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- Xref: sparky sci.electronics:21658 sci.energy:6478 rec.autos:30626
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!darwin.sura.net!seismo!skadi!stead
- From: stead@skadi.CSS.GOV (Richard Stead)
- Newsgroups: sci.electronics,sci.energy,rec.autos
- Subject: Re: Flywheel batteries as EV power source
- Message-ID: <51710@seismo.CSS.GOV>
- Date: 28 Dec 92 23:44:39 GMT
- References: <1992Dec21.193621.12001@microware.com> <51694@seismo.CSS.GOV> <1992Dec23.214002.8965@enterprise.rdd.lmsc.lockheed.com>
- Sender: usenet@seismo.CSS.GOV
- Followup-To: sci.energy
- Lines: 48
- Nntp-Posting-Host: skadi.css.gov
-
- In article <1992Dec23.214002.8965@enterprise.rdd.lmsc.lockheed.com>, writes:
- > In article <1992Dec23.081836.4720@adobe.com>, pngai@adobe.com (Phil Ngai) writes:
- > > this: suppose I have a torch fueled by 10 gallons of gasoline. Do you
- > > believe I could vaporize your "carbon carbon" fly wheel? How would
- > > you compare that to the energy required to merely shred the material?
- >
- > Nope, I don't believe you could vaporize a carbon carbon fly wheel with 10
- > pounds of gasoline (thats why we need to get heat of vaporization numbers).
-
- He said 10 gallons. But let's take that 10 pounds - that's 115,000 kCal.
- Now let's take the heat of vaporization of carbon at 25 degrees - 14 kCal/g.
- Thus, 115,000 kCal will vaporize 8 kg of carbon. The 10 gallons would
- vaporize 64 kg of carbon. This is complete vaporization in the absence of
- oxygen. How big a flywheel were you considering?
-
- > I do belive that you could burn the flywheel on fire with the torch, but
- > that's not going to happen in a vacuum (or was that what you ment by
- > "vaporization").
-
- Given the situation, the vacuum would be breached in short order, and the carbon
- oxidized, contributing a small amount of energy to the explosion.
-
- > however for any english majors out there please post!! This thing
- > is more important to you (as you are more numerous) than it is to
- > the technocrats.
-
- Why? Why are exploding flywheels more important to english majors?
- I would assume that as long as serious and technically competant people
- can weed out technical proposals most lacking merit, that english majors
- should not be interested in the least. Afterall, that is why we have
- english majors and scientists and engineers. The english majors need to
- be able to rely on the technical people to have knowledge of and solve
- the vast majority of technical question before they are ever put before
- the general public. Otherwise, we would need everyone to be an expert
- in everything and nothing would ever get done.
-
- If an english major is interested, however, that is fine, and I think
- any such questions should be answered. However, I don't think english
- majors are in a position to argue with the technical people any more
- than the technical people are competant to argue with the english majors
- in the fine details of their specialties.
-
-
- --
- Richard Stead
- Center for Seismic Studies
- Arlington, VA
- stead@seismo.css.gov
-