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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>In agreement and in extension of Jeremy/Paul’s thoughts:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>62.1-2007 and 2004 define a “breathing zone” as “the region <u>in
an occupied space</u>…” in the glossary. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Once a space is unoccupied, it ceases to have a breathing zone.
When there’s no breathing zone, per 6.2.6.1, there’s little to discuss ;).<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><u><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Do</span></u><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> provide ventilation for off-gassing. Another good example from
my short experience has been tire storage.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>~Nick<o:p></o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><img width=119 height=37 id="Picture_x0020_1"
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<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Calibri","sans-serif";
color:#CC9900'>PROJECT ENGINEER<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>Smith & Boucher Engineers</span><span style='font-size:7.5pt;
color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>25501 west valley parkway<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>direct 913 344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>fax 913 345.0617<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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;font-family:"Calibri","sans-serif";color:blue'> </span></u><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<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>Paul
Diglio<br>
<b>Sent:</b> Monday, March 14, 2011 8:19 AM<br>
<b>To:</b> Jeremy Poling; Charles Welch; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] ASHRAE 62.1 Unoccupied Vnetilation<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'>Jeremy:<br>
<br>
I don't see anything in 62.1 that implies ventilation is required during the
unoccupied mode.<br>
<br>
I agree that there are off-gassing considerations to be taken into
account. 62.1-2004 had a section that stated, in so many words, that if
there was an accumulation of contaminants during the unoccupied period, the
fans shall be started before occupancy to purge the contaminants. I did
not see this in 62.1-2007, but I do not have a searchable copy, just a cut
& paste from Real-Read.<br>
<br>
Some designers specify a night purge mode to clear the air after the cleaning
crew has left the building in order to purge the air of the cleaning solution
odors.<br>
<br>
62.1-2007, section 6.2.6.1 states that the "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". I take the "required ventilation rates" to mean
those defined in Table 6.1 which is where the CFM per person and the CFM/Ft2 is
defined.<br>
<br>
I would be interested if anyone else on the forum shares your interpretation.<br>
<br>
Paul Diglio<br>
<br>
<br>
<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p>
<div>
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style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
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<p class=MsoNormal style='margin-bottom:12.0pt'><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"'> Jeremy Poling
<Jeremy.Poling@transwestern.net><br>
<b>To:</b> Paul Diglio <paul.diglio@sbcglobal.net>; Charles Welch
<cwelch@capitalreviewgroup.com>; equest-users@lists.onebuilding.org<br>
<b>Sent:</b> Mon, March 14, 2011 12:40:06 AM<br>
<b>Subject:</b> RE: [Equest-users] EMS Control System Modeling</span><o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Paul,</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>I just have a literal viewpoint – I think it is more me
identifying a problem with equivalence in the codes: 90.1 allows cycling of
fans during unoccupied hours but I haven’t seen anything in 62.1 that says you
can turn off the area-based component of the ventilation calculation. I’m
in the position most of the time of either modeling someone else’s design or
reviewing a model built by someone else so this usually becomes a discussion I
have if the model is attempting to take credit for DCV strategies. I
mean, it is very literal, but the basic VRP equation is Ra*Az + Rp*Pz=Vbz and
the only thing that changes over the short-term is Pz, right? The
62.1-2007 User’s Manual on page A-6 points to Section 5.4 and Section 6.2.6.1
that state that ventilation is required whenever zones are occupied. That
said, on page 6-2 the User’s Manual describes the two components of the VRP the
way I mentioned earlier: one for the “occupant-related component” and the other
for the “building area-based component” that is described as “The building
area-based component is intended to dilute sensory contaminants emitting from
materials and furnishings within the space, and from non-occupant activities
and processes taking place within the space.” From my reading, this
agrees that there are sources of IAQ contamination that originate from the
building itself that have nothing to do with the occupancy of the
building. Since the building is present 24/7 it would make sense that it
is generating IAQ contaminants 24/7 and therefore, those contaminants need
dilution over that time. So the math says the answer to the equation
cannot be 0, but in reality this will represent an energy penalty in most
climate zones for a large portion of the year.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Thoughts? I’m definitely okay being proven wrong here, but
I haven’t found anything in the text of the standard that overtly confirms that
no outdoor airflow should be provided during unoccupied times.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
<div>
<p class=MsoNormal><b><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'>Jeremy R. Poling, PE, LEED AP+BDC</span></b><span
style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br>
</span><o:p></o:p></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
<div>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Paul Diglio
[mailto:paul.diglio@sbcglobal.net] <br>
<b>Sent:</b> Friday, March 11, 2011 7:13 PM<br>
<b>To:</b> Jeremy Poling; Charles Welch; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] EMS Control System Modeling</span><o:p></o:p></p>
</div>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'>Jeremy:<br>
<br>
Are you saying that one needs to provide the Az amount of ventilation air
during unoccupied hours? So you model the fans to run 24 X 7 to provide
ventilation?</span><o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'><br>
Paul Diglio</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'> </span><o:p></o:p></p>
<div>
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style='font-size:10.0pt;font-family:"Arial","sans-serif"'>
<hr size=1 width="100%" align=center>
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<p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'> Jeremy Poling
<Jeremy.Poling@transwestern.net><br>
<b>To:</b> Charles Welch <cwelch@capitalreviewgroup.com>;
equest-users@lists.onebuilding.org<br>
<b>Sent:</b> Fri, March 11, 2011 3:03:34 PM<br>
<b>Subject:</b> Re: [Equest-users] EMS Control System Modeling</span><o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Charles,</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>One more thought for your consideration: since the DCV is based
on occupancy, the occupancy schedule is also going to drive it in reality and
in the model (as you’re aware – just stating for the record). Because of
that, the hourly people-schedule is going to drive the results given by the
model. It may make sense to go through and look at that schedule in
detail to be certain it reflects your best understanding of how the spaces will
be occupied. Following on that thought, a very real example of where DCV
can save energy is going to be after hours or during non-peak occupancy times
(for the large conference room spaces, etc.). ASHRAE 62.1-2007 Section
6.2.6 and Section 6.2.7 both will tell you how low your minimum ventilation
rate can go during the unoccupied period.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>A note for everyone who reads this: I’ve been told I take a very
literal read of the code so this may not agree with your understanding of it,
but in my literal view I see Section 6.2.7 allowing you to reduce the value of
Pz in your VRP calculations to 0 during unoccupied times but since Az remains
fixed you are not allowed to reduce the outdoor air down to 0 during unoccupied
times. Explanatory material behind the development of the current
procedures in the standard explains that the VRP calculation has two
components: one to deal with IAQ associated with people-generated contaminants
and one for building-generated contaminants. Regardless of your view on
that, you should be able to arrive at a minimum OA number that is LESS than the
amount specified using peak occupancy or time-averaged occupancy (per 6.2.6).</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>So – in summary: I would double check your occupancy schedule to
make sure it reflects what you are expecting to see in the building and then
double check your minimum OA setting to make sure it will allow the system to
reduce OA when occupancy drops. Also, one possible “exaggeration” may be
viewing it from a system energy perspective or a whole building perspective: if
I leave one zone and go to another and both zones have DCV, then the one I left
will reduce OA and the one I entered will increase OA but the net effect should
be to balance each other out (oversimplified, but the concept is what I was
going for not the math). So when you look at building-level energy
consumption for the ventilation system the individual unit savings will wash
out. The only savings you’ll see are when people leave the building
altogether.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:7.5pt;
font-family:"Arial","sans-serif";color:#1F497D'>Jeremy R. Poling, PE, LEED
AP+BDC</span></b><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><br>
</span><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'>Manager | Sustainability Services</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'>TRANSWESTERN</span><o:p></o:p></p>
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color:#1F497D'>234 W. Florida St.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'>Milwaukee, WI 53204</span><o:p></o:p></p>
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</span><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'>Phone 414.255.3322 | Fax 414.224.7780 | Mobile 414.426.7273</span><o:p></o:p></p>
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color:#1F497D'><a href="mailto:Jeremy.Poling@Transwestern.net" target="_blank">Jeremy.Poling@Transwestern.net</a></span><o:p></o:p></p>
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color:#1F497D'> </span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
<div>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Charles
Welch<br>
<b>Sent:</b> Friday, March 11, 2011 1:14 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] EMS Control System Modeling</span><o:p></o:p></p>
</div>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thank
you very much to those who helped me out with this... Finally made some good
headway.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Quick
question....</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Modeling
the DCV for my location (AZ) I shows only a very small improvement in energy
consumption for my HVAC, does this sound correct?</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I
have always been "led to believe" by the local control companies that
DCV is a huge improvement?</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Myth,
sales "exaggeration", or have some of them found a way to control the
DCV in a manner that I am not modeling correctly? </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Opinions
or pointers appreciated.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>----- Original Message ----- <o:p></o:p></p>
</div>
<blockquote style='border:none;border-left:solid black 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<div>
<p class=MsoNormal style='background:#E4E4E4;background-attachment:scroll;
background-position-x:0%;background-position-y:0%'><b><span style='font-size:
10.0pt;font-family:"Arial","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <a
href="mailto:kwalkerman@gmail.com" target="_blank" title="kwalkerman@gmail.com">Karen
Walkerman</a> </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>To:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <a
href="mailto:MatthewRLarson@eaton.com" target="_blank"
title="MatthewRLarson@eaton.com">MatthewRLarson@eaton.com</a> </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Cc:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <a
href="mailto:GCollins@glumac.com" target="_blank" title="GCollins@glumac.com">GCollins@glumac.com</a>
; <a href="mailto:cwelch@capitalreviewgroup.com" target="_blank"
title="cwelch@capitalreviewgroup.com">cwelch@capitalreviewgroup.com</a> ; <a
href="mailto:equest-users@lists.onebuilding.org" target="_blank"
title="equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>
</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sent:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Wednesday, March 09,
2011 2:48 PM</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Subject:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Re: [Equest-users]
EMS Control System Modeling</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Regarding DCV there are a few things to know:<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>1. demand is based on the number of people in the
space and the outdoor air per person specified at the zone level. If your
outdoor air rate is not entered as a per person air rate, then DCV will not
work properly<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>2. If your fans are not constant volume, ie they can
cycle or they are variable speed, then you need to make sure that the proper
ventilation air is supplied in your base case. Usually, I set the fan
flow to 'variable'. If, in reality, the fans cycle on and off, I change
the fan curve to linear. Then, i set the minimum flow to be equal to the
outdoor air rate fraction. Otherwise, implementing DCV can actually RAISE
energy.<o:p></o:p></p>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<div>
<p class=MsoNormal>On Wed, Mar 9, 2011 at 10:59 AM, <<a
href="mailto:MatthewRLarson@eaton.com" target="_blank">MatthewRLarson@eaton.com</a>>
wrote:<o:p></o:p></p>
<div>
<div>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>Charles,</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>Regarding the
DCV, you need to specify the “Minimum OA Control Method” under the Outdoor Air
tab for the system to state whether the CO2 sensor is in the return or in the
space. Then at the zone level, specify the “Minimum Flow Control” under
the Air Flow tab to state if the minimum OA resets up or down depending on
occupancy level. To ensure the amount of OA going into a space doesn’t go
below the ASHRAE 62.1 minimum, I always input the OA Flow per Person and/or
Flow per Area at the zone level as well. DCV has always been something I’ve
been a little dicey about so any additional suggestions/comments would be
great.</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>Thanks,</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<div>
<p class=MsoNormal><b><span lang=EN-GB style='font-size:10.0pt;color:black'>Matthew
Larson, LEED AP BD+C<br>
</span></b><span lang=EN-GB style='font-size:10.0pt;color:black'>Project
Engineer</span><o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-GB
style='font-size:10.0pt;color:black'>Energy Solutions Group</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:black'>E M C Engineers,
Inc.<br>
Eaton’s Electrical Services & Systems <br>
143 Union Blvd, Suite 350<br>
Lakewood, CO 80228<br>
tel: +1 303 328-3419<br>
mobile: +1 303 668-2511<br>
fax: +1 303 974-1239</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:black'><a
href="mailto:MatthewRLarson@Eaton.com" target="_blank">MatthewRLarson@Eaton.com</a>
<br>
<a href="http://www.eaton.com/energysolutions" target="_blank">www.eaton.com/energysolutions</a>
</span><o:p></o:p></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;color:#1F497D'>Error!
Filename not specified.</span></b><o:p></o:p></p>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<div>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal><b><span style='font-size:10.0pt'>From:</span></b><span
style='font-size:10.0pt'> <a
href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>
[mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org"
target="_blank">equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of
</b>Greg Collins<br>
<b>Sent:</b> Tuesday, March 08, 2011 5:53 PM<br>
<b>To:</b> Charles Welch; <a href="mailto:equest-users@lists.onebuilding.org"
target="_blank">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] EMS Control System Modeling</span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>Charles - A
quick suggestion for the setback is to try setting your system fans to
"cycle on any." Otherwise, your system might not kick on to
maintain setback temperatures. </span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;color:#1F497D'>Greg Collins</span></b><span
style='color:#1F497D'><br>
</span><span style='font-size:10.0pt;color:#1F497D'>GLUMAC | (949) 833-8190</span><o:p></o:p></p>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<div>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal><b><span style='font-size:10.0pt'>From:</span></b><span
style='font-size:10.0pt'> Charles Welch [mailto:<a
href="mailto:cwelch@capitalreviewgroup.com" target="_blank">cwelch@capitalreviewgroup.com</a>]
<br>
<b>Sent:</b> Tuesday, March 08, 2011 4:24 PM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] EMS Control System Modeling</span><o:p></o:p></p>
</div>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'>I am doing an quick estimate
for adding EMS control to an existing HVAC system (schools) which incorporate
the following measures</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'>1) Automatic
thermostat setbacks for building occupation</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'>2) Demand
controlled ventilation</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'>3)
Economizers</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'>Here are my
"challenges"<br>
1) Simulation with setback temperatures shows no reduction in
energy</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'>2) I am
unsure how to handle DCV</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'>3) Simulation
with economizers show very little reduction</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'>I would appreciate any
pointers, suggestions, etc. on what to do here.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'>I would especially appreciate
any example files to see how you input the data to get proper results.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'>Thanks in advance for any
help.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
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</div>
<p class=MsoNormal> <o:p></o:p></p>
</blockquote>
</div>
</div>
</div>
</div>
</div>
</div>
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