Wind turbine: hub and blades replacement by larger?

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Ruthenian
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Wind turbine: hub and blades replacement by larger?




by Ruthenian » 21/01/12, 23:00

Hello,

I wondered for a machine designed to rotate with a certain diameter was opportum changing the hub and blades increase (in diameter)?
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dedeleco
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by dedeleco » 22/01/12, 16:13

too vague request.
Otherwise vague, it is better to understand the subject well to make changes, to avoid errors, such as wind turbine too much taken strong wind that breaks.
So learn the basics of wind, mechanical strength, aerodynamic blades, electromagnetism alternators, electronic controllers, etc ..
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Ruthenian
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by Ruthenian » 22/01/12, 22:22

Here are the starting wind turbine:

http://www.altinelenerji.com/eng/400_w.htm


and all hub + blade:

http://cgi.ebay.fr/3x-62-Wind-turbine-g ... 1e6a3f0aae

Here blades:

they look good profile:

Image
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vinzman
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by vinzman » 28/01/12, 03:01

I had read I do not know where, that the design of the pale white pale, https://www.econologie.info/share/partag ... GAh8kN.jpg

was improving design the blades of the air x

http://www.pwt.net.au/images/Blades%20-%20Air%20web.jpg

apparently, the fact that the tip of the pale are now inclined, it made sure that wind was no more noise.
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Ruthenian
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by Ruthenian » 29/01/12, 21:36

Bonjour,

On table, rotating vacuum and a GTI, we expect a significant whistle. What I fear is the speed that must reach the rotor to start producing.
I wonder if at 5 m / s wind it will produce.
I have not installed the machine. Too cold . Within a month, I think it will be installed. expected height can max 8 meters.

This weekend, I was surprised to see a wind too loinde home run non-stop. I was on ... !!! It is installed on a wheel and above the ridge about a meter at an estimated height 7 meters. All in peline city !!! with the theory of turbulence festival.
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Ruthenian
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by Ruthenian » 26/02/12, 23:03

Good evening everyone,

I have bad luck with me.

It not running !!! Even with a wind 8 m / s !!!!
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dedeleco
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by dedeleco » 26/02/12, 23:40

You ask him the alternator to charge on what and how current principle ???

It should run dry, at least, connected to nothing !!

Otherwise incomprehensible, because even a windmill paper idles !!!

You have to control the output current that will block the wind.

How is his alternator?
With iron frame ?,
If so, this iron can block the start by its magnetism?,

What is the force required to rotate by hand ???
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Ruthenian
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by Ruthenian » 27/02/12, 13:33

Hello,

I tested on table. With the hand without any problems, it hardly force. I did charge on table on a diode bridge connected to a network inverter injector. No problem. I measured about 10 12 Volts Amps on.
to 12.5 m / s it is supposed to produce 400 12 W under volts.
Its starting speed is 3 m / s.

I installed this weekend. It does not rotate. I disconnected the diode bridge and have thus made empty, it does not rotate !!!! I measured a wind gust of almost m 10 / s !!!
Last edited by Ruthenian the 27 / 02 / 12, 13: 47, 1 edited once.
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dedeleco
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by dedeleco » 27/02/12, 13:41

Ruthenian wrote:Hello,

I tested on table. With the hand without any problems, it hardly force. I did charge on table on a diode bridge connected to a network inverter injector. No problem. I measured about 10 12 Volts Amps on.

I installed this weekend. It does not rotate. I disconnected the diode bridge and have thus made empty, it does not rotate !!!! I measured a wind gust of almost m 10 / s !!!


Bizarre, because even with poorly made blades, empty, it must turn ???
Measure the minimum force in the starting hand and the couple with weights, grams or tens of grams?.
See if the shape of the blades is logical, deflecting the wind all in the same direction.
A swirling wind is less effective but it must turn to empty.
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Ruthenian
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by Ruthenian » 27/02/12, 13:49

What javais noticed is that tightening the hub. That have much more difficult to turn but the strength was much less than on my old machine with a car alternator.
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