Article
Version 1
Preserved in Portico This version is not peer-reviewed
A Simple Nozzle-Diffuser Duct Used as a Kuroshio Energy Harvester
Version 1
: Received: 19 July 2021 / Approved: 20 July 2021 / Online: 20 July 2021 (16:07:34 CEST)
A peer-reviewed article of this Preprint also exists.
Yeh, P.-H.; Tsai, S.-Y.; Chen, W.-R.; Wu, S.-N.; Hsieh, M.-C.; Chen, B.-F. A Simple Nozzle-Diffuser Duct Used as a Kuroshio Energy Harvester. Processes 2021, 9, 1552. Yeh, P.-H.; Tsai, S.-Y.; Chen, W.-R.; Wu, S.-N.; Hsieh, M.-C.; Chen, B.-F. A Simple Nozzle-Diffuser Duct Used as a Kuroshio Energy Harvester. Processes 2021, 9, 1552.
Abstract
In response to the increasing energy demand in Taiwan and the global trend of renewable energy development, Kuroshio energy is a potential energy source. How to extract this invaluable natural resource has then become an intriguing and important question in engineering practices. This study conducted a study for a nozzle-diffuser duct (NDD) as the Kuroshio currents energy harvester. The computational fluid dynamics (CFD) software ANSYS Fluent was employed to calculate the drag and added mass coefficients of the duct anchored to the seabed. Those coefficients were further imported into Orcaflex to simulate the motion of the duct under normal and storm wave conditions. Results showed that the duct was stable 25 m below the sea surface under normal wave condition. When the wave condition changed to storm waves, the duct needed to dive into at least 90 m below the sea surface to regain its stability and obtain high power take-off (PTO). An optimal design nozzle-diffuser-duct was reported and a PTO peak of 15 kW was expectable in the Kuroshio currents. Once a suitable offshore platform can be developed with sixty-six NDDs, a Megawatt Kuroshio ocean current power generation system is feasible in the near future.
Keywords
Kuroshio; Current energy harvester; Orcaflex; Nozzle-diffuser duct
Subject
Engineering, Automotive Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment