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- Goldschmidt et al.
A marine hydrokinetic (MHK) cycloturbine is a renewable electric power generation system used in rivers or tidal environments to address the need for electricity in remote regions. MHK cycloturbines have hydrofoils oriented perpendicular to the flow in a paddlewheel configuration, and use lift generated from these foils to produce power. Due to the high cost associated with its operation and…
- Cronin et al.
Ocean Renewable Power Company, Inc. (ORPC) recently completed an EU Horizon 2020 funded project to develop and test a “wet-gap” generator for use with their tidal and river energy converters. This wet-gap system is designed for a normal operating condition of a seawater flooded electrical generator which would typically be air or oil filled. This development removes the need for insulating oil…
- Cornett et al.
The potential for dangerous interactions with floating debris is a leading consideration when evaluating potential sites for deployment of hydrokinetic power systems, yet to date, relatively little research effort has been directed towards developing and proving effective devices and systems for protecting turbines from floating debris.
This paper presents and discusses results from a…
- Fouz et al.
Hydrokinetic energy can contribute to diversify and decarbonise the energy mix in many coastal regions, in particular estuaries. These are typically areas of high environmental value and with intense socioeconomic activity. The aim of this work is to provide a comprehensive methodology for selecting the optimum locations for hydrokinetic energy exploitation, by considering all the relevant…
- 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…
- 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…
- Ridgill et al.
Free-flowing rivers have been impacted by anthropogenic activity and extensive hydropower development. Despite this, many opportunities exist for context-specific energy extraction, at locations deemed undesirable for conventional hydropower plants, in ways that reduce the scale of operation and impact. Hydrokinetic energy conversion is a renewable energy technology that requires accurate…
- Duvoy et al.
We introduce a methodology for a comprehensive characterization of river flows from transects surveyed at different times over near coincident transects from acoustic Doppler current profiler (ADCP) data acquired from a moving vessel.
The ADCP measurements are first rotated from East and North velocities into primary and secondary flows that are projected onto a grid of points on an…
- 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.…
- YoosefDoost and Lubitz
The Archimedes/Archimedean screw generator (ASG) is a fish-friendly hydropower technology that could operate under a wide range of flow heads and flow rates and generate power from almost any flow, even wastewater. The simplicity and low maintenance requirements and costs make ASGs suitable even for remote or developing areas. However, there are no general and easy-to-use guidelines for…
- 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…
- Cruz et al.
For being densely populated and urbanized, and for concentrating high-value economic activities, estuarine regions have an increased energy demand, which boosts the claim for new, efficient, renewable, and safe energy production. Among these technologies, hydrokinetic energy conversion systems are potentially well-suited for estuaries. However, in the actual context of climate change, it is…
- Browning et al.
The marine energy (ME) industry historically lacked a standardized data processing toolkit for common tasks such as data ingestion, quality control, and visualization. The marine and hydrokinetic toolkit (MHKiT) solved this issue by providing a public software deployment (open-source and free) toolkit for the ME industry to store and maintain commonly used functionality for wave, tidal, and…
- Kirby et al.
Hydrokinetic energy resource assessment is a crucial prerequisite for strategic turbine deployment and energy extraction. Despite advancements in analytical tools, resource assessment is often completed without detailed investigation of spatial and temporal flow variation and implications on optimal turbine placement. A case study was conducted on the Rivière Rouge, Québec, Canada to estimate…
- Kirby et al.
Methods of estimating riverine hydrokinetic (HK) power for localized and regional studies are reviewed, evaluated, and compared. It was found that localized HK studies were not entirely consistent, with the most common discrepancies being discharge variability characterization, uncertainty analysis, and the amount of data used to derive the results. The issues associated with localized…
- Jacobson et al.
This report describes the methodology and results of the most rigorous assessment to date of the riverine hydrokinetic energy resource in the contiguous 48 states and Alaska, excluding tidal waters. The assessment provides estimates of the gross, naturally available resource, termed the theoretical resource, as well as estimates, termed the technically recoverable resource, that account for…
- Saini et al.
With the exploitation of most of the conventional hydropower sites, novel and innovative technologies are being developed to harness the hydropower. In this era, hydrokinetic technologies have emerged as the promising solutions to tap the vast hydrokinetic energy available in riverine system. Various studies on the hydrokinetic technology are being carried out. The main issue regarding the…
- Lust et al.
Testing of a 1:6 scale model of an H-Darrieus cross-flowhydrokineticturbine (U.S. Department of Energy’s Reference Model 2 River Current Turbine) was conducted in the largetowing tankfacility at the United States Naval Academy. Tests were conducted in current only conditions at a range of diameter-basedReynolds numbersand at several turbine depths. Reynolds number independence was observed at…
- Pandit et al.
A microbial reverse-electrodialysis (MREC) cell uses the exchange of ions between two solutions with varying salinities to produce electricity. It functions by using microorganisms to generate an ion flow that powers an electrical current through an ion-selective membrane. The low voltage generated by the MFC, for example, can be improved by the reverse electrodialysis (RED) stack due to the…
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