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Old 08-25-2011, 08:23 PM   #1
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i have a rotary 5 KW wind turbine witch need 10 m/s wind speed (300 RPM ) but in my city wind speed is 6 M/S (200 RPM ) My question is if i add a low speed motor to sport or increase RPM up to 300 RPM.if it is possible then how many HP motor needed.
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Old 08-25-2011, 10:19 PM   #2
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Are you gonna plug that motor into your neighbors outlet? That is so Homer Simpson...

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Old 08-26-2011, 07:23 AM   #3
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So, you're going to use grid power to get wind power?
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Old 08-26-2011, 07:46 AM   #4
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Quote:
Originally Posted by brric View Post
So, you're going to use grid power to get wind power?
With the incentives available this now makes sense.
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Old 08-26-2011, 08:10 AM   #5
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With the incentives available this now makes sense.
Maybe in a perpetual motion machine world.
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Old 08-27-2011, 08:16 AM   #6
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You can change the blade size and pitch for your lower wind speed situation.
Also, as long as the blades are turning, you are generating power, just not the most efficient amount.

This can still turn out to be profitable for you by using the power generated to run the meter backwards (and yes that is legal).
You'll need a knowledgeable electrician to help you set this up.

Something funny I've found out about this. Even small towns now are setting up wind turbines to appear "green". These are typically small turbines.
But the point is, the city/county electricians now know how to wire these. I am putting a small turbine on my roof (400 watts peak power), that will be wired to
run the meter backwards. The city electrician is doing it freelance.

Garrett
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Old 08-28-2011, 11:45 AM   #7
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How long do you predict it will take for you to have the 400 watt turbine paid off, by turning the meter backwards? I am real interested in doing this; however I heard for most wind turbines you need a constant 15 mph (at least) wind, and that going the solar panel route makes more sense because wind is never guaranteed, but sun is.

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Old 08-28-2011, 12:45 PM   #8
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I have no idea how long it will take to pay off.
I paid about $400 for it on ebay. Came from China.

Seems well made.
Solar panels are great, but more expensive too.
The wind blows night and day. This is more an experiment in cutting electric bills rather than trying to cut my energy costs to zero.
I am trying to built it maintenance free (or nearly so).

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Old 08-28-2011, 02:15 PM   #9
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A 400 watt generator. Wow almost enough to power 4 light bulbs.
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Old 08-28-2011, 02:29 PM   #10
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Hi,
Solar and wind consulting/installation is what I do for a living. You should just sell what you bought and try to get your money back. Its a waste of time and effort. If you are in a subdivision you are probably better off with solar or simply becoming more efficient at home. Sorry.
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Old 08-28-2011, 03:08 PM   #11
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Hmm, I think you guys are wrong.

The point isn't that it can power my house (I have a diesel generator for that when there are outages), it's that it's there to lower my electric bill.

It's an experiment, and a pretty inexpensive one at that.
After 1 year I'll have the data I need to make any changes I want to.

I like it.

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Old 08-28-2011, 03:19 PM   #12
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Ok then go ahead and hook up an electrical motor, what do I know.
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Old 08-28-2011, 05:34 PM   #13
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The thread got hijacked. The OP hasn't responded...

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