17-October-2007, 03:10 PM
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Established Member
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Join Date: Jan 2003
Location: Gallatin, TN
Posts: 2,015
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Quote:
Originally Posted by mfumbesi
I am intrigued by you steam engine.
How will it work?
On the link you provided environmental benefits and performance benefits, but there was no "actual design" information.
The engine you used as a reference from 1925 sounds interesting, but I am too lazy to google.
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See here.
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I took the Doble to the smog station to have its exhaust certified and its emissions are 13 parts per million, which means my 1925 Doble with its 80-year-old technology passes all current smog laws. Nothing like 2 million BTU to burn up all the fuel. There's nothing left over, literally. It's just pffft. Gone.
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And here.
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A 1972 paper by I.E. Smith from Cranfield Institute of Technology summarized past efforts and proposed a mechanism for “Hydrogen generation by means of the aluminum/water reaction”.
However, air-exposed aluminum forms a passivating skin of alumina that protects it from further rapid oxidation. A viable aluminum-water hydrogen system must overcome the protective layer to allow the reaction to continue, while still meeting the other constraints for on-board hydrogen storage or generation. A number of efforts over the past decades have explored the potential of developing an amalgamated aluminum surface that can sustain the reaction with water.
The basic approach taken by Purdue professor Jerry Woodall, the inventor of this aluminum-gallium process, is to disrupt the passivating oxide skin with the gallium component of the alloy.
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