home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.energy
- Path: sparky!uunet!stanford.edu!leland.Stanford.EDU!leland.Stanford.EDU!ledwards
- From: ledwards@leland.Stanford.EDU (Laurence James Edwards)
- Subject: Re: steam electric hybrid ...
- Message-ID: <1992Nov23.231323.24185@leland.Stanford.EDU>
- Sender: news@leland.Stanford.EDU (Mr News)
- Organization: DSG, Stanford University, CA 94305, USA
- References: <1992Nov20.182634.18984@michael.apple.com> <1992Nov23.124242.12259@bsu-ucs>
- Date: Mon, 23 Nov 92 23:13:23 GMT
- Lines: 35
-
- In article <1992Nov23.124242.12259@bsu-ucs>, 01crmeyer@leo.bsuvc.bsu.edu (Craig Meyer) writes:
- |>
- |> > How big would a steam turbine and generator be for, say 10-15 kW?
- |> >
- |> > I would expect it to be far smaller than the mass of batteries
- |> > it would replace in a pure electric car.
- |>
- |> It's the boiler that takes up the most space, not the turbine.
-
- I think here the point was that the weight would be smaller not the size.
- I'm no expert, but in any case I don't think boiler size would be that much
- of a problem Stanley Steamers and other steam cars from the 1920's were no
- bigger than competing IC auto's.
-
- |> [...]
- |> > The idea of an external combustion generator onboard an electric
- |> > hybrid solves a bunch of problems (low smog, lighter weight than
- |> > an all-electric, good acceleration from batteries, good efficiency
- |> > from turbine, long range on fuel, all-electric mode for short trips, etc.)
- |> > so where does it fall down?
- |>
- |> Well, just how practical is the hybrid concept at all, anyway? Knee-jerk
- |> engineering tells me that the added complexity and cost of a fuel-driven
- |> prime mover AND an electrical system makes it all look silly!
- |>
- |> If the steam system is clean and efficient, why bother with the batteries?
- |> (I know this a pretty juvenile question, but I'd appreciate the advantages of
- |> hybrid systems laid out in from of me.)
-
- Yeah, I was wondering about that too. The hybrid would have the advantage of
- instant cold starts, and maybe the steam engine could be optimized for
- weight/size/efficiency if it is operating at constant load/speed but I'm
- just guessing here.
-
- Larry Edwards
-