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- Newsgroups: sci.energy
- Path: sparky!uunet!grebyn!daily!sgs
- From: sgs@grebyn.com (Stephen G. Smith)
- Subject: Re: More External-Combustion Info
- Message-ID: <1992Nov19.231853.15777@grebyn.com>
- Organization: Agincourt Computing
- References: <1992Nov17.071642.22601@leland.Stanford.EDU> <1992Nov17.180135.25760@kakwa.ucs.ualberta.ca>
- Date: Thu, 19 Nov 1992 23:18:53 GMT
- Lines: 21
-
- In article <1992Nov17.180135.25760@kakwa.ucs.ualberta.ca> sherwood@space.ualberta.ca (Sherwood Botsford) writes:
-
- >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 <=
-
- The reason for using water is its very high heat of vaporization --
- roughly a measure of how much energy it takes to vaporize it. The
- higher the heat of vaporization, the less stuff you need in your engine
- for a given power output. Water is also cheap, nontoxic, nonflammable,
- has halfway reasonable boiling and freezing points, and doesn't
- decompose at high temperatures.
-
- I seem to remember that there are a couple of CFCs that are almost as
- good as water (Hey! Put that down! OUCH! :-) but not much else.
-
- --
- Steve Smith Agincourt Computing
- sgs@grebyn.com (301) 681 7395
- "Truth is stranger than fiction because fiction has to make sense."
-