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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The hoods are more “effective”
really, not more efficient. They have no fans, but are designed to effectively
remove fumes with a lower flow rate through them. All the hoods are connected
to a central exhaust fan system.<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'>Now that you mention it, I guess I need to
go back and add fan energy in my baseline. The baseline has several systems
(one per zone as required in 90.1) where the proposed only has two air handlers
and a common exhaust fan. I will add a return fan with Pfan power (per
G3.1.2.9) for every system that serves a zone that, in the proposed design, is connected
to the common exhaust.<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'>Bill<o:p></o:p></span></font></p>
<div>
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face="Times New Roman"><span style='font-size:12.0pt'>
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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'> Michael Tillou
[mailto:michael.tillou@gmail.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, November 07, 2008
2:53 PM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">Bishop,
Bill</st1:PersonName>; bldg-sim@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Bldg-sim] Exhaust,
outside air and infiltration for LEED</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>You are correct that Appendix G requires
outside air to be the same for both as-designed and baseline models. You
would not be able to claim savings for reduced ventilation airflow from a more
efficient fume hood. Similarly you cannot claim credit for
reduced ventilation airflow on displacement ventilation and UFAD systems. </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>However I see no reason why you wouldn't
be able to claim the fan energy savings associated with a more efficient
fume hood.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Mike</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Arial Black"><span style='font-size:10.0pt;
font-family:"Arial Black"'>Michael Tillou, PE, LEED</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face="Arial Black"><span style='font-size:10.0pt;
font-family:"Arial Black"'>Tillou Engineering, LLC</span></font><o:p></o:p></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=1
face="Arial Black"><span style='font-size:7.5pt;font-family:"Arial Black"'>Williamstown</span></font></st1:City><font
size=1 face="Arial Black"><span style='font-size:7.5pt;font-family:"Arial Black"'>,
<st1:State w:st="on">MA</st1:State> <st1:PostalCode w:st="on">01267</st1:PostalCode></span></font></st1:place><o:p></o:p></p>
<p class=MsoNormal><font size=1 face="Arial Black"><span style='font-size:7.5pt;
font-family:"Arial Black"'>P: 413-458-9870</span></font> <font size=1
face="Arial Black"><span style='font-size:7.5pt;font-family:"Arial Black"'>C:
413-652-1087</span></font><o:p></o:p></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><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'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b><st1:PersonName w:st="on">Bishop, Bill</st1:PersonName><br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, November 07, 2008
9:04 AM<br>
<b><span style='font-weight:bold'>To:</span></b> bldg-sim@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] Exhaust,
outside air and infiltration for LEED</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The mechanical engineer for a campus laboratory building
with 100% OA wants to claim energy savings for reduced exhaust from more
efficient fume hoods. (Established design practice uses hoods with 100 fpm flow
– they are installing 70 fpm hoods. This reduces peak exhaust from 700 to
490 CFM per hood.) My approach has always been to keep outside air, exhaust and
infiltration flows identical between the proposed and baseline models (except
for DCV). (This was not easy for this model with proposed VAV and baseline
constant volume packaged rooftops.)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Has anybody successfully claimed OA/exhaust/infiltration
savings for a LEED project?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Bill<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><b><font size=2 color=black face="Franklin Gothic Medium"><span
style='font-size:10.0pt;font-family:"Franklin Gothic Medium";color:black;
font-weight:bold'>William Bishop</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'>, EIT, LEED<sup>®</sup>
AP</span></font></b><b><font size=2 color="#003300"
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:#003300;font-weight:bold'> </span></font></b><b><font
size=2 color=green face="Franklin Gothic Medium Cond"><span style='font-size:
10.0pt;font-family:"Franklin Gothic Medium Cond";color:green;font-weight:bold'>|</span></font></b><b><font
size=2 color="#003300" face="Franklin Gothic Medium Cond"><span
style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond";color:#003300;
font-weight:bold'> </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'>Pathfinder
Engineers LLP<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'>Mechanical Engineer<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
3.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><st1:address w:st="on"><st1:Street w:st="on"><font size=1
color=black face=Arial><span style='font-size:9.0pt;font-family:Arial;
color:black'>3300 Monroe Ave., Suite 306</span></font></st1:Street><font
size=1 color=black face=Arial><span style='font-size:9.0pt;font-family:Arial;
color:black'> <br>
<st1:City w:st="on">Rochester</st1:City>, <st1:State w:st="on">NY</st1:State>
<st1:PostalCode w:st="on">14618</st1:PostalCode></span></font></st1:address><font
size=1 color=black face=Arial><span style='font-size:9.0pt;font-family:Arial;
color:black'><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'>TEL (585) 218-0730 Ext. 114<br>
FAX (585) 218-0737 <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'>bbishop@pathfinderengineers.com<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
3.0pt;font-family:Arial;color:black'><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'>www.pathfinderengineers.com<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;color:green'>P</span></font><font
color=green><span style='color:green'> </span></font><font size=1 color=green><span
style='font-size:7.5pt;color:green'>Please consider the environment before
printing this email</span></font><font color=green><span style='color:green'><o:p></o:p></span></font></p>
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