Wind turbine with a fan?

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Zaïonce
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Wind turbine with a fan?




by Zaïonce » 05/07/07, 13:31

Hello,

i'm new here and my topic may be rubbish but ...
if you use a commercial fan (without plugging it in) like a wind turbine, you get current at the outlet?
Since the electric motor activated by the blades becomes generator, it seems to me that it must work (I know NOTHING in electricity).
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elephant
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by elephant » 05/07/07, 17:32

your basic reasoning is not wrong, but you still have to see what type of motor it is, it may be necessary to develop a rotor excitation circuit, and it is not sure at all that the performance is good.
In addition, will we reach a sufficient number of turns?

Try it: you will always learn something

I would do the following first experiment: I would plug in a light bulb
from 220V: 15 watts (a good old filament bulb!) and I will measure the voltage obtained
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by Christophe » 05/07/07, 18:09

elephant wrote:I would do the following first experiment: I would plug in a light bulb
from 220V: 15 watts (a good old filament bulb!) and I will measure the voltage obtained


Should use a 2nd fan to ... blow :D
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Zaïonce
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by Zaïonce » 05/07/07, 18:50

Well, it CAN work but there is no guarantee.
So I will try ...

Goods.
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by Other » 05/07/07, 19:08

Hello

It will be necessary to put a capacitor in parallel on the output wires and to turn the fan quickly enough 1500 rpm and more.
Don't expect to get out of it just enough to light up LEDs : Mrgreen:

Driving a propeller requires a lot of energy and driving an engine requires a large propeller

The generator on my bench is a 1/2 hp engine and my 125cc engine barely drives the engine just with two 2 watt lamps.

Andre
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by elephant » 05/07/07, 19:30

Small historical reminder, purely cultural:

Hippolyte Fontaine had the idea to overturn the dynamo of Zénobe Gramme to make it an engine
(originally ZG had invented the dynamo to make electrolytic deposits)

http://fr.wikipedia.org/wiki/Z%C3%A9nobe_Gramme
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by Flothekid » 07/07/07, 18:38

I already tried to rotate fan blades, impossible, too heavy!

Some have no attack or trailing edges!

In short, it captures the sale very badly !!!

Might as well build a small wooden wind turbine that will really turn, then, for the mechanics you have to be a minimum handyman, it's true .......
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by Alain Coustou » 20/07/07, 11:48

We can also try to use the fan (or other blades) by manufacturing a streamlined wind turbine. If the air duct is tapered, you can even benefit from the Venturi effect. This effect will concentrate the energy of the wind on a smaller surface (that of the fan) while accelerating it.
I haven't tried it myself yet, but it should work, because it works very well in the wind turbine tower model that I made, when I place the side of the air intake area facing the wind, the other three sides being closed.
To see the model (and the doc on the wind turbines), visit the site:
http://groups.msn.com/ToursAerogeneratrices2/

Alain
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