vertical axis wind (and solar) turbine [RE-wrenches]

[Ezra Auerbach, DragonSun Consulting]

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Hello all,
All this hype and oversell will indeed give small wind a bad name,  
which could be difficult or impossible to overcome. It would really  
behoove the leading manufacturers of wind machines to work towards  
developing and implementing a quantification protocol that would  
estimate energy output at a set of standard test conditions (ie. XX  
mph at XX tower height, YY tower height) etc. Once a commonly agreed  
upon protocol was in place I would hope to see manufacturers of  
repute test to the standards and publish the estimated energy output.  
I would suspect that this is the sort of project (standards  
developing) that could draw support from those who distribute public  
research funds.

Regards,

Ezra




Ezra Auerbach
DragonSun Consulting
Lasqueti Island, B.C. V0R 2J0

ezra at lincsat.com
250 333 8650



On 4-Dec-06, at 10:17 PM, Ian Woofenden, Home Power wrote:

>
>
> Oh come on, Matt. With the PV on the turbine, it might be the most  
> productive rooftop VAWT ever... ;-)
>
> It's sad that we are seeing such an onslaught of these hare-brained  
> ideas. Couple it with a major manufacturer pushing a 35-foot tower,  
> and I see a big black eye for small-scale wind-electric systems on  
> the horizon.
>
> We need to keep installing turbines that we know work on towers  
> that are tall enough, and continue to educate people that there is  
> no easy way. You need a big rotor on a tall tower to get  
> significant wind energy. If you can't do that, it's probably not  
> worth trying to tap the wind.
>
> Ian
>
>
> At 10:00 PM -0800 12/4/06, Matt Tritt wrote:
>> Oh boy. Guys, you will notice that neither of these architectural  
>> statements have a published power curve. First warning sign. The  
>> Blue Thingy is a twisted Savonius; not an efficient wind turbine  
>> at best and basically worthless in low winds, but the idea of  
>> covering it with PV seems so - so - words fail me. Lame maybe?  
>> Their product comparison chart is full of inaccuracies and/or bad  
>> information as well, so I would give this beauty the coveted  
>> Blatantly Seeking Investors award.
>>
>> The Quiet Revolution machine, though (obviously) claiming to be  
>> quiet, publishes no actual dB measurements of the turbine. It is  
>> most likely extremely expensive, and the individual parts would  
>> also appear to be big and/or long enough to cost a fortune to ship  
>> to this side of the US (West). To the best of my knowledge, you  
>> just can't beat a good HAWT for efficiency, cost effectiveness and  
>> net energy production (even if they aren't so sexy).
>>
>> Matt T
>>
>> Jim Duncan wrote:
>>
>>> Tom Elliot wrote:
>>>
>>>> Does anyone have any information on this? http:// 
>>>> www.quietrevolution.co.uk/index.htm
>>>>
>>>> Tom
>>>>
>>>>
>>> Heck that's nothing. Check out this one.
>>> http://www.bluenergyusa.com/
>>>
>>> Jim Duncan
>>> North Texas Renewable Energy Inc
>>> Fort Worth, Texas
>
> -- 
>
> Ian Woofenden <ian.woofenden at homepower.com>, Senior Editor
> Home Power magazine; Subscriptions: $22.50 per year, PO Box 520,  
> Ashland, OR 97520 USA
> 800-707-6585 (US), 541-512-0220, or download free sample issue at  
> <http://www.homepower.com>
>
>
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