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AuthorHassan, H.
AuthorWahid, A.N.
AuthorMuthalif, A.G.A.
Available date2024-05-14T03:51:41Z
Publication Date2022
Publication NameIET Conference Proceedings
ResourceScopus
Identifierhttp://dx.doi.org/10.1049/icp.2022.2272
ISSN27324494
URIhttp://hdl.handle.net/10576/54930
AbstractWith the ever-growing energy demand and environmental concerns, research on alternative energy is vital for sustainability. Thermal energy harvesting using shape memory alloy (SMA) heat engine is one of the possible methods for power generation from low to high-grade thermal energy but suffers from low performance; one of the reasons is due to the varying angular velocity input. In this research, a tunable generator coupled with a pulley-type SMA heat engine is designed to produce output voltage at different resonances, matching with the varying frequency input from the heat engine. The generator consists of piezoelectric cantilever beams arranged around a pulley with moving supporting clamps to manipulate their natural frequencies. The generators are mechanically excited by repulsive forces of magnets attached at both rotating SMA heat engine and generator pulleys. Results show that the peak output voltage produced by the tuned piezoelectric generator is higher as compared to untuned where the percentage of improvement is 230.62%, 44.75%, 11.59%, 76% and 96.83%, at 40mm, 45mm, 50mm, 55mm and 60mm effective length, respectively. Results from this study can help to design an SMA heat engine coupled with piezoelectric generators where maximum voltage can be generated consistently for a more efficient thermal energy harvesting.
Languageen
PublisherInstitution of Engineering and Technology
SubjectElectric generators
Energy harvesting
Engines
Piezoelectric devices
Piezoelectricity
Pulleys
Sustainable development
Alternative energy
Energy demands
Energy Harvester
Environmental concerns
Low-to-high
Output voltages
Piezoelectric generators
Power- generations
Thermal energy harvesting
Tunables
Thermal energy
TitleTunable Piezoelectric Generator Coupled with Shape Memory Alloy (SMA) Heat Engine as Thermal Energy Harvester
TypeConference Paper
Pagination95-100
Issue Number10
Volume Number2022
dc.accessType Abstract Only


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