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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Mike – Like Robby, I have a mix-mode building and am
trying to determine how to document the savings for LEED-NC credit EA1. The
only CIR I can find on the USGBC website that has to do with natural
ventilation energy savings is from 3/22/2007, is this the CIR you were
referring to? <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The project team in that CIR was proposing to use EnergyPlus,
which I hear is a better natural ventilation simulation engine. Has
anyone out there had success using eQuest (DOE2.2) for a LEED energy submittal
taking credit for natural ventilation? I realize it would most likely
require some work using the Exceptional Calculation Method as per the backup
option proposed in the CIR I referenced, but I believe there would have to be a
simulation done at some point. I’m just wondering if I’m
wasting my time to try and do this portion of the documentation with eQuest (I
hope not since my model is started in eQuest already and I don’t have any
experience with EnergyPlus) or if eQuest has been accepted as an adequate tool
for natural ventilation simulation by the USGBC.<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'>I have a copy of the CIBSE publication you mentioned and am
working my way through it to provide the best documentation possible. I
am only assuming at this point that an hourly simulation is required, but I don’t
see any other way, even with the use of the equations found in chapter 4 of the
CIBSE book.<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'>Any help or ideas are much appreciated.<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'>Thank You,<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><span style='font-size:14.0pt;font-family:Cheltenham;
color:#A0002F'> </span><span style='font-size:18.0pt;font-family:Cheltenham;
color:#A0002F'>Dan Russell, EIT <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:Cheltenham;
color:#A0002F'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:Cheltenham;
color:#A0002F'><img width=200 height=174 id="Picture_x0020_1"
src="cid:image001.jpg@01C86CC5.614C3300"
alt="cid:image001.jpg@01C840A4.E711B250"></span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></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"'>
bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Michael Tillou<br>
<b>Sent:</b> Wednesday, January 02, 2008 1:19 PM<br>
<b>To:</b> 'Robby Oylear'; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] Mixed Mode Ventilation in eQUEST<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:blue'>Robby,</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>If your project is seeking LEED certification and you want to claim
credit for the Natural Ventilation under EA-1, I reccomend that you get the
book "Natural ventilation in non-domestic buildings" published by the
CIBSE and the Carbon Trust. USGBC requires a rigourous analysis of
your natural ventilation modeling results before granting any EA-1 credit
and this reference will help you navigate that. You should also read the
CIR regarding natural ventilation energy savings on the USGBC website.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Mike</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial Black","sans-serif"'>Michael
Tillou, PE, LEED</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial Black","sans-serif"'>Tillou
Engineering, LLC</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial Black","sans-serif"'>Williamstown,
MA 01267</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial Black","sans-serif"'>P:
413-458-9870</span> <span style='font-size:7.5pt;font-family:"Arial Black","sans-serif"'>C:
413-652-1087</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" align=center>
</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"'> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Robby
Oylear<br>
<b>Sent:</b> Wednesday, January 02, 2008 1:28 PM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Mixed Mode Ventilation in eQUEST</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hi
all,<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"'>I’m
working on an energy model for a project that is very interested in
incorporating a mixed mode ventilation scheme. The mixed mode would
operate in an on/off red light green light method where the mechanical cooling
would shut down during hours when the outdoor air temperature could meet the
space cooling loads and the mechanical system would run its relief fan in order
to pull air into the space. It would be up to the occupants to open the
operable windows. <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"'>I’ve
been through the basic options for natural ventilation in eQUEST and it
doesn’t look like what’s available in eQUEST is going to work for
the PIU system I have in the building right now. I’m thinking it will
have to involve some sort of schedule modification to turn off the perimeter
VAV box fans during hours when the loads could be met by the natural
ventilation. I could make the schedule based on BIN calc information for
Seattle. This would involve a lot of fine tuning though and it would be
questionable whether I could still keep the unmet load hours under 300.
To simulate the operable windows modifications could be made to the
infiltration values at the perimeter spaces.<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"'>If
anyone has had any success with mixed mode ventilation or has any ideas towards
this it would be much appreciated.<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-family:"Franklin Gothic Demi"'>Robby
Oylear</span><span style='font-size:11.0pt;font-family:"Franklin Gothic Demi"'><o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt'>Project Engineer<o:p></o:p></span></i></p>
<p class=MsoNormal><span style='font-size:10.0pt'>direct: 206.788.4571<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt'>cell: 206.354.2721</span><o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:3.0pt'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif"'><a href="http://www.rushingco.com/"
title="blocked::http://www.rushingco.com/"><span style='color:windowtext;
text-decoration:none'>www.rushingco.com</span></a><o:p></o:p></span></p>
<p class=MsoNormal style='margin-bottom:3.0pt'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif"'><img border=0 width=96 height=41
id="_x0000_i1026" src="cid:image002.jpg@01C86CC5.614C3300"><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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