alt.energy.homepower

>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