Safe passage for fish: The case for in-stream turbines

Brown, Esther M.; Sulaeman, Samer; Quispe-Abad, Raul; Müller, Norbert; Moran, Emílio F.

doi:10.1016/j.rser.2022.113034

Cited by 9 publications

(5 citation statements)

References 47 publications

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“…These innovations aim to mitigate the ecological impacts associated with dam construction and operation. Studies emphasize the development of instream turbines, which exhibit fish-friendly operation over a wide range of riverine velocities and have shown to be environmentally, ecologically, and socially beneficial, especially for off-grid communities [124]. Despite the implementation of fish protection barriers and bypasses, research indicates that a significant proportion of fish (35%-88%) still pass through turbines, highlighting the necessity for well-performing, less selective bypass systems and less harmful turbine technologies [125].…”

Section: Advancements In Hydroelectric Power Generationmentioning

confidence: 99%

Green Energy Technologies: A Key Driver in Carbon Emission Reduction

Wenten,

Khoiruddin,

Siagian

2024

J. Eng. Technol. Sci.

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This paper explores the vital role of green energy technologies in mitigating carbon emissions and advancing sustainable energy transition. It emphasizes the significance of green energy in reducing the carbon footprint, delves into the environmental consequences of carbon emissions, and analyzes the mechanisms through which green energy contributes to carbon reduction. This paper discusses technological advancements across various renewable energy sources, including solar, wind, hydroelectric, biomass, geothermal, tidal, wave, nuclear, osmotic, and salinity-powered energy generation. It also examines emerging green energy technologies, identifies barriers to adoption, offers an Indonesian perspective, and provides recommendations for a greener energy future. Overall, this paper offers a comprehensive exploration of green energy's transformative potential in combatting climate change and promoting sustainable development.

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Section: Advancements In Hydroelectric Power Generationmentioning

confidence: 99%

Green Energy Technologies: A Key Driver in Carbon Emission Reduction

Wenten,

Khoiruddin,

Siagian

2024

J. Eng. Technol. Sci.

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“…heavily on the flow kinetic energy of the incoming water. A version of this concept, seen in Figure 12h, was recently proposed [125], which resembles a hub-less axial turbine. This concept was found to satisfy pressure drop and strain rate criteria [125], conforming to requirements for safe fish passage [74].…”

Section: Fish-friendly Hydropower Design Conceptsmentioning

confidence: 99%

“…A version of this concept, seen in Figure 12h, was recently proposed [125], which resembles a hub-less axial turbine. This concept was found to satisfy pressure drop and strain rate criteria [125], conforming to requirements for safe fish passage [74]. However, the authors of the work identify that the design is an extremely low head turbine and has a low efficiency (in fact calculated to be much lower than the Betz limit).…”

Section: Fish-friendly Hydropower Design Conceptsmentioning

confidence: 99%

“…Entirely alternative to reservoir-based, or diversion-based hydropower discussed so far, are in-stream turbines, which can be placed directly in the water stream, thus relying heavily on the flow kinetic energy of the incoming water. A version of this concept, seen in Figure 12h, was recently proposed [125], which resembles a hub-less axial turbine. This concept was found to satisfy pressure drop and strain rate criteria [125], conforming to requirements for safe fish passage [74].…”

Section: Fish-friendly Hydropower Design Conceptsmentioning

confidence: 99%

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State of the Art in Designing Fish-Friendly Turbines: Concepts and Performance Indicators

Koukouvinis

Anagnostopoulos

2023

Energies

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The expanding role of renewable energy sources in the electricity market share implies the increasing role of hydropower and the exploitation of unharnessed hydraulic potential, in the scope of sustainability and net zero emissions. Hydro-turbine design practices are expected to expand beyond achieving high efficiency goals, to multi-objective criteria ranging from efficient reversible operation to fish-friendly concepts. The present review paper outlines fundamental characteristics of hydropower, summarizing its potential impact toward aquatic life. Estimates of lethality for each damage mechanism are discussed, such as barotrauma, blunt impact and shearing, along with relevant advances in experimental techniques. Furthermore, numerical techniques are discussed, ranging from simple particle tracking to fully coupled six-degree-of-freedom tracking, which can be used to investigate candidate designs and their fish-friendly performance, presenting their advantages and disadvantages. Subsequently, a link to the individual damage mechanisms is established, to proposed holistic performance metrics, useful for providing estimates of fish-friendliness of a given hydropower installation. Finally, recent developments and design practices for fish-friendly turbine concepts are presented.

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“…For tidal stream energy technologies, the risk of collisions between marine animals (particularly marine mammals, diving sea 2 of 17 birds, fish, and sea turtles) and the moving parts of devices (e.g., turbine blades and rotors, or dynamic technologies like tidal kites or oscillating blades; [15,16]) are generally unknown, but are considered to be the greatest potential risk of turbine operations [12]. As such, collision risk (i.e., the likelihood that animals might be harmed by coming into contact with the moving parts of MRE devices [17]) has been the subject of much research (reviewed in [16]), including modelling exercises (e.g., [18][19][20]), experiments conducted under controlled laboratory conditions (e.g., [21][22][23]), and in situ studies around various operational turbine technologies (e.g., [24][25][26]). Collectively, this body of knowledge provides substantive evidence to suggest that when marine animals can detect operational tidal turbines, they can exhibit avoidance or evasion behaviors [17,27] and take measures to prevent being struck by turbine blades [28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

A Probabilistic Methodology for Determining Collision Risk of Marine Animals with Tidal Energy Turbines

Copping,

Hasselman,

Bangley

et al. 2023

JMSE

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Commercial development of tidal stream energy is hampered by technical and financial challenges, and impeded by uncertainty about potential environmental effects that drive environmental risk assessments and permitting (consenting) processes. The effect of greatest concern for operational tidal stream energy devices is the potential for marine animals to collide with turbine blades, resulting in injury or death. Due to the turbulent and often turbid waters that frequently characterize tidal turbine sites, there is an absence of empirical evidence about collisions with marine animals. This paucity of observations often leads to risk-averse permitting decisions that further restrict the deployment of tidal energy devices that are needed to collect this evidence. This paper relies on the framework of stressors and receptors that is widely used in marine energy studies and outlines a stepwise probabilistic methodology that applies existing knowledge to further elucidate the risk to marine animals from operational tidal turbines. A case study using striped bass from the Bay of Fundy, Canada, accompanies the methodology, to partially demonstrate its application.

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Safe passage for fish: The case for in-stream turbines

Cited by 9 publications

References 47 publications

Green Energy Technologies: A Key Driver in Carbon Emission Reduction

Green Energy Technologies: A Key Driver in Carbon Emission Reduction

State of the Art in Designing Fish-Friendly Turbines: Concepts and Performance Indicators

A Probabilistic Methodology for Determining Collision Risk of Marine Animals with Tidal Energy Turbines

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