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- Kumar and Saini
Energy crisis and high emission of fossil fuels are major driving forces for developing renewable energy based technologies. In order to meet growing demand for energy, hydropower can be one of the sustainable alternatives. Further, thehydrokineticturbineis considered as one of the most emerging technologies which harness energy from flowing water. In this paper, an attempt has been made to…
- Loeffler et al.
The BladeRunner Energy hydrokinetic turbine A kw-scale prototype of the BladeRunner system was tested at the Tanana River Test Site in Nenana, AK in the fall of 2021 and the summer of 2022. The BladeRunner hydrokinetic turbine uses a flexible torsional cable to connect a submerged trailing rotor to a floating generator housing that is supported by a single mooring line. The BladeRunner design…
- Shamsuddin et al.
Savoniusturbinesare practical for rivers with low speeds due to their simple design and good self-starting capabilities. Despite these advantages, real implementation is still limited due to their low power efficiency. However, the experimental studies are scarce as they mainly focus on power performance, neglecting the impact of materials exposed to the wind or water medium. Therefore, the…
- Shashikumar and Madav
In the present paper, three-dimensional numerical simulations were carried out to examine the influence of the overlap ratio between the two straight edges on the advancing and returning blades of the novel V-shapedrotor bladeprofiles using thesliding meshtechnique. The performance parameters were computed with respect to the tip speed ratio. The findings show that the coefficient of torque…
- Küppers et al.
The supply of energy is sustainable only if it is predominantly based on renewable or regenerative energies. For this reason, the use of micro-hydropower plants on rivers and streams is considered recently. This is a particular challenge for the preservation of ecologically permeable streams, so that no dams or similar structures can be considered. While the axial turbine design has prevailed…
- Puertas-Frias et al.
ocial and political concerns on climate change have made renewable energy an essential component of government’s work plans. Grid-connected horizontal-axishydrokineticturbinesare promising eco-friendly power sources for electrical energy supply to households near middle-to-high discharge rivers, while providing an opportunity to sell the energy surplus. In this work, a rotor design analysis of…
- Takamure et al.
The volume penalization vortex-in-cell (VP-VIC) method, which combines the vortex-in-cell and vortex penalization methods, is a kind of immersed boundary method that has the advantage of accurately calculating the vorticity field near the boundary. It is expected to be used as a design tool for shape optimization. In this study, the flow and performance of a small Savonius turbine rotor (rotor…
- Abutunis et al.
Coaxial horizontal axis hydrokinetic turbine system: Numerical modeling and performance optimization
Hydrokinetic turbines extract energy from free-flowing water, such as river streams and marine currents. For river applications, the typical deployment location is highly space-constrained due to both the nature of the river (i.e., its natural width and depth) and the other usages of the river. Therefore, a modified design of a conversion device is desired to accommodate these space…
- Giannini et al.
The worldwide river and tidal hydrokinetic power potential is considerable. Harnessing such potential could allow the generation of a significant amount of sustainable electricity for local uses. To the present, most studies on hydrokinetic power have focused on large-scale commercial technology development, large tidal farms planning, and high-intensity resources assessment. Reduced attention…
- Browning et al.
Many remote communities in Alaska have significant hydrokinetic resources. However, the remote locations make collecting large amounts of resource data challenging and costly. Through accurately up sampling hourly ADCP data, we are seeking ways to faithfully reproduce annual energy estimates for velocity time series with high enough temporal resolution to be useful for grid-modeling tools.…
- Loeffler and Arango
Since 2010, the Tanana River Test Site in Nenana AK has performed real worlds testing of a variety of MHK devices. BladeRunner Energy has completed 5 testing campaigns, totaling 65 hours of instrumented operations on site. Test site performs fish-impact studies and can operate with our without debris diverter. This poster presentation was presented at the PAMEC conference of 2024 in…
- Wang et al.
Hydrokineticpoweras acleanrenewableenergy has been aroused awidespread concern. Horizontal axis turbines are widely used in the field of tidal and river current energy power generation, but their internal flow loss characteristics have not been fully revealed. In this paper, a micro horizontal axis river ducted turbine is taken as the research object, and the flow loss characteristics of the…
- Badawy et al.
River current energy is regarded as one of the most environmentally friendly sources of electricity. Because it doesn't produce power by holding water in a reservoir and causing a height differential, a river current (or hydrokinetic) device is not a dam. Turbines placed inside rivers immediately harvest the kinetic energy of flowing water. Like Egypt's river Nile can be used to…
- Awandu et al.
Energy accessibility, reliability and availability are key components of improved quality of life and human development in all spheres. As the United Nations’ SDG 7 calls for access to electricity for all by 2030, Africa still has a wide gap to fill as the statistics show that 85% of the population that will not have access to electricity is in Africa. As the world tries to wean itself off non…
- Niebuhr et al.
Hydrokinetic turbine deployment in inland water reticulation systems such as irrigation canals has potential for future renewable energy development. Although research and development analysing the hydrodynamic effects of these turbines in tidal applications has been carried out, inland canal system applications with spatial constraints leading to possible blockage and backwater effects…
- Arevalo et al.
The power fluctuations produced by electric vehicles represent a drawback in large-scale residential applications. In addition to that, short power peaks could pose a risk to the stability of the electrical grid. For this reason, this study presents a feasibility analysis for a residential system composed of electric vehicle chargers. The objective is focused on smoothing the power…
- Nushagak Electric & Telephone Cooperative
Nushagak Electric & Telephone Cooperative, Inc. (Cooperative) is filing with the Federal Energy Regulatory Commission (FERC or Commission) an updated Proposed Study Plan (PSP) describing the studies proposed for the Nuyakuk River Hydroelectric Project (Project), FERC No. 14873, in accordance with 18 CFR §5.11. The Cooperative is seeking an original license for the proposed Project and…
- Agbakwuru and Arome
A novel vertical axis underwater current power dual turbine that extracts power from flowing water bodies of low velocities (0.5 m/s or less) is presented. It has now a further innovation of a dual turbine and hybrid system that provides a solar panel roof over the underwater current power turbine (UCPT) platform to enable the system to extract power from both solar and underwater current. The…
- Tsuanyo et al.
Hydropower plants are among the most efficient and reliable renewable energy systems in the world as far as electricity production is concerned. Run-of-river hydropower plants seem more attractive than conventional hydroelectric plants since they can be a cheaper and environmentally friendly alternative. However, their expected energy production pattern heavily depends on several construction…
- Kirke
Despite a lot of optimism about the potential ofhydrokineticturbines in rivers, the reality is that very few are currently deployed in rivers, delivering power to those who need it. Barriers to their widespread deployment include, above all, the cost per kW actually delivered in rivers which rarely flow at more than about 1 m/s, far short of the 3 m/s at which rated power is typically quoted.…
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