New types of turbo's in the works., Interesting....READ!! Options

[shid]

... exhaust gasses "blowing" the turbine wheel.  Hmmm, even that description can be ambiguous...
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I'm going to run out of ways to say this. I'm trying to point out the distiction between flowing gasses simply pushing the turbine around, and energy (heat) being reclaimed by the turbine wheel. And while you could say that flowing gasses do indeed simply push the turbine around, I think it's worth making the distinction.

And after all this, bleading the heat from the exhaust before it reaches the turbine still hurts the performance of the turbine. Re-interpretation of my admittedly gray-area language doesn't change that.
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What you don't seem to realize is that a turbine would spin just fine even if there was no heat energy. Energy is energy; and the turbine changes that form of energy. Thats all. Heat has no special part in driving the turbine any more than blowing on a uhh.. one of those hand head windmill spinner things does.

You're getting confused because you believe that the transfer of energy is straight from the hot air (heat energy) to kinetic energy in the turbine; thats not true. The heat energy makes NO direct thermodynamic transfer to the turbine wheels.

here's what it comes down to; in a supermarket there is a revolving door. People want to get into the supermarket so they cram in together; and the revolving door takes lik 4 people at a time.

Inside the store, they get fat because they open and eat all the candybars, and they only leave one at a time- but they're still the ones pushing the door.



Inside the engine, close proximity air molecules are combusted and heated so that they take up more space. This explosive force directly drives the turbine; heat has no direct relation to it.

yes, it still would be a bad idea to give the molecules a chance to cool down and group together; but thats not the same thing.

[rjbibeau]

ohhh someone seems to be a physics major...

[Hanyo]

Yes the main energy source of a turbo is to have air spinning the turbine. But the extreme hot gasses also help the turbo increase its efficency.

simply..

20 gallons of 5psi cold air will make a turbo put out 3 units of energy..
but..
20 gallons of 5psi hot air ( like car exhaust temp) will make 3.1 units of energy.

why would there be more energy put out? Well, we all know hot air likes to expand. If the turbo design manages to catch this expanding energy, the more energy it can produce.

[turboinduction]

Simple -

Exhaust gas blows on the turbine making it spin

Hot and Pressurized air makes the turbine spin faster.

And since you don’t seem to grasp the idea that your exhaust pipe really doesn't dissipate heat like you think, I’ll say it again. The spool time between the two is roughly the same. You’re arguing that this is a bad design. Sometimes it’s the only design. Hell the new LF-A has the radiators in the back! Sometimes odd designs must come into play to make things to work. The difference between to two is small, and also, maybe the difference is made up because all that heat you talk of is in the back far away from the intake.

-Ti