Air-X & noise levels [RE-wrenches]

[David Blittersdorf]

I agree with Ian that the $/rated watt is misleading as a number of turbines have a very 
high rated wind speed. The 10kw Bergey Excel (a rugged, heavy turbine) is rated 10kw 
at 31 mph. A  more realistic rated windspeed is 24 mph and would give the 10kw a 6kw 
rating.

I suggest when comparing turbines to use a common rated windspeed (say 24 mph or 
11 m/s). Also compare weight to the new rated wind speed. 

Regards,

David Blittersdorf


On 4 Mar 2002 at 16:26, Ian Woofenden, Home Power wrote:

> Hi Charlie,
> 
> >  >Proven
> >
> >Good and quiet machines www.provenenergy.com . I am in the middle of
> >installing a system using a Proven 600W at the moment. As Chris says, they are
> >not cheap relative to other makes - unless you do a comparison of cost per
> >kilo!!
> 
> I've suggested to Mick Sagrillo that he delete the "$ per rated watt" 
> category in his wind generator comparison, and instead give us 
> categories for "$ per square foot of swept area" and "$ per pound".
> 
> I think either of these two comparisons mean more than comparing peak 
> output, and using both gives a fairly intelligent view of output and 
> reliability.
> 
> We'd love to see an article in HP on your Proven installation.
> 
> Ian
> 
> 
> >Charlie
> >
> >Charlie Robb
> >Element Engineering
> >
> >77 Society Road
> >South Queensferry
> >Edinburgh
> >EH30 9XP      UK
> >
> >Tel: 0131 331 5835
> >Fax: 0131 331 5848
> >Mobile: 07887 991866
> 
> -- 
> Ian Woofenden <ian.woofenden at homepower.com>, Fax: 360-293-7034
> Associate Editor, Home Power magazine, The Hands-On Journal Of Home-Made Power
> Editors are Professional Idiots - We misunderstand text so our readers won't.
> 
> HP subscriptions: $22.50 per year, PO Box 520, Ashland, OR 97520 USA
> 800-707-6585 (US), 541-512-0220, or download current issue at 
> <http://www.homepower.com> 
> 
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> 

David Blittersdorf
NRG Systems, Inc.
110 Commerce Street
Hinesburg, VT 05461 USA
Tel: 802-482-2255
Fax: 802-482-2272
email: davidb at nrgsystems.com
Web:http://www.nrgsystems.com

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