photo from: http://www.energypicturesonline.com/image.php?src=1655
ALTERNATIVE
ENERGY SOURCES FOR THE
WORLD--Innovative Wind Turbines
Joan
http://www.homesopen.com/wind/savonius.pdf
This is very detailed plans to build a Savonius system with discussion
of the function and fine-tuning of many of the components.
http://www.windstuffnow.com/main/vawt.htm
About a year ago I was
emailed a patent of a VAWT that was a bit different. This one
used the "Venturi effect" to duct air around the wings.
This site shows how to build it.
Savonius design is quiet, efficient in low wind conditions,
inexpensive, and easier to operate.
http://ezinearticles.com/?Savonius-Vertical-Axis-Windmills-Reliable-Yet-Simple-Home-Electricity-Generators&id=2164747
HERE IS A DESIGN THAT LOOKS LIKE a take-off on Savonius:
http://www.treehugger.com/files/2007/11/windterras_resi_1.php#ch01
`
Solar
roofs cost about 20,000 for a typical two-bedroom California home.
Windterra turbines cost $5,900, with the cost of installation about
$1,000...
"Yes,
it needs to have an architect check for the structural integrity of the
roof. The unit is 250 pounds or so," said Yanni Kalajakis, a marketer
in Windterra's San Ramon office.
(Observation from Joan: I should think that on a windy
hillside such a unit could be mounted on the ground.)
Joan
http://www.digitaljournal.com/article/259352
ROOF TOP WINDMILLS offer a unique design in Europe:
A
British company has created tiny turbines that generate enough
electricity to power two homes or a small office of 20 persons. The
tiny turbines can be easily installed on roofs, and are ready for
distribution through German energy giant, RWE.
Compared
to their giant cousins installed outdoors, these tiny turbines are
virtually silent; they don’t require any high winds to get them
started; they do not need long blades to catch the wind; and they work
no matter what direction the wind is blowing.
He
said the product is innovative, but the costs are still high for now.
Vahrenholt said mass production and improved materials should bring the
current cost of €30,000 ($43,275) per turbine, down quite a bit.
The turbines also need a professional installer, making them expensive.
Joan
http://www.turby.nl/99-downloads/Turby-EN-Application-V3.0.pdf
THIS ARTICLE OFFERS variants on the Savonius design with a lot of
detailed information and gorgeous pictures.:
Turby is a revolutionary vertical axis wind turbine especially
designed for use in an urban or built-up environment. This document is
written as a guide for anyone interested in its development and
application.
Joan
http://www.Wind2Electricity.net
DETAILED REVIEWS of topDIY Horizontal Style Windmill and Solar Panel
Plans to learn which are gems and which to avoid before you build:
Joan
http://archive.capecodonline.com/special/windfarm/urbturb27.htm
Dutch
move the modernized windmill into town
Joan
http://www.msnbc.msn.com/id/26645057/
ANOTHER INNOVATIVE WIND TURBINE:
Energy
Ball generates power for homes
Eggbeater-like
design spins quieter than traditional turbines
From
Holland, the country famous for its windmills, comes a new design for
home wind power. Looking like an eggbeater, it spins quieter and at
lower wind speeds than a lot of traditional propeller-type turbines.
Joan