Journal articles: 'Tidal renewable energy'

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Novico, Franto, Evi Hadrijantie Sudjono, Andi Egon, David Menier, Manoj Methew, and Munawir Bintang Pratama. "Tidal Current Energy Resources Assessment in the Patinti Strait, Indonesia." International Journal of Renewable Energy Development 10, no. 3 (February 24, 2021): 517–25. http://dx.doi.org/10.14710/ijred.2021.35003.

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Indonesia is currently intensively developing its renewable energy resource and targets at least 23% by 2025. As an archipelago country, Indonesia has the potential to benefit from its abundant renewable energy resources from its offshore regions. However, the short tidal range of mixed semi-diurnal and the suitable tidal turbine capacity may hinder marine renewable energy development in Indonesian waters. This paper presents higher-order hydrodynamic numerical models to provide spatial information for tidal current resource assessment of the Patinti Strait. The present study applied the hydrographic and oceanographic method to produce input of the numerical model. Based on the selected simulation analysis, the highest current speed could be identified around Sabatang and Saleh Kecil Island with up to 2.5 m/s in P1 and 1.7 m/s in P4. Besides, the operational hours for the two observation points are 69% and 74.5%, respectively. The results indicate that this location is of prime interest for tidal turbine implementation as an energy source, for medium capacity (300 kW) and high capacity (1 MW).

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Nicholls-Lee, R. F., and S. R. Turnock. "Tidal energy extraction: renewable, sustainable and predictable." Science Progress 91, no. 1 (March 1, 2008): 81–111. http://dx.doi.org/10.3184/003685008x285582.

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Sheehan, Emma V., Sarah C. Gall, Sophie L. Cousens, and Martin J. Attrill. "Epibenthic Assessment of a Renewable Tidal Energy Site." Scientific World Journal 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/906180.

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Concern over global climate change as a result of fossil fuel use has resulted in energy production from renewable sources. Marine renewable energy devices provide clean electricity but can also cause physical disturbance to the local environment. There is a considerable paucity of ecological data at potential marine renewable energy sites that is needed to assess potential future impacts and allow optimal siting of devices. Here, we provide a baseline benthic survey for the Big Russel in Guernsey, UK, a potential site for tidal energy development. To assess the suitability of proposed sites for marine renewable energy in the Big Russel and to identify potential control sites, we compared species assemblages and habitat types. This baseline survey can be used to select control habitats to compare and monitor the benthic communities after installation of the device and contribute towards the optimal siting of any future installation.

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Soejianto, Eko, Khansa Hanifa Zahra, and Suci Nur Hidayah. "Tidal Energy Utilization of Larantuka Strait by Dual Tidal Turbines to Increase National Energy Resilience." Proceeding International Conference on Science and Engineering 2 (March 1, 2019): 73–77. http://dx.doi.org/10.14421/icse.v2.57.

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Currently, renewable energy can only support 5% of national energy needs. Meanwhile, in 2035 renewable energy targeted to sustain 14% of total national energy demand. The proper way for optimizing the renewable energy is needed to actualize the target. Tidal energy as one of the potentials that are still being developed and need more attention from the government. Tidal can be used for natural energy resource since it has zero emission, produce big energy, and has no impact to weather. Larantuka Strait located in Flores island, Nusa Tenggara Timur province can produce tidal velocity up to 2.859 m/s with water density as much as 1.025 gr/cc. In utilizing this energy, we use new innovation by using dual tidal turbines which placed at the foot of Palmerah Bridge. The construction of Palmerah Bridge is built both by the government of Flores Island and Adonara Island. Dual tidal turbines are more efficient than singl e turbine by reason of tidal that has passed through the first turbine can be used again for the second turbine. The using of the generator is meant to convert kinetic energy that produced by dual tidal turbines. To convert ocean currents into electrical energy optimally, it is necessary to plan turbine designs that are in accordance with the conditions of ocean currents and the surrounding environment such as current velocity, wind influences and so on. Horizontal-axis tidal turbine (HATTs) is one of the technologies that are being developed and tested in prototype form by several companies, an efficient blade design is very important for the success of the HATTs. The amount of turbine needs, in this case, is 15 turbines with each turbine’s length is 10 meters. The turbines installed in bridge’s column along 800 meters. Estimate electricity can be generated by the turbine is 1.48 Mega Watt (MW).

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Clery, D. "RENEWABLE ENERGY: U.K. Ponders World's Biggest Tidal Power Scheme." Science 320, no. 5883 (June 20, 2008): 1574. http://dx.doi.org/10.1126/science.320.5883.1574.

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Kusuma, C. "Tidal Flow Renewable Energy Potential In The Capalulu Strait." IOP Conference Series: Materials Science and Engineering 1052, no. 1 (January 1, 2021): 012028. http://dx.doi.org/10.1088/1757-899x/1052/1/012028.

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Abad, Mohammad Seydali Seyf, Jennifer A. Hayward, Saad Sayeef, Peter Osman, and Jin Ma. "Tidal Energy Hosting Capacity in Australia’s Future Energy Mix." Energies 14, no. 5 (March 8, 2021): 1479. http://dx.doi.org/10.3390/en14051479.

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This paper outlines a methodology to determine the amount of renewable energy that can be accommodated in a power system before adverse impacts such as over-voltage, over-loading and system instability occur. This value is commonly known as hosting capacity. This paper identifies when the transmission network local hosting capacity might be limited because of static and dynamic network limits. Thus, the proposed methodology can effectively be used in assessing new interconnection requests and provides an estimation of how much and where the new renewable generation can be located such that network upgrades are minimized. The proposed approach was developed as one of the components of the AUSTEn project, which was a three-year project to map Australia’s tidal energy resource in detail and to assess its economic feasibility and ability to contribute to the country’s energy needs. In order to demonstrate the effectiveness of the proposed approach, two wide area networks were developed in DIgSILENT PowerFactory based on actual Australian network data near two promising tidal resource sites. Then, the proposed approach was used to assess the local tidal hosting capacity. In addition, a complementary local hosting capacity analysis is provided to show the importance of future network upgrades on the locational hosting capaity.

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Ferro, Benoit Dal. "Wave and tidal energy." Refocus 7, no. 3 (May 2006): 46–48. http://dx.doi.org/10.1016/s1471-0846(06)70574-1.

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Haque, Mohammad Asadul, and Mst Sujata Khatun. "Tidal Energy: Perspective of Bangladesh." Journal of Bangladesh Academy of Sciences 41, no. 2 (January 29, 2018): 201–15. http://dx.doi.org/10.3329/jbas.v41i2.35498.

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Bangladesh is blessed by the nature with renewable resources that are used all over the world in a wide range but in our country it is limited. The country has vast ocean area with various power resources such as Wave energy, Ocean Thermal Energy Conversion (OTEC) and Tidal energy. In the Bay of Bengal, the tidal range and tidal stream speed indicate the potentiality of tidal power generation in Bangladesh. This paper describes various methods of utilizing tidal power to generate electricity and assess the tidal energy resources of three potential sites of Bangladesh. The tidal data recorded by the Department of Hydrography of The Chittagong Port Authority (CPA) and Bangladesh Inland Water Transport Authority (BIWTA) have been analyzed. This study clearly indicates the bright prospects of tidal power in Bangladesh.Journal of Bangladesh Academy of Sciences, Vol. 41, No. 2, 201-215, 2017

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Cheng, Xiao Qing, Xi Zhang, and Li Xin Yi. "A Review on the Development of Tidal Energy in China." Advanced Materials Research 953-954 (June 2014): 637–49. http://dx.doi.org/10.4028/www.scientific.net/amr.953-954.637.

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The global economic and social developments depend largely on fossil fuels nowadays. To cope with energy crisis and environment problems caused by consumption of fossil fuels, the renewable energy exploitation is an alternative path. As one kind of renewable ocean energy which can be applied into production, tidal energy is mainly utilized in electricity generation. China has abundant tidal energy resource, which mainly distribute in the southeast coastal areas where power supply is insufficient. China's tidal power generation started in 1958, and some experience and technologies have been accumulated from the long-time history of tidal power station construction and operation. At present, China’s tidal energy’s development and utilization are still in low level, and remain plagued by several challenges, such as high cost, and insufficiency of preferential policies and regulations. While, China's tidal power generation must be very promising in the foreseeable future, with a great deal of attention paid to the utilization of renewable energy and the perception of sustainable development.

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Hao, Jia Ling, Hui Li, Ji Peng, and Ke Ren Qi. "Review on the Exploitation Approaches of Tidal Power." Applied Mechanics and Materials 361-363 (August 2013): 307–11. http://dx.doi.org/10.4028/www.scientific.net/amm.361-363.307.

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Development of renewable energy and its associated basic theory and technology application is gradually becoming a global concernd hot issue. Tidal energy, positioned as one of the renewable energy, is named most promising new green energy with hydropower and wind power. Four typical exploitation approaches, including classical tidal power station, tidal current extraction, usage of natural tidal level range between a bay and the latest Dynamic Tidal Power(DTP), for tidal power are reviewed here. Both their basic concepts and application status are addressed, especially for the new concept of DTP. Some comparisons and summary of these tidal energy utilization are present in the conclusions part.

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Devine-Wright, Patrick. "Place attachment and public acceptance of renewable energy: A tidal energy case study." Journal of Environmental Psychology 31, no. 4 (December 2011): 336–43. http://dx.doi.org/10.1016/j.jenvp.2011.07.001.

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Xue, Jingjing, Reza Ahmadian, and Roger Falconer. "Optimising the Operation of Tidal Range Schemes." Energies 12, no. 15 (July 25, 2019): 2870. http://dx.doi.org/10.3390/en12152870.

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Marine renewable energy, including tidal renewable energy, is one of the less exploited sources of energy that could contribute to energy demand, while reducing greenhouse gas emissions. Amongst several proposals to build tidal range structure (TRS), a tidal lagoon has been proposed for construction in Swansea Bay, in the South West of the UK, but this scheme was recently rejected by the UK government due to the high electricity costs. This decision makes the optimisation of such schemes more important for the future. This study proposes various novel approaches by breaking the operation into small components to optimise the operation of TRS using a widely used 0-D modelling methodology. The approach results in a minimum 10% increase in energy output, without the inclusion of pumping, in comparison to the maximum energy output using a similar operation for all tides. This increase in energy will be approximately 25% more when pumping is included. The optimised operation schemes are used to simulate the lagoon operation using a 2-D model and the differences between the results are highlighted.

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Ghefiri, Khaoula, Aitor Garrido, Eugen Rusu, Soufiene Bouallègue, Joseph Haggège, and Izaskun Garrido. "Fuzzy Supervision Based-Pitch Angle Control of a Tidal Stream Generator for a Disturbed Tidal Input." Energies 11, no. 11 (November 1, 2018): 2989. http://dx.doi.org/10.3390/en11112989.

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Energy originating in tidal and ocean currents appears to be more intense and predictable than other renewables. In this area of research, the Tidal Stream Generator (TSG) power plant is one of the most recent forms of renewable energy to be developed. The main feature of this energy converter is related to the input resource which is the tidal current speed. Since its behaviour is variable and with disturbances, these systems must be able to maintain performance despite the input variations. This article deals with the design and control of a tidal stream converter system. The Fuzzy Gain Scheduling (FGS) technique is used to control the blade pitch angle of the turbine, in order to protect the plant in the case of a strong tidal range. Rotational speed control is investigated by means of the back-to-back power converters. The optimal speed is provided using the Maximum Power Point Tracking (MPPT) strategy to harness maximum power from the tidal speed. To verify the robustness of the developed methods, two scenarios of a disturbed tidal resource with regular and irregular conditions are considered. The performed results prove the output power optimization and adaptive change of the pitch angle control to maintain the plant within the tolerable limits.

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Zainol, Mohd Zaifulrizal, Haziatul Najihah Zana Rahim, Wardiah Dahalan, Atzroulnizam Abu, Muhamad Fadli Ghani, and Ismail Zainol. "Potential Area to Harness the Tidal Energy at West Coast Peninsular Malaysia." Applied Mechanics and Materials 785 (August 2015): 637–41. http://dx.doi.org/10.4028/www.scientific.net/amm.785.637.

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Malaysia nowadays depends heavily on conventional energy resource for generating electricity and transportation. This will give negative impact and trigger other problems if not well managed. Therefore, it is very important to increase the use of renewable energy especially the tidal energy as the tidal energy is more predictable and reliable renewable energy source. A kinetic energy produced by the tidal differences will be used to generate electricity and involves the use of a tidal turbine. There are two approaches that are being used to harness the tidal energy for the generation of electricity which are barrage approach and tidal stream approach. This paper identify the potential region along west coast of peninsular Malaysia that has higher potential power generation for harnessing tidal energy and study which approach suitable to be applied. From the results, show that the highest potential power generation for harnessing tidal energy is at Pelabuhan Klang with the average power availability is 591.19kW while the lowest is at Tanjung Keling with the average potential power generation is 52.75kW.

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Majdi Nasab, Navid, Jeff Kilby, and Leila Bakhtiaryfard. "The Potential for Integration of Wind and Tidal Power in New Zealand." Sustainability 12, no. 5 (February 28, 2020): 1807. http://dx.doi.org/10.3390/su12051807.

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This research focuses on proposing and evaluating an optimized hybrid system of wind and tidal turbines operating as a renewable energy generating unit in New Zealand. Literature review indicates increasing worldwide investment in offshore renewable energy in recent years. Offshore energy shows a high potential as an alternative energy generation solution to that of fossil fuels. Using the capacities of wind and tidal power in renewable technologies would be a suitable alternative for fossil fuels and would help prevent their detrimental effects on the environment. It is a cost-effective procedure for the power generation sector to maximize these renewables as a hybrid system. At the design phase, turbine types appropriate to environmental conditions for an area with high wind speed and tidal flow need to be considered. When selecting which turbines should be used, horizontal or vertical axis, number and length of blades, and optimized rotational speed are all important to get maximum capacity from either the wind or tidal energy for the hybrid system. Comprehensive simulation models of the hybrid system are now being set up, using several available commercial software packages such as QBlade, Simulink, and RETScreen. Several different parameters will be required for these simulation models to run in order to test performance, capacity and efficiency of the proposed hybrid system. To decide which regions are suitable for the hybrid system, it will be necessary to analyze available wind and tide records from NIWA, and online databases such as GLOBAL ATLAS. This next phase of research will aim to create optimized scenarios for the hybrid model by considering the effect of wind and water speed on performance. After deciding which region and scenarios are suitable, it will also be necessary to evaluate the costs and returns of a hybrid system. This final phase will be performed using the RETScreen simulation model.

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Manasseh, Richard, Kathleen L. McInnes, and Mark A. Hemer. "Pioneering developments of marine renewable energy in Australia." International Journal of Ocean and Climate Systems 8, no. 1 (February 1, 2017): 50–67. http://dx.doi.org/10.1177/1759313116684525.

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The history of ocean renewable energy developments in Australia is reviewed. A layperson’s description of the physical operating principle is given for the main classes of technology that have been tested in Australian waters. The Australian marine domain possesses among the world’s most energetic wave-energy resources, driven by powerful mid-latitude westerly winds. The northern coast of Western Australia has tidal ranges significant on a global scale, and some geographical features around the continent have local tidal resonances. The East Australian Current, one of the world’s major western boundary currents, runs along the eastern Australian seaboard, offering potential for ocean-current energy. Sea-water temperatures in the tropical north-east of Australia may permit ocean thermal energy conversion. While this abundance of resources makes Australia an ideal location for technology development, the population is highly concentrated in a few large cities, and transmission infrastructure has developed over a century to supply cities from traditional power plants. Several wave-power developments have resulted in demonstration of deployments in Australian waters, three of which have been grid connected. Trials of tidal devices have also occurred, while other classes of ocean renewable energy have not yet been trialled. The prospects for marine renewable energy in Australia are discussed including non-traditional applications such as coastal protection and energy export.

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Oronyi Ohuru, Aron. "A Review of Tidal Power Potential in Kenya." Multidisciplinary Journal of Technical University of Mombasa 1, no. 2 (May 26, 2021): 1–4. http://dx.doi.org/10.48039/mjtum.v1i2.31.

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The world is experiencing a dynamic shift in terms of energy production, with nations focusing more on renewable sources of energy. This is because renewable energy sources are eco-friendly, reserves of fossil fuels around the world are getting depleted, and unstable market prices of these fossil fuels. Here in Kenya, the revolution has been felt, especially with heavy investment in geothermal and wind power. Since hydroelectric, geothermal and wind power account for more than 70% of energy consumption in Kenya, it is evident that Kenya is taking strides in the correct direction. However, tidal energy is still left behind in this foray, despite its large potential due to the presence of Kenya’s coastline measuring 640 km long, and most notably, the predictability of this tidal energy. Due to the fact that tidal energy is directly related to the gravitational relationship between the earth and the moon, which is predictable, tidal energy can really help in terms of reduction of pressure and dependence on the hydro power generating seven forks scheme in Kenya. If well synchronized, tidal energy can help alleviate the chronic power rationing that occurs during the dry season in Kenya. By studying work done in other countries, large scale production of electric power from tidal energy can be achieved.

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Hu, Zhen Xing, and Ming Li. "Research on the Power Converter for Tidal Energy Generation." Applied Mechanics and Materials 278-280 (January 2013): 234–38. http://dx.doi.org/10.4028/www.scientific.net/amm.278-280.234.

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As a kind of renewable energy with abundant reserves, safety cleanliness and strongly predictability, tide energy generation technology has become a hot spot in the field of ocean energy development technology. The basic control scheme of the tidal energy generation system is introduced and working process of the three-phase single-switch Boost PFC converter is analyzed in detail. The simulation results show the validation.

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Preziuso, Danielle, Gabriel García-Medina, Rebecca O’Neil, Zhaoqing Yang, and Taiping Wang. "Evaluating the Potential for Tidal Phase Diversity to Produce Smoother Power Profiles." Journal of Marine Science and Engineering 8, no. 4 (April 2, 2020): 246. http://dx.doi.org/10.3390/jmse8040246.

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Although tidal energy conversion technologies are not yet commercially available or cost-competitive with other renewable energy technologies like wind turbines and solar panels, tides are a highly predictable resource. Tidal energy’s predictability indicates that the resource could introduce less volatility into balancing the electric grid when compared to other renewables, a fundamentally desirable attribute for the electric system. More specifically, tidal energy resources are unique in that they have the potential to produce relatively smoother power profiles over time through aggregation. In order to generate smooth power profiles from tidal resources, sufficient complexity within the timing of tides is necessary within electrical proximity. This study evaluates the concept of aggregating diverse tides for the purpose of reducing periods of no and low energy production and creating smoother power profiles in regions around Alaska and Washington by calculating cross-correlations of tidal current velocity time series. Ultimately, study results show limited potential to exploit the resources for this purpose and describe the institutional mechanisms necessary to realize the benefits in practice.

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Wood, Robert J. K., AbuBakr S. Bahaj, Stephen R. Turnock, Ling Wang, and Martin Evans. "Tribological design constraints of marine renewable energy systems." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 368, no. 1929 (October 28, 2010): 4807–27. http://dx.doi.org/10.1098/rsta.2010.0192.

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Against the backdrop of increasing energy demands, the threat of climate change and dwindling fuel reserves, finding reliable, diverse, sustainable/renewable, affordable energy resources has become a priority for many countries. Marine energy conversion systems are at the forefront of providing such a resource. Most marine renewable energy conversion systems require tribological components to convert wind or tidal streams to rotational motion for generating electricity while wave machines typically use oscillating hinge or piston within cylinder geometries to promote reciprocating linear motion. This paper looks at the tribology of three green marine energy systems, offshore wind, tidal and wave machines. Areas covered include lubrication and contamination, bearing and gearbox issues, biofouling, cavitation erosion, tribocorrosion, condition monitoring as well as design trends and loading conditions associated with tribological components. Current research thrusts are highlighted along with areas needing research as well as addressing present-day issues related to the tribology of offshore energy conversion technologies.

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Murali, K., and V. Sundar. "Reassessment of tidal energy potential in India and a decision-making tool for tidal energy technology selection." International Journal of Ocean and Climate Systems 8, no. 2 (June 6, 2017): 85–97. http://dx.doi.org/10.1177/1759313117694629.

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Oceans have significant renewable energy options to provide environmental friendly and clean energy. Technology for ocean energy systems and the feasibility for extraction of the same is an important area on which research is being focused worldwide. This article covers a detailed review of available tidal energy conversion technologies and case studies, with specific focus on tidal power potential in India. The proven option for tidal energy conversion is barraging. Recently, open-type turbine (usually known as tidal stream turbines) has been studied by several researchers and pilot demonstrations have been made. While conventional turbines of 10–20 MW rating are used in barrages, the application of tidal stream turbines of 0.5–2.0 MW has been demonstrated in water depths between 40 and 60 m. A new scale is proposed for categorizing the tidal energy potential in terms of tidal velocity and tidal range which could be used to categorize the potential sites and their ranking. A new systematic approach proposed for the assessment of tidal energy conversion potential can facilitate the suitability of either tidal stream energy or tidal barrage for a location. Within this, one could also decide the site could be developed as a major project or minor project. Therefore, the present work will be useful for engineers and decision makers in technology selection investment potential identification.

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Ahmad, Myisha, G. M. Jahid Hasan, H. M. Mohaymen Billah Chy, and Gazi Masud Md Mahenoor. "Renewable Energy Potentials along the Bay of Bengal due to Tidal Water Level Variation." MATEC Web of Conferences 147 (2018): 05008. http://dx.doi.org/10.1051/matecconf/201814705008.

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The projected increase in energy demand coupled with concerns regarding present reliance on fossil fuel and associated environmental concerns had led to increased interest in exploiting renewable energy sources. Among different renewable energy sources, tidal energy is unique and most suitable because of its predictable nature and capability to ensure supply security. Tide consists of both kinetic and potential energy which can be converted to electricity using well-proven technology. The potential energy of tides - the principal focus of the study, is stored due to rise and fall of the sea level. Head difference created due to tidal variation between basin side and sea side of a barrage stores potential energy which is converted into fast-moving water that rotates turbine and generates electricity. Bangladesh with its long coastline has promising prospects of tidal energy resource development. The study focuses on tidal energy resource exploration and exploitation along several competent locations of the Bengal coastline. Tidal records of flood and ebb tide of these locations are analyzed to calculate the potential energy. Finally, available potential techniques of energy extraction are evaluated for annually generated energy estimation. This study investigates the prospect and utilization of tidal energy concept and reviews the possibilities and opportunities of employment of the technology for sustainable development and climate change mitigation in context of Bangladesh.

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Hazboun, Shawn Olson, and Hilary Schaffer Boudet. "Public Preferences in a Shifting Energy Future: Comparing Public Views of Eight Energy Sources in North America’s Pacific Northwest." Energies 13, no. 8 (April 15, 2020): 1940. http://dx.doi.org/10.3390/en13081940.

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The U.S. and Canada continue to face major changes in energy production. Mounting awareness of the climate crisis has placed increasing importance on developing renewable energy sources, however, advances in fossil fuel extraction technology have opened vast domestic reserves of oil and natural gas. Public preferences for energy policy play a role in determining energy futures, but researchers rarely simultaneously compare public views across multiple renewable and non-renewable energies or across country boundaries. Here, we used a 2019 online survey sample (n = 1500) to compare predictors of support for eight fuel sources for electricity generation in British Columbia, Canada, and Washington and Oregon, USA. Results indicate the highest support overall for renewables (wind, solar, wave/tidal energy, geothermal) and the lowest for fossil fuels (coal and natural gas), nuclear, and hydropower. Mixed-effects regression modeling indicates that views on climate and the balance between environment and economy were consistent predictors of support across most energy types, while political ideology was less consistent. Perceived local importance of both extractive and renewable energy industries were significant predictors of support for some, but not all, energy sources, as were education and gender. Overall, our research suggests that while divisions persist in public energy preferences for both renewable and non-renewable sources, there is the broadest support for renewable energy technologies.

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Cui, Ying, Dayong Xu, Zhenling Liu, and David Ross. "Global Research and Trends in Renewable Energy: Ocean Waves, Tidal Energy and Offshore Wind." Journal of Coastal Research 95, sp1 (May 26, 2020): 1485. http://dx.doi.org/10.2112/si95-286.1.

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Kerr, David. "Marine energy." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 365, no. 1853 (February 2007): 971–92. http://dx.doi.org/10.1098/rsta.2006.1959.

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Marine energy is renewable and carbon free and has the potential to make a significant contribution to energy supplies in the future. In the UK, tidal power barrages and wave energy could make the largest contribution, and tidal stream energy could make a smaller but still a useful contribution. This paper provides an overview of the current status and prospects for electrical generation from marine energy. It concludes that a realistic potential contribution to UK electricity supplies is approximately 80 TWh per year but that many years of development and investment will be required if this potential is to be realized.

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Samo, K. A., I. A. Samo, W. Mughal, A. R. H. Rigit, and A. A. Sohoo. "Suitable Turbine Selection based on the Parameters of a Potential Site at Sarawak, Malaysia." Engineering, Technology & Applied Science Research 10, no. 6 (December 20, 2020): 6399–402. http://dx.doi.org/10.48084/etasr.3770.

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The tidal range is a renewable energy source. In Malaysia, most of the produced renewable energy is generated from the exploitation of the tidal range. The main purpose of this research is to determine a suitable system to produce tidal range energy from a potential site. A turbine selection chart is used. The mean tidal range of Kuching Barrage is 4.2m and the maximum flow rate over a gate is 226.9m3/s. Therefore, for the extraction of electrical power, a bulb-type turbine with a rated power of 5.2MW is identified as suitable to be deployed at the site.

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Xu, Yiyi, Pengfei Liu, Irene Penesis, and Guanghua He. "A panel method for both marine propulsion and renewable energy." Journal of Naval Architecture and Marine Engineering 16, no. 2 (December 19, 2019): 61–76. http://dx.doi.org/10.3329/jname.v16i2.35984.

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A computational hydrodynamics method was formulated and implemented as a tool from screw propeller propulsion to renewable energy performance prediction, design and optimization of horizontal axis turbines. As an example for tidal energy generation, a comparative analysis between screw propellers and horizontal axis turbines was presented, in terms of geometry and motion parameters, inflow velocity analysis and the implementation methodologies. Comparison and analysis are given for a marine propeller model and a horizontal axis turbine model that have experimental measurements available in literature. Analysis and comparison are presented in terms of thrust coefficients, shaft torque/power coefficients, blade surface pressure distributions, and downstream velocity profiles. The effect of number of blades from 2 to 5, of a tidal turbine on hydrodynamic efficiency is also obtained and presented. The key implementation techniques and methodologies are provided in detail for this panel method as a prediction tool for horizontal axis turbines. While the method has been proven to be accurate and robust for many propellers tested in the past, this numerical tool was also validated and presented for both tidal and wind turbines.

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Zhu, Wan Qiang, Bai Gong Wu, Shuang Xin Li, Yong Jun Dong, and Jing Fu Guo. "Design and Study on Ocean Energy with the Horizontal Axis Tidal Current Turbine's Blade Especially for China's Low Tidal Current Velocity." Advanced Materials Research 908 (March 2014): 465–68. http://dx.doi.org/10.4028/www.scientific.net/amr.908.465.

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Tidal current energy of sea surface is a kind of renewable energy with wide prospect of development. Because of its relatively high utilization ratio, the horizontal-axis turbine generation system utilizing tidal current energy has become the focus of technology development of tidal current energy all over the world. In this paper, the authors analyze the characteristics of surface tidal current energy along the coast of China. Meanwhile, we use BEM mathematical model to design the 2.5kW Horizontal Axis Tidal Current Energy Turbine Generator Blade, which is suitable for the features of tidal current energy in our country. The result of the prototypes dragging experiment indicates that this design method has good application value.

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Isaksson, Natalie, Ian R. Cleasby, Ellie Owen, Benjamin J. Williamson, Jonathan D. R. Houghton, Jared Wilson, and Elizabeth A. Masden. "The Use of Animal-Borne Biologging and Telemetry Data to Quantify Spatial Overlap of Wildlife with Marine Renewables." Journal of Marine Science and Engineering 9, no. 3 (March 2, 2021): 263. http://dx.doi.org/10.3390/jmse9030263.

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The growth of the marine renewable energy sector requires the potential effects on marine wildlife to be considered carefully. For this purpose, utilization distributions derived from animal-borne biologging and telemetry data provide accurate information on individual space use. The degree of spatial overlap between potentially vulnerable wildlife such as seabirds and development areas can subsequently be quantified and incorporated into impact assessments and siting decisions. While rich in information, processing and analyses of animal-borne tracking data are often not trivial. There is therefore a need for straightforward and reproducible workflows for this technique to be useful to marine renewables stakeholders. The aim of this study was to develop an analysis workflow to extract utilization distributions from animal-borne biologging and telemetry data explicitly for use in assessment of animal spatial overlap with marine renewable energy development areas. We applied the method to European shags (Phalacrocorax aristotelis) in relation to tidal stream turbines. While shag occurrence in the tidal development area was high (99.4%), there was no overlap (0.14%) with the smaller tidal lease sites within the development area. The method can be applied to any animal-borne bio-tracking datasets and is relevant to stakeholders aiming to quantify environmental effects of marine renewables.

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Hwang, Su-jin, and Chul H. Jo. "Tidal Current Energy Resource Distribution in Korea." Energies 12, no. 22 (November 18, 2019): 4380. http://dx.doi.org/10.3390/en12224380.

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Korea is a very well-known country for having abundant tidal current energy resources. There are many attractive coastal areas for the tidal current power that have very strong currents due to the high tidal range and the acceleration through the narrow channels between islands in the west and south coasts of the Korean peninsula. Recently, the Korean government announced a plan that aims to increase the portion of electricity generated from renewable energy to 20% by 2030. Korea has abundant tidal current energy resources; however, as reliable resource assessment results of tidal current energy are not sufficient, the portion of tidal current power is very small in the plan. Therefore, a reliable resource assessment should be conducted in order to provide a basis for the development plan. This paper describes the resource assessment of tidal current energy in Korea based on the observational data provided by KHOA (Korean Hydrographic and Oceanographic Agency) and numerical simulation of water circulation. As the observational data were unable to present the detailed distribution of the complicated tidal current between islands, numerical simulation of water circulation was used to describe the detailed distribution of tidal current in Incheon-Gyeonggi and Jeollanam-do, where the tidal energy potentials are abundant. The west and south coastal areas of Korea were divided into seven regions according to the administrative district, and the theoretical tidal current potential was calculated using average power intercepted. The results of this research can provide the insight of the tidal current energy development plan in Korea.

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강신원. "New Renewable Energy Policies and Its Economic Efficiency - Based on Tidal Power -." 과학기술법연구 19, no. 2 (June 2013): 259–82. http://dx.doi.org/10.32430/ilst.2013.19.2.259.

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Jones, Anthony T., and Will Rowley. "Global Perspective: Economic Forecast for Renewable Ocean Energy Technologies." Marine Technology Society Journal 36, no. 4 (December 1, 2002): 85–90. http://dx.doi.org/10.4031/002533202787908608.

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Renewable energy sources from the oceans include offshore wind, wave energy, and underwater currents. Sustainable future economies require renewable energy sources. Recent developments in ocean-based renewable energy systems are outlined and forecasts for the next decade are put forth. Offshore wind energy is the fastest growing sector in renewable energy. Anticipated to reach $6 billion per year in Europe by 2006, upwards of 86 MW of capacity from 88 turbines are in place today. Capacity by 2010 is projected to grow to at least 2000 MW. Governmental support in Europe is fueling the development, in part, because of greenhouse gas emission targets. The first commercial-scale wave power facility was established in Scotland. Several proponents plan prototype demonstrations over the next few years. Growth in this sector is anticipated to reach $100 million per annum by 2010. Projects harnessing tidal currents have shifted toward capturing tidal-driven coastal currents. Conservative estimates of $40 million per annum by 2010 appear realistic. Ocean-based renewable energy development lag land-based systems because of significant capital requirements and difficulty obtaining the necessary financing due to risk and market barriers. The technical capabilities, both in engineering and management, exist in the offshore sector to undertake the size and scope of projects envisioned.

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Neill, Simon P., M. Reza Hashemi, and Matt J. Lewis. "The role of tidal asymmetry in characterizing the tidal energy resource of Orkney." Renewable Energy 68 (August 2014): 337–50. http://dx.doi.org/10.1016/j.renene.2014.01.052.

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Caine, Catherine Ann. "The Race to the Water for Offshore Renewable Energy: Assessing Cumulative and In-combination Impacts for Offshore Renewable Energy Developments." Journal of Environmental Law 32, no. 1 (December 3, 2019): 83–109. http://dx.doi.org/10.1093/jel/eqz031.

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Abstract Wind, wave and tidal energy are widely regarded as being the ‘good guys’ in energy production for their carbon neutral qualities. However, lurking in the shadow of this good reputation is the uncertainty about the impacts that this new technology will have on the marine environment. It could cause a potential conflict between carbon-neutral energy production and the protection of habitats, and the prevention of biodiversity loss. This article presents empirical data collected from three case studies in England and Scotland. This research indicates that the disjointed nature of the consenting processes for offshore renewables does not encourage full assessment of the cumulative impacts of offshore renewable developments as required by European Union environmental impact assessment legislation. The article identifies elements of the consenting processes, which fail to provide a full assessment of cumulative and in-combination impacts, and recommends changes to these processes in England and Scotland.

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Khojasteh, Danial, Davood Khojasteh, Reza Kamali, Asfaw Beyene, and Gregorio Iglesias. "Assessment of renewable energy resources in Iran; with a focus on wave and tidal energy." Renewable and Sustainable Energy Reviews 81 (January 2018): 2992–3005. http://dx.doi.org/10.1016/j.rser.2017.06.110.

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Bryden, Ian G., and Scott J. Couch. "ME1—marine energy extraction: tidal resource analysis." Renewable Energy 31, no. 2 (February 2006): 133–39. http://dx.doi.org/10.1016/j.renene.2005.08.012.

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Kaufmann, Nicholas, Thomas Carolus, and Ralf Starzmann. "Turbines for modular tidal current energy converters." Renewable Energy 142 (November 2019): 451–60. http://dx.doi.org/10.1016/j.renene.2019.04.120.

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Boretti, Alberto. "Trends in tidal power development." E3S Web of Conferences 173 (2020): 01003. http://dx.doi.org/10.1051/e3sconf/202017301003.

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Tidal energy has been around for almost 2, 000 years, as the first Tide Mills date the Romans times. Tidal power generation then emerged in the 1960s, with the construction of the 240 MW La Rance power station, a still working example of good renewable energy initiative, permitting electricity production at very competitive costs since now more than 54 years. Unfortunately, apart from the construction in 2011 of a similar plant based on the tidal range technology, the 254 MW Sihwa Lake power station, almost nothing else happened in the real world for tidal energy, apart from very small or demonstration plants. While the future is certainly towards tidal streams/currents technologies rather than tidal range technologies, as tidal currents turbines may also be used for oceanic currents installations, these technologies are still in their infancy, as apart from their theoretical performance, every other aspect of a submerged power plant operation needs further developments.

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Segura, Eva, Rafael Morales, and José A. Somolinos. "Influence of Automated Maneuvers on the Economic Feasibility of Tidal Energy Farms." Sustainability 11, no. 21 (October 26, 2019): 5965. http://dx.doi.org/10.3390/su11215965.

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The vertiginous increase in the global demand for energy, together with the imbalance between the period during when fossil resources were formed and the rhythm of their consumption, makes it necessary to promote renewable energies in order for energy consumption to coexist with sustainable development. One of the most important challenges as regards renewable energy generation is to be able to move to a new low carbon economy in which energy demands can be met while the levels of CO 2 emitted are reduced. In this respect, most of the energy obtained from marine currents, the most predictable renewable energy source, is located at great depths. In order to take advantage of this energy, different types of technologies are currently being developed whose economic viability necessitates a reduction in costs. The development of automated systems that will allow the orientation and depth of tidal energy converters to change automatically in order to reduce maintenance maneuvers and take advantage of the energy resource in an optimal manner is, therefore, essential. This paper analyzes the economic feasibility of the automation of installation and maintenance maneuvers on tidal energy farms by means of the levelized cost of energy (LCOE) and costs. These aspects have been analyzed in the case of the Alderney Race (United Kingdom). The results obtained show that the use of marine current harnessing devices with automated maneuvers has a relatively important economic advantage over those devices designed with the technology that requires manual maneuvers for the installation and operation procedures, thus enabling the cost of energy to be reduced and increasing the profitability of the project.

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Samo, K. A., I. A. Samo, Z. A. Siyal, and A. R. H. Rigit. "Determination of Potential Tidal Power Sites at East Malaysia." Engineering, Technology & Applied Science Research 10, no. 4 (August 16, 2020): 6047–51. http://dx.doi.org/10.48084/etasr.3674.

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Tidal range energy is one of the most predictable and reliable sources of renewable energy. This study’s main aim is to determine potential sites for tidal range power in East Malaysia, by analyzing tidal range distributions and resources and the feasibility of constructing barrages. Investigation was conducted in 34 sites, estimating their potential energy outputs and studying their areas for constructing barrages. Only 18 sites were marked as appropriate for constructing a tidal range energy extraction barrage. The highest potential power was found in Tanjung Manis, and its maximum capacity was calculated as 50.7kW. The second highest potential of tidal power extraction was found in Kuching Barrage at Pending, where an energy harvester could produce electric power up to 33.1kW.

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McCormick, Michael E., and R. Cengiz Ertekin. "Renewable Sea Power." Mechanical Engineering 131, no. 05 (May 1, 2009): 36–39. http://dx.doi.org/10.1115/1.2009-may-4.

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This article discusses various aspects of research funding that seeks to use waves, tides, and thermal in different useful ways. The Department of Energy (DOE) program is set to explore technology that aims to harness some of the ocean’s energy and put it to work. It also presents a conception of a field of water mills designed by Marine Current turbines that turn the currents of tides into electricity. The researchers believe that the tidal energy resource is both reliable and predictable. With the escalating costs of oil and natural gas, it will become a viable resource soon. The DOE’s new program in marine renewable energies is an attempt to tap into a vast resource. Electrical utilities and private companies have made early commitments to participate in the centers. While conducting their own research, the universities will assist in the establishment of ocean field-testing sites and help the DOE keep a recently created marine renewable energy data base up to date.

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Klaus, Stocker. "Financial and Economic Assessment of Tidal Stream Energy—A Case Study." International Journal of Financial Studies 8, no. 3 (August 4, 2020): 48. http://dx.doi.org/10.3390/ijfs8030048.

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This case study is based on actual project and consultancy work, balancing real life experience with a review and analysis of empirical and theoretical literature. Tidal stream energy (TSE) is still a nascent technology, but with much better predictability than the classical alternatives of sun and wind. Being still more expensive than other renewable technologies, it is important to find locations in order to initiate a learning process to bring down cost to a competitive level as it was the case for solar and wind technologies. Locations for an initial phase of operation of TSE small islands in the Philippines (and other Asian countries) were found to be most suitable, because expensive and polluting diesel generators can be replaced and a reliable 24 h electricity supply can be established. Different appraisal methods in different scenarios show that under normal circumstances a hybrid combination of TSE, solar energy and battery storage is financially and economically superior to existing fossil energy based power stations as well as to solar energy alone. However, the traditional financial approaches are not always reliable, in spite of superficial mathematical exactness, and the parameters used must be analysed carefully, especially if we deal with innovative technologies with fast changes. In times of global warming we must also include the controversial issue of evaluating damages from greenhouse gases if choosing fossil alternatives. When evaluating and planning renewable technologies, engineering know-how is important, but insufficient. Since financing is a crucial issue for most renewable technologies with high front loaded cost and long amortisation periods, a thorough and trustworthy financial and economic analysis is necessary not only to avoid financial failure later on, but also to attract stakeholders like private investors, banks and government institutions to support a still unknown technology.

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Uddin, Riaz, Hashim Raza Khan, Asad Arfeen, Muhammad Ayaz Shirazi, Athar Rashid, and Umar Shahbaz Khan. "Energy Storage for Energy Security and Reliability through Renewable Energy Technologies: A New Paradigm for Energy Policies in Turkey and Pakistan." Sustainability 13, no. 5 (March 5, 2021): 2823. http://dx.doi.org/10.3390/su13052823.

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Forecasting the microeconomics of electricity will turn into a challenging process when electricity is produced through renewable energy technologies (RET). These technologies are mainly sunlight-based photovoltaic (PV), wind power, and tidal resources, which vigorously rely upon ecological conditions. For a reliable and livable energy supply to the electricity grid from renewable means, electrical energy storage technologies can play an important role while considering the weather effects in order to provide immaculate, safe, and continuous energy throughout the generation period. Energy storage technologies (ESTs) charge themselves during the low power demand period and discharge when the demand of electricity increases in such a way that they act as a catalyst to provide energy boost to the power grid. In this paper, we presented and discussed the renewable ESTs for each type with respect to their operational mechanism. In this regard, the renewable energy scenarios of Pakistan and Turkey are first discussed in detail by analyzing the actual potential of each renewable energy resource in both the countries. Then, policy for the EST utilization for both the countries is recommended in order to secure sustainable and reliable energy provision.

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Baskutis, Saulius, Jolanta Baskutiene, Valentinas Navickas, Yuriy Bilan, and Wojciech Cieśliński. "Perspectives and Problems of Using Renewable Energy Sources and Implementation of Local “Green” Initiatives: A Regional Assessment." Energies 14, no. 18 (September 17, 2021): 5888. http://dx.doi.org/10.3390/en14185888.

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Environmental pollution, energy supply and security of supply have become major issues across the world due to climate change, limited energy sources, energy price volatility and energy supply constraints. Energy availability, energy efficiency and the replacement of fossil fuels by renewable energy sources are key factors in the global development of sustainable energy. In many countries with limited fossil fuel resources, the sustainable development of renewable energy sources is an important tool in reducing dependence on imported fuels. Some alternative energy sources, such as wind, solar, tidal and hydropower, seem almost inexhaustible. With the exception of tidal energy, all of these sources have been used extensively and for a long time. This article examines the improvement of energy security and the government’s actions to promote the use of renewable energy sources, focusing on increasing energy efficiency and reducing energy intensity and dependence on energy imports in Lithuania. In addition, the article provides the state of renewable energy sources in Lithuania, aspects of sustainability and future development directions and perspectives.

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Ko, Chung, Lee, Park, and Yi. "Current Policy and Technology for Tidal Current Energy in Korea." Energies 12, no. 9 (May 12, 2019): 1807. http://dx.doi.org/10.3390/en12091807.

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As global energy consumption continues to increase, the negative impact of global warming also grows. Therefore, eco-friendly energy policy is being established all over the world. Korea’s energy consumption problems are further complicated by the country’s high dependence on energy sourced overseas. Korean energy policy is evolving rapidly to address these problems. Korea has begun to phase out nuclear power and is focusing on developing new sources of renewable energy. So there has been substantial interest in the development of ocean energy. Of all ocean energy technologies, tidal current energy is the closest to the commercialization. Especially, the southwestern coast of Korea is the most promising candidate site for the development of tidal current energy owing to the abundant tidal current energy resource. Meanwhile, ocean energy policy is an important factor in determining the development of ocean energy. Thus, this paper presents the overview of the current status of policy and technology for the tidal current energy system in Korea. These policies explained in this paper can provide significant interest and motivation for the use of tidal current energy resources.

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Cossu, Remo, Irene Penesis, Jean-Roch Nader, Philip Marsh, Larissa Perez, Camille Couzi, Alistair Grinham, and Peter Osman. "Tidal energy site characterisation in a large tidal channel in Banks Strait, Tasmania, Australia." Renewable Energy 177 (November 2021): 859–70. http://dx.doi.org/10.1016/j.renene.2021.05.111.

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Dong, Yongjun, Wanqiang Zhu, Xueming Zhang, and Jingfu Guo. "Design of Special Plastic Bearings and Their Application in Renewable Energy Conversion System." Open Materials Science Journal 9, no. 1 (November 4, 2015): 203–9. http://dx.doi.org/10.2174/1874088x01509010203.

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To improve the operational reliability of renewable energy conversion system, high-performance polymers and engineering plastics are used to make some parts and components of the energy conversion device, especially in the marine renewable energy generation field. In this article, special plastic bearings based on the material of polyoxymethylene (POM) were designed and applied in the power generation device of both tidal current energy and island wind energy. The properties of POM were analyzed, and the load of a POM ball was tested. Special structures of the plastic bearings were designed to meet the requirements of pressure resistance and to reduce the friction. These plastic bearings had been used in the prototypes of 20 kW tidal current turbine generation device and 15 kW island wind turbine generation device. According to the prototypes’ operation, the results indicate that these plastic bearings work well and are very suitable for the application in renewable energy conversion system. By optimizing the structure, such plastic bearings would be generalized and applied in the renewable energy generation device with a higher power level.

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Nagy, Orsolya. "Renewable energy resources in the EU (Policy scenario)." Acta Agraria Debreceniensis, no. 51 (February 10, 2013): 143–46. http://dx.doi.org/10.34101/actaagrar/51/2079.

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The use of renewable energies has a long past, even though its share of the total energy use is rather low in European terms. However, the tendencies are definitely favourable which is further strengthened by the dedication of the European Union to sustainable development and combat against climate change. The European Union is on the right track in achieving its goal which is to be able to cover 20% its energy need from renewable energy resources by 2020. The increased use of wind, solar, water, tidal, geothermal and biomass energy will reduce the energy import dependence of the European Union and it will stimulate innovation.

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Shyu, Lih Shyng. "Renewable Energy Evaluation and Plan in Matsu Areas." Advanced Materials Research 962-965 (June 2014): 1858–61. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.1858.

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This project evaluates, gathers statistics, and investigates current situations of renewable energy (including wind power, solar power, and ocean energy) in Matsu areas for environment sustainable use. The areas have abundant wind power potential, and the average wind speeds over 4m/s fittable for wind power system. Matsu areas have abundant solar energy (yearly average Solar Radiation >3,600 MJ/m2) suitable for the development of solar water heaters and solar power. For the ocean energy a swamp in Nangan forms a tidal reservoir can be applied with yearly generation time about 4,000 hours, then the estimated yearly electric power is 64k kW-hour.

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Journal articles on the topic 'Tidal renewable energy'

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