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The reliability of modern wind turbines and their components can be enhanced by using lubricants especially designed to meet their requirements. New speciality lubricants for gear rim/pinion drives on pitch and yaw bearings can offer good pumpability and metering in central lubrication systems down to minus 30°C, thus contributing to the increased reliability of the turbines.
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The Spinner Anemometer consists of three single-path ultrasonic anemometers mounted on the spinner – taking measurements while the turbine operates (see Figure 1). Accelerometers are included so that the correct azimuth angle of the sensor in question can be determined. The device was invented and patented by Troels Friis Pedersen of Risø/Danish Technical University. The sensors and some initial testing were described in detail in Risø Report R-1654(EN), ‘Optimisation of Wind Turbine Operation by Use of Spinner Anemometer’ by Pedersen, Sørensen, Vita and Enevoldsen.
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