Research shows offshore wind more turbulent in Northeastern US


Research shows offshore wind more turbulent in Northeastern US

offshore wind study

 
A study conducted by researchers at the University of Delaware (UD) have shown the offshore wind in the Northeast of US is ‘predominantly unstable’.
 
The study titled “On the Predominance of Unstable Atmospheric Conditions in the Marine Boundary Layer Offshore of the U.S. Northeastern Coast” analyzed historical data captured by anemometers which were set up to ‘characterize the wind resource for the proposed Cape Wind Energy Project’ between 2003-2011.
 
The reason why this study is so unique in its findings, is that most European studies of offshore wind, like those in the Baltic Sea and North Sea show more neutral atmospheric conditions with only 20% considered unstable.
 
Cristina Archer, Associate Professor at UD and lead researcher on the study, said: “By contrast, our study found that wind conditions at Cape Wind are unstable between 40 and 80 percent of the time, depending on season and time of day.”
 
“The advantage of these turbulent conditions is that, at the level of the turbines, these bumps bring high wind down from the upper atmosphere where it is typically windier. This means extra wind power, but that extra power comes at a cost: the cost of more stress on the turbine’s blades.”
 
“If you have increased turbulence, you’re going to design a different farm, especially with regard to turbine selection and spacing. And guess what? Even the wind turbine manufacturing standards are based on the assumption of neutral stability.”
 
The next step is to study offshore wind in other locations around the US to see whether or not these wind conditions exist anywhere else outside Cape Cod or is unique to that specific area.
 

Posted By Sally on August 18, 2016 | 0 Comment

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