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Old 20-03-2006, 21:30   #16
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I won't pretend I understand all of that, and I read the first file but I only skimmed the second file, but I still don't see that the darrieus generator is all that less efficient than any of the other types.

I may be reading the chart and the book wrong though, so I'll just drop the subject.

Thanks for the reading material though.
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Old 21-03-2006, 10:03   #17
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No problem Rick.

At least you tried looking for it. At least it was a good thought!!
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Old 21-03-2006, 12:35   #18
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Here's a verticle axis windgeny for boat use.
http://www.decel.co.uk/default.asp?categoryID=2
Personaly, I don't know why more haven't followed the idea of verticle axis. It gives a far greater blade surface area, which equals power, plus in a smaller space.
I played with verticle axis generators in an engineering company nearly 30yrs (ouch) ago. We used them to lift water to cattle troughs on farms. It was totaly mechanical, No electrical generation. They worked very well.
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Old 21-03-2006, 16:27   #19
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Wheels, I have talked to people with vert axis gennies similar to the type in your link, and they reckoned that they were about as useful as a f@rt in a thunderstorm.
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Old 21-03-2006, 22:41   #20
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I like that, Imust remember it.
In knew I shouda added I knew nothing about those forgens.
So what were complaints based around. Are the things too small or what??
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Old 22-03-2006, 03:53   #21
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IIRC they are only sold as trickle -feed, but most people reckoned that the trickle was a vast overstatement.
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Old 19-05-2006, 12:55   #22
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Vertical axis wind generator

I tried that once, with thin walled , half aluminium tubes radiating outward , anemometer style. It was grosly innefficient. I went for a srtandard wooden propellor which was light years more efficient. That was 17 years ago and I'm still using it.
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Old 19-05-2006, 16:41   #23
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Ventialtors

I have seen caps on vertical ventialtion shafts which seem to have blades and "free wheel" regardless of the direction of the wind. The blades on one side "scoop" the moving air forcing it to spin and the opposite side the wind is deflected.

I don't see why a tall vertical shaft with vanes couldn't be used to spin much like the prop types of horizontal wind generators... and drive the alternator or whatever generators the electricity.

Perhaps the blade area needs to be sufficiently large to drive the altenator and overcome the resistance. Not an engineer so I can't show this would work... but intuitively it seems it could.

No?

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Old 23-07-2012, 23:40   #24
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Re: Vertical Axis Wind Generators

Hello,

As for VAWT on a sail boat or motor yacht...

Find more information about the Mast-R vertical turbine...



I have contacted them, but I still look for any info on people that actually have them on their vessel...

Alan
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Old 25-02-2017, 00:10   #25
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Re: Vertical Axis Wind Generators

Went to search if the "Mast-R" wind turbine had finally had a few takers that put up some data of the units... their website is "taking a break" and still no data available. It is unfortunate, because it has its possibilities !!! A bit disappointed actually !!
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