Academic literature on the topic 'Hydro-kinetic energy'
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Journal articles on the topic "Hydro-kinetic energy"
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Kapooria, Raj Kumar. "An efficiency assessment analysis of a modified gravitational Pelton-wheel turbine." Journal of Energy in Southern Africa 20, no. 4 (November 1, 2009): 19–29. http://dx.doi.org/10.17159/2413-3051/2009/v20i4a3308.
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A Pelton-wheel impulse turbine is a hydro mechanical energy conversion device which converts gravitational energy of elevated water into mechanical work. This mechanical work is converted into electrical energy by means of running an electrical generator. The kinetic energy of the Water-jet is directed tangentially at the buckets of a Pelton-wheel. The Water-jet strikes on each bucket’s convex profile splitter and get split into two halves. Each half is turned backwards, almost through 180° relative to the bucket on a horizontal plane. Practically this angle may vary between 165° to 170°. Normally all the jet energy is used in propelling the rim of the bucket wheel. Invariably some jet water misses the bucket and passes onto the tail race without doing any useful work. This hydro device is a good source of hydro-electrical energy conversion for a high water head. The present work in this research paper deals with some advanced modifications in the conventional Pelton-wheel so that it can be used for low-head and heavy-discharge applications. Both kinetic and potential energy of the water source is consumed by the runner wheel. Considerable gravitational effect of the water jet is exploited by means of some modifications in a conventional Pelton-wheel. A comparatively heavy generator can be run by this modified Pelton-wheel turbine under low-head and heavy-discharge conditions. The modified features provide enough promising opportunities to use this turbine for Mini and Micro hydro power plants.
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Narendran, K., K. Murali, and V. Sundar. "Investigations into efficiency of vortex induced vibration hydro-kinetic energy device." Energy 109 (August 2016): 224–35. http://dx.doi.org/10.1016/j.energy.2016.04.110.
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Gorlov, Alexander M. "Helical Turbines for the Gulf Stream: Conceptual Approach to Design of a Large-Scale Floating Power Farm." Marine Technology and SNAME News 35, no. 03 (July 1, 1998): 175–82. http://dx.doi.org/10.5957/mt1.1998.35.3.175.
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This paper describes the helical turbine as an efficient new instrument for converting the kinetic energy of hydro streams into electric or other mechanical energy. A multi-megawatt project is proposed, conceived as an ocean power farm equipped with a number of helical turbines, along with a floating factory for in situ production of hydrogen fuel by means of electrolyzing ocean waters. Besides mega hydro-power farms, mini-power stations with helical turbines of a few kilowatts each are also proposed as possibilities for small communities or even individual households located near tidal shorelines or river banks with strong water currents. No construction of hydro dams is necessary for such applications.
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D. Obozov, Alaybek, Ruslan A. Akparaliyev, Taalaybek T. Mederov, and Victor G. Krasnov. "Bi-rotor micro hydro power plant for energy supply to isolated consumers." International Journal of Engineering & Technology 7, no. 2.13 (April 15, 2018): 173. http://dx.doi.org/10.14419/ijet.v7i2.13.11682.
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This paper is dedicated to comparative analysis and description of a micro hydroelectric power plant with bi-rotor hydro generator. Based on the characteristics analysis, this paper describes a renewable energy source for a small watercourse; the feasibility of micro hydroelectric power plants with bi-rotor hydro generator is demonstrated. The features of their operation require in-depth research to substantiate parameters of such installations. This paper presents the analysis of the usage of micro hydroelectric solutions with bi-rotor hydro generator. The lattice theory problem was solved, which made it possible to determine the shape of the profile according to a given law of velocity distribution (pressure) on the contour. The experimental stand was developed, and the experiments were conducted to identify the dependence of the frequency of rotation from the flow and the dependence of the rotational frequencies of hydro turbines from various loads. Based on the results obtained, the optimum values of the rotational speed were identified. Presented results of experimental research are of significance and can be applied practically in design of micro hydroelectric power plants with bi-rotor hydro generator. Keywords: Bi-Rotor Hydro Generator; Differential Equation; Rotational Flows; Function; Hydraulic Models; Kinetic Energy; Renewable Energy Sources; Velocity Measurements. This paper is dedicated to comparative analysis and description of a micro hydroelectric power plant with bi-rotor hydro generator. Based on the characteristics analysis, this paper describes a renewable energy source for a small watercourse; the feasibility of micro hydroelectric power plants with bi-rotor hydro generator is demonstrated. The features of their operation require in-depth research to substantiate parameters of such installations. This paper presents the analysis of the usage of micro hydroelectric solutions with bi-rotor hydro generator. The lattice theory problem was solved, which made it possible to determine the shape of the profile according to a given law of velocity distribution (pressure) on the contour. The experimental stand was developed, and the experiments were conducted to identify the dependence of the frequency of rotation from the flow and the dependence of the rotational frequencies of hydro turbines from various loads. Based on the results obtained, the optimum values of the rotational speed were identified. Presented results of experimental research are of significance and can be applied practically in design of micro hydroelectric power plants with bi-rotor hydro generator.
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Ridzuan, Mohd Jamir Mohd, S. M. Hafis, K. Azduwin, K. M. Firdaus, and Zawawi Zarina. "Development of Pico-Hydro Turbine for Domestic Use." Applied Mechanics and Materials 695 (November 2014): 408–12. http://dx.doi.org/10.4028/www.scientific.net/amm.695.408.
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As many research and study were conducted worldwide in order to explore the different alternatives and renewable energy resources, this work come out with the descriptions of the initial testing conducted on the prototype of pico-hydro generation system for the purpose of investigating its performance. The kinetic energy hold by water flow in the domestic pipes was obtained to have potential in generating electricity power for energy storage purposes while conducting routine activities such as laundry, cook and bathe. The water pressure and water flow inside the pipe from utility’s main tank that used for those usual activities are used to rotate small scale hydro turbine to drive a generator for electrical power generation. Results from the test significantly show the convinced reading in recorded voltage as it is a count to propose the system is feasible for electrification of energy storage purpose and indicate the prospect for further improvement and future research.
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Miller, Gabriel, Dean Corren, Peter Armstrong, and Joseph Franceschi. "A study of an axial-flow turbine for kinetic hydro power generation." Energy 12, no. 2 (February 1987): 155–62. http://dx.doi.org/10.1016/0360-5442(87)90120-4.
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Ghosh, Prasenjeet, Arthur T. Andrews, Richard J. Quann, and Thomas R. Halbert. "Detailed Kinetic Model for the Hydro-desulfurization of FCC Naphtha." Energy & Fuels 23, no. 12 (December 17, 2009): 5743–59. http://dx.doi.org/10.1021/ef900632v.
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Derakhshandeh, J. F., M. Arjomandi, B. S. Cazzolato, and B. Dally. "Harnessing hydro-kinetic energy from wake-induced vibration using virtual mass spring damper system." Ocean Engineering 108 (November 2015): 115–28. http://dx.doi.org/10.1016/j.oceaneng.2015.08.003.
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Lalander, Emilia, Mårten Grabbe, and Mats Leijon. "On the velocity distribution for hydro-kinetic energy conversion from tidal currents and rivers." Journal of Renewable and Sustainable Energy 5, no. 2 (March 2013): 023115. http://dx.doi.org/10.1063/1.4795398.
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Tahir, Muti Ur Rehman, Adil Amin, Ateeq Ahmed Baig, Sajjad Manzoor, Anwar ul Haq, Muhammad Awais Asgha, and Wahab Ali Gulzar Khawaja. "Design and optimization of grid Integrated hybrid on-site energy generation system for rural area in AJK-Pakistan using HOMER software." AIMS Energy 9, no. 6 (2021): 1113–35. http://dx.doi.org/10.3934/energy.2021051.
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<abstract> <p>Power sector plays a crucial role in the development of a country. Rise in population and industrial expansion in developing countries are reason to burdenize the central grid. Pakistan is a country in its developing stages. About 58% of its total energy generation is contributed by fossil fuel based conventional plants for which the fuel costs plenteous amount. In these circumstances it is indispensable to exploit naturally available renewable resources for electricity generation. This study proposes a hybrid hydro-kinetic/Photovoltaic/Biomass system integrated with grid to serve electricity in a residential area of district Kotli in AJK Pakistan. By evaluating available resources and total load demand data of residential consumers, a system design is modelled in HOMER to get techno-economic and optimal design analysis of the purposed system. Using several configurations and combinations of available energy generation systems and then by comparing their results, the most optimum system design is achieved in terms of initial cost, operating cost, cost per unit and net present cost of the system. To further refine the results, the effect of variations of different parameters like load demand, water flow speed and solar irradiance on system is investigated by performing sensitivity analysis on the system. Final results demonstrate that the purposed system is cost-effective and efficient to meet the load demand.</p> </abstract>
Dissertations / Theses on the topic "Hydro-kinetic energy"
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Yuen, Katarina. "System Perspectives on Hydro-Kinetic Energy Conversion." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-181555.
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Free-flowing water currents such as tides and unregulated water courses could contribute to world electricity production given the emergence of robust technical solutions for extracting the energy. At Uppsala University, a concept for converting the energy in water currents to electricity using a vertical axis turbine with fixed blade-pitch and a direct-drive permanent magnet generator is studied. Technological equipment for extracting energy from water currents can be studied at desktop to some extent, but physical realizations, first in a laboratory setting, and later in a natural aquatic setting, are necessary. For this reason, a laboratory generator has been constructed and evaluated, and an experimental setup comprising turbine, generator and control system has been constructed. The turbine and generator are to be deployed in the Dalälven River in Söderfors, and operated from an on-land control station. The author has worked with constructing and evaluating the low-speed laboratory generator, participated in the design and construction of the Söderfors generator, and designed and constructed the control system for Söderfors. The generator design incorporates a low rotational speed, permanent magnets, and many poles, in order to adapt the generator to the nature of water currents. Simulations and experimental data for the laboratory prototype have been compared and show that the simulation tool used is adequate for design studies of this type of generator. The generator has also been shown to be able to operate with the intended turbine design and range of water velocities. The control system to be used in Söderfors has been tested in a laboratory environment. Simulations of the control system show that it should be able to operate the turbine and generator at the desired rotational speeds in water velocities up to about 1.8 m/s. Simulations of the system have also shown that maximizing system power output may not correspond with maximizing turbine power.
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Grabbe, Mårten. "Hydro-Kinetic Energy Conversion : Resource and Technology." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-195942.
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The kinetic energy present in tidal currents and other water courses has long been appreciated as a vast resource of renewable energy. The work presented in this doctoral thesis is devoted to both the characteristics of the hydro-kinetic resource and the technology for energy conversion. An assessment of the tidal energy resource in Norwegian waters has been carried out based on available data in pilot books. More than 100 sites have been identified as interesting with a total estimated theoretical resource—i.e. the kinetic energy in the undisturbed flow—in the range of 17 TWh. A second study was performed to analyse the velocity distributions presented by tidal currents, regulated rivers and unregulated rivers. The focus is on the possible degree of utilization (or capacity factor), the fraction of converted energy and the ratio of maximum to rated velocity, all of which are believed to be important characteristics of the resource affecting the economic viability of a hydro-kinetic energy converter. The concept for hydro-kinetic energy conversion studied in this thesis comprises a vertical axis turbine coupled to a directly driven permanent magnet generator. One such cable wound laboratory generator has been constructed and an experimental setup for deployment in the river Dalälven has been finalized as part of this thesis work. It has been shown, through simulations and experiments, that the generator design at hand can meet the system requirements in the expected range of operation. Experience from winding the prototype generators suggests that improvements of the stator slot geometry can be implemented and, according to simulations, decrease the stator weight by 11% and decrease the load angle by 17%. The decrease in load angle opens the possibility to reduce the amount of permanent magnetic material in the design.
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Lalander, Emilia, Mårten Grabbe, and Mats Leijon. "On the velocity distribution for hydro-kinetic energy conversion from tidal currents and rivers." Uppsala universitet, Elektricitetslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-195499.
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Tidal currents and rivers are promising sources of renewable energy given that suitable turbines for kinetic energy conversion are developed. To be economically and technically feasible, a velocity distribution that can give a high degree of utilization (or capacity factor), while the ratio of maximum to rated velocity is low would be preferable. The rated velocity is defined as the velocity at which rated power is achieved. Despite many attempts to estimate the resource, however, reports on the possible degree of utilisation from tidal currents and rivers are scarce. In this paper the velocity distribution from a number of regulated rivers, unregulated rivers and tidal currents have been analysed regarding the degree of utilisation, the fraction of converted energy and the ratio of maximum to rated velocity. Two methods have been used for choosing the rated velocity; one aiming at a high fraction of converted energy and one aiming at a high degree of utilisation. Using the first method, with a rated velocity close to the maximum velocity, it is unlikely that the turbine will reach the cut-out velocity. This results in, on average, a degree of utilisation of 23% for regulated rivers, 19% for unregulated rivers and 17% for tidal currents while converting roughly 30-40% of the kinetic energy. Choosing a rated velocity closer to the mean velocity resulted in, on average, a degree of utilisation of 57% for regulated rivers, 52% for unregulated rivers and 45% for tidal currents. The ratio of maximum to rated velocity would still be no higher than 2.0 for regulated rivers, 1.2 for unregulated rivers and 1.6 for tidal currents. This implies that the velocity distribution of both rivers and tidal currents is promising for kinetic energy conversion. These results, however, do not include weather related effects or extreme velocities such as the 50-year velocity. A velocity factor is introduced to describe what degree of utilisation can be expected at a site. The velocity factor is defined as the ratio U-max/U-rate at the desired degree of utilisation, and serves as an early indicator of the suitability of a site.
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Bomminayuni, Sandeep Kumar. "Modelling tidal flow for assessment of hydro-kinetic energy and bathing water quality in coastal waters." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/70060/.
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In this study, a hydro-environmental numerical model is utilised to further demonstrate the applicability of computer models to predict tidal flow in coastal waters. In particular, high resolution model simulations are performed at two selected sites: the Ogeechee Estuary, USA to assess the hydro-kinetic energy potential near Rose Dhu Island, a small island in the estuary; and at Swansea Bay, UK to assess faecal coliform pollution levels in the bay. Model results from the Ogeechee Estuary simulations revealed that better representation of branching smaller creeks located inshore enhanced the magnitude of tidal currents by approximately 30% near Rose Dhu Island. Evaluation of spatial and temporal distribution of currents revealed that local hot-spots of hydro-kinetic energy exist within the estuary and a maximum annual power of 4.75MW is available from the tidal streams surrounding the island. Investigation of the sensitivity of model parameters related to intertidal storage and bottom friction showed that ebb tide dominance in the estuary is reduced by lowering wetland elevation and by increasing bottom friction in the channel. Increasing the marsh friction to represent the resistance offered by marsh vegetation decreased the influence of intertidal storage on tidal distortion as ebb-dominance is reduced. Model results from the Swansea Bay simulations showed that three distinct flow patterns exist in the bay including re-circulating eddy like patterns, due to the presence of a headland located towards to the south-west end of the bay. The model-predicted distribution of Faecal Indicator Organisms (FIO) helped identify major pollution sources that negatively influence the rating of the Swansea Bay bathing water site. Investigation of the spatial distribution of FIO concentrations at the Designated Sampling Point (DSP) revealed that that the samples collected at DSP for compliance monitoring would correctly represent the pollution levels in the surrounding areas, however, at locations further off-shore significant spatial variability by up to five times was observed. As expected, intermittent peaks in FIO concentrations were noticeable following rainfall events, however, a strong temporal variability within a day was also observed at the DSP with concentration values varying by up to ten times in magnitude.
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Paquier, Anne-Éléonore. "Interactions de la dynamique hydro-sédimentaire avec les herbiers de phanérogames, Étang de Berre." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM3064/document.
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Au début du 20ème siècle, l'étang de Berre était occupée par de larges prairies sous-marines de Zostera qui ont fortement réduit sous l'impact des pollutions et arrivées massives d'eau douce par le canal EDF. Pollutions et arrivées d'eaux ont beaucoup réduit mais les herbiers ne s'étendent pas vers le large. Cette thèse a donc pour but d'analyser les interactions entre les herbiers sous-marins de l'étang de Berre basé sur l'hypothèse que la dynamique hydro-sédimentaire peut jouer un rôle dans le maintien des herbiers à l'état relique. Dans cette lagune, le vent conditionne l'hydrodynamisme en générant des vagues de vent et des courants.L'atténuation des vagues par l'herbier est en lien avec la hauteur des vagues (dépendant de la vitesse du vent, la longueur de fetch et des effets de réfraction lié à la morphologie de la anse) et est modulée par la biométrie de l'herbier, le niveau d'eau ou la présence de courants. Alors qu'au dessus de l'herbier, les courants sont rapides et fortement influencés par le vent et les vagues de vent, une couche de transition eau-canopée permet la dissipation de l'énergie des vagues et des courants. Dans la canopée, les courants sont très atténués grâce à la présence de l'herbier. L'herbier apparaît comme un élément important de la dynamique sédimentaire car il peut, par sa simple présence, réduire l'hydrodynamisme et modifier l'évolution du fond dans et en arrière de l'herbier et protéger la plage. Le niveau de récurrence de vents forts semble contrôler les évolutions sédimentaires.Les fortes interactions de l'herbier avec la dynamique hydro-sédimentaire laissent penser qu'elle pourrait limiter leur extension dans des zones plus exposéesBerre lagoon was occupied by extensive meadows at the turn of the 20th century which regressed down under the impact of urban and industrial pollution and inflow of the EDF canal. Even though freshwater inputs and pollutions were drastically reduced respectively in the 1980s and 1990s, meadows have not significantly gained ground. This thesis aims at analysing the interactions between seagrass meadows of Berre lagoon, hydrodynamics and sedimentary processes, based on the postulate that these mechanisms are important in the maintenance of the meadows in their present dispersed form. In the lagoon, winds constitute the dominant influence on hydrodynamics in the lagoon by generating wind waves and currents. Wave attenuation is linked to wave height, which is, in turn, dependent on wind intensity and fetch length and modified by the bay morphology. Wave attenuation is also modulated by meadow biometry, and by water levels and currents.Whereas currents are strong and strongly influenced by wind and wind waves above the meadow, a transition canopy-water layer dissipates waves and currents. In the canopy, currents are thus attenuated.The meadow is not just a passive element in the overall sediment dynamics since it reduces energy and thus modifies substrate changes within and in the back of the meadow, thus protecting the shoreline. However, it is the recurrence of strong wind that seems to drive sedimentary changes. The strong interactions between the meadow and the hydrodynamic and sedimentary processes could limit the extension of the meadow in areas more exposed to waves
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Manickam, Sureshkumar Eshodarar. "Harnessing Hydro-kinetic Energy from Wake-Induced Vibration (WIV) of Bluff bodies." Thesis, 2018. http://hdl.handle.net/2440/117805.
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In this dissertation, the application Wake-Induced Vibration (WIV) of a bluff body for harnessing the kinetic energy of a fluid flow is presented. WIV arises when a body undergoes vibrations in the wake of an upstream body. This project investigates the WIV of a bluff body (circular cylinder), constrained to vibrate in the transverse direction, operating in the wake produced by a stationary and upstream bluff body. The upstream body serves as an energy concentrator and increases the oscillations experienced by the downstream body. An efficient coupling of the spatially and temporally concentrated energy from the upstream body and the downstream and vibrating body will result in WIV being considered as a viable form of renewable energy. The application of induced vibration due to vortices in harnessing hydrokinetic energy of the fluid is relatively immature and this research work, which is written as a compilation of journal articles, attempts to address major scientific and technological gaps in this field. The wake behind a bluff body augments the hydro-kinetic energy in space as well as time, in the form of a vortex street. Firstly, the kinetic energy distribution of a bluff body (circular cylinder) wake is characterized using numerical modelling, in order to identify the form and density of the available energy. Secondly, the spatial and temporal energy in the wake from different bluff bodies is investigated experimentally to identify a flow energy concentrator that is more suitable for WIV than the circular cylinder. The semicircular, straight-edged triangular, convex-edged triangular and trapezoidal cylinders were chosen for this analysis where the semicircular and convex-edged triangular cylinders were found to augment more temporal energy compared to the circular cylinder. Thirdly, experiments were performed in the water channel to investigate the effects of Reynolds number and separation gaps for the different cross-sections of upstream cylinders. The results indicated that an upstream semicircular cylinder produces more efficient WIV in a downstream circular cylinder compared to an upstream circular cylinder. In addition, both numerical and experimental results indicated that a staggered arrangement with 3 ≤ 𝑥/D ≤ 4 and 1 ≤ 𝑦/D ≤ 2 (here, D is the diameter of the cylinder, and x and y are the horizontal and vertical offsets, respectively) is the optimum arrangement among all test cases to harness the energy of vortices, resulting in a power coefficient of 33%. This was achieved due to the favourable phase lag between the velocity of the cylinder and force imposed by the fluid. Finally, the effect of mass and damping ratio of the downstream cylinder is investigated to optimize the vibration efficiency of the staggered semicircular-circular cylinder WIV system. The results of this test showed that a lower damping ratio results in lower impedance of the system and hence a larger vibration response. The vibration response was also inversely proportional to the mass ratio, however, a mass ratio of 2 – 3 proved to be the most efficient for the WIV system resulting in a maximum efficiency of 49%.Thesis (Ph.D.) -- University of Adelaide, School of Mechanical Engineering, 2018
Book chapters on the topic "Hydro-kinetic energy"
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Kreitmair, Monika Johanna. "Uncertain Power from a Hydro-Kinetic Turbine in Steady Flow." In The Effect of Uncertainty on Tidal Stream Energy Resource Estimates, 27–59. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-57658-5_3.
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McElroy, Michael B. "Hydro: Power From Running Water." In Energy and Climate. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780190490331.003.0016.
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As discussed in Chapter 4 and illustrated in Figure 4.1, close to 50% of the solar energy intercepted by the Earth is absorbed at the surface. Approximately half of this energy, 78 W m– 2, is used to evaporate water, mainly from the ocean. What this means is that evaporation of water accounts for as much as a third of the total solar energy absorbed by the Earth (atmosphere plus surface). The atmosphere has a limited ability to retain this water. Evaporation is balanced in close to real time by precipitation. A portion of this precipitation reaches the surface in regions elevated with respect to sea level— in mountainous locations, for example. It is endowed in this case with what we refer to as potential energy (Chapter 4). This potential energy can be stored (in lakes or dams, for instance), or it can be released, converted to kinetic energy (directed motion) as the water flows downhill on its return to the ocean. And along the way, energy can be captured and channeled to perform useful work. An early application involved exploiting the power of running water to turn a flat stone, one of two that constituted the apparatus used to grind grain, the other remaining stationary during the grinding process. The Domesday Book records that by AD 1086 as many as 5,624 water mills were operational in England south of the River Trent, deployed not just to grind grain but for a multitude of other tasks, including, but not confined to, sawing wood, crushing ore, and pumping the bellows of industrial furnaces (Derry and Williams 1960). Later, running water would provide the motive force for the textile industry that marked the beginning of the industrial age in North America, specifically in New England (Steinberg 1991; McElroy 2010). The most important contemporary application of water power involves the generation of electricity, the bulk of which is obtained by tapping the potential energy stored in high- altitude dams, a lesser fraction from the kinetic energy supplied by free- flowing streams (what is referred to as run- of- the- river sources).
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Mamulashvili, George. "Hydro Power Tower (HYPOT)." In Hydropower [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.100107.
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Humanity has used the power of falling water for centuries to produce electrical energy, but there have been no significant changes in technology. Marine Energy has received an explosive development. Traditional technologies are passive and have low efficiency. It is not possible to use the effect of falling water in the ocean. The chapter considers the technology, which allows to convert not only the kinetic energy of a moving horizontal flow, but also the potential energy of water hammer in a combination of pressure drop between layers of water that have different hydrodynamic characteristics. This is a high efficiency due to the use of the Pitot-Prandtl tube principle and Bernoulli’s law and in combination with the effect of raising the water of the hydraulic ram. The calculations are based on computational fluid dynamics (CFD) methods. It is known that 94% of incoming solar energy is converted into underwater currents and only 6% - on the surface. Therefore, the proposed technology can be highly competitive in relation for example to Orbital Marine Power (OMP) project and another known offshore wind and wave power plants which convert only the kinetic energy of the surface air and sea currents.
Conference papers on the topic "Hydro-kinetic energy"
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James, Scott C., Sophia Lefantzi, Janet Barco, Erick Johnson, and Jesse D. Roberts. "Verifying marine-hydro-kinetic energy generation simulations using SNL-EFDC." In OCEANS 2011. IEEE, 2011. http://dx.doi.org/10.23919/oceans.2011.6106918.
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Yakub, Usama, Sha Md Nayeem, Sk Md GolamMostafa, and NahidulHoque Samrat. "An investigation on hydro kinetic energy and analyzing its potentiality in Bangladesh." In 2014 2nd International Conference on Green Energy and Technology (ICGET). IEEE, 2014. http://dx.doi.org/10.1109/icget.2014.6966659.
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Lobo, Varun, Nyuykighan Mainsah, Arindam Banerjee, and Jonathan W. Kimball. "Design Feasibility of a Vortex Induced Vibration Based Hydro-Kinetic Energy Harvesting System." In 2011 IEEE Green Technologies Conference (IEEE-Green). IEEE, 2011. http://dx.doi.org/10.1109/green.2011.5754879.
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Masud, Ibrahim Abubakar, and Yoshihide Suwa. "Viability of Hydro-kinetic Turbine as an Alternative for Renewable Energy Harvesting In Nigeria." In 2018 12th South East Asian Technical University Consortium (SEATUC). IEEE, 2018. http://dx.doi.org/10.1109/seatuc.2018.8788852.
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Mutsuda, Hidemi, Kenta Kawakami, Takayuki Kurokawa, Yasuaki Doi, and Yoshikazu Tanaka. "A Technology of Electrical Energy Generated From Ocean Power Using Flexible Piezoelectric Device." In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20103.
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We have developed a way of harvesting electrical energy from the ocean power, e.g. tide, current, wave, breaking wave and vortex, using a flexible piezoelectric device consisting of piezo-electric polymer film (PVDF), silicon and natural rubber. The flexible piezoelectric device (FPED) is a hydro-electric ocean energy converter designed to convert renewable energy harnessed from ocean energy into usable electricity. The basic concept generating electric power using FPED is to utilize fluid structure interaction, e.g. flattering, flapping and periodic bending, caused by ocean energy. The FPED deformed by kinetic energy of the ocean power stores elastic energy and also converts it to the electric energy. We carried out some experiments using wave tank and the water tunnel with a bluff body. We have confirmed the electricity generated by wave, current and vortex using the FPED. The developed FPED could be a new technology of harvesting electrical energy from the ocean power. A floating platform attached FPED could be coupled with an offshore wind turbine as a hybrid energy system in ocean space.
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Gilloteaux, Jean-Christophe, and Aurélien Babarit. "Preliminary Design of a Wind Driven Vessel Dedicated to Hydrogen Production." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61408.
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An innovative concept of harnessing wind energy is presented. The concept consists of a wind driven ship equipped with a hydro-generator that converts the kinetic energy of the water flow into electricity. The electricity is then converted into hydrogen by electrolysis. In the present study the use of a Flettner rotor is considered to propel the ship. A mathematical model of the hydrogen producing ship is developed based on existing data for high performance ship hulls and aerodynamic coefficients of existing Flettner rotors. The design is optimized with respect to the axial induction velocity through the water turbine disk. Results indicate that a 22m long vessel could produce 200 kW while a 80 m long vessel is able to generate 1 MW of mechanical power both for a true wind speed of 8 m/s.
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Bayandor, Javid. "The Next Generation Feedback Controlled Propulsive System." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31257.
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A short synopsis pertaining to the concept, analysis and development of the new advanced zero head HYdro-Propulsive System (HYPS) has been drawn. Within this system, of particular importance are the implemented revolutionary feedback control systems. These systems provide the HYPS with a unique ability to efficiently receive and capture the kinetic energy embedded in multi-directional, random and turbulent fluid flow motions. The system is equipped with specially designed bladings (propulsors) that are attached through the feedback controllers to the extending radial arms, allowing the blades to adjust their orientations according to the oncoming flow. It has been demonstrated, through implicit analysis and extensive tests, that this system can effectively maximise the favourable aero-hydrodynamic forces on its impellers and, in turn, achieve a much higher energy conversion rate compare to those of the conventional devices.
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Jiang, Boxi, Mohammad Reza Amini, Yingqian Liao, Joaquim R. R. A. Martins, and Jing Sun. "Control Co-Design of a Hydrokinetic Turbine With Open-Loop Optimal Control." In ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-81006.
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Abstract This paper introduces a control co-design (CCD) framework to simultaneously explore the physical parameters and control spaces for a hydro-kinetic turbine (HKT) rotor optimization. The optimization formulation incorporates a coupled dynamic-hydrodynamic model to maximize the rotor power efficiency for various time-variant flow profiles. The open-loop optimal control is applied for maximum power tracking, and the blade element momentum theory (BEMT) is used to model the hydrodynamics. Case studies with different control constraints are investigated for CCD. Sensitivity analyses were conducted with respect to different flow profiles and initial geometries. Comparisons are made between CCD and the sequential process, with physical design followed by a control design process under the same conditions. The results demonstrate the benefits of CCD and reveal that, with control constraints, CCD leads to increased energy production compared to the design obtained from the sequential design process.
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Ramakrishnan, R., Somashekhar S. Hiremath, and M. Singaperumal. "Open Loop Dynamic Performance of Series Hydraulic Hybrid System With Hydrostatic Regenerative Braking." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-07033.
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As gas prices rise and the green movement grows, more fluid power companies are working to develop hydraulic drive trains for large trucks to passenger cars and wind turbines. The hydraulic drive system is more effective and efficient than traditional hybrid systems because there is less energy lost between the engine and the wheels. Specially designed for stop-and-go vehicles, the system captures energy as the vehicle brakes. When the vehicle is restarted, the series hydraulic hybrid system puts the vehicle in motion. When the captured energy is depleted, then the engine kicks in. Here, the accumulator in the system is used to recover the kinetic energy without reversion of fluid flow. Variable displacement pump/motor unit is utilized for both driving and hydro-static regeneration mode. This paper gives an insight on dynamic simulation results obtained using LMS Amesim tool. The effect of various system parameters like pre-charge pressure and hydraulic pump/motor-pump maximum displacement on system output power is discussed. Varying pre-charge pressure of the accumulator shows significant improvement in the system output power. Maximizing the system output power indirectly leads to less fuel consumption and pollution reduction in hybrid vehicles.
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Li, Ningyu, Hongrae Park, Hai Sun, and Michael M. Bernitsas. "Numerical Simulation and Experiments of Flow-Induced Oscillations of Single-Cylinder With Large Passive Turbulence Control." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-19142.
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Abstract Passive turbulence control (PTC) is being used in the Marine Renewable Energy Laboratory (MRELab) of the University of Michigan to enhance flow induced oscillations (FIO) of cylinders in the VIVACE (Vortex Induced Vibration for Aquatic Clean Energy) Converter. Large PTC triggers VIV and galloping at lower flow speeds for energy harvesting. Currently, FIO of cylinders with large PTC for high Re has received limited attention and, particularly, the effect of variable PTC height on FIO of cylinders. The vast majority of ocean currents, rivers, and tides are too slow for Marine Hydro Kinetic (MHK) energy technologies to harness it. In order to enhance FIO and to initiate galloping earlier, a circular cylinder is geometrically modified using straight strips placed on the cylinder surface symmetrically PTC strips on the cylinder effectively change the flow properties. In the present study, the FIO of a single-cylinder with large PTC, on end linear-springs, is modelled and simulated using a Fluid-Structure Interaction (FSI) code. Results are verified by corresponding experimental data. Results show that VIV onset occurs at lower Re for large-PTC cylinder in comparison with lower-PTC cylinder. Contrary to smooth cylinders for which the amplitude ratio is small in the transition region between VIV and galloping, application of large PTC leads to high amplitude response in the transition region. The mechanism behind this observation is the further departure of the geometry from the smooth circular cylinder. The latter does not exhibit galloping due to flow and geometric symmetry in all directions. Moreover, in the galloping region, the amplitude ratio increases with the height of PTC. Earlier onset of galloping and enhancement of geometric asymmetry support this observation as well.