Open AccessHybridized thermal energy harvesting mechanism
Author(s) -
Miwon Kang,
Eric M. Yeatman
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1407/1/012038
Subject(s) - thermal , voltage , work (physics) , coupling (piping) , beam (structure) , power (physics) , mechanics , energy harvesting , energy (signal processing) , materials science , physics , optics , thermodynamics , composite material , quantum mechanics
This work demonstrates a moving beam thermal energy harvesting mechanism for use adjacent to a heat source with modest temperature variation at low frequency (below 0.1 Hz). We investigate the coupling between the piezo- and pyro-electric effects to improve output power. The phase relationship between two effects was studied under different beam end conditions, i.e. fixed-free and fixed-fixed. A model to estimate the output is given and experimentally validated. Experimental result at 0.05 Hz shows that the output voltage in the fixed-fixed configuration is about 53% higher than the fixed-free configuration.