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Flow energy piezoelectric bimorph nozzle harvester

Show simple item record Sherrit, Stewart Lee, Hyeong Jae Walkemeyer, Phillip Hasenoehrl, Jennifer Hall, Jeffery L. Colonius, Tim Tosi, Luis Phillipe Arrazola, Alvaro Kim, Namhyo Sun, Kai Corbett, Gary 2016-04-13T17:31:40Z 2016-04-13T17:31:40Z 2014-03-09
dc.identifier.citation SPIE Smart Structures and Non-Destructive Evaluation, San Diego, California, March 9-13, 2014 en_US
dc.identifier.clearanceno 14-0941
dc.description.abstract There is a need for a long-life power generation scheme that could be used downhole in an oil well to produce 1 Watt average power. There are a variety of existing or proposed energy harvesting schemes that could be used in this environment but each of these has its own limitations. The vibrating piezoelectric structure is in principle capable of operating for very long lifetimes (decades) thereby possibly overcoming a principle limitation of existing technology based on rotating turbo-machinery. In order to determine the feasibility of using piezoelectrics to produce suitable flow energy harvesting, we surveyed experimentally a variety of nozzle configurations that could be used to excite a vibrating piezoelectric structure in such a way as to enable conversion of flow energy into useful amounts of electrical power. These included reed structures, spring mass-structures, drag and lift bluff bodies and a variety of nozzles with varying flow profiles. Although not an exhaustive survey we identified a spline nozzle/piezoelectric bimorph system that experimentally produced up to 3.4 mW per bimorph. This paper will discuss these results and present our initial analyses of the device using dimensional analysis and constitutive electromechanical modeling. The analysis suggests that an order-of-magnitude improvement in power generation from the current design is possible. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2014 en_US
dc.subject Actuators en_US
dc.subject Piezoelectric Devices en_US
dc.subject Flow Energy Harvesting en_US
dc.subject bimorphs en_US
dc.subject transducers en_US
dc.title Flow energy piezoelectric bimorph nozzle harvester en_US
dc.type Preprint en_US

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