<div>This study focuses on the design and wind tunnel testing of a high efficiency Energy Harvesting device, based on</div><div>piezoelectric materials, with possible applications for the sustainability of smart buildings, structures and</div><div>infrastructures. The development of the device was supported by ESA (the European Space Agency) under a</div><div>program for the space technology transfer in the period 2014-2016. The EH device harvests the airflow inside</div><div>Heating, Ventilation and Air Conditioning (HVAC) systems, using a piezoelectric component and an appropriate</div><div>customizable aerodynamic appendix or fin that takes advantage of specific air flow phenomena (vortex shedding</div><div>and galloping), and can be implemented for optimising the energy consumption inside buildings. In the study,</div><div>focus is given on different relevant aspects of wind tunnel testing. Different configurations for the piezoelectric</div><div>bender (rectangular, cylindrical and T-shaped) are tested and compared, and the effective energy harvesting</div><div>potential of the working prototype device is assessed. Discussions regarding the EH-induced damping are</div><div>provided, together with a qualification of the influence of the device to the HVAC flows.</div>

Piezoelectric EH from flow-induced vibrations

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