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Old 05-17-2019, 10:11 PM   #1
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Wind Turbines

Anyone using a wind turbine to charge batteries?

I'm starting to see units selling between $100 and $200 in the 400-500 watt output range. Some are even offered in kits with up to 4 solar panels included.

In thinking about it it might make sense if one boondocks where there's wind but sunshine is either shaded by trees or bad weather.

Just curious and if you do, share the type of controller you use.
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Old 05-17-2019, 10:57 PM   #2
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We had turbines at an old leeds office building, 3 smaller ones. When the wind blew it sounded like you were at an airport. I am curious if they have resolved this now or not. The sound drove me nuts and I would never subject myself to that again. Do you know if the units are noisy? Just something to consider.

The 3 turbines powered exit lights and some emergency fluorescenct lights with a fairly sizable battery bank. This was 10 years ago so things have likely changed a lot by now.
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Old 05-18-2019, 12:40 AM   #3
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I have a neighbor that uses a half blade wind turbine with his class c motorhome. It has a single blade with a counter balance sort of like the attached images. He parks one of the rear tires on it's base plate. VAWT's operate quieter than HAWT's but at the expense of needing higher wind speed to get started.
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Old 05-18-2019, 11:34 AM   #4
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Quote:
Originally Posted by dbledan View Post
We had turbines at an old leeds office building, 3 smaller ones. When the wind blew it sounded like you were at an airport. I am curious if they have resolved this now or not. The sound drove me nuts and I would never subject myself to that again. Do you know if the units are noisy? Just something to consider.

The 3 turbines powered exit lights and some emergency fluorescenct lights with a fairly sizable battery bank. This was 10 years ago so things have likely changed a lot by now.
Some of the units I've seen advertised have 5 blades. I stayed in a park in Las Vegas last January and had a neighbor with a pair of wind turbines. They had at least 5, maybe more blades and they didn't appear to be any noisier than a house fan. They were turning pretty quick even in low wind.

I know that "The Company" which was GI slang for one of our "Alphabet Agencies" working in Vietnam during the war had an airplane with a 6 bladed prop and it was quiet. In the late 70's I watched one take off from a local airport and it was amazingly quiet.

Apparently the more blades the quieter they can be and I suppose blade shape makes a difference too.
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Old 05-18-2019, 01:53 PM   #5
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Quote:
Originally Posted by TitanMike View Post
Some of the units I've seen advertised have 5 blades. I stayed in a park in Las Vegas last January and had a neighbor with a pair of wind turbines. They had at least 5, maybe more blades and they didn't appear to be any noisier than a house fan. They were turning pretty quick even in low wind.



I know that "The Company" which was GI slang for one of our "Alphabet Agencies" working in Vietnam during the war had an airplane with a 6 bladed prop and it was quiet. In the late 70's I watched one take off from a local airport and it was amazingly quiet.



Apparently the more blades the quieter they can be and I suppose blade shape makes a difference too.


I assume less pitch angles to achieve the same thrust, but thatís really just a guess.
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