Parametric Study for an Oscillating Water Column Wave Energy Conversion System Installed on a Breakwater
This study focuses on the analysis of the parameters of an oscillating water column (OWC) wave energy conversion system and wave conditions. Interactions between the dimensions of the OWC chambers and wave conditions are all taken into account to design an alternative OWC converter, called caisson-b...
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| Format: | Article |
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MDPI AG
2020-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/8/1926 |
| _version_ | 1797570676184317952 |
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| author | Hsien Hua Lee Cheng-Han Chen |
| author_facet | Hsien Hua Lee Cheng-Han Chen |
| author_sort | Hsien Hua Lee |
| collection | DOAJ |
| description | This study focuses on the analysis of the parameters of an oscillating water column (OWC) wave energy conversion system and wave conditions. Interactions between the dimensions of the OWC chambers and wave conditions are all taken into account to design an alternative OWC converter, called caisson-based OWC type wave energy converting system. A numerical method using an unsteady Navier-Stokes equations theorem in conservation form is used to analyze the proposed analytical model. The objective of this study is to try to apply an OWC wave energy converter to a caisson breakwater, which has been constructed in a harbor. The structure proposed in this study is a series of sets of independent systems, in which each set of converters is composed of three chambers to capture the wave energy, while better ensuring the safety of the caisson breakwater. Responses to be analyzed related to the conversion efficiency of the caisson-based OWC wave energy converting system include the airflow velocity from the air-chamber, the pneumatic power and the conversion efficiency in terms of a ratio between the pneumatic power and the energy of the incident waves. Parameters examined in this study include the dimensions of the OWC chamber features such as the orifice of the air-chamber allowing airflow in/output, the chamber length along the direction of incident waves, the size of the opening gate for incident waves and the submersion depth of the air-chamber. As found from the results, a best conversion efficiency from incident waves of 32% can be obtained for the extreme case where the orifice is very small, but for most other cases in the study, the best efficiency is about 15%. |
| first_indexed | 2024-03-10T20:28:23Z |
| format | Article |
| id | doaj.art-a6a6845d3c71434abd703bebf4b8a56d |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T20:28:23Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-a6a6845d3c71434abd703bebf4b8a56d2023-11-19T21:36:10ZengMDPI AGEnergies1996-10732020-04-01138192610.3390/en13081926Parametric Study for an Oscillating Water Column Wave Energy Conversion System Installed on a BreakwaterHsien Hua Lee0Cheng-Han Chen1Department of Marine Environment and Engineering, National Sun Yat-Sen University, Kaohsiung 804, TaiwanDepartment of Marine Environment and Engineering, National Sun Yat-Sen University, Kaohsiung 804, TaiwanThis study focuses on the analysis of the parameters of an oscillating water column (OWC) wave energy conversion system and wave conditions. Interactions between the dimensions of the OWC chambers and wave conditions are all taken into account to design an alternative OWC converter, called caisson-based OWC type wave energy converting system. A numerical method using an unsteady Navier-Stokes equations theorem in conservation form is used to analyze the proposed analytical model. The objective of this study is to try to apply an OWC wave energy converter to a caisson breakwater, which has been constructed in a harbor. The structure proposed in this study is a series of sets of independent systems, in which each set of converters is composed of three chambers to capture the wave energy, while better ensuring the safety of the caisson breakwater. Responses to be analyzed related to the conversion efficiency of the caisson-based OWC wave energy converting system include the airflow velocity from the air-chamber, the pneumatic power and the conversion efficiency in terms of a ratio between the pneumatic power and the energy of the incident waves. Parameters examined in this study include the dimensions of the OWC chamber features such as the orifice of the air-chamber allowing airflow in/output, the chamber length along the direction of incident waves, the size of the opening gate for incident waves and the submersion depth of the air-chamber. As found from the results, a best conversion efficiency from incident waves of 32% can be obtained for the extreme case where the orifice is very small, but for most other cases in the study, the best efficiency is about 15%.https://www.mdpi.com/1996-1073/13/8/1926OWCwave energywave power converting systemparametric studycaisson breakwater application |
| spellingShingle | Hsien Hua Lee Cheng-Han Chen Parametric Study for an Oscillating Water Column Wave Energy Conversion System Installed on a Breakwater Energies OWC wave energy wave power converting system parametric study caisson breakwater application |
| title | Parametric Study for an Oscillating Water Column Wave Energy Conversion System Installed on a Breakwater |
| title_full | Parametric Study for an Oscillating Water Column Wave Energy Conversion System Installed on a Breakwater |
| title_fullStr | Parametric Study for an Oscillating Water Column Wave Energy Conversion System Installed on a Breakwater |
| title_full_unstemmed | Parametric Study for an Oscillating Water Column Wave Energy Conversion System Installed on a Breakwater |
| title_short | Parametric Study for an Oscillating Water Column Wave Energy Conversion System Installed on a Breakwater |
| title_sort | parametric study for an oscillating water column wave energy conversion system installed on a breakwater |
| topic | OWC wave energy wave power converting system parametric study caisson breakwater application |
| url | https://www.mdpi.com/1996-1073/13/8/1926 |
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