Assessing the Global Wave Energy Potential

Mørk, Gunnar; Barstow, Stephen F.; Kabuth, Alina; Pontes, M.T.

doi:10.1115/omae2010-20473

Cited by 249 publications

(143 citation statements)

References 5 publications

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“…In particular, countries with suitable coastlines are able to exploit wave energy that is associated with the motion of the water surface, produced by wind currents blowing across the sea. Such a form of energy is not uniformly distributed throughout the world [3][4][5][6] and being generally weak in enclosed seas, is therefore scarcely used for energy exploitation. In particular, the wave energy availability in the Mediterranean Sea, in terms of mean annual wave power, gives values in a range of 2-12 kW/m [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Wave Energy Exploitation System Integrated in the Coastal Structure of a Mediterranean Port

2016

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A feasibility study for installing Wave Energy Converters (WECs) in a Mediterranean port is presented here. The final aim is to evaluate the possibility of building a green touristic infrastructure in a site having ordinary wave energy. In particular, the site of interest is Giardini Naxos, which is located in the northern Ionian coast of the island of Sicily (Italy). A preliminary estimation of the available energy has been carried out. The chosen type of WEC device is the Oscillating Water Column (OWC) system, which is found here to allow for good integration with the vertical breakwater needed for the extension of the existing port. Its feasibility is evaluated from the structural and economic point of view. Towards this aim, the system is tested in the laboratory for estimating the reflection coefficients and the pressures on the structure, which allow us to carry out the optimization of the OWC breakwater. Furthermore, the air turbine noise is estimated and an attenuation chamber is designed to reduce such noise to within acceptable levels. The economic feasibility study allows for an evaluation of the recuperation period of the investment, which is slightly less than the service life of the WEC device.

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Section: Introductionmentioning

confidence: 99%

Wave Energy Exploitation System Integrated in the Coastal Structure of a Mediterranean Port

2016

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“…Wave energy is known to have massive resources around the world: the global gross resource is about 3.7 TW, 1 and thus it is often envisaged that wave energy is able to significantly contribute energy mix and blue economy. In Europe, it is expected to supply some 10% of the European electricity needs-about half of today's total installed renewable generation if the technologies are matured (the combined wave and tidal energy in Europe would be 100 GW capacity by 2050 2 ).…”

Section: Introductionmentioning

confidence: 99%

Wave energy conversion of oscillating water column devices including air compressibility

Sheng

Lewis

2016

Journal of Renewable and Sustainable Energy

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Wave power calculations for a wave energy conversion device connected to a drogue J. Renewable Sustainable Energy 6, 013117 (2014) This paper presents an investigation on air compressibility in the air chamber and its effects on the power conversion of oscillating water column (OWC) devices. As it is well known that for practical OWC plants, their air chambers may be large enough for accommodating significant air compressibility, the "spring effect," an effect that is frequently and simply regarded to store and release energy during the reciprocating process of a wave cycle. Its insight effects on the device's performance and power conversion, however, have not been studied in detail. This research will investigate the phenomena with a special focus on the effects of air compressibility on wave energy conversion. Air compressibility itself is a complicated nonlinear process in nature, but it can be linearised for numerical simulations under certain assumptions for frequency domain analysis. In this research work, air compressibility in the OWC devices is first linearised and further coupled with the hydrodynamics of the OWC. It is able to show mathematically that in frequency-domain, air compressibility can increase the spring coefficients of both the water body motion and the device motion (if it is a floating device), and enhance the coupling effects between the water body and the structure. Corresponding to these changes, the OWC performance, the capture power, and the optimised Power Take-off (PTO) damping coefficient in the wave energy conversion can be all modified due to air compressibility. To validate the frequency-domain results and understand the problems better, the more accurate timedomain simulations with fewer assumptions have been used for comparison. It is shown that air compressibility may significantly change the dynamic responses and the capacity of converting wave energy of the OWC devices if the air chamber is very large. Published by AIP Publishing. [http://dx

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“…Cornett [1] investigated global wave energy resources based on a third-generation model, Wave Watch III (WAVEWATCH-III). Barstow et al [2] and Mork et al [3] assessed the wave energy potential of global oceans from deep waters to relatively nearshore waters based on the global wave dataset Worldwaves. Arinaga and Cheung [4] employed 10 years of wave field data from WAVEWATCH-III to evaluate the global wave energy.…”

Section: Introductionmentioning

confidence: 99%

Wave Energy Resource Assessment off the Coast of China around the Zhoushan Islands

et al. 2017

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Based on ERA-Interim reanalysis wave field data for the 36 years from 1979 to 2014, the temporal and spatial distributions and development potential of wave energy are studied in detail in the offshore and relatively nearshore waters adjacent to the Zhoushan Islands. The results show that areas of relatively high wave energy are located in the offshore waters to the east and southeast of the Zhoushan Islands. The potential wave energy in relatively nearshore waters (water depths from 10 m to 65 m) is relatively higher and especially in the nearshore waters to the southeast of the city of Taizhou, Zhejiang Province, which are suitable locations for wave energy development. The conclusions provide scientific guidance for wave energy development in the sea areas adjacent to the Zhoushan Islands.

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Assessing the Global Wave Energy Potential

Cited by 249 publications

References 5 publications

Wave Energy Exploitation System Integrated in the Coastal Structure of a Mediterranean Port

Wave Energy Exploitation System Integrated in the Coastal Structure of a Mediterranean Port

Wave energy conversion of oscillating water column devices including air compressibility

Wave Energy Resource Assessment off the Coast of China around the Zhoushan Islands

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