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- From: sherwood@space.ualberta.ca (Sherwood Botsford)
- Newsgroups: sci.energy
- Subject: Re: More External-Combustion Info
- Message-ID: <1992Nov17.180135.25760@kakwa.ucs.ualberta.ca>
- Date: 17 Nov 92 18:01:35 GMT
- References: <1992Nov17.071642.22601@leland.Stanford.EDU>
- Sender: news@kakwa.ucs.ualberta.ca
- Organization: University Of Alberta, Edmonton Canada
- Lines: 51
- Nntp-Posting-Host: fenris.space.ualberta.ca
- X-Newsreader: TIN [version 1.1 PL6]
-
- Some observations:
-
- 1. My diesel pickup requires that I turn the key, and wait 17 seconds for
- the glowplugs to heat up. In winter I may have to do this three times before
- the engine will start. 30 seconds is no big deal. But then, I don't use my
- truck to go 6 blocks to the corner store. I can see where it wouldn't
- be popular with some people.
-
- 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.
-
- 3. As long as the lubricant is immiscable with water, I don't see a problem.
- A sump, a centrifugal filter, a final separation filter. Bush pilots used to
- filter water from their fuel by wetting a piece of thin fine weave cloth with
- gasoline. The gas could go through, the water wouldn't.
-
- 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.
-
- 5. Good insulation around the engine would help efficiency. The closer the
- engine is to the temperature of the working fluid, the less energy you lose
- to heating metal.
-
- 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.
-
- Questions:
-
- 1. What kind of gas mileage did the Stanley's get compared to other
- vehicles of the time?
-
- 2. Given reasonable engineering assumptions about the change in the art,
- what would the comparison be now?
-
- 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.)
-
- --
- => Sherwood Botsford sherwood@space.ualberta.ca <=
- => University of Alberta Lab Manager, Space Physics Group <=
- => tel:403 492-3713 fax: 403 492-4256 <=
-