Horizontal wind turbine on vehicle

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iridium
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Horizontal wind turbine on vehicle




by iridium » 03/12/08, 15:21

ADD:
The purpose of this subject is NOT to motorize a vehicle with a wind turbine.
But to recover a little energy from the wind facing the vehicle regardless of its speed.

I searched but I found nothing.
Generally we see some stamp that thinks they can recover the energy assimilated by an electric vehicle by adding a wind turbine on the roof ....
No comment.

for my part.
I thought I used the brake represented by the air against the car to integrate a horizontal wind turbine system under the grille.
of course in the case of an electric vehicle.
this energy is lost anyway.
The vehicle Cx will not be drastically changed.
the cost of production is low.
putting it into practice is simple.
hestetically if his pass went well.

is too good to be true.
I forgot something.
Anyone have an opinion ?????

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Last edited by iridium the 04 / 12 / 08, 10: 24, 1 edited once.
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the boulle
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by the boulle » 03/12/08, 15:56

Hello

I know pa tro electric vehicles

but instead of braking (discs pads) why not recover energy by alternator which takes charge during braking

...

just an idea
Last edited by the boulle the 03 / 12 / 08, 16: 10, 1 edited once.
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iridium
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by iridium » 03/12/08, 15:58

energy recovery by braking is already done.
For example on the prius, when you brake you brake first in energy recovery and if you want to brake harder, then you brake with conventional braking by pressing harder on the pedal.

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by the boulle » 03/12/08, 16:12

as much for me it was an idea ...
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by iridium » 03/12/08, 16:32

all ideas are welcome laboulle.
The main thing is to participate.
thanks to you.

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by Remundo » 03/12/08, 17:48

Hello everyone !

The wind turbine will not always be favorable, but may be in certain situations.

For an automobile, the speeds and accelerations required, sometimes in the absence of wind, make this mode of propulsion nevertheless nonetheless suitable.

A comprehensive study on the subject


See also the subject Robiplan by Pascal HA PHAM
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iridium
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by iridium » 04/12/08, 08:17

hi remundo.

It is not for the purpose of propelling the machine but only to recover the lost energy.
I think we can expect between 1 to 3KW to recover.
for its better to call on regulars of the wind turbine it can give recoverable power I think.
Thank you for the link.

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by dirk pitt » 04/12/08, 08:36

the on-board wind turbine to recover braking energy is not a good idea I think because it does not recover braking energy.
the energy that can be recovered during braking is the energy of the vehicle inertia.
how does a wind turbine in the relative wind of the vehicle recover inertia?
it only recovers energy from speed.
if the speed is low the energy recovered by the wind turbine will be low while the energy recoverable by the inertia is potentially significant (depending on the deceleration and the weight of the vehicle.)

to recover the energy of inertia, a member must be connected to the wheels.
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iridium
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by iridium » 04/12/08, 08:50

no dirk pitt, was not able to recover the energy from braking.
it is me who explains me badly or well!?!?!?
is only to recover energy from the wind facing the vehicle at constant speed.
has lost energy.
the vehicle must fight against this force, as much benefited from it to absorb a little bit.
moreover, on series vehicles, we are limited to Cx by the norms of colission with a pedestrian.
this technique allows to recover even energy on journeys without braking.
of course the power recovered I estimate it between 1 to 3KW given the speed of the vehicle. "You have to ask someone who knows a lot about wind turbines"

system in addition to braking recovery ...
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by The Guit » 04/12/08, 10:06

@Iridium

I have thought about your idea of ​​a wind turbine and it seems difficult to me.

The movement of the car will supply the wind turbine with air so the wind is created by the car itself. So far, so good.
However, in a perfect system, the energy lost by the car in the form of air friction would be entirely given to the wind turbine, which would power the engines.
Except that unfortunately the reality is much more ... real !!

All the energy lost by friction is not recovered by the wind turbine. So every moment the car drives, it will lose more energy than the same car without a wind turbine!

But we must add a flat. What you are considering can work in one case: the wind turbine is not facing forward (its axis is offset from the longitudinal axis of the car: imagine it to be perpendicular for example) and the cross wind and large enough to produce more energy than energy lost by friction from the longitudinal wind on the wind turbine.

You just have to do calculations to see if, precisely, this wind would produce enough energy.
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