Floating solar power loss due to motions induced by ocean waves: an experimental study

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dc.contributor.authorHuang, Luofeng
dc.contributor.authorYang, Yifeng
dc.contributor.authorKhojasteh, Danial
dc.contributor.authorOu, Binjian
dc.contributor.authorLuo, Zhenhua
dc.date.accessioned2024-08-29T14:27:59Z
dc.date.available2024-08-29T14:27:59Z
dc.date.freetoread2024-08-29
dc.date.issued2024-11-15
dc.date.pubOnline2024-08-27
dc.description.abstractWhilst there is an interest in floating solar energy systems in coastal and offshore regions to utilise available sea space, they are subject to ocean waves that introduce constant momentum. Consequently, solar panels undergo periodic motions with the waves, causing a continuous change in tilt angle. The tilt angle variation is a sub-optimal process and leads to a loss of energy harnessing efficiency. To investigate this phenomenon, the present study innovatively installed a solar simulator on top of a wave tank. The solar simulator was used to generate high-strength light beams, under which, a floating solar unit was subject to periodic incident waves. Wave-induced motions to the solar system as well as the output power were measured. A systematic analysis of the results indicated that a floating solar unit can have significantly lower power output in waves, compared to its calm-water counterpart. An evident link was established between the wave-induced power loss and the wave-induced rotational movement of the panel. An empirical equation was derived which shows the power loss is predictable through the rotational amplitude. The results also highlight the importance of implementing wave attenuation technologies such as breakwaters to minimise wave-induced motions to floating solar systems. Overall, this research presents a novel experimental approach to assess the difference of floating solar power in ocean-wave versus calm-water scenarios, providing valuable insights for future solar projects on the ocean.
dc.description.journalNameOcean Engineering
dc.description.sponsorshipInnovate UK
dc.description.sponsorshipL.H. acknowledges grants received from Innovate UK, United Kingdom (No. 10048187, 10079774, 10081314), the Royal Society, United Kingdom (IEC NSFC 223253, RG R2 232462) and UK Department for Transport (TRIG2023 - No. 30066).
dc.identifier.citationHuang L, Yang Y, Khojasteh D, et al., (2024) Floating solar power loss due to motions induced by ocean waves: an experimental study. Ocean Engineering, Volume 312, Part 1, November 2024, Article number 118988
dc.identifier.elementsID552210
dc.identifier.issn0029-8018
dc.identifier.paperNo118988
dc.identifier.urihttps://doi.org/10.1016/j.oceaneng.2024.118988
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/22862
dc.identifier.volumeNo312
dc.languageEnglish
dc.language.isoen
dc.publisherElsevier BV
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S0029801824023266?via%3Dihub
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectCivil Engineering
dc.subject4005 Civil engineering
dc.subject4012 Fluid mechanics and thermal engineering
dc.subject4015 Maritime engineering
dc.titleFloating solar power loss due to motions induced by ocean waves: an experimental study
dc.typeArticle
dcterms.dateAccepted2024-08-10

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