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Flow energy piezoelectric bimorph nozzle harvester

Sherrit, Stewart and Lee, Hyeong Jae and Walkemeyer, Phillip and Hasenoehrl, Jennifer and Hall, Jeffrey L. and Colonius, Tim and Tosi, Luis Phillipe and Arrazola, Alvaro and Kim, Namhyo and Sun, Kai and Corbett, Gary (2014) Flow energy piezoelectric bimorph nozzle harvester. In: Active and Passive Smart Structures and Integrated Systems 2014. Proceedings of SPIE. No.9057. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 90570D. ISBN 9780819499837.

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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.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Sherrit, Stewart000-0003-0656-4889
Colonius, Tim0000-0003-0326-3909
Tosi, Luis Phillipe0000-0002-0819-4765
Additional Information:© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE). The research at the Jet Propulsion Laboratory (JPL), a division of the California Institute of Technology, was carried out under a contract with the National Aeronautics Space Agency (NASA). Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not constitute or imply its endorsement by the United States Government or the Jet Propulsion Laboratory, California Institute of Technology.
Funding AgencyGrant Number
Subject Keywords:Actuators, Piezoelectric Devices, Flow Energy Harvesting, bimorphs, transducers
Series Name:Proceedings of SPIE
Issue or Number:9057
Record Number:CaltechAUTHORS:20180713-132555490
Persistent URL:
Official Citation:Stewart Sherrit, Hyeong Jae Lee, Phillip Walkemeyer, Jennifer Hasenoehrl, Jeffrey L. Hall, Tim Colonius, Luis Phillipe Tosi, Alvaro Arrazola, Namhyo Kim, Kai Sun, Gary Corbett, "Flow energy piezoelectric bimorph nozzle harvester", Proc. SPIE 9057, Active and Passive Smart Structures and Integrated Systems 2014, 90570D (1 April 2014); doi: 10.1117/12.2045191;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87837
Deposited By: George Porter
Deposited On:16 Jul 2018 16:25
Last Modified:16 Nov 2021 00:21

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