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- Newsgroups: sci.energy
- Path: sparky!uunet!cs.utexas.edu!sdd.hp.com!apollo.hp.com!hpwin052!hpqmoea!dstock
- From: dstock@hpqmoca.sqf.hp.com (David Stockton)
- Subject: Info on the GM SE-101 Steam Car
- Sender: news@hpqmoea.sqf.hp.com (Nick Mcculloch)
- Message-ID: <Bxz1ww.3ox@hpqmoea.sqf.hp.com>
- Date: Thu, 19 Nov 1992 16:31:43 GMT
- Organization: Hewlett-Packard LTD, South Queensferry, Scotland
- X-Newsreader: TIN [version 1.1.8 PL6]
- Lines: 25
-
-
- Turbines have power curves that give 100% rated power at 100% rated
- revs and almost nothing below that speed. Small turbines, scaled for
- the power levels needed in a passenger car will run at immense revs,
- gearing will be extremely difficult. This is just as true of steam as it
- is of gas turbines. At these speeds, even with small machinery, the
- timeconstants do not suit traffic. Let's solve a different problem
- instead:
-
- If magnets could be made to stand such centrifuging, modern fast
- power rectifiers would make possible 100,000 RPM poly-phase alternators
- for battery charging. Now a steam or gas turbine/electric compound is a
- rather attractive proposition. Efficiency can be optimised for fixed
- revs and for a bit less than the average power consumption. Electric
- motors can give all the nice tricks wanted.. no gearchanges, real
- regenerative breaking, high acceleration because of modest battery size.
- If you can get a bit of free power from solar cells, or maybe a windmill
- at home, you can run to partial discharge at the end of the day and
- savefuel.
-
- Buy an electric car, throw most of the batteries away and fit an
- attache case sized turbine generator to get a high efficiency compound.
-
- Could be quite handy to power implements and tools in the field, also
- during power cuts.......
-