Re: Wind energy extraction

From: daestrom (daestrom_at_NO_SPAM_HEREtwcny.rr.com)
Date: 01/21/05 

Date: Fri, 21 Jan 2005 15:05:54 GMT

"habshi" <habshi@anony.com> wrote in message
news:41f0256a.7026603@news.clara.net...
> Finally I think , after much thought I have come with what I
> think will work .
> How about a funnel . The large open end would be turned by the
> computer always into the wind . The small open end would have a pole
> at its lower edge which would hold a small windmill , maybe horizontal
> blades.
> The force of the wind would funnel air into the large end and
> out through the small end and the turbine would turn very very fast
> and it would be more economical than building large blades.

Nonsense. A funnel of, oh say, 5m diameter with a 'high speed windmill'
would *definitely* cost more than a three-blade windmill of 5m diameter.
The weight of the funnel and support structure would be much larger than
that of a windmill/turbine of similar cross-sectional area. The funnel
would *not* collect more energy from the wind than a windmill of the same
diameter. On the contrary it would collect much less (the exit losses from
the 'high-speed windmill' alone would be horrendous.

Weighs more, costs more, turning-mechanism would require more power and
strength, collects less energy. This is supposed to be a good idea?? *NOT*

daestrom

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  • Re: Wind energy extraction
    ... > How about a funnel. ... > computer always into the wind. ... A funnel of, oh say, 5m diameter with a 'high speed windmill' ... would *definitely* cost more than a three-blade windmill of 5m diameter. ...
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