From: Peri Hartman via EV <[email protected]>To: brucedp5
<[email protected]>, [email protected]: Re: [EVDL]
Piezo-power> 10mi of freeway could charge all the EVs in
Burbank-CA(?)Date: 8/26/16, 7:25 AM
Really? Is rolling resistance so high that there's energy to power
Burbank? I'm not going to do the math but it sounds preposterous. Ok,
some of the math: 105000 homes at an average of 1MWh/month. That's
10.5GWh/month or 14.5Mwh/hour. So, that strip of highway needs to
produce 14.5Mw. Still seems preposterous.
Really, again? Even if all those cars rolling on the highway can
produce
14.5Mw, is that a good idea? Seems we want to reduce rolling
resistance
and make EVs (and other vehicles) more efficient. To give the benefit
of
the doubt, maybe it's a tradeoff and the rolling resistance of asphalt
is being traded for that of piezoelectrics.
Peri
------ Original Message ------
From: "brucedp5 via EV" <[email protected]>
To: [email protected]
Sent: 26-Aug-16 2:40:55 AM
Subject: [EVDL] Piezo-power> 10mi of freeway could charge all the EVs
in
Burbank-CA(?)
>
>
>http://www.awaken.com/2016/08/california-freeways-will-soon-generate-electricity/#14718579495901&action=collapse_widget&id=0&data=
>California Freeways Will Soon Generate Electricity
>August 22, 2016 Laura Goldman
>
>[image
>http://www.awaken.com/wp-content/uploads/2016/08/1.jpg
>]
>
>Energy conservation is probably not the first thing that comes to
mind
>when
>you think about freeways jammed with idling vehicles…
>
>Awaken
>But in California, which has some of the most congested freeways in
the
>country, that’s about to change. The California Energy Commission
(CEC)
>has
>approved a pilot program in which piezoelectric crystals will be
>installed
>on several freeways.
>
>No, these aren’t some kind of new-agey crystals with mystical powers.
>Piezoelectric crystals, about the size of watch batteries, give off
an
>electrical discharge when they’re mechanically stressed, such as when
a
>vehicle drives over them. Multiply that by thousands of vehicles and
it
>creates an electric current that can be harvested to feed the grid.
>
>In fact, scientists estimate the energy generated from piezoelectric
>crystals on a 10-mile stretch of freeway could provide power for the
>entire
>city of Burbank (population: more than 105,000).
>
>“I still get stopped on the street by people who ask what happened to
>the
>idea of using our roads to generate electricity,” said Mike Gatto, a
>Los
>Angeles assemblyman, in a press releaseannouncing the program.
>“California
>is the car capital of the world and we recycle just about everything.
>So why
>not capture the energy from road vibrations and put it to good use?”
>
>Piezoelectric-based energy‐harvesting technology is already being
used
>in
>other countries. Since 2009, all the displays in the East Japan
Railway
>Company’s Tokyo station have been powered by people walking on the
>piezoelectric flooring. Italy has signed a contract that will install
>this
>technology in a portion of the Venice-to-Trieste Autostrada. Israel
is
>already using this technology on some highways, which is how Gatto
got
>the
>idea for the pilot program in California. A friend returning from a
>trip to
>Israel raved about a road that produced energy.
>
>“If piezoelectric‐based technology has the potential to match the
>performance, reliability and costs of existing or emerging renewable
>energy
>sources, then it can potentially diversify California’s resource
>portfolio
>and ultimately increase grid reliability and reduce costs to
>ratepayers,”
>states a report prepared for the CEC in 2014 by international
>certification
>body and classification society DNV KEMA Energy & Sustainability (now
>known
>as DNV GL).
>
>Piezoelectric technology has been used for years in electric guitars
>and
>sonar. The crystals are “in effect the reverse of sonar: a vibration
>comes
>in and an electric pulse comes out,” according to the press release.
>This
>video provides an animated illustration of how they could generate
>electricity on roadways.
>
>After California Gov. Brown vetoed an assembly bill Gatto introduced
in
>2011
>that would have launched two piezoelectric pilot programs in
>California,
>Gatto asked the CEC to study the technology. Five years later, the
CEC
>has
>agreed to fund pilot projects around the state.
>
>If they are successful, perhaps other states will consider harvesting
>electricity from their busy roadways.
>
>“Thirty years ago, no one would have believed that black silicon
panels
>in
>the desert could generate ‘solar‘ power,” Gatto stated.
“Piezoelectric
>technology is real and I am glad the state has finally acknowledged
its
>potential in becoming an energy source.”
>[© awaken.com]
>...
>http://www.ecowatch.com/california-freeways-generate-electricity-piezoelectric-crystals-1967109463.html
>California Freeways Will Soon Generate Electricity
>Aug 10, 2016
>
>
>
>
>For EVLN EV-newswire posts use:
>http://evdl.org/evln/
>
>
>{brucedp.0catch.com}
>
>--
>View this message in context:
>http://electric-vehicle-discussion-list.413529.n4.nabble.com/Piezo-power-10mi-of-freeway-could-charge-all-the-EVs-in-Burbank-CA-tp4683459.html
>Sent from the Electric Vehicle Discussion List mailing list archive
at
>Nabble.com.
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