Sherrit, Stewart and Lee, Hyeong Jae and Colonius, Tim and Tosi, Luis Phillipe (2019) Flow energy harvesting devices and system. Patent number: US20190097548A1. https://resolver.caltech.edu/CaltechAUTHORS:20211008-223014029
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Abstract
A flow energy harvesting system including a nozzle-diffuser defining a spline-shaped flow channel and a flow energy harvesting device in the spline-shaped flow channel of the nozzle-diffuser. The spline-shaped flow channel includes a converging portion, a diverging portion, and a constriction section between the converging and diverging portions. The flow energy harvesting device includes a flextensional member having a frame and a cantilever extending outward from the frame, and a stack of piezoelectric elements housed in an interior cavity defined in the frame. The cantilever is a non-piezoelectric material. The frame of the flextensional member is in the converging portion and the cantilever is in the constriction section of the spline-shaped flow channel. The frame is configured to deform and elongate the piezoelectric elements to generate a current based on the piezoelectric effect when a fluid flows through the spline-shaped flow channel and generates unbalanced forces on the cantilever due.
| Item Type: | Patent | |||||||||
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| Related Patents: | WO2017196454A2, GB2565452B | |||||||||
| Patent Classification: | U.S. Class: H02N2/186; E21B 41/0085. Current International Class: HO2N 2/18; E21B 41/00. | |||||||||
| Patent Assignee: | California Institute of Technology | |||||||||
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| Additional Information: | Application filed: 2016-03-25. Application published: 2019-03-28. Patent status: pending. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH/DEVELOPMENT: The invention described herein was made in the performance of work under a NASA contract NNN12AA01C, and is subject to the provisions of Public Law 96 - 517 ( 35 USC 202 ) in which the Contractor has elected to retain title. | |||||||||
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| Record Number: | CaltechAUTHORS:20211008-223014029 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20211008-223014029 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 111308 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Katherine Johnson | |||||||||
| Deposited On: | 08 Oct 2021 22:55 | |||||||||
| Last Modified: | 11 Nov 2022 19:07 |
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