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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'>Whoops, (not whoopee), the talk of
professionalism. Allow me to digress, I don’t think we are hamsters nor should
we be compared to those loveable furry creatures.<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'>Thank you.<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'>Kevin<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>
<div>
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<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'> Chris Yates [mailto:chris@zed-uk.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Sunday, April 11, 2010 7:11
AM<br>
<b><span style='font-weight:bold'>To:</span></b> 'Chris Yates';
near_ej@yahoo.com; <st1:PersonName w:st="on">bldg-sim@lists.onebuilding.org</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] Not a
simulation question, but need help looking for vendor/ product developer for
piezoelectric application / floor tiles.</span></font><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Neeraj,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>I apologise for my
response. I do not wish it to reflect in any way on the professionalism and
help that this list endeavours to supply. I was out of order, sorry.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>I seek to supply a
more appropriate reply (and in doing so open myself to ridicule because there
are probably a couple of mistakes in my working out!). Here goes:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>The feasibility of a
piezoelectric system implemented as floor tiles does seem to fly in the face of
my understanding of <st1:City w:st="on"><st1:place w:st="on">Newton</st1:place></st1:City>,
Force and Work.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Average person has a
mass of, say, 70kg.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Force exerted by
both feet, therefore = mass x gravity = 70 x 9.81 = 686.7Newtons or 343 per
foot<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>For the transfer of
energy with every foot fall Work must be done to the tile. That means it must
undertake some deflection. The resulting work transferred to the tile in Joules
would be similar to the elastic potential energy equation: EPE = ½ x kX<sup>2</sup>
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Let’s say the
tile deflects 1mm under one foot. Therefore the spring constant k for the tile
would be 343350N/m and EPE of the tile whilst stood on would be 0.172 Joules.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>This is just EPE
stored by the tile whilst loaded. The tile will probably consist of the piezo
device and a substrate which the energy will dissipate over. Let’s be
generous and assume 20% of that work is converted to electrical energy. We are
now talking about 0.034 Joules per foot fall. The rest will escape as heat.
Considering a human metabolism whilst walking will be of the order of 120 Watts
plus (<st1:place w:st="on">Watts</st1:place> = Joules / second) the energy
recovered through floor tiles would be minimal.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>I hope this is
useful.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Chris<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Chris Yates<br>
<b><span style='font-weight:bold'>Sent:</span></b> 10 April 2010 12:33<br>
<b><span style='font-weight:bold'>To:</span></b> near_ej@yahoo.com; <st1:PersonName
w:st="on">bldg-sim@lists.onebuilding.org</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] Not a
simulation question, but need help looking for vendor/ product developer for
piezoelectric application / floor tiles.<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
lang=EN-GB style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Neeraj,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>An interesting
application. Although I cannot help you with the piezoelectric devices you
seek, I do know a very reliable manufacturer of whoopee cushions. If these
could somehow be connected into a turbine generator system, then I’m sure
you could generate an equivalent amount of power. Other benefits include:<o:p></o:p></span></font></p>
<p class=msolistparagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=2 color="#1f497d" face=Symbol><span lang=EN-GB style='font-size:11.0pt;
font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<font size=1
face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font size=2 color="#1f497d"
face=Calibri><span lang=EN-GB style='font-size:11.0pt;font-family:Calibri;
color:#1F497D'>With the deluxe “auto inflating” range, the cushions
would remove air from the room with every footfall – energy free
ventilation!<o:p></o:p></span></font></p>
<p class=msolistparagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=2 color="#1f497d" face=Symbol><span lang=EN-GB style='font-size:11.0pt;
font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<font size=1
face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font size=2 color="#1f497d"
face=Calibri><span lang=EN-GB style='font-size:11.0pt;font-family:Calibri;
color:#1F497D'>Whoopee cushion technology is tried and tested, having been
developed over the last 80 years.<o:p></o:p></span></font></p>
<p class=msolistparagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=2 color="#1f497d" face=Symbol><span lang=EN-GB style='font-size:11.0pt;
font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<font size=1
face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font size=2 color="#1f497d"
face=Calibri><span lang=EN-GB style='font-size:11.0pt;font-family:Calibri;
color:#1F497D'>Zero ODP & GWP<o:p></o:p></span></font></p>
<p class=msolistparagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=2 color="#1f497d" face=Symbol><span lang=EN-GB style='font-size:11.0pt;
font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<font size=1
face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font size=2 color="#1f497d"
face=Calibri><span lang=EN-GB style='font-size:11.0pt;font-family:Calibri;
color:#1F497D'>Fun, and a possible lasting attraction encouraging users back to
the building for years to come!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Best regards<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Chris Yates<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-GB
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>"near_ej@yahoo.com"<br>
<b><span style='font-weight:bold'>Sent:</span></b> 10 April 2010 04:10<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">bldg-sim@lists.onebuilding.org</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] Not a
simulation question, but need help looking for vendor/ product developer for
piezoelectric application / floor tiles.<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
lang=EN-GB style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial'>Hello all,<br>
<br>
We are exploring the feasibility of deploying a piezoelectric application in a
large (approx. 2,00,000 sqft), 9 stories tall, public building coming up in <st1:country-region
w:st="on"><st1:place w:st="on">India</st1:place></st1:country-region>.<br>
The building is being planned right now -- currently in the design development
phase rolling fast towards final design and tendering stage(s). It is expected
to see a very high foot fall on the ground and first floor levels and that's
where I need further help. Is there a company available to design and sell an
application or a product that will generate electricity -- perhaps using some sort
of floor tiles?<br>
<br>
Any of you who could help me may write to me directly since this is not a
simulation question.<br>
<br>
Thanks,<br>
Neeraj<br>
<br>
Neeraj Kapoor<br>
t: +91.99581.70018<br>
</span></font><span lang=EN-GB><br>
<br>
Send free SMS to your Friends on <st1:City w:st="on"><st1:place w:st="on">Mobile</st1:place></st1:City>
from your Yahoo! Messenger. Download Now! http://messenger.yahoo.com/download.php<o:p></o:p></span></p>
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