Ooops, now that I have read all the posts in this thread-- a person can be rude on the internet, thinking that nobody knows who he is--but it seems everybody knows me here. Now, I wish I hadn't been so hard on a couple of guys.
Quote:
Originally Posted by theunchosen
Mind if I ask what temperature the engine exhaust is, for the theoretical engine?
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Hey, unchosen, you sound like an automotive engineer, very astute question. Let me look that up for you.
The calculated exhaust temperatures are--
For my Beetle engine......... 900 deg. K at 1.1 atm.
For the new engine........... 580 deg. K at 1.1 atm.
Now, if you wanted to verify engine efficiency, you would need to have the approximate combustion temperature....that's 2,000 deg K for my engine. You could apply a mechanical efficiency factor of 0.85, and the Carnot efficiency formula, to estimate brake efficiency for the "theoretical engine."
Ernie Rogers