Journal
ENERGY AND BUILDINGS
Volume 158, Issue -, Pages 371-383Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.enbuild.2017.09.099
Keywords
Energy harvesting; Aerodynamics; Aeroelasticity; Piezoelectricity; Smart buildings; Building automation
Funding
- BIC Lazio Spa under a two-year ESA Space Technology transfer program
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This study focuses on the conceptual development, analytical modeling and experimental wind tunnel testing of a high efficiency energy harvesting (EH) device, based on piezoelectric materials, with an application for the sustainability of smart buildings. The device, harvests the airflow inside Heating, Ventilation and Air Conditioning (HVAC) systems, using a piezoelectric component and an appropriate customizable aerodynamic appendix (fin) that takes advantage of specific airflow phenomena (vortex shedding and galloping), and can be implemented for optimizing the energy consumption inside buildings. Different relevant aspects are explored in wind tunnel testing, after a thoughtful investigation using analytical methods. Two different configurations for the fin (circular and T-section) are compared. Aspects of the electrical modeling for the EH circuit are provided (including issues on the EH induced damping), and the effective energy harvesting potential of the working prototype device in close-to-real conditions is assessed. (C) 2017 Elsevier B.V. All rights reserved.
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