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Energies 2012, 5(5), 1664-1685; doi:10.3390/en5051664

Cup Anemometers’ Loss of Performance Due to Ageing Processes, and Its Effect on Annual Energy Production (AEP) Estimates

1
IDR/UPM, ETSIA, Universidad Politécnica de Madrid (Polytechnic University of Madrid), Pza. del Cardenal Cisneros 3, Madrid 28040, Spain
2
Aerospace Propulsion and Fluid Mechanics Department, ETSIA, Universidad Politécnica de Madrid (Polytechnic University of Madrid), Pza. del Cardenal Cisneros 3, Madrid 28040, Spain
3
Department of Aerospace Materials and Production, ETSIA, Universidad Politécnica de Madrid (Polytechnic University of Madrid), Pza. del Cardenal Cisneros 3, Madrid 28040, Spain
*
Author to whom correspondence should be addressed.
Received: 22 March 2012 / Revised: 30 April 2012 / Accepted: 16 May 2012 / Published: 23 May 2012
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Abstract

The deviation of calibration coefficients from five cup anemometer models over time was analyzed. The analysis was based on a series of laboratory calibrations between January 2001 and August 2010. The analysis was performed on two different groups of anemometers: (1) anemometers not used for any industrial purpose (that is, just stored); and (2) anemometers used in different industrial applications (mainly in the field—or outside—applications like wind farms). Results indicate a loss of performance of the studied anemometers over time. In the case of the unused anemometers the degradation shows a clear pattern. In the case of the anemometers used in the field, the data analyzed also suggest a loss of performance, yet the degradation does not show a clear trend. A recalibration schedule is proposed based on the observed performances variations.
Keywords: anemometer calibration; cup anemometer; MEASNET; Annual Energy Production (AEP); recalibration schedule; anemometer wear and tear; anemometer loss of performance anemometer calibration; cup anemometer; MEASNET; Annual Energy Production (AEP); recalibration schedule; anemometer wear and tear; anemometer loss of performance
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Pindado, S.; Barrero-Gil, A.; Sanz, A. Cup Anemometers’ Loss of Performance Due to Ageing Processes, and Its Effect on Annual Energy Production (AEP) Estimates. Energies 2012, 5, 1664-1685.

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