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Design And Study Of Spinning Sea Wave Point Absorber

Renewable energy sources are becoming more important when the world tries to ensure sustainability in energy generation for the future. With a potential to harness over 20,000TWh of electrical energy from the ocean, various types of energy converters were being developed. One of such energy converte...

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Main Author: Joshua Wong, Jia Yi
Format: Monograph
Language:English
Published: Universiti Sains Malaysia 2018
Subjects:
T Technology
TJ Mechanical engineering and machinery
Online Access:http://eprints.usm.my/54172/1/Design%20And%20Study%20Of%20Spinning%20Sea%20Wave%20Point%20Absorber_Joshua%20Wong%20Jia%20Yi_M4_2018.pdf
http://eprints.usm.my/54172/
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spelling my.usm.eprints.54172 http://eprints.usm.my/54172/ Design And Study Of Spinning Sea Wave Point Absorber Joshua Wong, Jia Yi T Technology TJ Mechanical engineering and machinery Renewable energy sources are becoming more important when the world tries to ensure sustainability in energy generation for the future. With a potential to harness over 20,000TWh of electrical energy from the ocean, various types of energy converters were being developed. One of such energy converter is the point absorber which converts the potential and kinetic energy in the ocean wave motion into electricity. Though point absorber technology has been developed over the years, no research were conducted to study the effectiveness of utilizing a spinning motion for electricity generation in the point absorber instead of the conventional translational mechanism. The study of Spinning Sea Wave Point Absorber focuses on the understanding, design, fabrication and testing of a spiral gear mechanism implemented in a point absorber, conducted in a controlled wave tank. It aims to compare the Capture Width Ratio with conventional point absorbers as well as to identify the most effective lead angle within the spiral gear mechanism. A wave tank is constructed and the wave generated is characterized. With the wave characteristics, a point absorber is designed and fabricated. Through the experiments, the CWR recorded is compared to external reference and theoretical results. The CWR recorded using different lead angle for the spiral gear were compared to identify the most effective lead angle. The results showed that the tested spinning sea wave point absorber achieved a relatively low CWR compared with conventional results, with a maximum of 0.11% where conventionally it ranges from 7% to 31%. Such result can be attributed to the ineffective DC generator selected, presence of significant frictional force in the spiral gear mechanism, unconstricted motion of the buoy, softness of material used to fabricate the point absorber and lack of robustness in the design. The most effective lead angle identified is 55°, which falls in the middle of all the lead angles tested. It was able to generate a significant amount of electricity with a relatively low fluctuation in performance. Universiti Sains Malaysia 2018-05-16 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/54172/1/Design%20And%20Study%20Of%20Spinning%20Sea%20Wave%20Point%20Absorber_Joshua%20Wong%20Jia%20Yi_M4_2018.pdf Joshua Wong, Jia Yi (2018) Design And Study Of Spinning Sea Wave Point Absorber. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Mekanikal. (Submitted)
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic T Technology
TJ Mechanical engineering and machinery
spellingShingle T Technology
TJ Mechanical engineering and machinery
Joshua Wong, Jia Yi
Design And Study Of Spinning Sea Wave Point Absorber
description Renewable energy sources are becoming more important when the world tries to ensure sustainability in energy generation for the future. With a potential to harness over 20,000TWh of electrical energy from the ocean, various types of energy converters were being developed. One of such energy converter is the point absorber which converts the potential and kinetic energy in the ocean wave motion into electricity. Though point absorber technology has been developed over the years, no research were conducted to study the effectiveness of utilizing a spinning motion for electricity generation in the point absorber instead of the conventional translational mechanism. The study of Spinning Sea Wave Point Absorber focuses on the understanding, design, fabrication and testing of a spiral gear mechanism implemented in a point absorber, conducted in a controlled wave tank. It aims to compare the Capture Width Ratio with conventional point absorbers as well as to identify the most effective lead angle within the spiral gear mechanism. A wave tank is constructed and the wave generated is characterized. With the wave characteristics, a point absorber is designed and fabricated. Through the experiments, the CWR recorded is compared to external reference and theoretical results. The CWR recorded using different lead angle for the spiral gear were compared to identify the most effective lead angle. The results showed that the tested spinning sea wave point absorber achieved a relatively low CWR compared with conventional results, with a maximum of 0.11% where conventionally it ranges from 7% to 31%. Such result can be attributed to the ineffective DC generator selected, presence of significant frictional force in the spiral gear mechanism, unconstricted motion of the buoy, softness of material used to fabricate the point absorber and lack of robustness in the design. The most effective lead angle identified is 55°, which falls in the middle of all the lead angles tested. It was able to generate a significant amount of electricity with a relatively low fluctuation in performance.
format Monograph
author Joshua Wong, Jia Yi
author_facet Joshua Wong, Jia Yi
author_sort Joshua Wong, Jia Yi
title Design And Study Of Spinning Sea Wave Point Absorber
title_short Design And Study Of Spinning Sea Wave Point Absorber
title_full Design And Study Of Spinning Sea Wave Point Absorber
title_fullStr Design And Study Of Spinning Sea Wave Point Absorber
title_full_unstemmed Design And Study Of Spinning Sea Wave Point Absorber
title_sort design and study of spinning sea wave point absorber
publisher Universiti Sains Malaysia
publishDate 2018
url http://eprints.usm.my/54172/1/Design%20And%20Study%20Of%20Spinning%20Sea%20Wave%20Point%20Absorber_Joshua%20Wong%20Jia%20Yi_M4_2018.pdf
http://eprints.usm.my/54172/
_version_ 1743107794630868992
score 13.211869

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