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Dennis,<br>
Heard of it. Haven't used it. Evaluated it during design<br>
and came up with the following:<br>
1. Another system to buy and maintain. <br>
<br>
2. Efficiency and capture effectiveness of hepas is well
established.<br>
<br>
3. Unclear how it will lower costs unless they link it with
decreased<br>
fan speed.We can all lower fan speed when the lab is empty<br>
and save as much (or more) energy.<br>
<br>
4. Though the filters may be effective at lower fan speed with
charged <br>
particles -lowering fan speed decreases entrainment of particles in
the<br>
lab space. We have to get the particles to the filter - and a
minimum<br>
linear velocity is needed to do that.<br>
<br>
5. Unclear (skeptical) how it will reduce hepa load. We have to
capture<br>
whatever there is to capture whether we electrostatically activate
it to <br>
enhance capture or not. i.e. the load seems fixed by occupancy and
activity.<br>
<br>
6. NIOSH already has encouraging data of non charged hepas<br>
as effective for nanoparticle capture. I would not want this company<br>
to tout their product as "required" for nanoparticle or nanowire
filtering.<br>
<br>
Sincerely,<br>
Bill Flounders<br>
Berkeley NanoLab<br>
<br>
<br>
<div class="moz-cite-prefix">Dennis Grimard wrote:<br>
</div>
<blockquote
cite="mid:CAF2dRnR8FmBMRRhyjoYMYFdTjAhLEW29Vaifeu5g6HSs-wmfLg@mail.gmail.com"
type="cite">All:
<div><br>
</div>
<div>Has anyone used or heard of this technology or this company?</div>
<div><br>
</div>
<div>They claim to be able to purify the air reducing the load on
the HEPAs thereby lowering energy costs (not sure what they are
actually claiming ... but I think it is something like that).<br
clear="all">
<div><br>
</div>
-- <br>
Dennis S Grimard, Ph.D
<div>Managing Director, Lurie Nanofabrication Facility</div>
<div><br>
</div>
<div>University of Michigan</div>
<div>1246D EECS Building</div>
<div>1301 Beal Avenue</div>
<div>Ann Arbor, MI 48109-2122</div>
<div>(734) 368-7172 (Cell)</div>
<div>(734) 647-1781 (Fax)</div>
<div><a moz-do-not-send="true" href="http://www.lnf.umich.edu"
target="_blank">http://www.lnf.umich.edu</a></div>
</div>
<br>
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