Journal
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
Volume 25, Issue 14, Pages 1838-1849Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1045389X14533432
Keywords
Energy harvesting; pyroelectric; lead zirconium titanate; radiation heat; design of experiments; response surface methodology
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Fluctuating heat radiating from the environment is an unused and unknown source. This study investigates pyroelectric energy harvesting as a way to tap a fluctuating radiation heat source. Appropriate circuitry coupling and the frequency of the radiation source play a key role in the ability to harvest this energy. Hence, a design of experiment approach that limits factors to temperature change frequency, electrical resistance, and capacitance is utilized to develop a full-factorial model at three levels for each factor. In order to quantify and maximize the harvested energy, a response surface model was developed. The optimum values for temperature change frequency, resistance, and capacitance were predicted to be 0.05 Hz, 7330 k Omega, and 100 mu F, respectively, for a PZT-5A sample with a volume of 0.684 cm(3). The maximum response of 62.89 mu J was predicted for the optimum values.
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