I think fan usage is getting turned around. Some seem to be talking
about a driven fan used to drive cooling air through the radiator and
others are talking about a fan being driven by air to drive a generator.
Regardless both fans take energy from the engine.
As a kid I had this idea of making an electric driven car and putting
generators on the wheels to create the electricity. Then that spoil
sport, Issac Newton went and ruined the whole idea!!
I think you are misunderstanding. I haven't seen anything about the
fan driving air through the radiator, only that positioning a fan there
would block air from flowing through the radiator (to some extent).
Yeah, I just got a bit confused at the arguments. Using fans there in
comparison to one on the roof.
Anyway, the point is that if air movement is used to generate
electricity, no matter where the fan is, under the hood or on top, it
will require additional energy from some source. That would be whatever
is used to power the vehicle. The the energy would be in proportion to
the amount of electricity generated.
Ol' Newton again requiring all energy in the system be constant.
snipped-for-privacy@UNLISTED.com wrote in news:kbaq12pqdsp8uaol6rsg6tc24aa70i26al@
Which is why you should immediately look for the fatal flaw in the concept.
Adding a windmill to a car will *dramatically* increase the air resistance,
which will require that much more electrical power to drive the car. Since
a windmill is (much) less than 100% efficient at extracting energy from the
wind, you will never gain as much power as you have lost.
Better idea -- put a sail on your car, and learn to drive at speeds slower
than the prevailing wind. Of course, tacking on public roads could lead to
some interesting conversations with the patrol officer :-)
Instead of a windmill how about a RAT (ram air turbine) Military
aircraft have used these for years. Perhaps one could be engineered to
provide charging while the car is in motion.
Ideally a 100% offset. But a cost effective extension of range would
still be a worthy consideration.
actually some vehicles to regernative braking, slowing engages a fly
wheel that spins up, rather than braking by using calipers and pads,
whoase waste energy is heat/
the feds had a dumb idea, put windmills along roads, cars passing by
would make the mills spin generating power.
which unfortunately would slow the vehicles, and be a hazard.
the idea died before they spent a gazillion dollars trying it out
I didn't know that, I just assumed that the lack of forward motion
while using my lungs to blow against the windshield was simply evidence
that I didn't have enough air volume so the fan was the next logical
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