Decades ago, engineers largely dismissed vertical-axis wind turbines—which spin around a central axis like a top—because they could not match the efficiency of the propeller-like turbines common today.
But researchers have found recently that clusters of vertical-axis turbines, arranged to take advantage of each other’s turbulence, can outperform conventional wind farms. When added to conventional farms, according to a study published this month, they can even increase the older turbines’ output.
Reposted from Forbes | full article »
