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Gregorio Iglesias - One of the best experts on this subject based on the ideXlab platform.
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Wave Energy status in Asia
Ocean Engineering, 2018Co-Authors: Danial Khojasteh, Seyed Mahmood Mousavi, William Glamore, Gregorio IglesiasAbstract:Abstract Climate change can bring about destructive effects (e.g., rising temperatures, heavy rains and droughts) to countries worldwide, severely influencing future growth and degrading the quality of life. Asia, which is home to the majority of the world's population, is particularly vulnerable to these impacts. Asian countries are responsible for more than half of the global CO2 output and renewable Energy production is limited. Unabated climate change may endanger previous economic developments and place the region's future at serious risk. Therefore, there is a clear need to increase the share of renewable Energy via various sources. Importantly, the continent has extensive coastlines, with abundant Wave Energy in many areas. The main objectives of this study are to review the current status of Wave Energy in Asia and to provide an overview of the areas that may be considered for future development. For this purpose, Asia is divided into four regions: East, Southeast, South and West. Active Wave Energy projects are highlighted, and the Wave Energy potential is discussed country by country based on the data available in the literature, including suggested sites for development.
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Enhancing Wave Energy Competitiveness through Co-Located Wind and Wave Energy Farms. A Review on the Shadow Effect
Energies, 2015Co-Authors: S. Astariz, Gregorio IglesiasAbstract:Wave Energy is one of the most promising alternatives to fossil fuels due to the enormous available resource; however, its development may be slowed as it is often regarded as uneconomical. The largest cost reductions are expected to be obtained through economies of scale and technological progress. In this sense, the incorporation of Wave Energy systems into offshore wind Energy farms is an opportunity to foster the development of Wave Energy. The synergies between both renewables can be realised through these co-located Energy farms and, thus, some challenges of offshore wind Energy can be met. Among them, this paper focuses on the longer non-operational periods of offshore wind turbines—relative to their onshore counterparts—typically caused by delays in maintenance due to the harsh marine conditions. Co-located Wave Energy converters would act as a barrier extracting Energy from the Waves and resulting in a shielding effect over the wind farm. On this basis, the aim of this paper is to analyse Wave Energy economics in a holistic way, as well as the synergies between Wave and offshore wind Energy, focusing on the shadow effect and the associated increase in the accessibility to the wind turbines.
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The economics of Wave Energy: A review
Renewable & Sustainable Energy Reviews, 2015Co-Authors: S. Astariz, Gregorio IglesiasAbstract:Wave Energy is arguably one of the most promising renewables. Less developed at present than other renewables, the existing models to estimate the costs of a Wave Energy project are often oversimplified, and the resulting scatter in the economic assessments weighs on the confidence of potential investors and constitutes therefore an impediment to the development of Wave Energy. Indeed, understanding the costs of Wave Energy is one of the main fields of research in marine renewable Energy. In this context, the main objective of this paper is to review all the factors that must be considered in an economic analysis of Wave Energy, including a number of elements that are usually overlooked. In the process we characterise the direct and indirect costs of a Wave farm – preliminary costs, construction, operation and maintenance and decommissioning cost – as well as its prospective incomes. For each of them a reference value is presented, together with a generic formula for its calculation. Moreover, the levelised cost, i.e., the production cost of an Energy unit (1kWh), is compared between various Energy sources, and on these grounds conclusions on the profitability and competitiveness of Wave Energy are drawn. In sum, this work reviews the state of the art and sets the basis for a thorough economic analysis of Wave Energy.
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On the Wave Energy resource of Peru
Energy Conversion and Management, 2015Co-Authors: Mario Lopez, M. Veigas, Gregorio IglesiasAbstract:This is the first assessment of the Wave Energy resource in Peru, an emerging country with an increasing Energy demand and a high dependence on fossil fuels. On the basis of Wave buoy measurements, we characterize the offshore Wave Energy resource and analyze its temporal variability, comparing the results with those obtained in previous works for other regions. A Wave propagation numerical model (SWAN) is used to determine the nearshore spatial distribution of Wave Energy. A total of 357 offshore sea states, representing 90% of the Wave Energy and 94% of the time in an average year, were propagated. The Wave Energy in Peru presents a resource exceeding by more than seven times the total electric demand of the country. Because of the large amount of resource available and its low seasonal variation, Wave Energy must be considered in Peru as an alternative to conventional Energy resources.
L.j. Duckers - One of the best experts on this subject based on the ideXlab platform.
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DEVELOPMENTS IN Wave Energy
Energy Conservation in Buildings, 2012Co-Authors: L.j. DuckersAbstract:Publisher Summary This chapter provides a historical overview of the developments in Wave Energy. Ocean Waves are generated by wind passing over extensive stretches of water. As the wind is originally derived from solar Energy, Waves are considered to be a stored form of solar Energy. The possibility of extracting Energy from ocean Waves has intrigued man for centuries but it is only in the past two decades that technically suitable devices have been proposed. The chapter illustrates the Wave-Energy mates for Western Europe. The Energy potentially available from the European Wave resource is enormous. The variation in Wave height, period, and power with time means that devices have to be carefully designed for optimal Energy capture and be able to withstand the considerable loadings that result from the largest storms. In order to capture Energy from sea Waves, it is necessary to intercept the Waves with a structure that can respond in an appropriate manner to the forces applied to it by the Waves. If the structure is fixed to the seabed or seashore, it is easy to see that some part of the structure may be allowed to move with respect to the fixed structure and hence convert the Wave Energy into some mechanical Energy. The chapter further highlights the high capital costs of Wave Energy. Wave Energy is a long-term technology; it will take a few more years of research and development to produce prototypes of some devices and to refine the design of others.
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Wave Energy; crests and troughs
Renewable Energy, 1994Co-Authors: L.j. DuckersAbstract:Wave Energy has had a short but fascinating history, and faces an uncertain future. This paper examines the activities of various countries in research and development of Wave Energy programmes. The changes in the political fortunes of research teams have often been more extreme than the Wave climates that they seek to harness.
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Wave Energy; crests and troughs
Renewable Energy, 1994Co-Authors: L.j. DuckersAbstract:Abstract Wave Energy has had a short but fascinating history, and faces an uncertain future. This paper examines the activities of various countries in research and development of Wave Energy programmes. The changes in the political fortunes of research teams have often been more extreme than the Wave climates that they seek to harness. The potential contribution to Energy supplies from Wave Energy technology is considerable, but is the technology economically viable and politically acceptable? The current state of developments will be reviewed and the prospects from small scale schemes to large floating arrays will be discussed.
Jorgen Lovseth - One of the best experts on this subject based on the ideXlab platform.
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Ocean Wave Energy
Energy Policy, 1991Co-Authors: Johannes Falnes, Jorgen LovsethAbstract:Ocean Waves may potentially contribute one TW to global Energy supply. The time variablity of Wave Energy can be smoothed by integration with the general Energy supply system. Many different Wave power plants, some of them multi-purpose, have been proposed, assessed, and cost estimated. After a subsidized introductory phase, Wave Energy is expected to be economically competitive, helped by the development of new designs and technical improvements, and by historically established experience. Only slight environmental impact is expected. Operation and maintenance may mean an economic boost to coastal societies. © 1991.
Johannes Falnes - One of the best experts on this subject based on the ideXlab platform.
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A REVIEW OF Wave-Energy EXTRACTION
Marine Structures, 2007Co-Authors: Johannes FalnesAbstract:Comparing ocean-Wave Energy with its origin, wind Energy, the former is more persistent and spatially concentrated. In this paper Wave spectrum parameters related to transport, distribution and variability of Wave Energy in the sea are educed. Many different types of Wave-Energy converters, of various categories, have been proposed. It is useful to think of primary conversion of Wave Energy by an oscillating system as a Wave-interference phenomenon. Corresponding to optimum Wave interference, there is an upper bound to the amount of Energy that can be extracted from a Wave by means of a particular oscillating system. Taking physical limitations into account, another upper bound, for the ratio of extracted Energy to the volume of the immersed oscillating system, has been derived. Finally, the significance of the two different upper bounds is discussed.
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Ocean Wave Energy
Energy Policy, 1991Co-Authors: Johannes Falnes, Jorgen LovsethAbstract:Ocean Waves may potentially contribute one TW to global Energy supply. The time variablity of Wave Energy can be smoothed by integration with the general Energy supply system. Many different Wave power plants, some of them multi-purpose, have been proposed, assessed, and cost estimated. After a subsidized introductory phase, Wave Energy is expected to be economically competitive, helped by the development of new designs and technical improvements, and by historically established experience. Only slight environmental impact is expected. Operation and maintenance may mean an economic boost to coastal societies. © 1991.
Tunde Aderinto - One of the best experts on this subject based on the ideXlab platform.
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Ocean Wave Energy Converters: Status and Challenges
Energies, 2018Co-Authors: Tunde AderintoAbstract:Wave Energy is substantial as a resource, and its potential to significantly contribute to the existing Energy mix has been identified. However, the commercial utilization of Wave Energy is still very low. This paper reviewed the background of Wave Energy harvesting technology, its evolution, and the present status of the industry. By covering the theoretical formulations, Wave resource characterization methods, hydrodynamics of Wave interaction with the Wave Energy converter, and the power take-off and electrical systems, different challenges were identified and discussed. Solutions were suggested while discussing the challenges in order to increase awareness and investment in Wave Energy industry as a whole.
