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JRR wrote;<br>
<br>
I won an ASME regional design contest prize with my Solar House
design, a graduating<br>
semester design project. It was later fully detailed and built in
1986. We moved in Jan<br>
1987. It is basically a LEED Platinum building, one story with
finished basement, 2x6<br>
studs 24 OC upstairs with 1" XPS sheathing, brick vernier 100%, etc.<br>
<br>
The main surprises vis a vis air infiltration were / are<br>
<br>
1) The porosity of the above grade basement CMUs allowing air
infiltration.<br>
2) The top or finish course of CMUs was not always sealed from an
air infiltration<br>
point of view and many of these CMU cores were hidden behind
finish dry wall<br>
for years.<br>
3)The air return duct through the attic even though sealed with
metal tape and covered<br>
with R-25 batts was not sealed to the attic penetration / wood
surround for years.<br>
4) One bathroom had an outside wall stud space with no insulation
at all - it contained<br>
the plumbing vent stack. The framing crew and insulation crews
thought we were <br>
'over insulated' and just didn't need it.<br>
5) None of the plumbing stacks were sealed at the attic penetration
on the outside<br>
by the work crews.<br>
6) The Active Solar plumbing penetrations were not sealed at the
attic penetration<br>
by the work crews.<br>
7) Rodentia bent the clothes dryer outside vent flap so severely
that it would not close<br>
completely on its own, but we never had mice enter the house via
this access.<br>
8) Conventional plumbing stack boots, black rubber, were utterly
destroyed by the<br>
heat from the Active Solar pipes. We made silicon rubber
fittings to replace them.<br>
We run an oversquare ( more sq ft collector than gal of tankage
) system with 6/12<br>
slope 20 degrees W of S at ~ 38:45 N. We use the active system
for more than<br>
domestic hot water. Since we sabotaged the evil tempering valve <span
class="moz-smiley-s8"><span> =-O </span></span><br>
we have all metal bodied valves through out the house and a
stainless steel tub on the<br>
dishwasher.<br>
9) None of these problems was detected by a military grade IR video
shot from outside<br>
the house in freezing cold weather. IR shot inside the attic
was extremely revealing.<br>
10) Leak testing has to be done during windy weather -- the leaks
act in concert., and<br>
CFD considerations show that differing pressures exist at
specific locations.<br>
<br>
Our all electric bill for 4500 sq ft this last December was $72.00<br>
<br>
We are developing a new version of this house with architectural as
well as energy improvements.<br>
<br>
John R Ross III PE<br>
Westwind Corporation<br>
Vienna, VA 22182-1958<br>
<a class="moz-txt-link-abbreviated" href="mailto:energy.wwind@cox.net">energy.wwind@cox.net</a><br>
<br>
<br>
Andy hoover wrote:
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<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;">Hi all:<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;">We do
building envelope consulting and are
very curious as to what folks do and what rates they use whatever
approach.
When looking at buildings we find that most infiltrate much more in
the
real world than designers estimate and that the fluctuations are far
greater
than predicted. We would also love it if anyone has any experiences
which
can be shared.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;">Thanks,<o:p></o:p></span></font></p>
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style="font-size: 10pt; font-family: Arial; color: navy;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;">Andy <o:p></o:p></span></font></p>
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style="font-size: 10pt; font-family: Arial; color: navy;"><o:p> </o:p></span></font></p>
<div>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;">Andy Hoover</span></font><font
color="navy"><span style="color: navy;"><o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;">Principal<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;">The BEST
Consultant, Inc.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;">Office:
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style="font-size: 10pt; font-family: Arial; color: navy;">Fax:678-827-0574<o:p></o:p></span></font></p>
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style="font-size: 11pt; color: navy;"><a moz-do-not-send="true"
href="http://www.thebestconsultant.com">www.thebestconsultant.com</a></span></font><font
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<p class="MsoNormal"><b><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma; font-weight: bold;">From:</span></font></b><font
face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;">
<a class="moz-txt-link-abbreviated" href="mailto:bldg-sim-bounces@lists.onebuilding.org">bldg-sim-bounces@lists.onebuilding.org</a>
[<a class="moz-txt-link-freetext" href="mailto:bldg-sim-bounces@lists.onebuilding.org">mailto:bldg-sim-bounces@lists.onebuilding.org</a>] <b><span
style="font-weight: bold;">On Behalf Of </span></b>Talbert, Joshua<br>
<b><span style="font-weight: bold;">Sent:</span></b> Friday, February
06, 2009
10:30 AM<br>
<b><span style="font-weight: bold;">To:</span></b>
<a class="moz-txt-link-abbreviated" href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a><br>
<b><span style="font-weight: bold;">Subject:</span></b> [Bldg-sim]
Infiltration
Schedule</span></font><font face="Times New Roman" size="3"><span
style="font-size: 12pt; font-family: "Times New Roman";"><o:p></o:p></span></font></p>
</div>
<p class="MsoNormal"><font face="Calibri" size="2"><span
style="font-size: 11pt;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Calibri" size="2"><span
style="font-size: 11pt;">Howdy
Bldg Sim peers!<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Calibri" size="2"><span
style="font-size: 11pt;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Calibri" size="2"><span
style="font-size: 11pt;">While
working on LEED Equest simulations I find that in an effort to simplify
I end
up deleting the P-Inf and C-Inf Infiltration Schedules all of the time
and end
just use "<i><span style="font-style: italic;">undefined"</span></i> to
simulate a constant infiltration rate. I was curious to know if anyone
uses the actual Infiltrations schedules, to emulate winds and or
building
pressurization, and if so do you typically achieve more energy savings,
and do
you find it worth the extra effort?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Calibri" size="2"><span
style="font-size: 11pt;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Calibri" size="2"><span
style="font-size: 11pt;">Thanks
all and be well.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Calibri" size="2"><span
style="font-size: 11pt;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Calibri" size="2"><span
style="font-size: 11pt;">Josh<o:p></o:p></span></font></p>
<div>
<p class="MsoNormal"><font color="#003366" face="Papyrus" size="3"><span
style="font-size: 12pt; font-family: Papyrus; color: rgb(0, 51, 102);">Joshua
W. Talbert </span></font><font color="#003366" face="Times New Roman"
size="2"><span
style="font-size: 10pt; font-family: "Times New Roman"; color: rgb(0, 51, 102);">P.E.,
LEED-AP</span></font><font color="#003366" face="Papyrus" size="3"><span
style="font-size: 12pt; font-family: Papyrus; color: rgb(0, 51, 102);"><o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="#003366" face="Papyrus" size="3"><span
style="font-size: 12pt; font-family: Papyrus; color: rgb(0, 51, 102);">Mechanical
Engineer<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="#003366" face="Arial" size="5"><span
style="font-size: 16pt; font-family: Arial; color: rgb(0, 51, 102);">Hallam</span></font><b><font
color="#cc3300" face="Arial Black" size="5"><span
style="font-size: 16pt; font-family: "Arial Black"; color: rgb(204, 51, 0); position: relative; top: -1pt; font-weight: bold;">///</span></font></b><font
color="#003366" face="Arial" size="5"><span
style="font-size: 16pt; font-family: Arial; color: rgb(0, 51, 102);">ICS<o:p></o:p></span></font></p>
<p class="MsoNormal"><st1:Street w:st="on"><st1:address w:st="on"><font
color="#003366" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: rgb(0, 51, 102);">38
Eastwood Dr. Suite 200</span></font></st1:address></st1:Street><font
color="#003366" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: rgb(0, 51, 102);"><o:p></o:p></span></font></p>
<p class="MsoNormal"><st1:place w:st="on"><st1:City w:st="on"><font
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style="font-size: 10pt; font-family: Arial; color: rgb(0, 51, 102);">,
<st1:State w:st="on">VT</st1:State> <st1:PostalCode w:st="on">05403</st1:PostalCode></span></font></st1:place><font
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<p class="MsoNormal"><font color="#003366" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: rgb(0, 51, 102);">P:
(802) 658-4891<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="#003366" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: rgb(0, 51, 102);">F:
(802) 658-1457<o:p></o:p></span></font></p>
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