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- Xref: sparky sci.electronics:21117 sci.energy:6257 rec.autos.tech:16888
- Newsgroups: sci.electronics,sci.energy,rec.autos.tech
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!swrinde!emory!rsiatl!ke4zv!gary
- From: gary@ke4zv.uucp (Gary Coffman)
- Subject: Re: Flywheel batteries as EV power source
- Message-ID: <1992Dec18.153146.17010@ke4zv.uucp>
- Reply-To: gary@ke4zv.UUCP (Gary Coffman)
- Organization: Gannett Technologies Group
- References: <1992Dec15.194558.2556@adobe.com> <1992Dec16.192456.6261@news.cs.brandeis.edu> <1goebdINNik@gap.caltech.edu> <BzE2oz.I4H@ns1.nodak.edu>
- Date: Fri, 18 Dec 1992 15:31:46 GMT
- Lines: 25
-
- In article <BzE2oz.I4H@ns1.nodak.edu> csmith@plains.NoDak.edu (Carl Smith) writes:
- >In article <1goebdINNik@gap.caltech.edu> carl@SOL1.GPS.CALTECH.EDU writes:
- >>
- >>But enough energy to move that vehicle
- >>on the order of 100 miles at freeway speeds is still around there someplace.
- >>It didn't just vanish. And that's a LOT of energy. And it got dumped FAST.
- >>
- >>In other words: BOOM!
- >
- >I am not going to argue the above point, but consider this. If you are
- >going to measure danger by the amount of stored energy, then which is
- >more dangerous when it explodes? A flywheel that has enough energy to
- >move a car 100 miles at freeway speeds, or a tank of gasoline with enough
- >energy to move a car at greater-than-highway speeds for 300 miles?
-
- The difference is that liquid gasoline can't explode, only a properly
- mixed 14:1 ratio vapor can explode or burn completely while the flywheel
- can fail explosively. Liquid gasoline is a potential fire hazard in a
- collision, but it is not an explosion hazard unless the liquid is properly
- vaporized and mixed in the correct ratio with oxygen. TV reruns of the A Team
- notwithstanding, gas tanks can't explode if they're full. A nearly empty
- tank *may* explode under the right conditions, but the force is much less
- than the energy content of a full tank of gas.
-
- Gary
-