German engineering professor Robert Gasch calls them fantasy wind turbines. These are the inventions--or contraptions--that bedevil serious wind turbine advocates. They are the "revolutionary" inventions that periodically rise up from the dead whenever the price of oil goes up or there's a "power crisis" somewhere in the world.
The following has been adapted from Wind Energy Basics by Chelsea Green Publishing Co., 2009.
Very few of these ideas are new, and certainly none of them are "revolutionary". While some of these inventions may spring from well-intentioned inventors, others are the brainchilds of fast-buck artists of--shall we say--questionable reputations.
It's often difficult for the uninitiated to tell the difference and therein lies the problem. How to separate the real from the imaginary, the fraudulent from the worthwhile.
Below are some tips for spotting these questionable products. The most important tip to keep in mind is that from Robert Gasch. If there is a new wind turbine, no one should pay the slightest attention to it until they "build it, measure it, and publish" the results. Until then, it's just hot air--and nothing more.
How can you identify a "questionable" wind turbine design?
What lessons have we learned from 30 years of modern wind turbine development?
There are
What we learned from the Vortec ducted turbine disaster for example.
In sum always be wary of “New” Designs. There's rarely anything truly "new" under the sun--or in the wind.