Abstract
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.
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