Quote:
Originally Posted by bubba428
ok...your measuring power output of the actual burning...thats not how it works in an engine...cylinders and piston work off the explosive properties not the heat emissions. what if there was a fuel that could explode 50X its volume in a combustion cycle and only produce 1BTU/h. are you saying you would need more of that? heat is a byproduct of combustion, we all know that, internal combustion engines do not run off heat now do they, the run off the explosive expansion of a compressed vapor.
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Bubba,
I'm not basing this off of anything other than Physics. You can argue all you want but that's the way it is. You are confusing what factors are actually at work. I think you are confusing BTUs with BTUs/hr. This is a reason why people use Joules when talking about a unit of work instead of BTUs. They are easily confused. I'm not talking about heat. Or pressure. I'm talking about work done in a given unit time. In an engine that's the amount of force generated from combustion converted into rotational motion.
Like I said- It's been a while since I took my Physics courses. That fuel you are talking about can probably never exist, because it's BTU/h number would be based off of the amount of work it can do in a given time during combustion, which would be high due to the force of the explosion (50x as you said). So it wouldn't have a low BTU/hr number because it generates such force during combustion, and can do a lot of work.