home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.energy
- Path: sparky!uunet!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!moe.ksu.ksu.edu!mimbres.cs.unm.edu!nmt.edu!houle
- From: houle@nmt.edu (Paul Houle)
- Subject: Re: Any info. on hydrogen power for cars??
- Message-ID: <1992Nov19.175417.10952@nmt.edu>
- Organization: New Mexico Tech
- References: <1992Nov17.205815.6068@engage.pko.dec.com>
- Date: Thu, 19 Nov 1992 17:54:17 GMT
- Lines: 39
-
- In article <1992Nov17.205815.6068@engage.pko.dec.com> moroney@ramblr.enet.dec.com writes:
-
- >Before hydrogen cars can ever be more than a "look at us, see how good
- >enviromentalists we are" project/publicity stunt, one major problem has
- >to be solved. How do you generate all that hydrogen in the first place
- >without generating pollution, possibly more than running the car on gasoline
- >or some other alternate fuel in the first place?
- >
- >Also, you get NOx pollution when hydrogen is burned in an internal combustion
- >motor, the only way to make it so the "only by-product is water" is to use
- >it in a fuel cell (which is sensible anyway).
-
- The currently most economical way to make hydrogen is from the coal gas
- process, which also produces CO, but the CO can also be burned to produce
- CO2 and quite a bit of energy, so except for the CO2 emission, this could be
- fairly clean. Most people who talk about a hydrogen economy, however,
- suggest that we make the hydrogen by electrolysis of water, getting
- electricity from whatever they believe is an environmentally benign and
- potentially economical source: nuclear energy, ground-based solar, wind,
- and solar power from space satellites have all been suggested.
-
- So far as the NOx emissions go, they can be reduced by changing the
- operating parameters of the engine (cylinder temperatures) and by other
- engineering tricks, so that they could be much, much, cleaner than
- comparable gasolene-fuel vehicles. Also, photochemical smog is caused by
- a combination of hydocarbons and NOx, so simply reducing the hydrocarbons
- or the NOx alone could make a large contribution towards the reduction of
- smog and improving air quality.
-
- I personally think that biomass fuels are more likely to be used
- in a sustainable economy -- with fuel cells, one could get very close to
- zero emission (some CO2 gets released, but it was just removed from
- the atmosphere in the past few years, so this doesn't contribute to
- global warming). And significant steps can be made towards cleaner engines,
- as well as improving mass transport and urban planning.
-
-
-
- --
-