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Marine Renewable Energy: Extraction, Quantification, Optimisation and Environmental Impacts
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Marine Renewable Energy: Extraction, Quantification, Optimisation and Environmental Impacts

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Marine Energy".

Deadline for manuscript submissions: closed (30 January 2025) | Viewed by 3426

Special Issue Editor

Dr. Remo Cossu

E-Mail Website
Guest Editor
School of Civil Engineering, University of Queensland, Brisbane, QLD 4072, Australia
Interests: tidal and wave energy; renewable energy site characterisation; coastal and environmental engineering; sediment transport; blue economy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Marine renewable energy (MRE) has already emerged as a pivotal contributor to future sustainable energy generation. Notably, there has been a substantial upswing in offshore wind development and, to a lesser extent, in wave and tidal energy technologies in recent years.

Despite these significant strides in offshore MRE production, there are still substantial challenges related to the adoption of technologies for economically efficient clean energy, as well as installing and maintaining renewable energy equipment in harsh marine environments. Additionally, there is a lack of comprehensive understanding regarding the environmental impact of installing underwater infrastructure. Consequently, accurate prediction and effective monitoring of the influence of MRE conversion systems on coastal processes and the wider environment are crucial for advancing and commercializing this promising field.

This Special Issue will collect high-quality papers on the extraction, quantification, optimisation, and environmental impacts of marine renewable energy, fostering the exchange of new ideas for developing and utilizing ocean renewable energy. We welcome contributions encompassing, but not limited to, the following areas:

  • Innovative approaches for assessing the potential of ocean renewable energy and discussions on the possibility of exploitation;
  • Development, application, and optimisation of advanced technologies for utilising marine renewable energy sources, such as wind energy, wave energy, and tidal energy;
  • Sensing and monitoring technologies for marine renewable energy conversion systems;
  • Quantifying the environmental impacts of extracting energy from oceans;
  • Environmental and ecological impacts of the extraction and use of marine renewable energy;
  • Other studies related to ocean renewable energy.

Dr. Remo Cossu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • marine renewable energy
  • marine environment
  • offshore wind turbine
  • floating solar panels
  • wave and tide energy
  • emerging technologies
  • environmental impact
  • extraction
  • quantification
  • optimisation
 

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

22 pages, 10987 KiB  
Article
Investigating Tidal Stream Turbine Array Performance Considering Effects of Number of Turbines, Array Layouts, and Yaw Angles
by Can Zhang, Kai Zhang, Xiaoming Cheng, Xiangfeng Lin, Jisheng Zhang, Chengsheng Wu and Zhihao Ren
J. Mar. Sci. Eng. 2024, 12(12), 2325; https://doi.org/10.3390/jmse12122325 - 18 Dec 2024
Viewed by 652
Abstract
The performance of a tidal stream turbine array can be affected by numerous factors. Investigating the connection between array power production and these factors will be helpful in improving the development of tidal stream energy. This study investigates the impact of array layout, [...] Read more.
The performance of a tidal stream turbine array can be affected by numerous factors. Investigating the connection between array power production and these factors will be helpful in improving the development of tidal stream energy. This study investigates the impact of array layout, turbine number, and yaw angles on turbine array performance using an open-source coastal ocean modelling system. The results show that the total power output of the turbine array rises with the number of turbines. Under realistic conditions, there are not many differences in power output between aligned and staggered turbine array configurations. By extending the distance between the turbines, the array power output can be improved in both layouts. It appears that considering each turbine’s yaw angle can improve array power generation, since the downstream turbines will greatly benefit from the steering wake of the upstream turbines. Furthermore, using a gradient-based optimization algorithm to simultaneously adjust the yaw angles and turbine positions will boost the turbine array’s efficiency more than just optimizing the turbine position alone. Full article
(This article belongs to the Special Issue Marine Renewable Energy: Extraction, Quantification, Optimisation and Environmental Impacts)
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16 pages, 1381 KiB  
Article
Deep Water Subsea Energy Storage, Lessons Learned from the Offshore Oil and Gas Industry
by Rasmus Juhlin, Alexander H. Slocum and Mohsen Assadi
J. Mar. Sci. Eng. 2024, 12(12), 2288; https://doi.org/10.3390/jmse12122288 - 12 Dec 2024
Viewed by 1170
Abstract
In a future where a large portion of power will be supplied by highly intermittent sources such as solar- and wind-power, energy storage will form a crucial part of the power mix ensuring that there is enough flexibility in the system to cope [...] Read more.
In a future where a large portion of power will be supplied by highly intermittent sources such as solar- and wind-power, energy storage will form a crucial part of the power mix ensuring that there is enough flexibility in the system to cope with the intermittency. With further development of pumped storage hydro constrained by the lack of remaining suitable topography, a novel Subsea Pumped Hydro Storage concept has emerged as a promising solution to utilize the ocean space for large-scale energy storage. While previous publications address thermodynamic efficiency limits, there is a notable lack of research on turbine selection, design, and cost estimation based on best practices. This paper presents a comprehensive overview of current state-of-the-art subsea engineering and its significant achievements pioneered by the oil and gas industry. This paper introduces a robust methodological framework for calculating the costs of concrete SPHS tanks, factoring in longevity and best installation practices for structures designed to endure for half a century. The results indicate that with an optimized design, the cost of an SPSH concrete storage tank is approximately $0.15/Wh. This work lays the groundwork for future advancements in SPHS, building on the substantial progress within subsea engineering over recent decades, and marks a significant step towards realizing the potential of this concept in the renewable energy landscape. Full article
(This article belongs to the Special Issue Marine Renewable Energy: Extraction, Quantification, Optimisation and Environmental Impacts)
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19 pages, 1407 KiB  
Article
Optimal Control of Nonlinear, Nonautonomous, Energy Harvesting Systems Applied to Point Absorber Wave Energy Converters
by Houssein Yassin, Tania Demonte Gonzalez, Kevin Nelson, Gordon Parker and Wayne Weaver
J. Mar. Sci. Eng. 2024, 12(11), 2078; https://doi.org/10.3390/jmse12112078 - 18 Nov 2024
Viewed by 945
Abstract
Pursuing sustainable energy solutions has prompted researchers to focus on optimizing energy extraction from renewable sources. Control laws that optimize energy extraction require accurate modeling, often resulting in time-varying, nonlinear differential equations. An energy-maximizing optimal control law is derived for time-varying, nonlinear, second-order, [...] Read more.
Pursuing sustainable energy solutions has prompted researchers to focus on optimizing energy extraction from renewable sources. Control laws that optimize energy extraction require accurate modeling, often resulting in time-varying, nonlinear differential equations. An energy-maximizing optimal control law is derived for time-varying, nonlinear, second-order, energy harvesting systems. We demonstrate that sustaining periodic motion under this control law when subjected to periodic disturbances necessitates identifying appropriate initial conditions, inducing the system to follow a limit cycle. The general optimal solution is applied to two point absorber wave energy converter models: a linear model where the analytical derivation of initial conditions suffices and a nonlinear model demanding a numerical approach. A stable limit cycle is obtained for the latter when the initial conditions lie within an ellipse centered at the origin of the phase plane. This work advances energy-maximizing optimal control solutions for nonautonomous nonlinear systems with application to point absorbers. The results also shed light on the significance of initial conditions in achieving physically realizable periodic motion for periodic energy harvesting systems. Full article
(This article belongs to the Special Issue Marine Renewable Energy: Extraction, Quantification, Optimisation and Environmental Impacts)
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