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- Newsgroups: sci.energy
- Path: sparky!uunet!stanford.edu!eos!aio!zaphod!mancus
- From: mancus@zaphod.JSC.NASA.GOV (Keith Mancus/MDSSC)
- Subject: Re: More External-Combustion Info
- Message-ID: <1992Nov17.205149.18798@aio.jsc.nasa.gov>
- Sender: news@aio.jsc.nasa.gov (USENET News System)
- Organization: nasa-jsc
- References: <1992Nov17.071642.22601@leland.Stanford.EDU> <1992Nov17.180135.25760@kakwa.ucs.ualberta.ca>
- Date: Tue, 17 Nov 1992 20:51:49 GMT
- Lines: 53
-
- In article <1992Nov17.180135.25760@kakwa.ucs.ualberta.ca>, sherwood@space.ualberta.ca (Sherwood Botsford) writes:
-
- > 2. Some of these 30 second boilers work as 'flash boilers' Flame heats
- > a plate, and the water is sprayed on. With some work, I bet that you could
- > trade increased fuel consumption for faster heating.
-
- Sure, just have two heating systems.. The "pilot" system heats
- it quickly and inefficiently, then the efficient system takes over.
-
- > 4. I think that the original reason Stanley's had pilot lights was to keep
- > the boiler from freezing in winter. Some clever design is called for here,
- > with either pilot light and/or systems that self drain into a holding tank
- > won't get bent out of shape by freezing, and could be warmed easily with
- > either a plug or a torch.
-
- I can't believe this is a big problem, but only a chemist/chemical
- engineer could say for sure. We solved this problem in gasoline recips
- by creating antifreeze; although existing antifreezes may interfere with
- the steam cycle, can't we develop some other chemical additive?
-
- > 6. One of the claimed advantages of the Stanley Steamers was their noise.
- > They were very quiet. This would be a big selling point with me. They
- > were also very simple mechanically, although messy in terms of plumbing.
- > I think the entire drive train had 24 moving parts.
-
- > 7. One of the big advantages of steam is the idling efficiency. You
- > use very little fuel sitting still. This could be significant for trucks,
- > busses, and city delivery vehicles.
-
- Given the large mass, slow acceleration, high torque, low noise, etc...
- I would say that the initial version should be a replacement for large diesel
- trucks (everything from small Macks to 18-wheelers). This looks like a
- near-perfect solution, provided that the efficiency is high enough.
- And I HATE getting behind trucks belching choking black smoke!!!
-
- > Questions:
-
- > 3. Given a closed system is there a better choice of working fluid than
- > water (Something that wouldn't freeze, and could act as a lubricant.)
-
- For some applications, like these "commuter" cars that the electric crowd
- is pushing, you might want to keep the loop open and eliminate the radiator/
- condenser and associated weight.
-
- > => Sherwood Botsford sherwood@space.ualberta.ca <=
- > => University of Alberta Lab Manager, Space Physics Group <=
- > => tel:403 492-3713 fax: 403 492-4256 <=
-
- --
- Keith Mancus <mancus@cheers.jsc.nasa.gov> |
- N5WVR |
- "If I owned Texas and I owned Hell, I'd rent out Texas and live |
- in Hell." -General Sheridan |
-