08 Apr 2013:
Project to Test Promise of
Small, Vertical-Axis Wind Turbines
A wind farm being planned in a remote Alaska village will seek to demonstrate that small, vertical-axis turbines can produce more energy than conventional wind turbines and with less
Vertical-axis wind turbines
environmental impact. While the turbines used in most standard wind farm projects can produce turbulence that decreases the output of the turbines downstream, John Dabiri, a California Institute of Technology professor, says that small, vertical-axis turbines can create a wake that actually boosts the output of adjacent turbines
if positioned strategically. In addition, the smaller turbines can be placed closer together without causing aerodynamic interference, are cheaper to produce, and are less likely to kill birds, Dabiri told MIT’s Technology Review
. Dabiri says he hopes his project in Alaska, which could eventually include 70 turbines in the village of Igiugig, can generate as much energy as the diesel generators currently used by the community. Critics, however, argue that the vertical-axis turbines aren’t as efficient as conventional turbines since the turning blades spend half the time moving against the wind, and that such constant wear-and-tear will degrade the blades.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Accepting entries through June 15, 2015.
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.
is now available for mobile devices at e360.yale.edu/mobile
The Warriors of Qiugang
, a Yale Environment 360
video, chronicles a Chinese village’s fight against a polluting chemical plant. It was nominated for a 2011 Academy Award for Best Documentary Short.
Watch the video.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.
, winner of the Yale Environment 360 Video Contest, documents the work of African researchers monitoring wildlife in Uganda's remote Bwindi Impenetrable National Park. Watch the video.