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Solar Mike Guru Joined: 08/02/2015 Location: New ZealandPosts: 1138
Posted: 01:34am 14 Apr 2021
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We have a number of 12M long steel high sided containers sitting in a paddock all on poles 400-500mm off the ground. I would like to have a go at building a couple of small vertical turbines and bolt them to the roof of one of the containers to augment the PV array, to charge the battery bank. Output 200-300 watts each seems a good design goal, the location is in in a valley and always seems windy, if its not sunny its windy it seems.
My thoughts are something 1.5M tall and 1M swept dia. There is a guy with an industrial laser just down the road, I could draw up a design pattern with CAD and he could cut everything out from a sheet of steel, so it would clip together and I could weld it up; next door to him is an industrial powder coating business.
Has anyone here made something like this, for the size indicated is the power output realistic.
Cheers Mike
Technophiliac Regular Member Joined: 18/12/2020 Location: New ZealandPosts: 92
Posted: 08:26am 15 Apr 2021
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Why vertical when horizontal is more efficient?
I'm in the process of installing a 6m pole in the middle of a 6m container with guy wires to the corners for a horizontal turbine. I plan to use a Chinese 800W turbine. Not installed yet so can't give the verdict on the plan, but I think it will be OK. I can't see a 1.2m Fan blowing the container over, even on a 6m pole.....Davo, Wellington. You can have it perfect, on time, and at the best price. Choose any two.
Solar Mike Guru Joined: 08/02/2015 Location: New ZealandPosts: 1138
Posted: 09:30am 15 Apr 2021
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In the next 12 months there will be houses 30M away next door, those small horizontal wind turbines sound like loud vacuum cleaners, I don't want complaints. Vertical types spin a lot slower and so make a lot less noise, not worried about a loss in efficiency.
Mike
Technophiliac Regular Member Joined: 18/12/2020 Location: New ZealandPosts: 92
Posted: 10:20am 15 Apr 2021
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Have a look at the Chinese verticals and claimed power outputs. I expect if your design has some sort of similar efficiency for that size you'd be looking at 500W or more. They also sell the vertical generators separately....not sure what generator you were intending?Davo, Wellington. You can have it perfect, on time, and at the best price. Choose any two.
Solar Mike Guru Joined: 08/02/2015 Location: New ZealandPosts: 1138
Posted: 10:39am 15 Apr 2021
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Was going to make my own multi-phase generator and controller, just have to purchase some neo. magnets from China.
I did look at some Chinese designs, seems power outputs are all over the place, I wouldn't believe any of it, nor their quality.
Mike
Technophiliac Regular Member Joined: 18/12/2020 Location: New ZealandPosts: 92
Posted: 10:57am 15 Apr 2021
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I wager over half the things you use are made in China. Following your logic I am not sure why you would trust their magnets?
Like everything there is variance and care is required in selection. Avoid anything with data that is not credible or light on detail or not well presented.
However I think you might be surprised with some of the quality of some of the Chinese wind gear.
Like anywhere else, in China you also get what you pay for.Davo, Wellington. You can have it perfect, on time, and at the best price. Choose any two.
Davo99 Guru Joined: 03/06/2019 Location: AustraliaPosts: 1578
Posted: 01:47pm 15 Apr 2021
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Cant say i have ever read anything favouranle about the chinese windturdbines. Seems most people find them stupidly over rated and minimally performing.
I would trust anything Mike would do infinitely more than the commercial products especially from China.
Warpspeed Guru Joined: 09/08/2007 Location: AustraliaPosts: 4406
Posted: 03:06pm 15 Apr 2021
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First step, install an anemometer, and also get some long term wind data from your local met office (probably located at the nearest airport).
Second step do some internet research from the users on already installed wind machines that operate at similar wind speeds.
Do not trust manufacturers data. "Dragon Brand" wind turbines may put out a million peak watts, in a typhoon just moments before the machine was totally destroyed. So it then becomes a million watt rated turbine, ideal for the summer breeze your small suburban back yard.Cheers, Tony.
Technophiliac Regular Member Joined: 18/12/2020 Location: New ZealandPosts: 92
Posted: 10:42pm 15 Apr 2021
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I acknowledge and respect the comments made.
Is this review respectable: https://www.youtube.com/watch?v=B9e_owv9U7wDavo, Wellington. You can have it perfect, on time, and at the best price. Choose any two.
Solar Mike Guru Joined: 08/02/2015 Location: New ZealandPosts: 1138
Posted: 11:08pm 15 Apr 2021
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Re "Dragon branded", Well put Tony.
Our average wind speed approx 15 km/h, when the wind is present which is prob 70% of the time, have been working on site there for a year or so off and on, aluminum step ladders get blown over all the time, its bloody windy. I was hoping someone on the forum may have built something similar. will do some more research.
Mike
greybeard Senior Member Joined: 04/01/2010 Location: AustraliaPosts: 161
Posted: 11:23pm 15 Apr 2021
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Invent a 'domino wind generator'. Then get a pile of ladders and stand them up in a line next to each other.
Warpspeed Guru Joined: 09/08/2007 Location: AustraliaPosts: 4406
Posted: 12:55am 16 Apr 2021
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An oil drum Savonius would be pretty easy to make, and cost almost nothing. Do some testing with that.
Cheers, Tony.
Davo99 Guru Joined: 03/06/2019 Location: AustraliaPosts: 1578
Posted: 07:09am 16 Apr 2021
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Deleted repeated ? Post Edited 2021-04-16 20:58 by Davo99
Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.
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