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|Po-Ching Hsu, Hsiao-Kang Ma, Yuan-Lung Hsu and Yu-Xuan You|
|National Taiwan University, Taiwan|
|ScientificTracks Abstracts: J Fundam Renewable Energy Appl|
|In this study, a magnetically driven piezoelectric proton exchange membrane fuel cell stack with built-in manifold is developed. To optimize the piezoelectric actuator (PZT actuator), several PDMS diaphragms with different Youngâs moduli are fabricated and integrated with the PZT operating under voltage and frequency ranges of 10â50 V and 15â300 Hz, respectively. The effect of the sizes of magnets used (with the PZT actuator) on the performance of the PZTmag and the PDMSmag is investigated. On the other hand, to simplify the hydrogen pipeline and reduce the total volume and weight of the fuel cell stack, manifolds are developed to uniformly provide hydrogen to each cell using only one pipeline. As a result, the PZT actuator (with a curing time of 30 min for the PDMS) produces the largest amplitude of 1602 Î¼m under the resonance frequency of 135 Hz and voltage of 40 V. The power consumption is 0.073 W. This optimized PZT actuator is used in the air breathing pumps of the magnetically driven PEMFC stack. When both the PZTmag and the PDMSmag use magnets 6 mm in diameter, a maximum amplitude of 87 Î¼m is produced under operating conditions of 70 Hz and 40 V, which can provide sufficient air to the stack. The power consumption is 0.03 W.|
Po-Ching Hsu is a MS student from Department of Mechanical Engineering at National Taiwan University. He has specialization in Thermodynamics and Fluid Dynamics. He is pursuing his research on piezoelectric proton exchange membrane fuel cell stack.
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