It has been some time since I reviewed the energy density of electron
flywheels, but as I recall, it was double that of mechanical ones.
Incidenlty, the latter are being developed for a hybrid by at least one
flywheel manufacturer.
Mark
From: Bob Fickle <[EMAIL PROTECTED]>
Reply-To: [email protected]
To: [email protected]
Subject: Re: Lightweight Ultraconducting Energy Storage
Date: Tue, 31 Jan 2006 21:30:55 -0600
True, lightweight high-strength containment materials may make such a
system practical, although they tend to be expensive. But there's no need
to wait. Both mechanical flywheels and compressed-air energy storage share
the same characteristics in this regard: stored energy scales directly
with the strength and size (and thus mass) of the container. Both will
have the same energy capacity as a superconducting storage system; so why
wait for ultraconductors? If Kevlar is practical, go ahead and build
flywheels into electric cars!
Mark Goldes wrote:
Los Alamos National Laboratory patented a lightweight containment system
using Kevlar. While the Patent was in force, our firm had rights for use
with our polymers. Now that their Patent has expired we still expect to
use that lightweight system of containment for UMES electron flywheels.
Carbon fiber may prove to be an even better alternative and we are
watching wire development progress with that extremely light material many
times stronger than steel.
Mark
From: Bob Fickle <[EMAIL PROTECTED]>
Reply-To: [email protected]
To: [email protected]
Subject: Re: Room Temperature Superconductors and EVs
Date: Mon, 30 Jan 2006 21:50:05 -0600
Much as I'd like to have some ultraconductor wire to play with, I'm not
convinced that Ultrqaconducting Magnetic Energy Storage will replace
batteries. Magnetic fields create a pressure equal to the energy
density- and therefore require a strong (read "heavy" and "expensive")
mechanical container.
Mark Goldes wrote:
Harry,
They can be made, but not yet in wire form.
Thin films containing Ultraconductors 1 or 2 microns in diameter (1/50th
the diameter of a human hair) can always carry 50 Amperes. The
Ultraconductors run through the film in the thin direction, (i.e. normal
to the film).
Wire is 3 years and $18 million in front of us.
Once available as wire, electron flywheels can begin to replace
batteries. Ultraconducting Magnetic Energy Storage systems are expected
to prove practical.
Electric motors made with Ultraconducting wire can be much smaller and
lighter, and may require no iron. Alll plastic motors may therefore
prove practical. Superconducting motors require no iron. We suspect
the same will be true of Ultraconductors.
Mark
From: Harry Veeder <[EMAIL PROTECTED]>
Reply-To: [email protected]
To: [email protected]
Subject: Re: Who Killed the EV?
Date: Mon, 30 Jan 2006 18:29:14 -0500
If room temperature superconductors can be made they would also
boost the performance of electric vehicles.
If I remember correctly, a Time magazine cover from around '86 or '87
showed an artist's rendering of a futuristic electric vehicle as one of
the
promises of high temperature superconductors.
Harry
[EMAIL PROTECTED] wrote:
> -----Original Message-----
> From: Harry Veeder
>
> Do they mean the braking system did not use friction?
>
> <><><><><><><>
>
> It used both: disc in front, electric in rear. Here are the EV-1
specs:
>
>
http://www.evchargernews.com/CD-A/gm_ev1_web_site/specs/specs_specs_top.h
> tm
>
> or
>
> http://tinyurl.com/ckaju
>
>
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