Re: [AMC-List] Funniest thing I have seenin a long time- ELECTRIC TURBOS!

[Frank Swygert <farna@xxxxxxx>]

I understand that, what I was getting at is if the turbo was connected
to an air compressor instead of an engine it would still spin and
create boost. But I see your point -- the heat in this case expands air 
faster than a cool air stream would, so efficiency increases some.


On May 18, 2006 Tom Jennings wrote:

> On Wed, 2006-05-17 at 20:29, Frank Swygert wrote:
> 
> > I found this quote in the article, which explains why the remote
turbo
> > works -- pressure in the exhaust system (and volume of flow).
Those
> > thinking that the power is made by heat are just plain wrong. I
never
> > did understand how anyone can think that the heat makes the power
in a
> > turbo, it just doesn't make sense. I really don't see how heat
> > increases efficiency either, since a cooler charge is denser and
will
> > create more power...
> 
> Actually fizzicks says so. The wasted energy in the exhaust is heat
> energy -- why do you think it's exiting so fast! Gasoline + air +
spark=
> lots of heat which makes the gases get really big. If the exhaust
> temperature was reduced (say, lots of refrigeration) to that of the
> intake, the pressure would be the same too. Temperature makes the
> pressure rise. Without the temp, no pressure.
> 
> Exhaust temp out of a turbo drops a lot too, representing the heat
> energy extracted from the exhaust.
> 
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