[Ducati] themodynamics

[Ronald Betts]

That's exactly what I was saying, just not so eloquently. Dude , you can write. ;-}>
 
 
 
Peace...Ron"Desmohead"Betts 95 900 SPI've learned that I don't suffer from insanity, I enjoy it!> From: mark_middleton at hotmail.com> To: ducati at ducati.net> Date: Tue, 27 Nov 2007 19:10:41 -0500> Subject: [Ducati] themodynamics> > A good way to look at thermal efficiency is to see the engine as a box, we > put in calories as fuel, (something like 17000btus per pound perfectly > combusted) and out comes two things, horse power (work done) and heat > rejected to atmosphere. Anything we do to reduce heat rejection to > atmosphere automatically (all other things being equal) becomes work done. > Turbos extract energy (sensible temperature) from the exhaust, therefore > reducing heat rejection. Simply adding more BTUs (the propane question) does > nothing unless there's oxygen left to be burned. Remember one oxygen > molecule to one hydrocarbon makes carbon monoxide and about 12000 BTUs per > pound, two oxygens per hydrocarbon makes carbon dioxide and 17000 BTUs. More > air is a good thing, except air is only 21 percent oxygen, all that nitrogen > goes through carrying heat off to the atmosphere, not a good thing. The > answer is enough to leave a measurable trace in the stack (O2 sensors) not > too much. As you guys well know, make up for under cooled cylinder heads > with rich mixtures and all bets are off. Perfect mixtures may not work in > imperfect engines!> Propane has an octane rating of something like 120, and comes perfectly > atomized, if it helps a lot I think it proves you have other shortcomings.> > from just another Kevin Cameron wanna-be> > > > *****> > Our newest sponsor, MC Stands, has just opened its doors! It's a motorcycle> stand superstore. Every brand, every model, 95% in stock for immediate> shipment. Whether front stands, rear stands, paddock stands, dirt bike> stands, or any kind of stand or lift, MC Stands tests, rates, and discounts> everything they sell. Check them out!> > Visit: http://mcstands.com/> _______________________________________________> Ducati mailing list> Ducati at ducati.net> http://list.ducati.net/cgi-bin/mailman/listinfo/ducati> Mailto: ronaldebettsasalc0015 at hotmail.com
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