Performance and power smoothing of innovative closed-circuit oscillating water column wave energy converter

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dc.contributor.advisor Murphy, Jimmy en
dc.contributor.advisor Sheng, Wanan en Benreguig, Pierre 2020-02-20T11:13:16Z 2020-02-20T11:13:16Z 2019 2019
dc.identifier.citation Benreguig, P. 2019. Performance and power smoothing of innovative closed-circuit oscillating water column wave energy converter. PhD Thesis, University College Cork. en
dc.identifier.endpage 291 en
dc.description.abstract Due to the urgency to limit global warming to 1.5◦C, it is necessity to find alternatives to fossil fuel energy to empower human activities. Among the alternative resources of energy, wave energy has a large potential as it could potentially represent 10% of the world electricity demand. Significant progress in this field is however still needed to produce affordable electrical energy. Oscillating-Water-Column (OWC) devices are among the most promising types of wave energy converters because of their relative simplicity. The present work investigates the possibility of improving the performance of this well-established concept by introducing a variation in the working principle. The resulting new Tupperwave concept is equipped with non-return valves and air pressure accumulators to create a smooth unidirectional air flow, harnessed efficiently by a unidirectional turbine. In this thesis, the Tupperwave concept is investigated physically and numerically on a floating structure. In order to assess the relevance of the Tupperwave device against the conventional OWC, wave-to-wire numerical models for both devices are developed, using different thermodynamic approaches and considering the use of the current state-of-the-art turbines for each device. The different power conversion processes of the wave-to-wire models are validated through physical experiments. The wave-to-wire models are then used to identify the benefits of pneumatic power smoothing by the Tupperwave device and assess its electrical power performance. The results demonstrate the potential of the new Tupperwave concept to outperform the conventional OWC concept in terms of electrical power production and quality. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher University College Cork en
dc.rights © 2019, Pierre Benreguig. en
dc.rights.uri en
dc.subject Wave energy en
dc.subject Non-return valves en
dc.subject Air turbine en
dc.subject Non-isentropic en
dc.subject Oscillating water column en
dc.subject Wave-to-wire model en
dc.title Performance and power smoothing of innovative closed-circuit oscillating water column wave energy converter en
dc.type Doctoral thesis en
dc.type.qualificationlevel Doctoral en
dc.type.qualificationname PhD en
dc.internal.availability Full text available en Not applicable en
dc.description.version Accepted Version
dc.contributor.funder OCEANERA-NET European Network en
dc.description.status Not peer reviewed en Energy Engineering en
dc.check.type No Embargo Required
dc.check.reason Not applicable en
dc.check.opt-out Not applicable en
dc.thesis.opt-out false
dc.check.embargoformat Embargo not applicable (If you have not submitted an e-thesis or do not want to request an embargo) en
dc.internal.conferring Summer 2020 en
dc.internal.ricu Centre for Marine Renewable Energy Ireland (MaREI) en
dc.relation.project OCEANERA-NET European Network (CN/00028) en

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© 2019, Pierre Benreguig. Except where otherwise noted, this item's license is described as © 2019, Pierre Benreguig.
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