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This is NOT like regenerative braking! That energy would otherwise be
turned to heat from the brakes. In this case, well inflated tires would
now behave like poorly inflated tires. You create a new situation that
wastes energy whereas regenerative braking takes a previous energy waster
and turns it into useful energy.
Bill Layton
On Sat, 26 Feb 2011, James Dann wrote:
I'm with Charles Jordan on this one. I think it's a good idea and worth
checking out. I have a few in my lab and they are neat devices. We squeeze
a lot of things in this world -why not capture some of this 'wasted energy'
a la the regenerative braking idea of a hybrid car.
This is a great student project by the way. I have a student working on
shoes with this, and he's having a blast (there's actually a lot to
consider, not the least of which is that each piezo crystalhas an operating
(resonance) frequency where it is most efficient).
James Dann
On Sat, Feb 26, 2011 at 6:46 PM, Bernard Cleyet
<bernardcleyet@redshift.com>wrote:
Here's where detailed analysis may be necessary -- would capturing the wind
from passing 'biles increase the drag?
bc thinks, like smog checks in California, inspection of tyre pressure
would be appropriate, and whose Prius is 40 pounds not the 32 mfg.
recommended.
On 2011, Feb 26, , at 17:10, Anthony Farley wrote:
The question that needs to be asked, and I don't know the answer withrespect to Piezoelectric energy generation, is whether the energy is
captured energy that would escape into the environment if it were not
captured by the piezoelectric generator, or if it is a more direct form of
energy generation, like a generator.
produced by passing cars, or large microphones to capture the sound
For example, you could set up wind turbines that would capture the wind
generated by the passing cars. Neither of these methods would cost any in
gasoline consumption because they are capturing wasted energy. No violation
of the the First Law. I can think of many others, such as capturing the heat
that rises from the road, or heat generated by the tires on the road. Some,
like capturing the heat generated by the tires on the road, might actually
improve the gas milage of the cars.
whole story. Hell, that's why hybrid cars are more efficient! Look to the
A naive application of the first law is not always going to tell the
Second Law!
Tony Farley