A Vertical axis wind turbine
(Page 2 of 2)
What about
performance? According to the National Aeronautical
Establishment's laboratory report on a wind tunnel
investigation, "[The vertical axis wind turbine's]
aerodynamic efficiency compares with the current horizontal
axis machines. The efficiency that really matters is the
cost per unit ,of power produced. This depends on the winds
at a given site and the capital cost of the windmill. The
vertical axis windmill, due to its simplicity, has the
potential for a much lower capital cost than the horizontal
axis machines."
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The turbine's apparent promise of
acceptable performance at low cost has caught the attention
of various Canadian government bureaus as a possible means
of inexpensive power generation in that country's vast
northern wilderness. Meanwhile, the Rangi-South design is
also being studied in the U.S. as part of a NASA project on
small-scale power plants for family dwellings.
If you have
your own ideas for putting the "eggbeater" to work, you
should be able to obtain a machine shortly thanks to the
Global Wind and Electric Collective, a Canadian group which
plans to manufacture and sell such devices through its Odin
Vertical Axis Wind Turbines division. The organization has
been testing a prototype windplant as the sole power source
for its Ontario farm, and hopes to have an informational
brochure ready this spring.
The Odin machine will be
available under either of two plans: [1] The makers will
supply the entire plant, complete with all electrical
components. (The exact price hasn't been set but should be
less than half that of a conventional unit.) [2]
Alternatively, you can order instructions and blueprints
and build your own turbine (with some components supplied
by the. firm if you desire). The tentative cost of the
plans is around $25.00.
For further details on design and
construction, send $1.00 to ODIN WINDMAKER Vertical Axis
Wind Turbines, 32 Roseberry Avenue, Ottawa, Ontario,
Canada. If possible, include an estimate of your energy
requirements and the direction and force of the prevailing
winds at the proposed site. Information on wind conditions
in your area is available from the nearest U.S. Weather
Bureau or, for an additional dollar, the Ottawa collective
will do the research for you.
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