alt.energy.homepower

Gordon, I'm guessing from your post that you have misunderstood what I
am trying to explain. Here is another video of a racecom type VAWT
working side by side with a savonius type wind generator. You be the
judge. The best comparison to this design would be the whirly bird
ventilators that you see on the roofs of some houses.
/watch?v=0KVaVNTGh2s&feature=related

On Feb 26, 12:12 pm, Gordon Richmond wrote:
> >This design seems to be of interest. It accepts wind from any
> >direction and handles turbulent wind quite well. It makes absolutely
> >no noise. . 0 dB. It cannot reach overspeed like other convention
> >wind turbines. Once it reaches it's designed speed, all excess
> >airflow simply flows around it. The downside is that they are
> >relatively expensive at $5,000 per unit. So, I have decided to make
> >the attempt of building my own. The biggest challenge will be
> >balancing the entire unit to minimize any vibrations. I've started my
> >project by purchasing three 12 foot sections of three inch diameter
> >black plastic plumbing pipe. I've cut these sections into 4 foot
> >lengths. I will then cut each pipe lengthwise into three equal width
> >blades. I should then have 27 curved plastic blades to begin my
> >project with. So, far the total cost has been $69. I estimate no
> >more than $500 for my entire project, which means that I can build ten
> >units to match the cost of one professionally built unit. I'm an
> >adventurous sort of fellow, so here goes... /watch?v=q7ffNWkefyY
>
> >On Feb 25, 6:50 am, rsegoly <...@> wrote:
> >> Hello,
>
> >> Sorry for being layman but I am just starting to look at this topic.
>
> >> Is there any good article or site summarizing implementations and
> >> existing solutions, for home wind turbine (a turbine which can mounted
> >> on a roof with reasonable cost).
>
> >> I'd like to see beyond the actual solutions approach from different
> >> governments, and cost studies, as we starting to look at this topic
>

>> today in my country.
>
> >> Any link and direction will be appreciated.
>
> >> Roni
>
> You might want to Google for "Savonius Turbine", as it sounds by the description of your
> project that it will become one such.
>
> There have been endless discussions here about various kinds of wind turbines. I think the
> consensus is that the "propellor-style" are vastly more efficient. Much harder to
> hand-build one as a "one-off" due to the complex shape of the blades. Savonius are much
> less efficient, but easy to build as a DIY project.
>
> I think you will find that a Savonius rotor that narrow (made of 4" pipe) wil spin very
> prettily in a strong wind, but develop almost no torque.
>
> Gordon Richmond