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- From: carl@SOL1.GPS.CALTECH.EDU (Carl J Lydick)
- Newsgroups: sci.electronics,sci.energy,rec.autos
- Subject: Re: Flywheel batteries as EV power source
- Date: 28 Dec 1992 21:00:31 GMT
- Organization: HST Wide Field/Planetary Camera
- Lines: 60
- Distribution: world
- Message-ID: <1hnptfINNnna@gap.caltech.edu>
- References: <78564@ncratl.AtlantaGA.NCR.COM> <1992Dec22.214616.27043@fcom.cc.utah.edu> <78580@ncratl.AtlantaGA.NCR.COM>,<1992Dec23.154010.13703@fcom.cc.utah.edu>
- Reply-To: carl@SOL1.GPS.CALTECH.EDU
- NNTP-Posting-Host: sol1.gps.caltech.edu
-
- In article <1992Dec23.154010.13703@fcom.cc.utah.edu>, bbarkey@lark.utah.edu (Brian Barkey) writes:
- >>The flywheel will try to dissipate it's energy over a span of milliseconds.
- >>
- >I guess I missed the part about dissipating energy over ms. What's the
- >basis for this?
-
- Observation of high-speed systems, consideration of the amount of stress the
- flywheel would be under when it failed, etc.
-
- >Also, sometimes in accidents the gasoline does mix sufficently well
- >with the air to be a hazard (remember the Pinto?)
-
- Can you cite a single accident involving a Pinto in which, say, a full two
- gallons of gasoline vaporized and mixed with the atmosphere in the optimum
- fuel/air ratio for an explosion?
-
- I didn't think so. Those nasty explosions involving damaged Pintos involved
- the explosion of only a couple of teaspoons of gasoline.
-
- Why don't people understand the amount of energy involved here, even to within
- an order of magnitude (please note: There are 768 teaspoons per gallon)?
-
- >I'm certain that
- >in a flywheel powered car there wil be accidents that will be explosive
- >and many that are not.
-
- If the flywheel fails, at speed, and the containment of for the flywheel is
- light and compact enough to make it competitive with batteries, then you're
- likely to be talking about an explosive failure.
-
- >Isn't this a factor of the design? If the
- >flywheel power source is a viable and marketable option I'm certain
- >that manufacturers in lawsuit happy countries like this would
- >make a couple of prototypes and run 'em into walls to see what happens.
-
- That's the idea. However, someone was claiming that this is "just around the
- corner." Turns out that the magazine article that spurred this discussion is
- about some entrepreneurs who claim (though they haven't built anything yet)
- that based on a "computer simulation" the product should have certain traits.
- They claim it will take two years to build a prototype.
-
- >This technology is relatively new, gasoline powered cars have been
- >around for a century or so and there are still problems.
- >Maybe the flywheel isn't safe. Could it be used in a smaller capacity
- >to augment accelerations from braking energy? All of this discussion is
- >conjecture, but aren't ideas wonderful to ponder?
-
- The idea of using a flywheel as a load-averaging mechanism on an electric
- vehicle powered by a constant-speed engine and a generator has been around for
- quite some time, and looks like a much better application of the flywheel
- technology to me. Unfortunately, the ZEV law in California is likely to deny
- such technology access to the largest market for automobiles in the country.
- --------------------------------------------------------------------------------
- Carl J Lydick | INTERnet: CARL@SOL1.GPS.CALTECH.EDU | NSI/HEPnet: SOL1::CARL
-
- Disclaimer: Hey, I understand VAXen and VMS. That's what I get paid for. My
- understanding of astronomy is purely at the amateur level (or below). So
- unless what I'm saying is directly related to VAX/VMS, don't hold me or my
- organization responsible for it. If it IS related to VAX/VMS, you can try to
- hold me responsible for it, but my organization had nothing to do with it.
-