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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:red'>“</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:red'>For the record, the occupancy schedule refers to the people present
within the space. For instance, a space within the baseline
(not required by ASHRAE to have DCV) would have the max number of
occupants for the entire occupied-mode schedule; however, the proposed would
have the max number of people for only as many hours
as submitted in the project narrative for FTE usage of the space, and
a minimum number of people (or no one) for the remaining occupied-mode time.
Thus we create an occupancy (people) schedule for the space. During the
unoccupied mode the fans would cycle as required with no people, no
lighting (automatic shut off), acting on the heating & cooling
loads. We would not install DCV if the occupant loads didn't change
during the occupied mode.”<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Ron,
please educate me if I’m reading your email wrong, but are you saying that your
occupancy schedule in the proposed design does not match the baseline design?
This is strictly prohibited in App G I thought… You can change schedules to
take advantage of non-standard ECMs like DCV, and automatic lighting reductions
for the use of occupancy sensors (in rooms NOT already required to have them by
code). But having a conference room 100% occupied from 7am-6pm in the baseline
model and only 100% occupied from 9am-noon in the proposed model is not a valid
way to demonstrate savings from DCV, since there will be energy savings related
to the people latent/sensible production that has nothing to do with DCV. Don’t
you have to create a minimum outside air schedule to demonstrate DCV savings?
If you have received credit for simply reducing the Occupancy Schedule in the proposed
model, that is very interesting…<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thanks!<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>
<div>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:teal'>GHT Limited<br>
</span></b><b><span style='font-size:11.0pt;font-family:"Arial","sans-serif"'><ns0:PersonName><span
style='color:black'>James Hansen</span></ns0:PersonName></span></b><b><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>, PE,
LEED AP<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Senior Associate</span></b><b><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:black'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif"'><ns0:Street><ns0:address><span
style='color:black'>1010 N. Glebe Rd, Suite 200</span></ns0:address></ns0:Street></span><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:7.5pt;font-family:"Arial","sans-serif"'><ns0:place><ns0:City><span
style='color:black'>Arlington</span></ns0:City><span style='color:black'>, </span><ns0:State><span
style='color:black'>VA</span></ns0:State><span style='color:black'> </span><ns0:PostalCode><span
style='color:black'>22201-4749</span></ns0:PostalCode></ns0:place></span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:black'>703-338-5754 (Cell)</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:black'>703-243-1200 (Office)</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:black'>703-276-1376 (Fax)</span><span style='font-size:11.0pt;font-family:
"Calibri","sans-serif";color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:teal'><a href="http://www.ghtltd.com/"><span style='font-size:10.0pt'>www.ghtltd.com</span></a><o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#31849B'><o:p> </o:p></span></b></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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"'> ron lamarre
[mailto:lamarre_arch@yahoo.com] <br>
<b>Sent:</b> Tuesday, July 27, 2010 2:08 PM<br>
<b>To:</b> James Hansen; equest-users<br>
<b>Subject:</b> Re: [Equest-users] Demand Controlled Ventilation and EA Credit
1<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;font-family:"Arial","sans-serif"'>Hi
James:<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>For
the record, the occupancy schedule refers to the people present within the
space. For instance, a space within the baseline (not required
by ASHRAE to have DCV) would have the max number of occupants for the
entire occupied-mode schedule; however, the proposed would have the max number
of people for only as many hours as submitted in the project
narrative for FTE usage of the space, and a minimum number of people (or no
one) for the remaining occupied-mode time. Thus we create an occupancy
(people) schedule for the space. During the unoccupied mode the fans
would cycle as required with no people, no lighting (automatic shut
off), acting on the heating & cooling loads. We would
not install DCV if the occupant loads didn't change during the occupied
mode.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>We
also use general lighting schedules that take advantage of installed occupancy
sensors, and process load schedules that take advantage of Energy Star
computers and monitiors.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>The
HVAC engineer decides the minimum design rate for each space to work (heating
& cooling) if fully occupied with all the lights, process loads, and people
during the occupied mode. This is normally at or above the 62.1 and/or
other code-required minimums (never below due to the LEED pre-requisite).
Sharing the reduction schedules placed into eQuest with a
template-narrative to support the reductions (based on ASHRAE 90.1, Energy
Star, etc... %-reductions) has been accepted by LEED.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>We
utilize an integrated design team method, where the engineers and
I review the models that I construct. We also get peer
reviews when we think it's necessary and/or when LEED throws us a
curve. We pay for our peer reviews. I'm confident that anything
we've submitted does not prove inconsistency within the review
of EAc1.<br>
<o:p></o:p></span></p>
</div>
<div>
<div>
<div>
<div>
<p class=MsoNormal><strong><span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>Ron
Lamarre, AIA, NCARB</span></strong><span style='font-size:10.0pt;font-family:
"Arial","sans-serif"'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>Architect
- <strong><span style='font-family:"Verdana","sans-serif"'>LEED AP BD+C</span></strong></span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
</div>
<div>
<p class=MsoNormal><span class=apple-style-span><b><span style='font-size:7.5pt;
font-family:"Verdana","sans-serif"'>Design + Energy Modeling +
LEED Administration</span></b></span><span style='font-size:10.0pt;font-family:
"Arial","sans-serif"'><o:p></o:p></span></p>
</div>
</div>
</div>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
<hr size=1 width="100%" align=center>
</span></div>
<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"'> James Hansen <JHANSEN@ghtltd.com><br>
<b>To:</b> ron lamarre <lamarre_arch@yahoo.com>; Karen Walkerman
<kwalkerman@gmail.com>; <br>
<b>Sent:</b> Tue, July 27, 2010 12:57:21 PM<br>
<b>Subject:</b> RE: [Equest-users] Demand Controlled Ventilation and EA Credit
1</span><o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:red'>“Each model that I've done for LEED utilizes the same ventilation
rates between the proposed and design; whether it was ASHRAE 62.1 or IMC 2003;
however, the occupancy schedules changed in spaces where DCV was installed.”</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'>Ron, that’s an interesting statement in itself – modifying
occupancy schedules has an impact on the mechanical cooling (not just the
cooling associated with reduced ventilation air), which isn’t really
fair. Was that approved by GBCI? If so, I guess it’s further proof
that there is still a lot of inconsistency in the review of EAc1. </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'>Karen, I think your letter does a good job of requesting an
official “ruling” from the USGBC.</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:11.0pt;font-family:"Arial","sans-serif";
color:teal'>GHT Limited<br>
</span></b><b><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:black'>James Hansen, PE, LEED AP</span></b><o:p></o:p></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Senior Associate</span></b><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:black'>1010 N. Glebe Rd, Suite 200</span><span style='font-size:7.5pt;
font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:black'>Arlington, VA 22201-4749</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:black'>703-338-5754 (Cell)</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:black'>703-243-1200 (Office)</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:black'>703-276-1376 (Fax)</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:teal'><a href="http://www.ghtltd.com/"><span style='font-size:10.0pt'>www.ghtltd.com</span></a></span><o:p></o:p></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#31849B'> </span></b><o:p></o:p></p>
</div>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>
<hr size=1 width="100%" align=center>
</span></div>
<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"'> Karen Walkerman <kwalkerman@gmail.com><br>
<b>To:</b> equest-users <equest-users@lists.onebuilding.org><br>
<b>Sent:</b> Tue, July 27, 2010 12:10:27 PM<br>
<b>Subject:</b> [Equest-users] Demand Controlled Ventilation and EA Credit 1</span><o:p></o:p></p>
<div>
<p class=MsoNormal>All,<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>below is a draft letter to the EA Credit 1 TAG chair.
I welcome any edits, or critiques, and if anyone would like to be a
co-signer of the letter, please let me know.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Thanks,<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>Karen<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>It has come to our attention from a posting on the eQuest
list-serve that a fellow energy-modeling professional has been asked to model
proposed design and baseline design ventilation rates differently where the
proposed design model utilizes demand controlled ventilation. We have
searched the ASHRAE 90.1 documentation as well as the LEED reference
documentation and consistently find the requirement that baseline ventilation
rates be modeled the same as the proposed design, and that credit can be taken
for demand controlled ventilation.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>We understand that large energy savings can be gained from
demand controlled ventilation and that in certain cases, 'gaming' of the system
could result in abnormally high ventilation rates for the baseline design,
while the DCV system keeps ventilation rates low in the proposed design,
however, our main concern is that energy modelers are being made aware of
changes to guidelines during the design review process. At this stage,
the energy modeler has already completed a significant amount of work in
preparing the proposed and baseline design energy models, and all associated
documentation. Changing the baseline design ventilation rates requires
re-modeling of the building and increases the likelihood that the project will
have to challenge a 'rejected' result if the LEED reviewer is not satisfied
with the energy modeler's response and modeling changes.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>We feel that it may be time to develop modeling guidelines
for demand controlled ventilation, and that these guidelines should be
developed, released, and required in a similar fashion to the district energy
guidelines published by LEED for NC 2.2 Furthermore, we feel that any
changes made to EA Credit 1 energy modeling guidelines should be made with
adequate notice to the energy modeling community.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Thank you for your consideration on this issue,<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>Karen Walkerman<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Second Law<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
</div>
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<p class=MsoNormal> <o:p></o:p></p>
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<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:blue'>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
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