-users@lists.onebuilding.org; 'bldg-sim@lists.onebuilding.org'<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] usgbc
response to outdoor air question<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-US style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>Dear Patrick,<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>Thank you for sharing this GBCI
response! It is very informative and, while I won’t admit that I’ve been
modeling anything incorrectly, I <u>am</u> going to change a couple of things </span></font><font
color="#1f497d" face=Wingdings><span lang=EN-US style='font-family:Wingdings;
color:#1F497D'>J</span></font><font color="#1f497d"><span lang=EN-US
style='color:#1F497D'>.<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>In particular, I have heard on several
occasions that the Increased Ventilation credit was a clear case of “IEQ vs.
energy”; you make a decision to trade one against the other. After
reading the GBCI response below and then double-checking with ASHRAE 90.1, I
find that they are consistent with each other and effectively allow no penalty
for the increased energy caused by increased ventilation. Very curious,
considering there is no science which demonstrates a health benefit for outdoor
airflows greater than that required by ASHRAE 62.1!<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>The other item is that I failed to
notice (and still can’t find) anything in 621.1 which says that unoccupied
ventilation should be zero. I guess that is OK, but is also curious,
since a portion of the ventilation calcs in 62.1 include consideration for
off-gassing materials (which are always present.)<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>All in all, I’m smarter than I was as a
result of your post, so it’s a good day! Thanks again.<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<div>
<p class=MsoNormal align=center style='text-align:center'><b><font size=4
color="#1f497d" face=Calibri><span lang=EN-US style='font-size:13.5pt;
color:#1F497D;font-weight:bold'>The Building Performance Team<br>
</span></font></b><b><font color="#1f497d"><span lang=EN-US style='color:#1F497D;
font-weight:bold'>James V. Dirkes II, P.E., BEMP , LEED AP<br>
</span></font></b><font color="#1f497d"><span lang=EN-US style='color:#1F497D'>1631
Acacia Drive NW<br>
Grand Rapids, MI 49504<br>
616 450 8653<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0mm 0mm 0mm'>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span lang=EN-US style='font-size:10.0pt;
font-family:Tahoma;color:windowtext'> <a
href="mailto:bldg-sim-bounces@lists.onebuilding.org">bldg-sim-bounces@lists.onebuilding.org</a>
[<a href="mailto:bldg-sim-bounces@lists.onebuilding.org">mailto:bldg-sim-bounces@lists.onebuilding.org</a>]
<b><span style='font-weight:bold'>On Behalf Of </span></b>Patrick J. O'Leary,
Jr.<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, October 17, 2011
11:46 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <a
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>;
<a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a><br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] usgbc response
to outdoor air question<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-US style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'>back in september there was a thread about what the
outdoor air rate in a baseline simulation should be compared to a proposed
simulation, specifically when one is adding 30% more outdoor air to meet the
ieqc2 requirement and earn 1 leed point. there were differences of
opinions about the flow rates between baseline and proposed being either the
same (as required in 90.1 app g) or the baseline being the calculated per 62.1
and the proposed being as designed.<br>
<br>
so i submitted a support request to the usgbc and the reply i received is
below, but in short the response is that unless you're using dcv optionally the
outdoor air rates in the baseline and proposed energy simulations for eac1
should be the same. the response below gives the standard responses to
differing outdoor air rate scenarios.<br>
<br>
regards,<br>
patrick<o:p></o:p></span></font><u5:p></u5:p></p>
<p><font size=3 color=black face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>[Fwd: Case 00531150: General LEED Questions<o:p></o:p></span></font><u5:p></u5:p></p>
<p><font size=3 color=black face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>-------- Original Message --------<o:p></o:p></span></font><u5:p></u5:p></p>
<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0>
<tr>
<td nowrap valign=top style='padding:0mm 0mm 0mm 0mm'>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span style='font-size:11.0pt;font-weight:bold'>Subject:
</span></font><u5:p></u5:p></b><font size=3><span style='font-size:12.0pt'><o:p></o:p></span></font></p>
</td>
<td style='padding:0mm 0mm 0mm 0mm'>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:
12.0pt'>Case 00531150: General LEED Questions [ ref:00D49UeD.5004GN692:ref ]<o:p></o:p></span></font><u5:p></u5:p></p>
</td>
</tr>
<tr>
<td nowrap valign=top style='padding:0mm 0mm 0mm 0mm'>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span style='font-size:11.0pt;font-weight:bold'>Date:
</span></font><u5:p></u5:p></b><font size=3><span style='font-size:12.0pt'><o:p></o:p></span></font></p>
</td>
<td style='padding:0mm 0mm 0mm 0mm'>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:
12.0pt'>Mon, 17 Oct 2011 06:54:51 +0000 (GMT)<o:p></o:p></span></font><u5:p></u5:p></p>
</td>
</tr>
<tr>
<td nowrap valign=top style='padding:0mm 0mm 0mm 0mm'>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span style='font-size:11.0pt;font-weight:bold'>From:
</span></font><u5:p></u5:p></b><font size=3><span style='font-size:12.0pt'><o:p></o:p></span></font></p>
</td>
<td style='padding:0mm 0mm 0mm 0mm'>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:
12.0pt'>"No reply GBCI" <a href="mailto:no-reply@gbci.org"><no-reply@gbci.org></a>
<a href="mailto:no-reply@gbci.org"><no-reply@gbci.org></a><o:p></o:p></span></font><u5:p></u5:p></p>
</td>
</tr>
<tr>
<td nowrap valign=top style='padding:0mm 0mm 0mm 0mm'>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span style='font-size:11.0pt;font-weight:bold'>To: </span></font><u5:p></u5:p></b><font
size=3><span style='font-size:12.0pt'><o:p></o:p></span></font></p>
</td>
<td style='padding:0mm 0mm 0mm 0mm'>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:
12.0pt'>patrick@<o:p></o:p></span></font><u5:p></u5:p></p>
</td>
</tr>
</table>
<p><u5:p><font size=3 color=black face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'>Dear Patrick,<br>
<br>
Thank you for contacting the Green Building Certification Institute. <br>
<br>
You ask very good questions related to the relationship between ASHRAE
Standards 62.1 and 90.1, and how these standards are applied across multiple
LEED Rating System prerequisites and credits.<br>
<br>
The simple answer to your question is that, for systems without demand
controlled ventilation, the outdoor air included in EA Credit 1 energy
simulations must be the same in the Baseline and Proposed cases. If the project
is attempting IEQ Credit 2 Increased Ventilation, then the values calculated in
IEQc2 must be used in the EAc1 Basline and Proposed case energy models. Note
that IEQc2 does not limit the project to providing only 30% more outdoor air
than AHRAE 62.1 Ventilation Rate Procedure minimums, so higher amounts are
acceptable, as long as they are modeled identically in both the Baseline and
Proposed case energy models.<br>
<br>
The following generic LEED Review Comment applies to ventilation systems that
do not have demand controlled ventilation:<br>
<br>
It is unclear whether the minimum outside air rates (in CFM) were modeled
identically in the Baseline and Proposed case for all zones not having Demand
Control Ventilation in the Proposed case. Please confirm that minimum outside
airflow (in units of cfm) was modeled identically in the Baseline and Proposed
cases using the proposed case rates. Additionally, please verify that all
systems in both the baseline and proposed case are modeled with zero outside
air flow when fans are cycled on to meet unoccupied setback temperatures unless
health or safety regulations mandate an alternate minimum flow during
unoccupied periods (in which case, the unoccupied outside air rates should be
modeled identically in the Baseline and Proposed case).<br>
<br>
The situation becomes a bit more complicated in you have systems that have
demand controlled ventilation (often implemented as Carbon Dioxide control of
outdoor air or as programmed control of outdoor air based on occupancy
sensors.) In this case the Baseline case energy model must include the minimum
outdoor air as determined by the ASHRAE 62.1 Ventilation Rate Procedure
calculations for all systems having demand controlled ventilation. <br>
<br>
The following generic LEED Review Comment applies to ventilation systems that
do have demand controlled ventilation:<br>
<br>
Demand control ventilation was modeled for credit in the proposed case.
Appendix G allows schedule changes for demand control ventilation as approved
by the rating authority (Table G3.1#4(Baseline)). As the LEED Certification
rating authority, GBCI requires that the outside air ventilation rates for the
Baseline case be modeled using minimum ASHRAE 62.1-2004 (or 2007 for LEED-NC
2009 projects) rates wherever credit is taken for demand control ventilation in
the Proposed case. The proposed case minimum rates at design conditions should
be modeled as designed. Please verify that the Baseline Case model reflects
ASHRAE 62.1-2004 (or 2007) minimum rates for any spaces where credit is taken
for demand control ventilation, or revise the model accordingly. For all other
spaces, please confirm that minimum outside airflow (in units of cfm) was
modeled identically in the Baseline and Proposed cases. Additionally, please
verify that all systems in both the baseline and proposed cases are modeled
with zero outside air flow when fans are cycled on to meet unoccupied setback
temperatures unless health or safety regulations mandate an alternate minimum
flow during unoccupied periods (in which case, the unoccupied outside air rates
should be modeled identically in the Baseline and Proposed case).<br>
<br>
Finally, even though you don't address energy recovery in your question,
whether or not you have energy recovery in your ventilation systems may affect
how much better (or worse) your Proposed case energy models perform in relation
to your Baseline case energy models. <br>
<br>
The following generic LEED Review Comment addresses energy recovery in EAc1
energy models as it relates to ventilation systems.<br>
<br>
Energy recovery is modeled for credit in the Proposed case. Please provide
further information regarding the energy recovery efficiency, verify that
outside air is modeled with zero flow in both the Baseline and Proposed cases
during unoccupied periods when fans are cycled on to meet unoccupied setback
temperatures unless health or safety regulations mandate an alternate minimum
flow during unoccupied periods (in which case, the unoccupied outside air rates
should be modeled identically in the Baseline and Proposed Case), and indicate
the bypass mechanism used to bypass the energy recovery during mild conditions.
<br>
<br>
I hope that helps, but if you have any further questions or concerns, please
feel free to use the contact form at <a href="http://www.gbci.org/contactus">http://www.gbci.org/contactus</a>
and select "Follow up to GBCI Response," inputting your case number
from this email's subject line.<br>
<br>
Best Regards,<br>
<br>
Dan Katzenberger, P.E., CEM, BEMP, LEED-AP BD+C<br>
<br>
Green Building Certification Institute <br>
2101 L Street NW, Suite 500 <br>
Washington, DC 20037 <br>
800-795-1746 (phone)<br>
202 828-5110 (fax) <br>
<a href="http://www.gbci.org/contactus">www.gbci.org/contactus</a><br>
<br>
The text above represents a staff opinion of a particular issue, and does NOT
set any precedent to be upheld during a LEED Certification Review. For official
rulings in advance of a LEED Certification Review, customers should utilize the
Formal Inquiries process available in LEED Online that results in a Project
Credit Interpretation Ruling (Project CIR) and possibly a LEED Interpretation
(formerly CIRs or Public Rulings). Applications for LEED Certification will be
thoroughly reviewed based on USGBC Member balloted and approved LEED Rating
Systems, with addenda, and USGBC approved LEED Interpretations, or Project CIRs
administered by GBCI, as applicable. Please note that certain inquiries
submitted to USGBC are forwarded to GBCI for reply as appropriate.<br>
<br>
<br>
_______________________________<br>
CUSTOMER EMAIL ADDRESS: <br>
patirck@<br>
<br>
CUSTOMER INQUIRY:<br>
I am trying to verify what the minimum outdoor airflow rate required for EAc1
is and am not sure if this requires a CIR. <br>
<br>
If the Proposed outdoor air ventilation is a minimum of 30% higher than the
minimum required by ASHRAE 62 in order to achieve 1 LEED point for credit IEQC2
is the Baseline outdoor air rate also 30% higher than the minimum required by
ASHRAE 62? or would the Baseline outdoor air ventilation rate be the minimum
outdoor air rate per ASHRAE 62 calculations. <br>
<br>
In other words, if ASHRAE 62 requires a minimum of 1,000 CFM of outdoor air,
and 1,300 CFM is provided to attain 1 LEED point via IEQC1, is the Baseline
outdoor air flow rate 1,000 CFM or 1,300 CFM in the energy simulation? <br>
<br>
90.1-2007/2004 both say the minimu m outdoor airflow rates
shall be the same for both the proposed and baseline building designs, as does
the user manual. <br>
<br>
But this logic seems to reward the Proposed simulation by conditioning the
additional outdoor air supplied (300 cfm in the example above) to achieve IEQC1
in the Baseline system as well as the proposed. <br>
<br>
The logic of using the minimum required in the Baseline case is reflected in
EAC1 in the equipment efficiency requirements. Baseline efficiencies are the
minimum required, e.g. SEER 13 for packaged units. <br>
<br>
It is the intent of the requirement that I am not sure is clear. Increasing the
outdoor air ventilation rate increases the energy used to condition the outdoor
air, so if the intent is to put the onus on Proposed design to show energy
reduction/LEED compliance over the 90.1/62 requirements shouldn't the Baseline
outdoor air be the minimum air flow rate per the ASHRAE 62 calculations? This
puts the onus on the design team to provide a design that compensates for the
increase in energy to meet IEQC2 by providing some method of processing the
increase in outdoor air while still reducing energy consumption.<o:p></o:p></span></font><u5:p></u5:p></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 color=black
face=Calibri><span style='font-size:11.0pt;color:windowtext'><br>
<br>
<o:p></o:p></span></font></p>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>From: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>"Martin
Roy ing. LEED AP" <martin.roy@mra.qc.ca></span></font><font
color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Date: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>November 15,
2011 7:15:12 PM PST</span></font><font color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>To: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>Reba Schaber
<Rschaber@PHMECH.com></span></font><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Cc: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>"equest-users@lists.onebuilding.org"
<equest-users@lists.onebuilding.org>,
"'bldg-sim@lists.onebuilding.org'"
<Bldg-sim@lists.onebuilding.org></span></font><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Subject: </span>Re: [Bldg-sim] usgbc response to outdoor air question</span></font></b><font
color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 color=black
face=Calibri><span style='font-size:11.0pt;color:windowtext'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;color:windowtext'>Ouch!<br>
In the Model energy code in Canada only up to 20% more than ASHRAE 62 is
allowed in the base case. Imagine a building with 100% more OA and a ERV
of 70% on the proposed case it can easily reach 10 EAcr1 point especially in
cold climate.<br>
<br>
Martin<br>
<br>
<br>
At 21:41 15/11/2011, Reba Schaber wrote:<br>
<br>
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;color:windowtext'>Content-Language: en-US<br>
Content-Type: multipart/alternative;<br>
<x-tab> </x-tab>
boundary="_000_FAA9B7F58E5E4A46BDDF900F4CCAC3FE03ABA763DD3DPHSERVERphm_"<br>
<br>
RE: <i><span style='font-style:italic'>“. . . can’t find) anything in
621.1 which says that unoccupied ventilation should be zero.”<br>
<br>
</span></i>I think this requirement comes from the mandatory provisions of
90.1.<br>
<br>
<b><span style='font-weight:bold'>6.4.3.4.3 Shutoff Damper Controls. </span></b>Both
<i><span style='font-style:italic'>outdoor<br>
air </span></i>supply and exhaust systems shall be equipped with motorized<br>
dampers that will automatically shut when the systems or<br>
spaces served are not in use. Ventilation <i><span style='font-style:italic'>outdoor
air </span></i>dampers<br>
shall be capable of automatically shutting off during preoccupancy<br>
building warm-up, cool down, and <i><span style='font-style:italic'>setback, </span></i>except<br>
when <i><span style='font-style:italic'>ventilation </span></i>reduces energy
costs (e.g., night purge) or<br>
when ventilation must be supplied to meet code requirements.<br>
<br>
Thoughts??<br>
<br>
Reba<br>
<br>
<b><span style='font-weight:bold'>From:</span></b>
bldg-sim-bounces@lists.onebuilding.org [<a
href="mailto:bldg-sim-bounces@lists.onebuilding.org" eudora=autourl>
mailto:bldg-sim-bounces@lists.onebuilding.org</a>] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Jim Dirkes<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, October 17, 2011
9:32 AM<br>
<b><span style='font-weight:bold'>To:</span></b>
equest-users@lists.onebuilding.org; 'bldg-sim@lists.onebuilding.org'<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] usgbc
response to outdoor air question<br>
<br>
Dear Patrick,<br>
<br>
Thank you for sharing this GBCI response! It is very informative and,
while I won’t admit that I’ve been modeling anything incorrectly, I <u>am</u>
going to change a couple of things J.<br>
In particular, I have heard on several occasions that the Increased Ventilation
credit was a clear case of “IEQ vs. energy”; you make a decision to trade one
against the other. After reading the GBCI response below and then
double-checking with ASHRAE 90.1, I find that they are consistent with each
other and effectively allow no penalty for the increased energy caused by
increased ventilation. Very curious, considering there is no science
which demonstrates a health benefit for outdoor airflows greater than that
required by ASHRAE 62.1!<br>
The other item is that I failed to notice (and still can’t find) anything in
621.1 which says that unoccupied ventilation should be zero. I guess that
is OK, but is also curious, since a portion of the ventilation calcs in 62.1
include consideration for off-gassing materials (which are always present.)<br>
All in all, I’m smarter than I was as a result of your post, so it’s a good
day! Thanks again.<br>
<o:p></o:p></span></font></p>
<p class=MsoNormal align=center style='text-align:center'><b><font size=2
color=black face=Calibri><span style='font-size:11.0pt;color:windowtext;
font-weight:bold'>The Building Performance Team<br>
James V. Dirkes II, P.E., BEMP , LEED AP<br>
</span></font></b><font color=black><span style='color:windowtext'>1631 Acacia
Drive NW<br>
Grand Rapids, MI 49504<br>
616 450 8653<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;color:windowtext'> <br>
<b><span style='font-weight:bold'>From:</span></b> <a
href="mailto:bldg-sim-bounces@lists.onebuilding.org">bldg-sim-bounces@lists.onebuilding.org</a>
[<a href="mailto:bldg-sim-bounces@lists.onebuilding.org" eudora=autourl>
mailto:bldg-sim-bounces@lists.onebuilding.org</a>] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Patrick J. O'Leary, Jr.<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, October 17, 2011
11:46 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <a
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>;
<a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a><br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] usgbc response
to outdoor air question<br>
<br>
back in september there was a thread about what the outdoor air rate in a
baseline simulation should be compared to a proposed simulation, specifically
when one is adding 30% more outdoor air to meet the ieqc2 requirement and earn
1 leed point. there were differences of opinions about the flow rates
between baseline and proposed being either the same (as required in 90.1 app g)
or the baseline being the calculated per 62.1 and the proposed being as
designed.<br>
<br>
so i submitted a support request to the usgbc and the reply i received is
below, but in short the response is that unless you're using dcv optionally the
outdoor air rates in the baseline and proposed energy simulations for eac1
should be the same. the response below gives the standard responses to
differing outdoor air rate scenarios.<br>
<br>
regards,<br>
patrick<br>
<br>
[Fwd: Case 00531150: General LEED Questions<br>
<br>
-------- Original Message --------<o:p></o:p></span></font></p>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span style='font-size:11.0pt;color:windowtext;
font-weight:bold'>Subject: </span></font></b><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;color:windowtext'><br>
Case 00531150: General LEED Questions [ ref:00D49UeD.5004GN692:ref ]<o:p></o:p></span></font></p>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span style='font-size:11.0pt;color:windowtext;
font-weight:bold'>Date: </span></font></b><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;color:windowtext'><br>
Mon, 17 Oct 2011 06:54:51 +0000 (GMT)<o:p></o:p></span></font></p>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span style='font-size:11.0pt;color:windowtext;
font-weight:bold'>From: </span></font></b><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;color:windowtext'><br>
"No reply GBCI" <a href="mailto:no-reply@gbci.org"><no-reply@gbci.org></a>
<a href="mailto:no-reply@gbci.org"><no-reply@gbci.org></a><o:p></o:p></span></font></p>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span style='font-size:11.0pt;color:windowtext;
font-weight:bold'>To: </span></font></b><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;color:windowtext'><br>
patrick@<br>
<br>
<br>
Dear Patrick,<br>
<br>
Thank you for contacting the Green Building Certification Institute. <br>
<br>
You ask very good questions related to the relationship between ASHRAE
Standards 62.1 and 90.1, and how these standards are applied across multiple
LEED Rating System prerequisites and credits.<br>
<br>
The simple answer to your question is that, for systems without demand
controlled ventilation, the outdoor air included in EA Credit 1 energy
simulations must be the same in the Baseline and Proposed cases. If the project
is attempting IEQ Credit 2 Increased Ventilation, then the values calculated in
IEQc2 must be used in the EAc1 Basline and Proposed case energy models. Note
that IEQc2 does not limit the project to providing only 30% more outdoor air
than AHRAE 62.1 Ventilation Rate Procedure minimums, so higher amounts are
acceptable, as long as they are modeled identically in both the Baseline and
Proposed case energy models.<br>
<br>
The following generic LEED Review Comment applies to ventilation systems that
do not have demand controlled ventilation:<br>
<br>
It is unclear whether the minimum outside air rates (in CFM) were modeled
identically in the Baseline and Proposed case for all zones not having Demand
Control Ventilation in the Proposed case. Please confirm that minimum outside
airflow (in units of cfm) was modeled identically in the Baseline and Proposed
cases using the proposed case rates. Additionally, please verify that all
systems in both the baseline and proposed case are modeled with zero outside
air flow when fans are cycled on to meet unoccupied setback temperatures unless
health or safety regulations mandate an alternate minimum flow during
unoccupied periods (in which case, the unoccupied outside air rates should be
modeled identically in the Baseline and Proposed case).<br>
<br>
The situation becomes a bit more complicated in you have systems that have
demand controlled ventilation (often implemented as Carbon Dioxide control of
outdoor air or as programmed control of outdoor air based on occupancy
sensors.) In this case the Baseline case energy model must include the minimum
outdoor air as determined by the ASHRAE 62.1 Ventilation Rate Procedure
calculations for all systems having demand controlled ventilation. <br>
<br>
The following generic LEED Review Comment applies to ventilation systems that
do have demand controlled ventilation:<br>
<br>
Demand control ventilation was modeled for credit in the proposed case.
Appendix G allows schedule changes for demand control ventilation as approved
by the rating authority (Table G3.1#4(Baseline)). As the LEED Certification rating
authority, GBCI requires that the outside air ventilation rates for the
Baseline case be modeled using minimum ASHRAE 62.1-2004 (or 2007 for LEED-NC
2009 projects) rates wherever credit is taken for demand control ventilation in
the Proposed case. The proposed case minimum rates at design conditions should
be modeled as designed. Please verify that the Baseline Case model reflects
ASHRAE 62.1-2004 (or 2007) minimum rates for any spaces where credit is taken
for demand control ventilation, or revise the model accordingly. For all other
spaces, please confirm that minimum outside airflow (in units of cfm) was
modeled identically in the Baseline and Proposed cases. Additionally, please
verify that all systems in both the baseline and proposed cases are modeled
with zero outside air flow when fans are cycled on to meet unoccupied setback
temperatures unless health or safety regulations mandate an alternate minimum
flow during unoccupied periods (in which case, the unoccupied outside air rates
should be modeled identically in the Baseline and Proposed case).<br>
<br>
Finally, even though you don't address energy recovery in your question,
whether or not you have energy recovery in your ventilation systems may affect
how much better (or worse) your Proposed case energy models perform in relation
to your Baseline case energy models. <br>
<br>
The following generic LEED Review Comment addresses energy recovery in EAc1
energy models as it relates to ventilation systems.<br>
<br>
Energy recovery is modeled for credit in the Proposed case. Please provide
further information regarding the energy recovery efficiency, verify that
outside air is modeled with zero flow in both the Baseline and Proposed cases
during unoccupied periods when fans are cycled on to meet unoccupied setback
temperatures unless health or safety regulations mandate an alternate minimum
flow during unoccupied periods (in which case, the unoccupied outside air rates
should be modeled identically in the Baseline and Proposed Case), and indicate
the bypass mechanism used to bypass the energy recovery during mild conditions.
<br>
<br>
I hope that helps, but if you have any further questions or concerns, please
feel free to use the contact form at <a href="http://www.gbci.org/contactus">http://www.gbci.org/contactus</a>
and select "Follow up to GBCI Response," inputting your case number
from this email's subject line.<br>
<br>
Best Regards,<br>
<br>
Dan Katzenberger, P.E., CEM, BEMP, LEED-AP BD+C<br>
<br>
Green Building Certification Institute <br>
2101 L Street NW, Suite 500 <br>
Washington, DC 20037 <br>
800-795-1746 (phone)<br>
202 828-5110 (fax) <br>
<a href="http://www.gbci.org/contactus">www.gbci.org/contactus</a><br>
<br>
The text above represents a staff opinion of a particular issue, and does NOT
set any precedent to be upheld during a LEED Certification Review. For official
rulings in advance of a LEED Certification Review, customers should utilize the
Formal Inquiries process available in LEED Online that results in a Project
Credit Interpretation Ruling (Project CIR) and possibly a LEED Interpretation
(formerly CIRs or Public Rulings). Applications for LEED Certification will be
thoroughly reviewed based on USGBC Member balloted and approved LEED Rating
Systems, with addenda, and USGBC approved LEED Interpretations, or Project CIRs
administered by GBCI, as applicable. Please note that certain inquiries
submitted to USGBC are forwarded to GBCI for reply as appropriate.<br>
<br>
<br>
_______________________________<br>
CUSTOMER EMAIL ADDRESS: <br>
patirck@<br>
<br>
CUSTOMER INQUIRY:<br>
I am trying to verify what the minimum outdoor airflow rate required for EAc1
is and am not sure if this requires a CIR. <br>
<br>
If the Proposed outdoor air ventilation is a minimum of 30% higher than the
minimum required by ASHRAE 62 in order to achieve 1 LEED point for credit IEQC2
is the Baseline outdoor air rate also 30% higher than the minimum required by
ASHRAE 62? or would the Baseline outdoor air ventilation rate be the minimum
outdoor air rate per ASHRAE 62 calculations. <br>
<br>
In other words, if ASHRAE 62 requires a minimum of 1,000 CFM of outdoor air,
and 1,300 CFM is provided to attain 1 LEED point via IEQC1, is the Baseline
outdoor air flow rate 1,000 CFM or 1,300 CFM in the energy simulation? <br>
<br>
90.1-2007/2004 both say the minimu m outdoor airflow rates
shall be the same for both the proposed and baseline building designs, as does
the user manual. <br>
<br>
But this logic seems to reward the Proposed simulation by conditioning the
additional outdoor air supplied (300 cfm in the example above) to achieve IEQC1
in the Baseline system as well as the proposed. <br>
<br>
The logic of using the minimum required in the Baseline case is reflected in
EAC1 in the equipment efficiency requirements. Baseline efficiencies are the
minimum required, e.g. SEER 13 for packaged units. <br>
<br>
It is the intent of the requirement that I am not sure is clear. Increasing the
outdoor air ventilation rate increases the energy used to condition the outdoor
air, so if the intent is to put the onus on Proposed design to show energy
reduction/LEED compliance over the 90.1/62 requirements shouldn't the Baseline
outdoor air be the minimum air flow rate per the ASHRAE 62 calculations? This
puts the onus on the design team to provide a design that compensates for the
increase in energy to meet IEQC2 by providing some method of processing the
increase in outdoor air while still reducing energy consumption.<br>
_______________________________________________<br>
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</span></font></div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;color:windowtext'><br>
Martin Roy, ing. PA LEED®, président<br>
Martin Roy et associés<br>
1805 chemin Oka, <br>
Deux-Montagnes, Qc<br>
J7R 1N3<br>
<br>
<br>
Tel: 450-623-0340<br>
Cell. 514-594-6352<br>
<br>
<a href="http://www.mra.qc.ca/" eudora=autourl>www.mra.qc.ca<br>
<br>
<br>
<br>
<br>
<br>
<br>
</a><b><span style='font-weight:bold'>Message de confidentialité <br>
</span></b>Ce courriel (de même que les fichiers joints) est strictement
réservé à l'usage de la personne ou de l'entité à qui il est adressé et peut
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 color=black
face=Calibri><span style='font-size:11.0pt;color:windowtext'><br>
<br>
<o:p></o:p></span></font></p>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>From: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>"Sachin
Sharma" <sachin5787@gmail.com></span></font><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Date: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>November 16,
2011 2:55:12 AM PST</span></font><font color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>To: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>"'bldg-sim@lists.onebuilding.org'"
<Bldg-sim@lists.onebuilding.org></span></font><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Subject: </span>[Bldg-sim] EnergyPlus: Outlet Nodes not matching error</span></font></b><font
color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;color:windowtext'><br>
<br>
<br>
</span></font><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
<!--[if gte mso 9]><xml>
<u5:shapedefaults u10:ext="edit" spidmax="2050"/>
</xml><![endif]--><!--[if gte mso 9]><xml>
<u5:shapelayout u11:ext="edit">
<u5:idmap u11:ext="edit" data="1"/>
</u5:shapelayout>
</xml><![endif]-->
<div link=blue vlink=purple>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-IN
style='font-size:11.0pt'>Hi,<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-IN style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-IN
style='font-size:11.0pt'>I am getting the below error, I have checked the inlet
and outlet nodes of all the branches and components, all node names are
matching but still I am getting this error.<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-IN
style='font-size:11.0pt'> Is it that I am making a fundamental error?
Please suggest how to rectify it.<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-IN style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-IN
style='font-size:11.0pt'><image001.png><o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-IN style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-IN
style='font-size:11.0pt'>Thanks,<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-IN style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><b><font size=2 color="#948a54" face=Calibri><span
lang=EN-IN style='font-size:11.0pt;color:#948A54;font-weight:bold'>With regards,<u5:p></u5:p></span></font></b><span
lang=EN-IN><o:p></o:p></span></p>
<p class=MsoNormal><b><font size=2 color="#948a54" face=Calibri><span
lang=EN-IN style='font-size:11.0pt;color:#948A54;font-weight:bold'><u5:p> </u5:p></span></font></b><span
lang=EN-IN><o:p></o:p></span></p>
<p class=MsoNormal><b><font size=2 color="#948a54" face=Calibri><span
lang=EN-IN style='font-size:11.0pt;color:#948A54;font-weight:bold'>Sachin Sharma<u5:p></u5:p></span></font></b><span
lang=EN-IN><o:p></o:p></span></p>
<p class=MsoNormal><b><font size=2 color="#948a54" face=Calibri><span
lang=EN-IN style='font-size:11.0pt;color:#948A54;font-weight:bold'>M.Tech
Energy Engg.<u5:p></u5:p></span></font></b><span lang=EN-IN><o:p></o:p></span></p>
<p class=MsoNormal><b><font size=2 color="#948a54" face=Calibri><span
lang=EN-IN style='font-size:11.0pt;color:#948A54;font-weight:bold'>Department
of Mechanical Engineering<u5:p></u5:p></span></font></b><span lang=EN-IN><o:p></o:p></span></p>
<p class=MsoNormal><b><font size=2 color="#948a54" face=Calibri><span
lang=EN-IN style='font-size:11.0pt;color:#948A54;font-weight:bold'>NIT Jaipur<u5:p></u5:p></span></font></b><span
lang=EN-IN><o:p></o:p></span></p>
<p class=MsoNormal><b><font size=2 color="#948a54" face=Calibri><span
lang=EN-IN style='font-size:11.0pt;color:#948A54;font-weight:bold'>+91
9983912512<u5:p></u5:p></span></font></b><span lang=EN-IN><o:p></o:p></span></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-IN style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman";
color:windowtext'><br>
<br>
<o:p></o:p></span></font></p>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>From: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>"Patrick
J. O'Leary, Jr." <poleary1969@gmail.com></span></font><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;font-family:
"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Date: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>November 16,
2011 4:13:53 AM PST</span></font><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>To: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>bldg-sim@lists.onebuilding.org</span></font><font
size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
font-family:"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Subject: </span>Re: [Bldg-sim] usgbc response to outdoor air question</span></font></b><font
size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
font-family:"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'><br>
<br>
imagine a building with 100% oa and evaporatively cooled ... 10 eac1 points ...
unless you're gbci reviewer who doesn't understand evap cooling<br>
<br>
On 11/15/11 8:15 PM, Martin Roy ing. LEED AP wrote:<br>
<br>
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'>Ouch!<o:p></o:p></span></font></p>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt' type=cite>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'>In the
Model energy code in Canada only up to 20% more than ASHRAE 62 is allowed in
the base case. Imagine a building with 100% more OA and a ERV of 70% on
the proposed case it can easily reach 10 EAcr1 point especially in cold
climate.<o:p></o:p></span></font></p>
</blockquote>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt' type=cite>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'><o:p> </o:p></span></font></p>
</blockquote>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt' type=cite>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'>Martin<o:p></o:p></span></font></p>
</blockquote>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman";
color:windowtext'><br>
<br>
<br>
<br>
<o:p></o:p></span></font></p>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>From: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>"Jim
Dirkes" <jim@buildingperformanceteam.com></span></font><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;font-family:
"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Date: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>November 16,
2011 5:53:12 AM PST</span></font><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>To: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>"'Martin
Roy ing. LEED AP'" <martin.roy@mra.qc.ca>, "'Reba
Schaber'" <Rschaber@PHMECH.com></span></font><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;font-family:
"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Cc: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>equest-users@lists.onebuilding.org,
"'bldg-sim@lists.onebuilding.org'"
<Bldg-sim@lists.onebuilding.org></span></font><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman";
color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Subject: </span>Re: [Bldg-sim] usgbc response to outdoor air question</span></font></b><font
size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
font-family:"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'><br>
<br>
<br>
<o:p></o:p></span></font></p>
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<div link=blue vlink=purple>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>While ASHRAE 90.1 does a pretty good job
of defining higher efficiency practices, it’s not perfect. On the other
hand, that’s why Appendix G is there; you can show why your idea is better, at
least on the energy part of things.<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>There are still issues with the general
level of knowledge among both the reviewer community as well as the energy
modeling community, and that may never cease. As is commonly the case, a
designer often is facing either (energy efficiency) / or (greater IAQ &
productivity). The challenge is how to get the best combination of both.<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>One benefit of LEED certification seems
to have been that many engineer designers have responded to the challenge of
greater efficiency and performance and changed their standard designs in favor
of something with better performance. That’s probably very good, largely
because stagnation is never good.<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>There certainly is experimentation going
on, not all of which is producing great results, but I still prefer a real
attitude of “continuous improvement” over stagnation!<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<div>
<p class=MsoNormal align=center style='text-align:center'><b><font size=4
color="#1f497d" face=Calibri><span lang=EN-US style='font-size:13.5pt;
color:#1F497D;font-weight:bold'>The Building Performance Team<br>
</span></font></b><b><font color="#1f497d"><span lang=EN-US style='color:#1F497D;
font-weight:bold'>James V. Dirkes II, P.E., BEMP , LEED AP<br>
</span></font></b><font color="#1f497d"><span lang=EN-US style='color:#1F497D'>1631
Acacia Drive NW<br>
Grand Rapids, MI 49504<br>
616 450 8653<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0mm 0mm 0mm'>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
Martin Roy ing. LEED AP [mailto:martin.roy@mra.qc.ca] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, November 15, 2011
10:15 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Reba Schaber<br>
<b><span style='font-weight:bold'>Cc:</span></b> Jim Dirkes;
equest-users@lists.onebuilding.org; 'bldg-sim@lists.onebuilding.org'<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] usgbc
response to outdoor air question<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-US style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'>Ouch!<br>
In the Model energy code in Canada only up to 20% more than ASHRAE 62 is
allowed in the base case. Imagine a building with 100% more OA and a ERV
of 70% on the proposed case it can easily reach 10 EAcr1 point especially in
cold climate.<br>
<br>
Martin<br>
<br>
<br>
At 21:41 15/11/2011, Reba Schaber wrote:<br>
<br>
<br>
<o:p></o:p></span></font></p>
<u5:p></u5:p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'>Content-Language: en-US<br>
Content-Type: multipart/alternative;<br>
boundary="_000_FAA9B7F58E5E4A46BDDF900F4CCAC3FE03ABA763DD3DPHSERVERphm_"<br>
<br>
RE: <i><span style='font-style:italic'>“. . . can’t find) anything in
621.1 which says that unoccupied ventilation should be zero.”<br>
<br>
</span></i>I think this requirement comes from the mandatory provisions of 90.1.<br>
<br>
<b><span style='font-weight:bold'>6.4.3.4.3 Shutoff Damper Controls. </span></b>Both
<i><span style='font-style:italic'>outdoor<br>
air </span></i>supply and exhaust systems shall be equipped with motorized<br>
dampers that will automatically shut when the systems or<br>
spaces served are not in use. Ventilation <i><span style='font-style:italic'>outdoor
air </span></i>dampers<br>
shall be capable of automatically shutting off during preoccupancy<br>
building warm-up, cool down, and <i><span style='font-style:italic'>setback, </span></i>except<br>
when <i><span style='font-style:italic'>ventilation </span></i>reduces energy
costs (e.g., night purge) or<br>
when ventilation must be supplied to meet code requirements.<br>
<br>
Thoughts??<br>
<br>
Reba<br>
<br>
<b><span style='font-weight:bold'>From:</span></b> <a
href="mailto:bldg-sim-bounces@lists.onebuilding.org">bldg-sim-bounces@lists.onebuilding.org</a>
[<a href="mailto:bldg-sim-bounces@lists.onebuilding.org">
mailto:bldg-sim-bounces@lists.onebuilding.org</a>] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Jim Dirkes<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, October 17, 2011
9:32 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <a
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>;
'bldg-sim@lists.onebuilding.org'<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] usgbc
response to outdoor air question<br>
<br>
Dear Patrick,<br>
<br>
Thank you for sharing this GBCI response! It is very informative and,
while I won’t admit that I’ve been modeling anything incorrectly, I <u>am</u>
going to change a couple of things J.<br>
In particular, I have heard on several occasions that the Increased Ventilation
credit was a clear case of “IEQ vs. energy”; you make a decision to trade one
against the other. After reading the GBCI response below and then
double-checking with ASHRAE 90.1, I find that they are consistent with each
other and effectively allow no penalty for the increased energy caused by
increased ventilation. Very curious, considering there is no science
which demonstrates a health benefit for outdoor airflows greater than that
required by ASHRAE 62.1!<br>
The other item is that I failed to notice (and still can’t find) anything in
621.1 which says that unoccupied ventilation should be zero. I guess that
is OK, but is also curious, since a portion of the ventilation calcs in 62.1
include consideration for off-gassing materials (which are always present.)<br>
All in all, I’m smarter than I was as a result of your post, so it’s a good
day! Thanks again.<br>
<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal align=center style='text-align:center'><b><font size=2
color=black face=Calibri><span lang=EN-US style='font-size:11.0pt;font-weight:
bold'>The Building Performance Team<br>
James V. Dirkes II, P.E., BEMP , LEED AP<br>
</span></font></b><span lang=EN-US>1631 Acacia Drive NW<br>
Grand Rapids, MI 49504<br>
616 450 8653<o:p></o:p></span><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'> <br>
<b><span style='font-weight:bold'>From:</span></b> <a
href="mailto:bldg-sim-bounces@lists.onebuilding.org">bldg-sim-bounces@lists.onebuilding.org</a>
[<a href="mailto:bldg-sim-bounces@lists.onebuilding.org">
mailto:bldg-sim-bounces@lists.onebuilding.org</a>] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Patrick J. O'Leary, Jr.<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, October 17, 2011
11:46 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <a
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>;
<a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a><br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] usgbc response
to outdoor air question<br>
<br>
back in september there was a thread about what the outdoor air rate in a
baseline simulation should be compared to a proposed simulation, specifically
when one is adding 30% more outdoor air to meet the ieqc2 requirement and earn
1 leed point. there were differences of opinions about the flow rates
between baseline and proposed being either the same (as required in 90.1 app g)
or the baseline being the calculated per 62.1 and the proposed being as
designed.<br>
<br>
so i submitted a support request to the usgbc and the reply i received is
below, but in short the response is that unless you're using dcv optionally the
outdoor air rates in the baseline and proposed energy simulations for eac1
should be the same. the response below gives the standard responses to
differing outdoor air rate scenarios.<br>
<br>
regards,<br>
patrick<br>
<br>
[Fwd: Case 00531150: General LEED Questions<br>
<br>
-------- Original Message --------<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span lang=EN-US style='font-size:11.0pt;font-weight:
bold'>Subject: </span></font></b><u5:p></u5:p><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'><br>
Case 00531150: General LEED Questions [ ref:00D49UeD.5004GN692:ref ]<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span lang=EN-US style='font-size:11.0pt;font-weight:
bold'>Date: </span></font></b><u5:p></u5:p><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'><br>
Mon, 17 Oct 2011 06:54:51 +0000 (GMT)<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span lang=EN-US style='font-size:11.0pt;font-weight:
bold'>From: </span></font></b><u5:p></u5:p><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'><br>
"No reply GBCI" <a href="mailto:no-reply@gbci.org"><no-reply@gbci.org></a>
<a href="mailto:no-reply@gbci.org"><no-reply@gbci.org></a><o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span lang=EN-US style='font-size:11.0pt;font-weight:
bold'>To: </span></font></b><u5:p></u5:p><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'><br>
patrick@<br>
<br>
<br>
Dear Patrick,<br>
<br>
Thank you for contacting the Green Building Certification Institute. <br>
<br>
You ask very good questions related to the relationship between ASHRAE
Standards 62.1 and 90.1, and how these standards are applied across multiple
LEED Rating System prerequisites and credits.<br>
<br>
The simple answer to your question is that, for systems without demand
controlled ventilation, the outdoor air included in EA Credit 1 energy
simulations must be the same in the Baseline and Proposed cases. If the project
is attempting IEQ Credit 2 Increased Ventilation, then the values calculated in
IEQc2 must be used in the EAc1 Basline and Proposed case energy models. Note
that IEQc2 does not limit the project to providing only 30% more outdoor air
than AHRAE 62.1 Ventilation Rate Procedure minimums, so higher amounts are
acceptable, as long as they are modeled identically in both the Baseline and
Proposed case energy models.<br>
<br>
The following generic LEED Review Comment applies to ventilation systems that
do not have demand controlled ventilation:<br>
<br>
It is unclear whether the minimum outside air rates (in CFM) were modeled
identically in the Baseline and Proposed case for all zones not having Demand
Control Ventilation in the Proposed case. Please confirm that minimum outside
airflow (in units of cfm) was modeled identically in the Baseline and Proposed
cases using the proposed case rates. Additionally, please verify that all
systems in both the baseline and proposed case are modeled with zero outside
air flow when fans are cycled on to meet unoccupied setback temperatures unless
health or safety regulations mandate an alternate minimum flow during
unoccupied periods (in which case, the unoccupied outside air rates should be
modeled identically in the Baseline and Proposed case).<br>
<br>
The situation becomes a bit more complicated in you have systems that have
demand controlled ventilation (often implemented as Carbon Dioxide control of
outdoor air or as programmed control of outdoor air based on occupancy
sensors.) In this case the Baseline case energy model must include the minimum
outdoor air as determined by the ASHRAE 62.1 Ventilation Rate Procedure
calculations for all systems having demand controlled ventilation. <br>
<br>
The following generic LEED Review Comment applies to ventilation systems that
do have demand controlled ventilation:<br>
<br>
Demand control ventilation was modeled for credit in the proposed case.
Appendix G allows schedule changes for demand control ventilation as approved
by the rating authority (Table G3.1#4(Baseline)). As the LEED Certification
rating authority, GBCI requires that the outside air ventilation rates for the
Baseline case be modeled using minimum ASHRAE 62.1-2004 (or 2007 for LEED-NC
2009 projects) rates wherever credit is taken for demand control ventilation in
the Proposed case. The proposed case minimum rates at design conditions should
be modeled as designed. Please verify that the Baseline Case model reflects
ASHRAE 62.1-2004 (or 2007) minimum rates for any spaces where credit is taken
for demand control ventilation, or revise the model accordingly. For all other
spaces, please confirm that minimum outside airflow (in units of cfm) was
modeled identically in the Baseline and Proposed cases. Additionally, please
verify that all systems in both the baseline and proposed cases are modeled
with zero outside air flow when fans are cycled on to meet unoccupied setback
temperatures unless health or safety regulations mandate an alternate minimum
flow during unoccupied periods (in which case, the unoccupied outside air rates
should be modeled identically in the Baseline and Proposed case).<br>
<br>
Finally, even though you don't address energy recovery in your question,
whether or not you have energy recovery in your ventilation systems may affect
how much better (or worse) your Proposed case energy models perform in relation
to your Baseline case energy models. <br>
<br>
The following generic LEED Review Comment addresses energy recovery in EAc1
energy models as it relates to ventilation systems.<br>
<br>
Energy recovery is modeled for credit in the Proposed case. Please provide
further information regarding the energy recovery efficiency, verify that
outside air is modeled with zero flow in both the Baseline and Proposed cases
during unoccupied periods when fans are cycled on to meet unoccupied setback
temperatures unless health or safety regulations mandate an alternate minimum
flow during unoccupied periods (in which case, the unoccupied outside air rates
should be modeled identically in the Baseline and Proposed Case), and indicate
the bypass mechanism used to bypass the energy recovery during mild conditions.
<br>
<br>
I hope that helps, but if you have any further questions or concerns, please
feel free to use the contact form at <a href="http://www.gbci.org/contactus">http://www.gbci.org/contactus</a>
and select "Follow up to GBCI Response," inputting your case number
from this email's subject line.<br>
<br>
Best Regards,<br>
<br>
Dan Katzenberger, P.E., CEM, BEMP, LEED-AP BD+C<br>
<br>
Green Building Certification Institute <br>
2101 L Street NW, Suite 500 <br>
Washington, DC 20037 <br>
800-795-1746 (phone)<br>
202 828-5110 (fax) <br>
<a href="http://www.gbci.org/contactus">www.gbci.org/contactus</a><br>
<br>
The text above represents a staff opinion of a particular issue, and does NOT
set any precedent to be upheld during a LEED Certification Review. For official
rulings in advance of a LEED Certification Review, customers should utilize the
Formal Inquiries process available in LEED Online that results in a Project
Credit Interpretation Ruling (Project CIR) and possibly a LEED Interpretation
(formerly CIRs or Public Rulings). Applications for LEED Certification will be
thoroughly reviewed based on USGBC Member balloted and approved LEED Rating
Systems, with addenda, and USGBC approved LEED Interpretations, or Project CIRs
administered by GBCI, as applicable. Please note that certain inquiries
submitted to USGBC are forwarded to GBCI for reply as appropriate.<br>
<br>
<br>
_______________________________<br>
CUSTOMER EMAIL ADDRESS: <br>
patirck@<br>
<br>
CUSTOMER INQUIRY:<br>
I am trying to verify what the minimum outdoor airflow rate required for EAc1
is and am not sure if this requires a CIR. <br>
<br>
If the Proposed outdoor air ventilation is a minimum of 30% higher than the
minimum required by ASHRAE 62 in order to achieve 1 LEED point for credit IEQC2
is the Baseline outdoor air rate also 30% higher than the minimum required by
ASHRAE 62? or would the Baseline outdoor air ventilation rate be the minimum
outdoor air rate per ASHRAE 62 calculations. <br>
<br>
In other words, if ASHRAE 62 requires a minimum of 1,000 CFM of outdoor air,
and 1,300 CFM is provided to attain 1 LEED point via IEQC1, is the Baseline outdoor
air flow rate 1,000 CFM or 1,300 CFM in the energy simulation? <br>
<br>
90.1-2007/2004 both say the minimu m outdoor airflow rates
shall be the same for both the proposed and baseline building designs, as does
the user manual. <br>
<br>
But this logic seems to reward the Proposed simulation by conditioning the
additional outdoor air supplied (300 cfm in the example above) to achieve IEQC1
in the Baseline system as well as the proposed. <br>
<br>
The logic of using the minimum required in the Baseline case is reflected in EAC1
in the equipment efficiency requirements. Baseline efficiencies are the minimum
required, e.g. SEER 13 for packaged units. <br>
<br>
It is the intent of the requirement that I am not sure is clear. Increasing the
outdoor air ventilation rate increases the energy used to condition the outdoor
air, so if the intent is to put the onus on Proposed design to show energy
reduction/LEED compliance over the 90.1/62 requirements shouldn't the Baseline
outdoor air be the minimum air flow rate per the ASHRAE 62 calculations? This
puts the onus on the design team to provide a design that compensates for the
increase in energy to meet IEQC2 by providing some method of processing the
increase in outdoor air while still reducing energy consumption.<br>
_______________________________________________<br>
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<div class=MsoNormal align=center style='text-align:center'><font size=2
color=black face=Calibri><span lang=EN-US style='font-size:11.0pt'>
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</span></font></div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'><br>
Martin Roy, ing. PA LEED®, président<br>
Martin Roy et associés<br>
1805 chemin Oka, <br>
Deux-Montagnes, Qc<br>
J7R 1N3<br>
<br>
<br>
Tel: 450-623-0340<br>
Cell. 514-594-6352<br>
<br>
<a href="http://www.mra.qc.ca/">www.mra.qc.ca<br>
<br>
<br>
<br>
<br>
<br>
<br>
</a><b><span style='font-weight:bold'>Message de confidentialité <br>
</span></b>Ce courriel (de même que les fichiers joints) est strictement
réservé à l'usage de la personne ou de l'entité à qui il est adressé et peut
contenir de l'information privilégiée et confidentielle. Toute divulgation,
distribution ou copie de ce courriel est strictement prohibée et peut être
l’objet de poursuites judiciaires. Si vous avez reçu ce courriel par erreur,
veuillez nous en aviser et le supprimer de votre système informatique
sans l'imprimer, le copier ou le faire suivre a quiconque. <br>
<br>
<b><span style='font-weight:bold'>Devez-vous vraiment imprimer ce courriel
? Pensons environnement...</span></b><o:p></o:p></span></font><u5:p></u5:p></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 color=black
face=Calibri><span style='font-size:11.0pt;color:windowtext'><br>
<br>
<o:p></o:p></span></font></p>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>From: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>Linda Lawrie
<linda@fortlawrie.com></span></font><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Date: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>November 16,
2011 5:56:23 AM PST</span></font><font color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>To: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>"Sachin
Sharma" <sachin5787@gmail.com></span></font><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Cc: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>Bldg-sim@lists.onebuilding.org</span></font><font
color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Subject: </span>Re: [Bldg-sim] EnergyPlus: Outlet Nodes not matching
error</span></font></b><font color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 color=black
face=Calibri><span style='font-size:11.0pt;color:windowtext'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;color:windowtext'>Send your input file to the helpdesk:
<a href="http://energyplus.helpdesk.com/" eudora=autourl>http://energyplus.helpdesk.com<br>
<br>
</a>The BldgSim list is not a list to supply EnergyPlus support.<br>
<br>
Linda<br>
EnergyPlus Development Team<br>
<br>
At 03:55 AM 11/16/2011, Sachin Sharma wrote:<br>
<br>
<br>
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;color:windowtext'>Hi,<br>
<br>
I am getting the below error, I have checked the inlet and outlet nodes of all
the branches and components, all node names are matching but still I am getting
this error.<br>
Is it that I am making a fundamental error? Please suggest how to rectify
it.<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 color=black
face=Calibri><span style='font-size:11.0pt;color:windowtext'><br>
<br>
<o:p></o:p></span></font></p>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>From: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>Jeremy Poling
<Jeremy.Poling@transwestern.net></span></font><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Date: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>November 16,
2011 7:28:10 AM PST</span></font><font color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>To: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>Reba Schaber
<Rschaber@PHMECH.com>, Jim Dirkes
<jim@buildingperformanceteam.com>, <equest-users@lists.onebuilding.org>,
"bldg-sim@lists.onebuilding.org"
<Bldg-sim@lists.onebuilding.org></span></font><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Subject: </span>Re: [Bldg-sim] usgbc response to outdoor air question</span></font></b><font
color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;color:windowtext'><br>
<br>
<br>
<o:p></o:p></span></font></p>
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<div bgcolor=white link=blue vlink=purple>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>There was an earlier discussion on the
list about this:<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>62.1-2007, Section 5.4 states
“Mechanical ventilation systems shall include controls, manual or automatic,
that enable the fan system to operate whenever the spaces served are
occupied. The system shall be designed to maintain the minimum outdoor airflow
as required by Section 6 under any load condition.”<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>62.1-2007, Section 6.2.6.1 states
“Ventilation systems shall be designed to be capable of providing the required
ventilation rates in the breathing zone whenever the zones served by the system
are occupied, including all full- and part-load conditions.”<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>These are generally applied to mean that
the system is not required to operate when spaces are unoccupied. Yes,
the standard does not explicitly state that unoccupied ventilation should be
zero but the standard does not explicitly state that unoccupied ventilation
can’t be zero. Section 5.4 and 6.2.6.1 only require controls and
ventilation rates “whenever the spaces/zones served by the system are occupied”
so it can be implied that the requirement doesn’t apply when the spaces/zones
are unoccupied. There’s a fine interpretive line there, but many of the
official interpretations on 62.1 also lean this direction. If in doubt,
put in an official interpretation request specifically on this with ASHRAE on the
topic to clarify.<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<div>
<p class=MsoNormal><b><font size=1 color="#1f497d" face=Verdana><span
lang=EN-US style='font-size:7.5pt;font-family:Verdana;color:#1F497D;font-weight:
bold'>Jeremy R. Poling, PE, LEED AP+BDC</span></font></b><font color="#1f497d"><span
lang=EN-US style='color:#1F497D'><br>
<br>
<br>
</span></font><span lang=EN-US><u5:p></u5:p><o:p></o:p></span></p>
</div>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0mm 0mm 0mm'>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span lang=EN-US style='font-size:10.0pt;
font-family:Tahoma;color:windowtext'> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Reba Schaber<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, November 15, 2011
8:42 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Jim Dirkes;
equest-users@lists.onebuilding.org; 'bldg-sim@lists.onebuilding.org'<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] usgbc
response to outdoor air question<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-US style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>RE: <i><span style='font-style:
italic'>“. . . can’t find) anything in 621.1 which says that unoccupied
ventilation should be zero.”</span><u5:p></u5:p></i></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><i><font size=2 color="#1f497d" face=Calibri><span
lang=EN-US style='font-size:11.0pt;color:#1F497D;font-style:italic'><u5:p> </u5:p></span></font></i><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>I think this requirement comes from the
mandatory provisions of 90.1.<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><font size=2 color=black
face=TimesNewRomanPS-BoldMT><span lang=EN-US style='font-size:10.0pt;
font-family:TimesNewRomanPS-BoldMT;color:windowtext;font-weight:bold'>6.4.3.4.3
Shutoff Damper Controls. </span></font></b><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>Both </span></font><i><font size=2
color=black face=TimesNewRomanPS-ItalicMT><span lang=EN-US style='font-size:
10.0pt;font-family:TimesNewRomanPS-ItalicMT;color:windowtext;font-style:italic'>outdoor<u5:p></u5:p></span></font></i><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><i><font size=2 color=black
face=TimesNewRomanPS-ItalicMT><span lang=EN-US style='font-size:10.0pt;
font-family:TimesNewRomanPS-ItalicMT;color:windowtext;font-style:italic'>air </span></font></i><font
size=2 color=black face=TimesNewRomanPSMT><span lang=EN-US style='font-size:
10.0pt;font-family:TimesNewRomanPSMT;color:windowtext'>supply and exhaust
systems shall be equipped with motorized<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>dampers that will automatically shut when
the systems or<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>spaces served are not in use. Ventilation </span></font><i><font
size=2 color=black face=TimesNewRomanPS-ItalicMT><span lang=EN-US
style='font-size:10.0pt;font-family:TimesNewRomanPS-ItalicMT;color:windowtext;
font-style:italic'>outdoor air </span></font></i><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>dampers<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>shall be capable of automatically shutting
off during preoccupancy<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>building warm-up, cool down, and </span></font><i><font
size=2 color=black face=TimesNewRomanPS-ItalicMT><span lang=EN-US
style='font-size:10.0pt;font-family:TimesNewRomanPS-ItalicMT;color:windowtext;
font-style:italic'>setback, </span></font></i><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>except<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=TimesNewRomanPSMT><span lang=EN-US style='font-size:10.0pt;font-family:
TimesNewRomanPSMT;color:windowtext'>when </span></font><i><font size=2
color=black face=TimesNewRomanPS-ItalicMT><span lang=EN-US style='font-size:
10.0pt;font-family:TimesNewRomanPS-ItalicMT;color:windowtext;font-style:italic'>ventilation
</span></font></i><font size=2 color=black face=TimesNewRomanPSMT><span
lang=EN-US style='font-size:10.0pt;font-family:TimesNewRomanPSMT;color:windowtext'>reduces
energy costs (e.g., night purge) or<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color=black face=TimesNewRomanPSMT><span
lang=EN-US style='font-size:10.0pt;font-family:TimesNewRomanPSMT;color:windowtext'>when
ventilation must be supplied to meet code requirements.</span></font><span
lang=EN-US><u5:p></u5:p><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>Thoughts??<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>Reba<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0mm 0mm 0mm'>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span lang=EN-US style='font-size:10.0pt;
font-family:Tahoma;color:windowtext'> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Jim Dirkes<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, October 17, 2011
9:32 AM<br>
<b><span style='font-weight:bold'>To:</span></b> equest-users@lists.onebuilding.org;
'bldg-sim@lists.onebuilding.org'<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] usgbc
response to outdoor air question<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-US style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>Dear Patrick,<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>Thank you for sharing this GBCI
response! It is very informative and, while I won’t admit that I’ve been modeling
anything incorrectly, I <u>am</u> going to change a couple of things </span></font><font
color="#1f497d" face=Wingdings><span lang=EN-US style='font-family:Wingdings;
color:#1F497D'>J</span></font><font color="#1f497d"><span lang=EN-US
style='color:#1F497D'>.<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>In particular, I have heard on several
occasions that the Increased Ventilation credit was a clear case of “IEQ vs.
energy”; you make a decision to trade one against the other. After
reading the GBCI response below and then double-checking with ASHRAE 90.1, I
find that they are consistent with each other and effectively allow no penalty
for the increased energy caused by increased ventilation. Very curious,
considering there is no science which demonstrates a health benefit for outdoor
airflows greater than that required by ASHRAE 62.1!<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>The other item is that I failed to
notice (and still can’t find) anything in 621.1 which says that unoccupied
ventilation should be zero. I guess that is OK, but is also curious,
since a portion of the ventilation calcs in 62.1 include consideration for
off-gassing materials (which are always present.)<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'>All in all, I’m smarter than I was as a
result of your post, so it’s a good day! Thanks again.<u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<div>
<p class=MsoNormal align=center style='text-align:center'><b><font size=4
color="#1f497d" face=Calibri><span lang=EN-US style='font-size:13.5pt;
color:#1F497D;font-weight:bold'>The Building Performance Team<br>
</span></font></b><b><font color="#1f497d"><span lang=EN-US style='color:#1F497D;
font-weight:bold'>James V. Dirkes II, P.E., BEMP , LEED AP<br>
</span></font></b><font color="#1f497d"><span lang=EN-US style='color:#1F497D'>1631
Acacia Drive NW<br>
Grand Rapids, MI 49504<br>
616 450 8653<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0mm 0mm 0mm'>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span lang=EN-US style='font-size:10.0pt;
font-family:Tahoma;color:windowtext'> <a
href="mailto:bldg-sim-bounces@lists.onebuilding.org">bldg-sim-bounces@lists.onebuilding.org</a>
[<a href="mailto:bldg-sim-bounces@lists.onebuilding.org">mailto:bldg-sim-bounces@lists.onebuilding.org</a>]
<b><span style='font-weight:bold'>On Behalf Of </span></b>Patrick J. O'Leary,
Jr.<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, October 17, 2011
11:46 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <a
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>;
<a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a><br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] usgbc response
to outdoor air question<u5:p></u5:p></span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-US style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'>back in september there was a thread about what the
outdoor air rate in a baseline simulation should be compared to a proposed
simulation, specifically when one is adding 30% more outdoor air to meet the
ieqc2 requirement and earn 1 leed point. there were differences of
opinions about the flow rates between baseline and proposed being either the
same (as required in 90.1 app g) or the baseline being the calculated per 62.1
and the proposed being as designed.<br>
<br>
so i submitted a support request to the usgbc and the reply i received is
below, but in short the response is that unless you're using dcv optionally the
outdoor air rates in the baseline and proposed energy simulations for eac1
should be the same. the response below gives the standard responses to
differing outdoor air rate scenarios.<br>
<br>
regards,<br>
patrick<o:p></o:p></span></font><u5:p></u5:p></p>
<p><font size=3 color=black face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>[Fwd: Case 00531150: General LEED Questions<o:p></o:p></span></font><u5:p></u5:p></p>
<p><font size=3 color=black face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>-------- Original Message --------<o:p></o:p></span></font><u5:p></u5:p></p>
<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0>
<tr>
<td nowrap valign=top style='padding:0mm 0mm 0mm 0mm'>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span style='font-size:11.0pt;font-weight:bold'>Subject:
</span></font><u5:p></u5:p></b><font size=3><span style='font-size:12.0pt'><o:p></o:p></span></font></p>
</td>
<td style='padding:0mm 0mm 0mm 0mm'>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:
12.0pt'>Case 00531150: General LEED Questions [ ref:00D49UeD.5004GN692:ref ]<o:p></o:p></span></font><u5:p></u5:p></p>
</td>
</tr>
<tr>
<td nowrap valign=top style='padding:0mm 0mm 0mm 0mm'>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span style='font-size:11.0pt;font-weight:bold'>Date:
</span></font><u5:p></u5:p></b><font size=3><span style='font-size:12.0pt'><o:p></o:p></span></font></p>
</td>
<td style='padding:0mm 0mm 0mm 0mm'>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:
12.0pt'>Mon, 17 Oct 2011 06:54:51 +0000 (GMT)<o:p></o:p></span></font><u5:p></u5:p></p>
</td>
</tr>
<tr>
<td nowrap valign=top style='padding:0mm 0mm 0mm 0mm'>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span style='font-size:11.0pt;font-weight:bold'>From:
</span></font><u5:p></u5:p></b><font size=3><span style='font-size:12.0pt'><o:p></o:p></span></font></p>
</td>
<td style='padding:0mm 0mm 0mm 0mm'>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:
12.0pt'>"No reply GBCI" <a href="mailto:no-reply@gbci.org"><no-reply@gbci.org></a>
<a href="mailto:no-reply@gbci.org"><no-reply@gbci.org></a><o:p></o:p></span></font><u5:p></u5:p></p>
</td>
</tr>
<tr>
<td nowrap valign=top style='padding:0mm 0mm 0mm 0mm'>
<p class=MsoNormal align=right style='text-align:right'><b><font size=2
color=black face=Calibri><span style='font-size:11.0pt;font-weight:bold'>To: </span></font><u5:p></u5:p></b><font
size=3><span style='font-size:12.0pt'><o:p></o:p></span></font></p>
</td>
<td style='padding:0mm 0mm 0mm 0mm'>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:
12.0pt'>patrick@<o:p></o:p></span></font><u5:p></u5:p></p>
</td>
</tr>
</table>
<p><u5:p><font size=3 color=black face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'>Dear Patrick,<br>
<br>
Thank you for contacting the Green Building Certification Institute. <br>
<br>
You ask very good questions related to the relationship between ASHRAE
Standards 62.1 and 90.1, and how these standards are applied across multiple
LEED Rating System prerequisites and credits.<br>
<br>
The simple answer to your question is that, for systems without demand
controlled ventilation, the outdoor air included in EA Credit 1 energy
simulations must be the same in the Baseline and Proposed cases. If the project
is attempting IEQ Credit 2 Increased Ventilation, then the values calculated in
IEQc2 must be used in the EAc1 Basline and Proposed case energy models. Note
that IEQc2 does not limit the project to providing only 30% more outdoor air
than AHRAE 62.1 Ventilation Rate Procedure minimums, so higher amounts are
acceptable, as long as they are modeled identically in both the Baseline and
Proposed case energy models.<br>
<br>
The following generic LEED Review Comment applies to ventilation systems that
do not have demand controlled ventilation:<br>
<br>
It is unclear whether the minimum outside air rates (in CFM) were modeled
identically in the Baseline and Proposed case for all zones not having Demand
Control Ventilation in the Proposed case. Please confirm that minimum outside
airflow (in units of cfm) was modeled identically in the Baseline and Proposed
cases using the proposed case rates. Additionally, please verify that all
systems in both the baseline and proposed case are modeled with zero outside
air flow when fans are cycled on to meet unoccupied setback temperatures unless
health or safety regulations mandate an alternate minimum flow during
unoccupied periods (in which case, the unoccupied outside air rates should be
modeled identically in the Baseline and Proposed case).<br>
<br>
The situation becomes a bit more complicated in you have systems that have
demand controlled ventilation (often implemented as Carbon Dioxide control of
outdoor air or as programmed control of outdoor air based on occupancy
sensors.) In this case the Baseline case energy model must include the minimum
outdoor air as determined by the ASHRAE 62.1 Ventilation Rate Procedure
calculations for all systems having demand controlled ventilation. <br>
<br>
The following generic LEED Review Comment applies to ventilation systems that
do have demand controlled ventilation:<br>
<br>
Demand control ventilation was modeled for credit in the proposed case.
Appendix G allows schedule changes for demand control ventilation as approved
by the rating authority (Table G3.1#4(Baseline)). As the LEED Certification
rating authority, GBCI requires that the outside air ventilation rates for the
Baseline case be modeled using minimum ASHRAE 62.1-2004 (or 2007 for LEED-NC
2009 projects) rates wherever credit is taken for demand control ventilation in
the Proposed case. The proposed case minimum rates at design conditions should
be modeled as designed. Please verify that the Baseline Case model reflects
ASHRAE 62.1-2004 (or 2007) minimum rates for any spaces where credit is taken
for demand control ventilation, or revise the model accordingly. For all other
spaces, please confirm that minimum outside airflow (in units of cfm) was
modeled identically in the Baseline and Proposed cases. Additionally, please
verify that all systems in both the baseline and proposed cases are modeled
with zero outside air flow when fans are cycled on to meet unoccupied setback
temperatures unless health or safety regulations mandate an alternate minimum
flow during unoccupied periods (in which case, the unoccupied outside air rates
should be modeled identically in the Baseline and Proposed case).<br>
<br>
Finally, even though you don't address energy recovery in your question, whether
or not you have energy recovery in your ventilation systems may affect how much
better (or worse) your Proposed case energy models perform in relation to your
Baseline case energy models. <br>
<br>
The following generic LEED Review Comment addresses energy recovery in EAc1
energy models as it relates to ventilation systems.<br>
<br>
Energy recovery is modeled for credit in the Proposed case. Please provide
further information regarding the energy recovery efficiency, verify that
outside air is modeled with zero flow in both the Baseline and Proposed cases
during unoccupied periods when fans are cycled on to meet unoccupied setback
temperatures unless health or safety regulations mandate an alternate minimum
flow during unoccupied periods (in which case, the unoccupied outside air rates
should be modeled identically in the Baseline and Proposed Case), and indicate
the bypass mechanism used to bypass the energy recovery during mild conditions.
<br>
<br>
I hope that helps, but if you have any further questions or concerns, please
feel free to use the contact form at <a href="http://www.gbci.org/contactus">http://www.gbci.org/contactus</a>
and select "Follow up to GBCI Response," inputting your case number
from this email's subject line.<br>
<br>
Best Regards,<br>
<br>
Dan Katzenberger, P.E., CEM, BEMP, LEED-AP BD+C<br>
<br>
Green Building Certification Institute <br>
2101 L Street NW, Suite 500 <br>
Washington, DC 20037 <br>
800-795-1746 (phone)<br>
202 828-5110 (fax) <br>
<a href="http://www.gbci.org/contactus">www.gbci.org/contactus</a><br>
<br>
The text above represents a staff opinion of a particular issue, and does NOT
set any precedent to be upheld during a LEED Certification Review. For official
rulings in advance of a LEED Certification Review, customers should utilize the
Formal Inquiries process available in LEED Online that results in a Project
Credit Interpretation Ruling (Project CIR) and possibly a LEED Interpretation
(formerly CIRs or Public Rulings). Applications for LEED Certification will be
thoroughly reviewed based on USGBC Member balloted and approved LEED Rating
Systems, with addenda, and USGBC approved LEED Interpretations, or Project CIRs
administered by GBCI, as applicable. Please note that certain inquiries
submitted to USGBC are forwarded to GBCI for reply as appropriate.<br>
<br>
<br>
_______________________________<br>
CUSTOMER EMAIL ADDRESS: <br>
patirck@<br>
<br>
CUSTOMER INQUIRY:<br>
I am trying to verify what the minimum outdoor airflow rate required for EAc1
is and am not sure if this requires a CIR. <br>
<br>
If the Proposed outdoor air ventilation is a minimum of 30% higher than the minimum
required by ASHRAE 62 in order to achieve 1 LEED point for credit IEQC2 is the
Baseline outdoor air rate also 30% higher than the minimum required by ASHRAE
62? or would the Baseline outdoor air ventilation rate be the minimum outdoor
air rate per ASHRAE 62 calculations. <br>
<br>
In other words, if ASHRAE 62 requires a minimum of 1,000 CFM of outdoor air,
and 1,300 CFM is provided to attain 1 LEED point via IEQC1, is the Baseline
outdoor air flow rate 1,000 CFM or 1,300 CFM in the energy simulation? <br>
<br>
90.1-2007/2004 both say the minimu m outdoor airflow rates
shall be the same for both the proposed and baseline building designs, as does
the user manual. <br>
<br>
But this logic seems to reward the Proposed simulation by conditioning the
additional outdoor air supplied (300 cfm in the example above) to achieve IEQC1
in the Baseline system as well as the proposed. <br>
<br>
The logic of using the minimum required in the Baseline case is reflected in
EAC1 in the equipment efficiency requirements. Baseline efficiencies are the minimum
required, e.g. SEER 13 for packaged units. <br>
<br>
It is the intent of the requirement that I am not sure is clear. Increasing the
outdoor air ventilation rate increases the energy used to condition the outdoor
air, so if the intent is to put the onus on Proposed design to show energy
reduction/LEED compliance over the 90.1/62 requirements shouldn't the Baseline
outdoor air be the minimum air flow rate per the ASHRAE 62 calculations? This
puts the onus on the design team to provide a design that compensates for the
increase in energy to meet IEQC2 by providing some method of processing the
increase in outdoor air while still reducing energy consumption.<o:p></o:p></span></font><u5:p></u5:p></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 color=black
face=Calibri><span style='font-size:11.0pt;color:windowtext'><br>
<br>
<o:p></o:p></span></font></p>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>From: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>Sandor Rosta
<srosta@swinter.com></span></font><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Date: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>November 16,
2011 11:25:49 AM PST</span></font><font color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>To: </span></span></font></b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext'>"bldg-sim@lists.onebuilding.org"
<bldg-sim@lists.onebuilding.org></span></font><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<div><span style='color:rgba(127, 127, 127, 1.0)'>
<p class=MsoNormal><b><font size=4 color=black face=Helvetica><span
style='font-size:13.5pt;font-family:Helvetica;color:windowtext;font-weight:
bold'>Subject: </span>[Bldg-sim] HELP WANTED: Energy Modeler SWA (NY-CT)</span></font></b><font
color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;color:windowtext'><br>
<br>
<br>
</span></font><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'><o:p></o:p></span></font></p>
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<div link=blue vlink=purple>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'>Steven Winter Associates, Inc. (SWA) seeks a qualified
professional to provide energy analysis for high performance and green
buildings, including multifamily, commercial, and institutional buildings. Work
will primarily focus on energy modeling in eQUEST/Energy Plus. Energy modeling
will support LEED (Leadership in Energy and Environmental Design) projects
nationally, NYSERDA Multifamily Program or New Construction Program projects.
Depending on experience and interest, other opportunities may be available in
energy auditing services and building performance diagnostics. Opening may be
available in either SWA’s New York or Connecticut offices.<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-US style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt'>For more information, view the posting on our web
site:<br>
<a
href="http://www.swinter.com/da44e168-725f-4ea5-9b89-9fd91e8ebb31/about-us-careers-details-nyc.htm">http://www.swinter.com/da44e168-725f-4ea5-9b89-9fd91e8ebb31/about-us-careers-details-nyc.htm</a><o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-US style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><b><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;font-weight:bold'><u5:p> </u5:p></span></font></b><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><b><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;font-weight:bold'>Thanks<u5:p></u5:p></span></font></b><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><b><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;font-weight:bold'>Sandor Rosta<br>
</span></font></b><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'>Senior Mechanical Engineer, LEED AP<b><span
style='font-weight:bold'><br>
</span></b>212.564.5800 x125 (direct)<br>
212.741.8673 (fax)<br>
<a href="mailto:srosta@swinter.com">srosta@swinter.com</a> <u5:p></u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial'><u5:p> </u5:p></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><u5:p><font size=2 color=black face=Calibri><span
lang=EN-US style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'><br>
______________________________________________________________________<br>
This email has been scanned by the MessageLabs Email Security System.<br>
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<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman";color:windowtext'><br>
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