Structure-borne sound and vibration from building-mounted wind turbines
Moorhouse, AT, Elliott, AS, Eastwick, G, Evans, TA, Ryan, A, Von Hunerbein, S, le Bescond, V and Waddington, DC 2011, 'Structure-borne sound and vibration from building-mounted wind turbines' , Environmental Research Letters, 6 (3) , 035102.
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Noise continues to be a significant factor in the development of wind energy resources. In the case of building-mounted wind turbines (BMWTs), in addition to the usual airborne sound there is the potential for occupants to be affected by structure-borne sound and vibration transmitted through the building structure. Usual methods for prediction and evaluation of noise from large and small WTs are not applicable to noise of this type. This letter describes an investigation aiming to derive a methodology for prediction of structure-borne sound and vibration inside attached dwellings. Jointly funded by three UK government departments, the work was motivated by a desire to stimulate renewable energy generation by the removal of planning restrictions where possible. A method for characterizing BMWTs as sources of structure-borne sound was first developed during a field survey of two small wind turbines under variable wind conditions. The 'source strength' was established as a function of rotor speed although a general relationship to wind speed could not be established. The influence of turbulence was also investigated. The prediction methodology, which also accounts for the sound transmission properties of the mast and supporting building, was verified in a field survey of existing installations. Significant differences in behavior and subjective character were noted between the airborne and structure-borne noise from BMWTs.
|Schools:||Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Acoustics Research Centre|
|Journal or Publication Title:||Environmental Research Letters|
|Depositing User:||AT Moorhouse|
|Date Deposited:||18 Oct 2011 11:25|
|Last Modified:||18 Oct 2011 11:25|
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