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<div class=Section1>
<p class=MsoNormal><span style='color:#1F497D'>Folks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I went thru and entered all my
ventilation air at the zone level for both design and baseline systems and they
are matching up, but unfortunately this wasn’t my issue. I am still
getting unreasonably high gas savings, actually I think it is my design gas use
that is low, not my baseline design that is high.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I have my design model pretty
much put together, so to create my baseline system I take a copy of my design
building and modify this. My design AHUs are VAV with hot water reheat,
and so are my baseline AHUs, so I modify 3 of the design AHUs into the baseline
AHUs that will be serving each of my 3 floors (I’ve tried copying new
AHUs and creating new AHUs from scratch at this step as well). I clear
out the CFMs and coil capacities to allow autosizing, and I redesign ate all my
zones to the proper baseline AHUs. It is this step that is causing
problems. For some reason going from 16 smaller systems to 3 larger
systems causes my gas consumption to increase by a factor of 4.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>My unmet hours for both models
are within reason, I’m just using a bunch less gas in the design building
for some reason. Why looking thru the output report I noticed
something. My baseline building isn’t generating SS-P reports for
some reason. I’m not sure if this is an indicator of something. Any
thoughts would be appreciated.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l2 level1 lfo5'><![if !supportLists]><span
style='color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='color:#1F497D'>Scott<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Bishop, Bill
[mailto:wbishop@pathfinder-ea.com] <br>
<b>Sent:</b> Wednesday, May 26, 2010 11:36 AM<br>
<b>To:</b> Nick Caton; Tomlinson, Scott; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> RE: [Equest-users] eQuest - outside air heating issues<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Scott, Nick,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>To meet the 90.1 Appendix G requirement for identical minimum
outdoor air flowrates, I enter OUTSIDE-AIR-FLOW cfm 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></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
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></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
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></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
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><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Bill<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:black'>William Bishop, EIT, BEMP, LEED<sup>®</sup> AP </span></b><b><span
style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:#006600'>|</span></b><b><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:black'> </span></b><b><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:black'>Pathfinder Engineers & Architects LLP</span></b><b><span
style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond","sans-serif";
color:black'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:black'>Mechanical Engineer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:5.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:navy'>134 South Fitzhugh Street</span><span style='font-size:9.0pt;
color:navy'><br>
</span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:navy'>Rochester, NY 14608</span><span style='font-size:9.0pt;color:navy'><br>
</span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:navy'>T: (585) 325-6004 </span><span style='font-size:9.0pt;font-family:
"Arial","sans-serif";color:black'>Ext. 114</span><span style='font-size:9.0pt;
color:navy'><br>
</span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:navy'>F: (585) 325-6005</span><span style='font-size:9.0pt;font-family:
"Arial","sans-serif";color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:black'>wbishop@pathfinder-ea.com<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:black'>www.pathfinder-ea.com</span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif";color:navy'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:18.0pt;font-family:Webdings;
color:green'>P</span><span style='color:green'> </span><span style='font-size:
7.5pt;color:green'>May is National Bike Month. Bike to Work Day May 21<sup>st</sup>.</span><span
style='color:green'><o:p></o:p></span></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<hr size=2 width="100%" align=center>
</span></div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Nick
Caton<br>
<b>Sent:</b> Wednesday, May 26, 2010 11:31 AM<br>
<b>To:</b> Tomlinson, Scott; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] eQuest - outside air heating issues</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Hey Scott,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>To 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></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='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></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='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></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='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></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>~Nick<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='color:#1F497D'><img width=119 height=37
id="_x0000_i1027" src="cid:image001.jpg@01CAFE44.11148870"
alt="cid:489575314@22072009-0ABB"></span><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-size:12.0pt;
font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;color:#CC9900'>PROJECT ENGINEER</span><span
style='font-size:7.5pt;font-family:"Times New Roman","serif";color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>25501 west
valley parkway<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>direct 913
344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>fax 913
345.0617<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;color:#2D4D5E'>Check out
our new web-site @ </span></i><span style='color:#1F497D'><a
href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span
style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span
style='font-size:10.0pt;color:blue'> </span></u><span style='color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Tomlinson, Scott
[mailto:stomlinson@smma.com] <br>
<b>Sent:</b> Wednesday, May 26, 2010 10:12 AM<br>
<b>To:</b> Nick Caton; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> RE: [Equest-users] eQuest - outside air heating issues<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Nick,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>First off, thanks for the reply.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>If 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></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='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></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='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></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Have you ever had any issues
with USGBC using your method?<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=msolistparagraph0 style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='color:#1F497D'>Scott<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Nick Caton
[mailto:ncaton@smithboucher.com] <br>
<b>Sent:</b> Wednesday, May 26, 2010 10:04 AM<br>
<b>To:</b> Tomlinson, Scott; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> RE: [Equest-users] eQuest - outside air heating issues<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Scott, <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>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></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>My general processes is:<o:p></o:p></span></p>
<p class=msolistparagraph0 style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><span
style='color:#1F497D'><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><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></p>
<p class=msolistparagraph0 style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><span
style='color:#1F497D'><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='color:#1F497D'>Build the baseline
– clear out any zone/system level OA inputs to autosize, then <o:p></o:p></span></p>
<p class=msolistparagraph0 style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><span
style='color:#1F497D'><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><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></p>
<p class=msolistparagraph0 style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><span
style='color:#1F497D'><span style='mso-list:Ignore'>4.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><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></p>
<p class=msolistparagraph0 style='text-indent:-.25in;mso-list:l1 level1 lfo4'><![if !supportLists]><span
style='color:#1F497D'><span style='mso-list:Ignore'>5.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><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></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='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></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Is this a procedure others are
following or is there a simpler way?<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>To 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></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>~Nick<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='color:#1F497D'><img border=0 width=119
height=37 id="_x0000_i1025" src="cid:image001.jpg@01CAFE44.11148870"
alt="cid:489575314@22072009-0ABB"></span><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-size:12.0pt;
font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;color:#CC9900'>PROJECT ENGINEER</span><span
style='font-size:7.5pt;font-family:"Times New Roman","serif";color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>25501 west
valley parkway<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>direct 913
344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>fax 913
345.0617<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;color:#2D4D5E'>Check out
our new web-site @ </span></i><span style='color:#1F497D'><a
href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span
style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span
style='font-size:10.0pt;color:blue'> </span></u><span style='color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Tomlinson,
Scott<br>
<b>Sent:</b> Wednesday, May 26, 2010 8:35 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] eQuest - outside air heating issues<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hello all,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>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></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>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></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Any help would be greatly appreciated, thank you.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<table class=MsoNormalTable border=0 cellpadding=0>
<tr>
<td colspan=3 style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:silver'>__________________________________________<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td colspan=3 style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:black'>Scott Tomlinson, PE, LEED-AP</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td colspan=3 style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:black'>Mechanical<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td colspan=3 style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#004040'>Symmes Maini & McKee Associates, Inc.</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#004040'><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td colspan=3 style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:black'>1000 Massachusetts Avenue, Cambridge, MA 02138<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td width=175 nowrap style='width:131.25pt;padding:0in 0in 0in 0in'>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:black'>t: 617.520.9438<o:p></o:p></span></p>
</td>
<td width=100 nowrap rowspan=4 style='width:75.0pt;padding:0in 0in 0in 0in'>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><img
border=0 width=63 height=64 id="Picture_x005f_x0020_1"
src="cid:image002.jpg@01CAFE44.11148870"
alt="http://intranet/Images/USGBC.jpg"><o:p></o:p></span></p>
</td>
<td width=200 nowrap rowspan=4 style='width:150.0pt;padding:0in 0in 0in 0in'>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:black'>f: 617.354.5758<o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:black'><a href="mailto:STomlinson@smma.com">stomlinson@smma.com</a><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:black'><a href="http://www.smma.com/">www.smma.com</a><o:p></o:p></span></p>
</td>
</tr>
</table>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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