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- Report:
Marine Energy Programme Board
Wave and tidal energy are the last two untapped global renewable resources, with an overall potential comparable to other major renewable resources. UK entrepreneurs, academic institutions and companies have invented, researched, developed and trialled the majority of leading technologies in this space. Many of these are now ready to make the move to commercial demonstration and deployment and…
- Report:
Regeneris Consulting Ltd and Cardiff Business School
Headline Summary of Findings
Purpose of the Report
i. Regeneris Consulting and the Welsh Economy Research Unit at Cardiff Business School were appointed by the Welsh Government to undertake an assessment of the potential economic contribution of marine energy to Wales. The report examines the economic benefits for Wales from future development of the sector using three…
- Journal Article:
Edmunds et al.
Efficient numerical simulation of renewable energy wind and tidal turbines is important for the layout of devices in farms. Computational Fluid Dynamics (CFD) approaches using blade geometry resolved models are computationally expensive. Therefore, most array models use source term representations of rotors, normally actuator disk, actuator line or blade element disk. Unfortunately, these…
- Journal Article:
Faraggiana et al.
A submerged wave device generates energy from the relative motion of floating bodies. In WaveSub, three floats are joined to a reactor; each connected to a spring and generator. Electricity generated damps the orbital movements of the floats. The forces are non-linear and each float interacts with the others. Tuning to the wave climate is achieved by changing the line lengths so there is a…
- Journal Article:
Ruehl et al.
The floating oscillating surge wave energy converter (FOSWEC) is a wave energy converter that was designed, built, and tested to develop an open-access data set for the purpose of numerical model validation. This paper details the experimental testing of the 1:33-scale FOSWEC in a directional wave basin, and compares experimental data to numerical simulations using the wave energy converter…
- Journal Article:
Ling et al.
Ocean wave energy is a promising area of renewable energy development. However, there are unique operational challenges, particularly with regards to modeling, estimation, and control. Model Predictive Control (MPC) is a widely studied control approach that has strong potential for successful application to ocean wave energy conversion. It combines a predictive element, which is necessary for…
- Journal Article:
Neary et al.
Classification systems for wave energy resources and wave energy converter (WEC) technologies could provide similar benefits to those for the wind energy industry: resource classification facilitating reconnaissance studies and project planning at both regional and national scales; and WEC classification streamlining and reducing costs of WEC device design and manufacturing. In the present…
- Book Chapter:
Haas et al.
Hyrdokinetic tidal energy is the conversion of tidal current kinetic energy to another more useful form, frequently electricity. As with any other form of renewable energy, resource assessments are essential for the tidal energy project planning and design process. While tidal currents have significant spatial and temporal variability, the predictability of tidal flows makes deterministic…
- Report:
Marine Energy Pembrokeshire
In late 2014, Marine Energy Pembrokeshire carried out a survey of the marine energy industry in Wales. The purpose was to calculate the economic contribution of the sector to date, to understand future development plans, and what this could potentially contribute to the low carbon economy in Wales. The analysis covers wave, tidal stream and tidal range energy. Already in Wales, technology and…
- Journal Article:
Chen et al.
Based on the Navier-Stokes (RANS) equations, a three-dimensional (3-D) mathematical model for the hydrodynamics and structural dynamics of a floating point-absorbing wave energy converter (WEC) with a stroke control system in irregular and extreme waves is presented. The model is validated by a comparison of the numerical results with the wave tank experiment results of other researchers. The…
- Journal Article:
Tom et al.
The aim of this research is to use spectral techniques in evaluating the irregular wave performance of a novel wave energy converter concept that combines an oscillating surge wave energy converter with control surfaces. The control surfaces allow the wave energy converter to have a time-varying geometry that enables the hydrodynamic exciting and radiation coefficients to be altered. In the…
- Journal Article:
Liu et al.
Raft-type wave energy converter (WEC) is a multi-mode wave energy conversion device, using the relative pitch motion to drive its hydraulic power take-off (PTO) units for capturing energy from the ocean waves. The hydraulic PTO unit as its energy conversion module plays a significant role in storing large qualities of energy and making the output power smooth. However, most of the previous…
- Journal Article:
Zhao et al.
An analytical model is developed based on linear potential flow theory and matching eigenfunction expansion technique to investigate the hydrodynamics of a two-dimensional floating structure. This structure is an integration system consisting of a breakwater and an oscillating buoy wave energy converter (WEC). It is constrained to heave motion, and linear power take-off (PTO) damping is used…
- Journal Article:
Collins et al.
A wide range of wave energy converter (WEC) designs exists, and the SeaWave WEC uses an unstable buckled spine mode of operation. The SeaWave consists of a hose and buckled spine-diaphragm, which pumps air along the device under wave action. A physical model and finite element analysis (FEA) is compared to a previous theoretical model in this paper. The FE model was developed in ABAQUS 6.14…
- Journal Article:
Hansen
Some energy policies aim to increase the share of renewable energy in the most cost-effective way, but the challenge is how to assess the costs of integrating these technologies into an energy system. This article analyzes two cost estimation methods, the Levelized Cost of Energy (LCOE) and the Energy System Analysis (ESA) methods. These methods are compared for electricity, decentralized…
- Journal Article:
Triasdian et al.
Ocean wave energy (OWE) is one of many promising renewable energy sources with a high energy density. By using the average wave energy data of 21-year WAVEWATCH-III (WW3) model, some areas were discovered to have a great potential for the wave energy generation. This present study was evaluating the selected Wave Energy Converters (WEC) and determining their capability to do the energy capture…
- Thesis:
Jansson and Orgard
The future energy production must be renewable to reduce the carbon emissions and ocean energy technologies provide solutions. Ocean waves have great potential, 0.1% of the energy in ocean waves could to cover the global energy demand five times over. Most of the ocean energy technologies are considered to be in a precommercial phase and need technical development. In 2016 a Swedish company,…
- Journal Article:
Zhao et al.
An integrated breakwater-WEC system, which comprises of an array of heaving Oscillating Buoy Wave Energy Converters (OB-WECs) attached at the weather side of a fixed breakwater, is proposed in this study. Detailed experiments have been undertaken to investigate the heave-response-amplitude operator (HRAO), the wave force on the WEC devices and the transmission coefficient of the breakwater-WEC…
- Conference Paper:
Sunter et al.
The technically recoverable global wave energy resource is estimated to be between 2 PWh/year and 5 5 PWh/year, approximately 12% and 32% of global electricity consumption Despite wave energy's vast global potential, there has been relatively little commercial deployment to date. There is large variation in both the current estimated and future expected electricity generation costs associated…
- Journal Article:
Michele et al.
A mathematical model is developed to analyse the hydrodynamics of a novel oscillating water column (OWC) in a hybrid wind-wave energy system. The OWC has a coaxial cylindrical structure in which the internal cylinder represents the mono-pile of an offshore wind turbine while the external cylinder has a skirt whose scope is to guide the wave energy flux inside the chamber. This…
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