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<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial>Vinay et. al:</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial><U>Understanding and Estimating Large Building
Infiltration</U>.... One of those 'Defense of the Dark Arts' courses at
Hogwarts!</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial>Reminds me of a quote from Donald Rumsfield: "... because as
we know, there are known knowns; there are things we know we know. We also know
there are known unknowns, that is to say we know there are some things we do not
know. But there are also unknown unknowns - the ones we don't know we don't
know"</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial>Chew on that one for awhile...</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010></SPAN><SPAN
class=375113521-01072010><FONT color=#0000ff size=2
face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial>If there was such a course, I'd recommend the attached pdf be
in the list of required reading.. If nothing else it's a gold mine
refererence for explaining to your client why 'measuring' infiltration rates in
his/her building, while theoetically possible, it most likely would require an
ENORMOUS amount of cash and airflow to generate a meaningful "reference
pressure". This document is "solid" on the fundamentals. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial>So, if you want to do it 'right' - this pdf will help you
correctly specify a infiltration measurement test procedure to be performed by a
qualified 'Testing Agency. I'd bring several bags of cash with
me.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial>The fallback here that many of us may find useful are the
'standards' tables on pages 5, 6, and 7. If you don't measure, you will have to
estimate, and atleast these 'standards' will give you a sense of how
'non-standard' your final estimate is.. We have to work with what we have..
</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial>ASHRAE's RP-935: "Protocol for Field Testing of Tall Buildings
to Determine Envelope Air Leakage Rate" - (Available free to ASHRAE members
through the ASHRAE bookstore) is another good reference to get familiar with
possible methods for better understanding the "known unknowns".... As for the
"unknown unknowns" - thank god for ASHRAE research. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT size=2><FONT color=#0000ff><SPAN
class=375113521-01072010>All the Best,</SPAN></FONT></FONT></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT size=2><FONT color=#0000ff><SPAN
class=375113521-01072010></SPAN></FONT></FONT></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT size=2><FONT color=#0000ff><SPAN
class=375113521-01072010>_Chris</SPAN></FONT></FONT></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT size=2><FONT color=#0000ff><SPAN
class=375113521-01072010></SPAN></FONT></FONT></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT size=2><FONT color=#0000ff><SPAN
class=375113521-01072010>Chris Balbach, PE, CEM BEMP,
CMVP</SPAN></FONT></FONT></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT size=2><FONT color=#0000ff><SPAN
class=375113521-01072010></SPAN><SPAN class=375113521-01072010>Vice President of
Research and Development</SPAN></FONT></FONT></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT size=2><FONT color=#0000ff><SPAN
class=375113521-01072010>Performance Systems Development of NY,
LLC</SPAN></FONT></FONT></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT size=2><FONT color=#0000ff><SPAN
class=375113521-01072010>124 Brindley Street, Suite 4, Ithaca NY
14850</SPAN></FONT></FONT></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT size=2><FONT color=#0000ff><SPAN
class=375113521-01072010><A
href="http://www.psdconsulting.com">http://www.psdconsulting.com</A></SPAN></FONT></FONT></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT size=2><FONT color=#0000ff><SPAN
class=375113521-01072010>ph: (607)-327-1647</SPAN></FONT></FONT></FONT></DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=375113521-01072010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV><BR>
<DIV dir=ltr lang=en-us class=OutlookMessageHeader align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Nick
Caton<BR><B>Sent:</B> Thursday, July 01, 2010 5:14 PM<BR><B>To:</B> Vinay
Devanathan; bldg-sim@lists.onebuilding.org<BR><B>Subject:</B> Re: [Bldg-sim]
Infiltration<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">That’s
typical in my experience.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Infiltration
is figured primarily based on temperature and pressure differential (wind speed
vs.interior pressurization) across an exterior surface, among other
things. Lacking any exterior surfaces, I would presume any “interior
cross-zonal infiltration” is generally negligible, unless you might be dealing
with a large positively pressurized unconditioned space…?<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">~Nick<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><IMG
id=Picture_x0020_1 alt=cid:489575314@22072009-0ABB
src="cid:375113521@01072010-14D0" width=119 height=37></SPAN><B><SPAN
style="FONT-FAMILY: 'Stylus BT','sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 11pt"><o:p></o:p></SPAN></B></P>
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style="FONT-FAMILY: 'Stylus BT','sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 11pt"><o:p> </o:p></SPAN></B></P>
<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Stylus BT','sans-serif'; COLOR: #2d4d5e; FONT-SIZE: 11pt">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
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ks 66061<o:p></o:p></SPAN></P>
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<P class=MsoNormal><B><SPAN
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style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Vinay
Devanathan<BR><B>Sent:</B> Thursday, July 01, 2010 2:57 PM<BR><B>To:</B>
bldg-sim@lists.onebuilding.org<BR><B>Subject:</B> [Bldg-sim]
Infiltration<o:p></o:p></SPAN></P></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Hello,<BR><BR>While performing energy modeling, I am guessing
it is enough if we account infiltration just for the zones in contact with the
exterior environment? Am I right?<BR>Or do we have to include interior zones in
infiltration calc?<BR><BR>Thank
you.<BR><BR>Regards,<BR>Vinay<o:p></o:p></P></DIV></BODY></HTML>