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VISTA International, Inc.
8310 South Valley Highway, Suite 300 - Englewood, CO 80112 USA
720.222.3032 info@vistainternational.net
Home > Divisions > Low Wind Speed Generator
LOW WIND SPEED GENERATORS
Today, after two decades of the 'large high wind speed' turbine effort capturing everyone's attention, the focus at the US Department of Energy, the National Renewable Energy Labs, and others who focus and steer the 'future of wind technology development' has shifted to 'low-wind-speed energy capture', while our focus and work has been there all along. We are already in position now to deliver the technology which enables the real value proposition for wind energy capture: wind energy present 70% of the time, on over 80% of the Earth's landmass!

Choosing the right turbines is the key to a wind power plant project that provides a strong return on investment. Vista International, Inc. has a broad range of turbine models, targeting specific conditions and priorities. Vista's wind turbine technologies can be tailored or 'scaled' to fit any number of niche markets, identified over the years of management' s experience, including the up to 500 Kw/Hrs per day net metering and/or mini-wind farm product series, previously proto-typed, productized, and field tested.

The first patents for our wind turbine technology were issued in 1984 in the USA to Ralph A. Belden with others that have been issued and applied for since 2000. Foreign Patents rights there under are issued in most manufacturing countries around the world. Improvement Patents are constantly in motion. Manufacturing is based on the ISO 9000 standards.

Our wind equipment has been installed in different countries such as Australia, Brunei, Egypt, India, Indonesia, Jordan, Malaysia, Myanmar, New Zealand, Saudi Arabia, South Africa, the South Pacific Islands, United Kingdom and the USA over the past years.

The technology operates in a Class 2 type wind or higher, and keep in mind that 80% of the earth¡¯s surface is a Class 2 wind. Most other providers of wind turbines have designed wind turbines for Class 4 or higher winds and are manufactured outside the USA, mostly in Europe. Our units for the most part will be manufactured in the USA and shipped out as an export all over the world. These units are easily installed and maintained just as easily as they were installed. In times when the winds exceed 132 MPH (successfully tested at even higher wind speeds) the units could be lowered and that is easily accomplished by just two individuals due to the installation design. All units come in 2 sizes of towers in 100' and 120' no matter if the blades are 12', 20' or 50'.
A large rotor area at low wind speed allows production of energy when conventional fixed axis wind turbines produce little or none.

A small rotor area at high wind speed allows safe operation and continued power production when conventional fixed axis wind turbines furl down. The Appropriate Energy wind turbine does not furl down.
Varying rotor area according to wind speed.

The ability to vary the rotor area allows the use of rotor blades up to five times the size of rotor blades of similar rated conventional turbines. These rotor blades capture more energy at low wind speeds.

At a wind speed of 4.5m/sec the Appropriate Energy wind turbine produces 200% more energy per unit of installed cost than the conventional fixed axis wind turbine.
This mpeg file is a short video clip on how our patented furling mechanism reduces the swept area during extreme wind conditions. The clip was taken on a day when the average wind speed was 7m/s gusting to 15 - 18m/s. This furling method allows us to have a large swept area which in turn allows our wind turbines to capture maximum wind energy at low wind speeds. This is a clip of our of our S20000 wind turbines generating power at Shek Kwu Chau in Hong Kong. The wind speeds are between 6-7 m/s during this clip.
SLG.mpg S20000.mpg


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