Last week I was in Denmark, and while there I had an opportunity to pay a visit to some wind turbines operated by Aalborg University in Northern Denmark. Getting to finally see and hear a fully functional 2.3 MW wind turbine “in the flesh” was pretty cool, I have to say.
There was a reasonable wind blowing at the time of my visit and the turbines were moving at around 15-18 RPM. Standing directly under the blades I could certainly hear them moving, but it wasn’t as loud as I had expected, and after moving just 50-100 yards away the sound diminished significantly.
The University also has a mast close to these turbines in order to measure wind speeds at different heights above the ground, as part of their research into efficiency of production.
Here are some photos…