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<div class=Section1>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I just seem to remember that small issue that the Millennium
Bridge in London suffered from, harmonic resonance. A series of these things
mounted down the pavement and everyone walking in unison, and before we know it,
pedestrians will be suffering from sick pavement syndrome. Nice simulation
project, reckon that’s a real earner ;-) Arup didn’t too badly out of the Millennium
Bridge situation, even though it was one of their own making.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><a name="_MailEndCompose"><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></a></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'>From:</span></b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Keohane,
Michael<br>
<b>Sent:</b> 12 April 2010 17:09<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] Not a simulation question, but need help looking
for vendor/productdeveloper for piezoelectric application / floor tiles.<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Here is an attached link for such a system. (please note I am
not promoting it I am just aware of it’s existence should people be interested)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Home Pavegen Systems <a
href="http://www.pavegensystems.co.uk/">www.pavegensystems.co.uk</a><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Regards<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Michael Keohane<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><span lang=EN-US
style='color:windowtext'>
<hr size=2 width="100%" align=center>
</span></div>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'>From:</span></b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Haynes,
Glenn<br>
<b>Sent:</b> 12 April 2010 16:53<br>
<b>To:</b> Chris Yates; near_ej@yahoo.com; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] Not a simulation question,but need help looking
for vendor/productdeveloper for piezoelectric application / floor tiles.</span><span
lang=EN-US style='color:windowtext'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<ol start=1 type=1>
<li class=MsoNormal style='color:windowtext;mso-margin-top-alt:auto;
mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo5'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:blue'>The
cushioning effect may give the tile floor a softer feel, perhaps like
walking on a thin carpet? Just a thought.</span><o:p></o:p></li>
<li class=MsoNormal style='color:windowtext;mso-margin-top-alt:auto;
mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo5'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:blue'>I see
some difficult technical issues to be resolved, however, like sand and
dirt (and sometimes liquids) between the moving plates. Perhaps a
flexible impervious cover (sealant) could be found that will last a few
years.</span><o:p></o:p></li>
<li class=MsoNormal style='color:windowtext;mso-margin-top-alt:auto;
mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo5'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:blue'>The
idea is truly interesting and worth looking into, especially for floors
with very heavy foot traffic such as airports and some public
buildings. How about the New York Stock Exchange (Harness some of
that energy! Might mitigate the need for public power for the entire
city)?</span><o:p></o:p></li>
</ol>
<p class=MsoNormal><span style='color:windowtext'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Glenn Haynes,</span><span style='color:windowtext'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Middletown, CT </span><span style='color:windowtext'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:windowtext'><o:p> </o:p></span></p>
<div class=MsoNormal align=center style='text-align:center'><span lang=EN-US
style='color:windowtext'>
<hr size=2 width="100%" align=center>
</span></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span
lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Chris Yates<br>
<b>Sent:</b> Sunday, April 11, 2010 7:11 AM<br>
<b>To:</b> 'Chris Yates'; near_ej@yahoo.com; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] Not a simulation question,but need help looking
for vendor/ productdeveloper for piezoelectric application / floor tiles.</span><span
lang=EN-US style='color:windowtext'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Neeraj,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The feasibility of a piezoelectric system implemented as floor
tiles does seem to fly in the face of my understanding of Newton, Force and
Work.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Average person has a mass of, say, 70kg.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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 = ˝ x kX<sup>2</sup> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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 (Watts = Joules / second) the energy recovered
through floor tiles would be minimal.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I hope this is useful.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Chris<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'>From:</span></b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Chris Yates<br>
<b>Sent:</b> 10 April 2010 12:33<br>
<b>To:</b> near_ej@yahoo.com; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</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></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Neeraj,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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></p>
<p class=MsoListParagraph style='text-indent:-18.0pt'><span style='font-size:
11.0pt;font-family:Symbol;color:#1F497D'>·</span><span style='font-size:7.0pt;
color:#1F497D'> </span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";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></p>
<p class=MsoListParagraph style='text-indent:-18.0pt'><span style='font-size:
11.0pt;font-family:Symbol;color:#1F497D'>·</span><span style='font-size:7.0pt;
color:#1F497D'> </span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Whoopee
cushion technology is tried and tested, having been developed over the last 80
years.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt'><span style='font-size:
11.0pt;font-family:Symbol;color:#1F497D'>·</span><span style='font-size:7.0pt;
color:#1F497D'> </span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Zero
ODP & GWP<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt'><span style='font-size:
11.0pt;font-family:Symbol;color:#1F497D'>·</span><span style='font-size:7.0pt;
color:#1F497D'> </span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Fun,
and a possible lasting attraction encouraging users back to the building for
years to come!<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Best regards<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Chris Yates<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'>From:</span></b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>"near_ej@yahoo.com"<br>
<b>Sent:</b> 10 April 2010 04:10<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</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></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>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
India.<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><br>
<br>
Send free SMS to your Friends on Mobile from your Yahoo! Messenger. Download
Now! http://messenger.yahoo.com/download.php<o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='color:windowtext'><br>
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