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- Newsgroups: sci.energy
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!decwrl!sdd.hp.com!zaphod.mps.ohio-state.edu!swrinde!emory!kd4nc!ke4zv!gary
- From: gary@ke4zv.uucp (Gary Coffman)
- Subject: Re: External-Combustion Cars -- Possible?
- Message-ID: <1992Nov13.191148.12117@ke4zv.uucp>
- Reply-To: gary@ke4zv.UUCP (Gary Coffman)
- Organization: Gannett Technologies Group
- References: <1992Nov12.111359.11804@bsu-ucs>
- Date: Fri, 13 Nov 1992 19:11:48 GMT
- Lines: 31
-
- In article <1992Nov12.111359.11804@bsu-ucs> 01crmeyer@leo.bsuvc.bsu.edu (Craig Meyer) writes:
- >Hey, everyone, thanks for the input on the compressed-air car! Needless to
- >say, I am now convinced that such a craft would travel less than twenty blocks
- >on a tank of air OR wiegh 30,000 lbs because of the tanks.
- >
- >I've got another idea, though, that I hope you'll find interesting:
- >
- >Could a fuel-burning, zero-emmisions vehicle be built if it were driven
- >by an external-combustion engine?
-
- No. A vehicle with *reduced* emissions of NOx and HC can be built, but
- more CO2 is produced. A zero emissions vehicle can't produce *any* site
- of use emissions.
-
- >Could recent advances in materials make for smaller, hotter, and more-efficient
- >systems? If a boiler was perfected, couldn't it be easily upgraded to burn
- >natural gas or even hydrogen?
- [description of exotic system deleted]
-
- Go to the library and look up "Stanley Steamer." These vehicles used
- a flash boiler and could start up from cold in under 1 minute. They
- could out accelerate any gasoline engined vehicle of their day, and
- had a top speed over 120 MPH. They were produced around the turn of
- the century. A recent emissions test on one of these antiques showed
- it to handily meet current California emissions standards. But it's
- fuel economy is horrid. Steam engines are fun, but the reason they
- have been replaced in railroading and in automotive usage is that
- their Carnot efficiency is poor. That means they burn a lot of fuel
- and generate a lot of CO2.
-
- Gary
-