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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'>Scott, Nick,<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'>To meet the 90.1 Appendix G <span
class=GramE>requirement</span> for identical minimum outdoor air <span
class=SpellE>flowrates</span>, I enter OUTSIDE-AIR-FLOW <span class=SpellE>cfm</span>
for all zones in both the baseline and proposed models. To get these values, I
will either calculate them based on the design drawings, or get them from the
SV-A reports. I set the Minimum OA Control Method to “Fraction of Design
Flow” so that the fraction of OA increases as a variable air volume
system ramps down.<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'>The idea of adjusting the OA rates between
systems, while creative, does not meet my understanding of the intent of
Appendix G. The proposed model should simulate the actual design as closely as
possible, using as much information as is known about the design. Presumably, the
mechanical designer will calculate minimum OA rates for all zones per code, or ASHRAE
62.1, or both.<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'>To verify that OA rates are actually
identical between baseline and proposed models, I create hourly report blocks
for at least one system to track total system supply air flow rate and ratio of
outside air to total supply 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'>I recently filled out the online LEED
template for credit EAp2 for a LEED 2009 project, and there was a note on one
of the tables that if an ERV is used, the modeler should “verify that
outside air is modeled with zero flow in both cases during unoccupied periods.”
To meet this, I create a minimum air schedule, set to 0% during unoccupied
hours and “999” for all other hours to default to the
program-calculated OA percentage.</span></font><font size=2 color=gray
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:gray'><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'>Regards,<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'>Bill<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><b style='mso-bidi-font-weight:normal'><font size=2
color=black face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;
font-family:"Franklin Gothic Medium Cond";color:black;font-weight:bold;
mso-bidi-font-weight:normal;mso-no-proof:yes'>William Bishop, EIT, BEMP, LEED<sup>®</sup>
AP </span></font></b><b style='mso-bidi-font-weight:normal'><font size=2
color="#006600" face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;
font-family:"Franklin Gothic Medium Cond";color:#006600;font-weight:bold;
mso-bidi-font-weight:normal;mso-no-proof:yes'>|</span></font></b><b
style='mso-bidi-font-weight:normal'><font size=2 color=black
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-bidi-font-weight:
normal;mso-no-proof:yes'> </span></font></b><b style='mso-bidi-font-weight:
normal'><font size=2 color=black face="Franklin Gothic Medium Cond"><span
style='font-size:10.0pt;mso-bidi-font-size:11.0pt;font-family:"Franklin Gothic Medium Cond";
color:black;font-weight:bold;mso-bidi-font-weight:normal;mso-no-proof:yes'>Pathfinder
Engineers & Architects LLP</span></font></b><b><font size=2 color=black
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-no-proof:yes'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;font-family:Arial;color:black;mso-no-proof:yes'>Mechanical Engineer<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
5.0pt;font-family:Arial;color:black;mso-no-proof:yes'><o:p> </o:p></span></font></p>
<p class=MsoNormal><st1:address
style="BACKGROUND-IMAGE: url(res://ietag.dll/#34/#1001); BACKGROUND-REPEAT: repeat-x; BACKGROUND-POSITION: left bottom"
tabIndex="0" w:st="on"><st1:Street w:st="on"><font size=1 color=navy
face=Arial><span style='font-size:9.0pt;font-family:Arial;color:navy;
mso-no-proof:yes'>134 South Fitzhugh Street</span></font></st1:Street><font
size=1 color=navy><span style='font-size:9.0pt;color:navy;mso-no-proof:yes'><br>
</span></font><st1:City w:st="on"><font size=1 color=navy face=Arial><span
style='font-size:9.0pt;font-family:Arial;color:navy;mso-no-proof:yes'>Rochester</span></font></st1:City><font
size=1 color=navy face=Arial><span style='font-size:9.0pt;font-family:Arial;
color:navy;mso-no-proof:yes'>, <st1:State w:st="on">NY</st1:State> <st1:PostalCode
w:st="on">14608</st1:PostalCode></span></font></st1:address><font size=1
color=navy><span style='font-size:9.0pt;color:navy;mso-no-proof:yes'><br>
</span></font><font size=1 color=navy face=Arial><span style='font-size:9.0pt;
font-family:Arial;color:navy;mso-no-proof:yes'>T: (585) 325-6004 </span></font><font
size=1 color=black face=Arial><span style='font-size:9.0pt;font-family:Arial;
color:black;mso-no-proof:yes'>Ext. 114</span></font><font size=1 color=navy><span
style='font-size:9.0pt;color:navy;mso-no-proof:yes'><br>
</span></font><font size=1 color=navy face=Arial><span style='font-size:9.0pt;
font-family:Arial;color:navy;mso-no-proof:yes'>F: (585) 325-6005</span></font><font
size=1 color=black face=Arial><span style='font-size:9.0pt;mso-bidi-font-size:
12.0pt;font-family:Arial;color:black;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;font-family:Arial;color:black;mso-no-proof:yes'>wbishop@pathfinder-ea.com<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;mso-bidi-font-size:11.0pt;font-family:Arial;color:black;mso-no-proof:
yes'>www.pathfinder-ea.com</span></font><font size=3 color=navy
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman";
color:navy;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=5 color=green face=Webdings><span
style='font-size:18.0pt;font-family:Webdings;mso-bidi-font-family:Webdings;
color:green;mso-no-proof:yes'>P</span></font><font color=green><span
style='color:green;mso-no-proof:yes'> </span></font><font size=1 color=green><span
style='font-size:7.5pt;color:green;mso-no-proof:yes'>May is National Bike
Month. Bike to Work Day May 21<sup>st</sup>.</span></font><font color=green><span
style='color:green'><o:p></o:p></span></font></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Nick Caton<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, May 26, 2010
11:31 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Tomlinson, Scott;
equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Equest-users] eQuest
- outside air heating issues</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>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>Hey Scott,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>To be frank, I haven’t yet modeled
any LEED projects that would use systems 5+, so I have no direct experience to
relate. That said, if I were in an omniscient USGBC reviewer’s
shoes, and you presented this method of matching ventilation rates, I would
check that the design OA rates for each floor are roughly matching the proposed
values and design documents. The practice to specify MIN-OA-RATIO’s
at the system level to start, then tweaking as necessary has (for me) turned
out to be the most efficient way I’ve found of (1) getting the baseline
quantities to start in the right vicinity relative to the proposed, and (2)
maintain an equal distribution of the OA to each zone. As you point out,
it’s on us to not bend the rules and redistribute the OA in a way that is
advantageous… <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>Off the top of my head, I think for
baseline systems 5+, I would follow the same basic procedure, using
MIN-OA-RATIO’s from the proposed to get a starting point. For step
5, it may be appropriate to use a zonal method to specify/tweak the resulting
ventilation rates to match, it would depend on the project-at-hand. On
the other hand, MIN-OA-RATIO may still be a viable option if the modeler will pay
mind as you say to treat each floor/system separately and not to simply match
the gross values for the building.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>I have not received any USGBC commentary
raising issues with this approach – as a simple disclaimer: that’s
not to say it has actually been scrutinized!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>I’d love to hear others share
their approaches if you have a “normal” procedure… I’m
sure there’s a variety out there and we might all learn something =).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>~Nick<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><img width=119 height=37
id="_x0000_i1027" src="cid:image001.jpg@01CAFCC7.929C03B0"
alt="cid:489575314@22072009-0ABB"></span></font><b><font color="#2d4d5e"
face="Stylus BT"><span style='font-family:"Stylus BT";color:#2D4D5E;font-weight:
bold'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color="#2d4d5e" face="Stylus BT"><span
style='font-size:11.0pt;font-family:"Stylus BT";color:#2D4D5E;font-weight:bold'><o:p> </o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color="#2d4d5e" face="Stylus BT"><span
style='font-size:11.0pt;font-family:"Stylus BT";color:#2D4D5E;font-weight:bold'>NICK
CATON, E.I.T.</span></font></b><b><font size=3 color="#2d4d5e" face="Stylus BT"><span
style='font-size:12.0pt;font-family:"Stylus BT";color:#2D4D5E;font-weight:bold'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=1 color="#cc9900" face=Calibri><span
style='font-size:7.5pt;color:#CC9900'>PROJECT ENGINEER</span></font><font
size=1 color="#cc9900" face="Times New Roman"><span style='font-size:7.5pt;
font-family:"Times New Roman";color:#CC9900'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#2d4d5e" face=Calibri><span
style='font-size:10.0pt;color:#2D4D5E'>25501 west valley parkway<o:p></o:p></span></font></p>
<p class=MsoNormal><st1:City w:st="on"><st1:place w:st="on"><font size=2
color="#2d4d5e" face=Calibri><span style='font-size:10.0pt;color:#2D4D5E'>olathe</span></font></st1:place></st1:City><font
size=2 color="#2d4d5e"><span style='font-size:10.0pt;color:#2D4D5E'> ks 66061<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#2d4d5e" face=Calibri><span
style='font-size:10.0pt;color:#2D4D5E'>direct 913 344.0036<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#2d4d5e" face=Calibri><span
style='font-size:10.0pt;color:#2D4D5E'>fax 913 345.0617<o:p></o:p></span></font></p>
<p class=MsoNormal><i><font size=2 color="#2d4d5e" face=Calibri><span
style='font-size:10.0pt;color:#2D4D5E;font-style:italic'>Check out our new
web-site @ </span></font></i><font color="#1f497d"><span style='color:#1F497D'><a
href="www.smithboucher.com" title="blocked::www.smithboucher.com"><font size=2><span
style='font-size:10.0pt'>www.smithboucher.com</span></font></a></span></font><u><font
size=2 color=blue><span style='font-size:10.0pt;color:blue'> </span></font></u><font
color="#1f497d"><span style='color:#1F497D'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Tomlinson, Scott
[mailto:stomlinson@smma.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, May 26, 2010
10:12 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Nick Caton;
equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Equest-users] eQuest
- outside air heating issues<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>Nick,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>First off, thanks for the reply.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>If I am understanding you correctly,
your method is getting the total OA of each model to match up, and you are
doing this at the system level for both the design and baseline buildings.
This differs from my method, where I am trying to get the OA rates to
match up for each zone of the two models.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>Your method would seem to work for a
baseline system type 1, 2, 3 or 4, where each thermal block needs to be modeled
as a separate system, but for a system 5, 6, 7 or 8 (where each floor of the
baseline building needs to be modeled with a separate HVAC system) I would
think you would have difficulty getting things to match up. When you work
on these higher system types, and you are modifying the OA ratios of your
baseline systems, do you do it equally for all the systems? If not, I
would think this could give you some freedom the ‘game’ your
baseline model in a way that USGBC would not approve of. I’m not
saying you personally would do this, let me use my current model as an example.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>My current building is a 3 story system
8 school. The design building has some AHUs (about 25% OA), some ERUs
(100% OA) and some UHs (0% OA). Now, using my method of entering the OA
at the zone level in the baseline building things are working out that I need
energy recovery in the first floor HVAC system, but not the second or third
floor systems. If I use your method of getting the total building OA
rates to match (and if I am understanding it correctly), what would stop me
from taking some of the OA from the first floor system and transferring it to
the second are third floor systems so I can get all three systems under the
requirements for energy recovery, and provide myself some artificially inflated
energy savings, while keeping my total building OA rates equal? In my
very limited feedback from USGBC it seems like they don’t like letting
the modeler have such freedoms.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>Have you ever had any issues with USGBC
using your method?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=msolistparagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;mso-fareast-font-family:
Calibri;mso-bidi-font-family:Calibri;color:#1F497D'><span style='mso-list:Ignore'>-<font
size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font color="#1f497d"><span
style='color:#1F497D'>Scott<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Nick Caton
[mailto:ncaton@smithboucher.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, May 26, 2010
10:04 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Tomlinson, Scott;
equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Equest-users] eQuest
- outside air heating issues<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>Scott, <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>I want to say off the bat that you
actually are asking a very good and fundamental question: What is a
“best practice” for matching baseline ventilation air rates to the
proposed model? <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>My general processes is:<o:p></o:p></span></font></p>
<p class=msolistparagraph style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><font
size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;mso-fareast-font-family:
Calibri;mso-bidi-font-family:Calibri;color:#1F497D'><span style='mso-list:Ignore'>1.<font
size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font color="#1f497d"><span
style='color:#1F497D'>where I’ll build a proposed model to match the
drawings/schedules, address anything that results in odd results/ warnings /
unmet hours.<o:p></o:p></span></font></p>
<p class=msolistparagraph style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><font
size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;mso-fareast-font-family:
Calibri;mso-bidi-font-family:Calibri;color:#1F497D'><span style='mso-list:Ignore'>2.<font
size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font color="#1f497d"><span
style='color:#1F497D'>Build the baseline – clear out any zone/system
level OA inputs to autosize, then <o:p></o:p></span></font></p>
<p class=msolistparagraph style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><font
size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;mso-fareast-font-family:
Calibri;mso-bidi-font-family:Calibri;color:#1F497D'><span style='mso-list:Ignore'>3.<font
size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font color="#1f497d"><span
style='color:#1F497D'>For each airside system, enter the 1.15/1.25 oversizing
parameters and a “MIN-OA-RATIO” at the system level to match the
corresponding proposed design model’s system ratio<o:p></o:p></span></font></p>
<p class=msolistparagraph style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><font
size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;mso-fareast-font-family:
Calibri;mso-bidi-font-family:Calibri;color:#1F497D'><span style='mso-list:Ignore'>4.<font
size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font color="#1f497d"><span
style='color:#1F497D'>Run both simulations and compare results for ventilation
air to determine if things are way off (and they have been) – I use the
SV-A reports and excel for this comparison<o:p></o:p></span></font></p>
<p class=msolistparagraph style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><font
size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;mso-fareast-font-family:
Calibri;mso-bidi-font-family:Calibri;color:#1F497D'><span style='mso-list:Ignore'>5.<font
size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font color="#1f497d"><span
style='color:#1F497D'>Tweak baseline systems’ OA-RATIOs as required up or
down to make the total ventilation air sync with the proposed
model’s. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>Following this procedure, which I
document for model review, the design system OA sums between the baseline
model, proposed model, and construction documents are typically very close to
each other, if not perfectly in sync.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>Is this a procedure others are following
or is there a simpler way?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>To the rest of your email…
Different systems will use different amounts/types of energy for the same
amount of load (OA). Your baseline model’s tripling of gas
consumption isn’t something I’d immediately discount as
unreasonable, but worth reviewing to find something you may have missed –
perhaps lowering CFM’s are the culprit? In some cases, the core
“secret” to surprisingly outstanding proposed/baseline performance
is getting lucky with a terrible baseline… the prescriptive
requirements, by their nature, can be close to or far from “a good
idea” for any given project/site.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>~Nick<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><img border=0 width=119 height=37
id="_x0000_i1025" src="cid:image001.jpg@01CAFCC7.929C03B0"
alt="cid:489575314@22072009-0ABB"></span></font><b><font color="#2d4d5e"
face="Stylus BT"><span style='font-family:"Stylus BT";color:#2D4D5E;font-weight:
bold'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color="#2d4d5e" face="Stylus BT"><span
style='font-size:11.0pt;font-family:"Stylus BT";color:#2D4D5E;font-weight:bold'><o:p> </o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color="#2d4d5e" face="Stylus BT"><span
style='font-size:11.0pt;font-family:"Stylus BT";color:#2D4D5E;font-weight:bold'>NICK
CATON, E.I.T.</span></font></b><b><font size=3 color="#2d4d5e" face="Stylus BT"><span
style='font-size:12.0pt;font-family:"Stylus BT";color:#2D4D5E;font-weight:bold'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=1 color="#cc9900" face=Calibri><span
style='font-size:7.5pt;color:#CC9900'>PROJECT ENGINEER</span></font><font
size=1 color="#cc9900" face="Times New Roman"><span style='font-size:7.5pt;
font-family:"Times New Roman";color:#CC9900'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#2d4d5e" face=Calibri><span
style='font-size:10.0pt;color:#2D4D5E'>25501 west valley parkway<o:p></o:p></span></font></p>
<p class=MsoNormal><st1:City w:st="on"><st1:place w:st="on"><font size=2
color="#2d4d5e" face=Calibri><span style='font-size:10.0pt;color:#2D4D5E'>olathe</span></font></st1:place></st1:City><font
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<p class=MsoNormal><font size=2 color="#2d4d5e" face=Calibri><span
style='font-size:10.0pt;color:#2D4D5E'>direct 913 344.0036<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#2d4d5e" face=Calibri><span
style='font-size:10.0pt;color:#2D4D5E'>fax 913 345.0617<o:p></o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org]
<b><span style='font-weight:bold'>On Behalf Of </span></b>Tomlinson, Scott<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, May 26, 2010 8:35
AM<br>
<b><span style='font-weight:bold'>To:</span></b>
equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Equest-users] eQuest -
outside air heating issues<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Hello
all,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>I
have a question regarding outside air input. For my design building I
enter my outside air at the system level, as the minimum outside air ratio,
which I get from my equipment schedules. 90.1 requires that the outside
airflow be the same. To do this I take my summary report from my design
building and enter the values from that report into the baseline model
zones. When I run my baseline model the outside airflow rates from the
summary report match those of my design model, and my unmet heating hours are
good in both models, but the heating gas consumption in my baseline building
triples. The result is I am getting great, but unrealistic, energy
savings.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Does
anyone know why this is happening? Why would entering the OA at the zone
level cause such increased heating for the save total CFM entered at the system
level? How are you folks typically handling your outside ventilation air.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Any
help would be greatly appreciated, thank you.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=silver face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:silver'>__________________________________________<o:p></o:p></span></font></p>
</td>
</tr>
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<td colspan=3 style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:black;font-weight:bold'>Scott Tomlinson,
PE, LEED-AP</span></font></b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:black'><o:p></o:p></span></font></p>
</td>
</tr>
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<p class=MsoNormal><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:black'>Mechanical<o:p></o:p></span></font></p>
</td>
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<p class=MsoNormal><b><font size=2 color="#004040" face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:#004040;font-weight:bold'>Symmes
Maini & McKee Associates, Inc.</span></font></b><font size=2
color="#004040" face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:#004040'><o:p></o:p></span></font></p>
</td>
</tr>
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<td colspan=3 style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><st1:address w:st="on"><st1:Street w:st="on"><font size=2
color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:black'>1000 Massachusetts Avenue</span></font></st1:Street><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:
Tahoma;color:black'>, <st1:City w:st="on">Cambridge</st1:City>, <st1:State
w:st="on">MA</st1:State> <st1:PostalCode w:st="on">02138</st1:PostalCode></span></font></st1:address><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:
Tahoma;color:black'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:black'>t: 617.520.9438<o:p></o:p></span></font></p>
</td>
<td width=100 nowrap rowspan=4 style='width:75.0pt;padding:0in 0in 0in 0in'>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman"'><img border=0
width=63 height=64 id="Picture_x005f_x0020_1"
src="cid:image002.jpg@01CAFCC7.929C03B0"
alt="http://intranet/Images/USGBC.jpg"><o:p></o:p></span></font></p>
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<td width=200 nowrap rowspan=4 style='width:150.0pt;padding:0in 0in 0in 0in'>
<p class=MsoNormal><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>
</td>
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<td style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:black'>f: 617.354.5758<o:p></o:p></span></font></p>
</td>
</tr>
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<td style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:black'><a
href="mailto:STomlinson@smma.com">stomlinson@smma.com</a><o:p></o:p></span></font></p>
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<td style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:black'><a
href="http://www.smma.com/">www.smma.com</a><o:p></o:p></span></font></p>
</td>
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