ON 20030827@10:05:24 AM at page:
http://www.piclist.comidea/mc-heat-inject.htm
JMN-EFP-786 James Newton published post 37859.5480671296
j.w.holmes@att.net
Hi chevboy_67,
I don't think the engine James is describing has a compression stroke at all. However a four cycle steam engine does use the compression stroke. As far as your question goes' using a big compression ratio such as a diesel engine does' I do not think this will be a sufficant source of heat(alone) to flash cold water to steam. It mainly has to do with the density of air or compressed air. Its just not nor will ever be, as dense as the material the engine block is made from, which is a good conductor of heat. Try this example, you can start a really big fire with a single match, but you can't make much steam from a single match. In other words the heat derived from compression in a diesel engine is adiquate to cause combustion. But "most likely" there won't be enough heat to flash steam of sufficant quantity, or repeatedly in a cyclic fashion. One of the big benifits of James engine design is the mass of the engine block itself acts as a thermal battery. This will allow the engine to run for a duration of time. But the heat that is derived from compression is very benifical to a four cycle steam engine cycle. But I just don't think its enough to run the engine solely from that, as the only source of heat. If the engine has a compression stroke at all, I think it's good, but it is unclear to me where deminshing returns occur, with a really big compression ratio such as 20 to 1, I have had really good results with this, at 8 to 1 or less. No matter what, if you heat the block and the compression stroke is still intact, then it will generate surplus heat that wouldnt normally be there. Hey, the board is active I'm impressed.
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http://www.fieldlines.com/story/2003/6/26/10248/0825
More or less the same idea. Some interesting variations. The use of an existing engine was not mentioned as far as I could see."
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