On thermodynamics in the primary power conversion of oscillating water column wave energy converters

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dc.contributor.author Sheng, Wanan
dc.contributor.author Alcorn, Raymond
dc.contributor.author Lewis, Anthony
dc.date.accessioned 2016-06-03T13:43:43Z
dc.date.available 2016-06-03T13:43:43Z
dc.date.issued 2013-03-06
dc.identifier.citation Sheng, W., Alcorn, R. and Lewis, A. (2013) 'On thermodynamics in the primary power conversion of oscillating water column wave energy converters' Journal of Renewable and Sustainable Energy, 5, 023105. http://dx.doi.org/10.1063/1.4794750 en
dc.identifier.volume 5 en
dc.identifier.issued 2 en
dc.identifier.startpage 023105 (1) en
dc.identifier.endpage 023105 (18) en
dc.identifier.issn 1941-7012
dc.identifier.uri http://hdl.handle.net/10468/2691
dc.identifier.doi 10.1063/1.4794750
dc.description.abstract The paper presents an investigation to the thermodynamics of the air flow in the air chamber for the oscillating water column wave energy converters, in which the oscillating water surface in the water column pressurizes or de-pressurises the air in the chamber. To study the thermodynamics and the compressibility of the air in the chamber, a method is developed in this research: the power take-off is replaced with an accepted semi-empirical relationship between the air flow rate and the oscillating water column chamber pressure, and the thermodynamic process is simplified as an isentropic process. This facilitates the use of a direct expression for the work done on the power take-off by the flowing air and the generation of a single differential equation that defines the thermodynamic process occurring inside the air chamber. Solving the differential equation, the chamber pressure can be obtained if the interior water surface motion is known or the chamber volume (thus the interior water surface motion) if the chamber pressure is known. As a result, the effects of the air compressibility can be studied. Examples given in the paper have shown the compressibility, and its effects on the power losses for large oscillating water column devices. en
dc.description.sponsorship Science Foundation Ireland (SFI Charles Parsons Award) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Institute of Physics en
dc.rights © 2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Sheng et al., Journal of Renewable and Sustainable Energy, 5, 023105 (2013) and may be found at http://dx.doi.org/10.1063/1.4794750 en
dc.subject Wave energy converter en
dc.subject Wave energy production en
dc.subject Oscillating water column en
dc.subject Isentropic process. en
dc.subject Air compressibility en
dc.subject Oscillating water column devices en
dc.title On thermodynamics in the primary power conversion of oscillating water column wave energy converters en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Wanan Sheng, School Of Engineering, University College Cork, Cork, Ireland. +353-21-490-3000 Email: w.sheng@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2015-01-20T15:19:31Z
dc.description.version Published Version en
dc.internal.rssid 256972854
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Renewable and Sustainable Energy en
dc.internal.copyrightchecked No. !!CORA!! Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress w.sheng@ucc.ie en
dc.identifier.articleid 023105

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