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<p class=MsoNormal><span style='color:#1F497D'>Eduardo,<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 this comment
but would accept what the reviewer says. Even if it is not in ASHRAE 90.1 2004
Appendix G, the reviewer has final authority on items not directly stated in
ASHRAE Appendix G. <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'>You can try to argue it but I
don’t see the reviewer accepting it since there is not a clear answer to
how it should be modeled. Usually you need documentation if you are going to
try to change the reviewer’s mind. Since the baseline model does not
include energy recovery it does not make sense to take the pressure drop for
energy recovery into the fan consumption for the baseline 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'>Good luck,<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'>Otto<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"'> Eduardo Galeano
[mailto:egaleano@EMEGroup.com] <br>
<b>Sent:</b> Monday, December 05, 2011 3:43 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Baseline Fan power pressure drop
adjustmentclarification<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hello Everyone,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Recently we received a LEED review comment related to EAc1
for one of our projects and we would like to get some of your opinions on this
issue in case anyone else experienced this problem before. The project is a
laboratory building and we are filing under LEED NC v2.2 using ASHRAE
90.1-2004. We implemented addendum ac to ASHRAE 90.1-2004 to claim the baseline
fan power pressure adjustments found in section 6 of 90.1. The comment is as
follows:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><b><span style='font-size:12.0pt'>“It appears that a
pressure credit is being taken for exhaust air heat recovery for fan power in
the Baseline Case. However, while exhaust air heat recovery is present in the
Proposed Case, it is not present in the Baseline Case and therefore the
pressure credit for fan power cannot be taken. If appealing this credit, remove
all Baseline Case fan power pressure credits for exhaust air heat recovery, and
update the model and template results.”</span><o:p></o:p></b></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Based on our modeling methodology, heat recovery is not
required in the baseline and this seems to have been accepted. However, what we
don’t understand is why the baseline fan pressure adjustment cannot be
used for heat recovery elements present in the proposed design if the baseline
does not require it. Our understanding was that baseline fan power pressure
drop adjustments were mutually exclusive of any requirement of baseline system
components (e.g. heat recovery). <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>We are also aware that in ASHRAE 90.1-2007 Appendix G,
underneath table G3.1.2.9 the following text is included:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>“<i>Do not include pressure drop adjustments for
evaporative coolers or heat recovery devices that are not required in the
baseline system by Section G3.1.2.10.”<o:p></o:p></i></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>However, such sentence is not included in any addenda to
ASHRAE 90.1-2004 as far as we can tell, and it should only be considered for
projects filing under ASHRAE 90.1-2007. Any thoughts? Is it not acceptable to
claim the baseline fan pressure credits for system components not required in
the baseline model? <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks in advance. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Eduardo<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;color:#365F91'>Eduardo
Galeano, LEED AP <o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#365F91'><img width=51
height=60 id="Picture_x0020_1" src="cid:image001.jpg@01CCB36C.B8064400"
alt="Logo 2"><o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;color:#365F91'>EME
Consulting Engineering Group, LLC<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#365F91'>159 West 25<sup>th</sup>
Street, 5<sup>th</sup> Floor <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#365F91'>New York,
NY 10001<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#365F91'>Tel:
212-529-5969<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#365F91'>Fax:
212-529-6023<o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:8.0pt'><a
href="http://www.emegroup.com">www.emegroup.com</a><o:p></o:p></span></b></p>
<p class=MsoNormal><o:p> </o:p></p>
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