Duct Attachment on Improving Breaking Wave Zone Energy Extractor Device Performance
A challenging wave energy converter design that utilized the denser energy part of the nearshore breaking wave zone to generate electricity was introduced in 2016 by Shintake. The Okinawa Institute of Science and Technology Graduate University’s project aims to take advantage of breaking wave energy...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/19/6428 |
| _version_ | 1797516606735122432 |
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| author | Krisna Adi Pawitan Hideki Takebe Hanley Andrean Shuji Misumi Jun Fujita Tsumoru Shintake |
| author_facet | Krisna Adi Pawitan Hideki Takebe Hanley Andrean Shuji Misumi Jun Fujita Tsumoru Shintake |
| author_sort | Krisna Adi Pawitan |
| collection | DOAJ |
| description | A challenging wave energy converter design that utilized the denser energy part of the nearshore breaking wave zone to generate electricity was introduced in 2016 by Shintake. The Okinawa Institute of Science and Technology Graduate University’s project aims to take advantage of breaking wave energy to harness electricity. The 2016 version of the device consisted only of a bare turbine and power generator. Early exploration of the design recorded short periods and high impact wave pressures were experienced by the structure, with the turbine unable to harvest energy effectively. Additional structure to not only reduce incoming impact pressure but also increase the duration of water flow through the turbine was needed. These are the main reasons behind incorporating the duct attachment into the design. This paper show that the duct is capable of halving the impact pressure experienced by the turbine and can increase the energy exposure by up to 1.6 times the bare turbine configuration. Furthermore, it is also said that wave angle (β) = 40° is the critical angle, although the duct still increases wave energy exposure to the power take-off up to β = 60°. |
| first_indexed | 2024-03-10T07:03:14Z |
| format | Article |
| id | doaj.art-d6d27ca12f374ada82fdd441c13a254e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T07:03:14Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-d6d27ca12f374ada82fdd441c13a254e2023-11-22T16:04:14ZengMDPI AGEnergies1996-10732021-10-011419642810.3390/en14196428Duct Attachment on Improving Breaking Wave Zone Energy Extractor Device PerformanceKrisna Adi Pawitan0Hideki Takebe1Hanley Andrean2Shuji Misumi3Jun Fujita4Tsumoru Shintake5Quantum Wave Microscopy Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, JapanQuantum Wave Microscopy Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, JapanQuantum Wave Microscopy Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, JapanQuantum Wave Microscopy Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, JapanQuantum Wave Microscopy Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, JapanQuantum Wave Microscopy Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, JapanA challenging wave energy converter design that utilized the denser energy part of the nearshore breaking wave zone to generate electricity was introduced in 2016 by Shintake. The Okinawa Institute of Science and Technology Graduate University’s project aims to take advantage of breaking wave energy to harness electricity. The 2016 version of the device consisted only of a bare turbine and power generator. Early exploration of the design recorded short periods and high impact wave pressures were experienced by the structure, with the turbine unable to harvest energy effectively. Additional structure to not only reduce incoming impact pressure but also increase the duration of water flow through the turbine was needed. These are the main reasons behind incorporating the duct attachment into the design. This paper show that the duct is capable of halving the impact pressure experienced by the turbine and can increase the energy exposure by up to 1.6 times the bare turbine configuration. Furthermore, it is also said that wave angle (β) = 40° is the critical angle, although the duct still increases wave energy exposure to the power take-off up to β = 60°.https://www.mdpi.com/1996-1073/14/19/6428wave energy convertercoastal engineeringrenewable energystructural response |
| spellingShingle | Krisna Adi Pawitan Hideki Takebe Hanley Andrean Shuji Misumi Jun Fujita Tsumoru Shintake Duct Attachment on Improving Breaking Wave Zone Energy Extractor Device Performance Energies wave energy converter coastal engineering renewable energy structural response |
| title | Duct Attachment on Improving Breaking Wave Zone Energy Extractor Device Performance |
| title_full | Duct Attachment on Improving Breaking Wave Zone Energy Extractor Device Performance |
| title_fullStr | Duct Attachment on Improving Breaking Wave Zone Energy Extractor Device Performance |
| title_full_unstemmed | Duct Attachment on Improving Breaking Wave Zone Energy Extractor Device Performance |
| title_short | Duct Attachment on Improving Breaking Wave Zone Energy Extractor Device Performance |
| title_sort | duct attachment on improving breaking wave zone energy extractor device performance |
| topic | wave energy converter coastal engineering renewable energy structural response |
| url | https://www.mdpi.com/1996-1073/14/19/6428 |
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