Noise and vibration from building-mounted micro wind turbinespart 3 : prediction methodology

This brief report describes a simplified method for estimation oflevels of structure-borne sound in buildings to which a micro-windturbine (MWT) is attached. The method is applicable to two specificdesigns of MWT, each for three lengths of mounting pole and formasonry buildings. The output gives expected noise level forgiven rotational speed of the MWT. Applicability and limitationsof the method are described. A more general methodology is provided in companion reports but requires specialist knowledge to implement. Structure-borne sound is notoriously difficult to predictand several assumptions have been necessary in order toproduce a sufficiently simple estimation method. Therefore, caution is required in relying on the predictions until sufficient confidence has been builtup through experience of real installations