摘要：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.
