Session C8: Development of Criteria for the Design and Dimensioning of Fish-Friendly Intakes for Small Hydropower Plant
Abstract: To conciliate the hydroelectric production and the restoration and protection plans of migratory species, in particular salmon (Salmo salar), sea trout (Salmo trutta) and eel (Anguilla anguilla), and more generally the longitudinal continuity for fish species, it is necessary to avoid or a...
Main Authors: | , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
ScholarWorks@UMass Amherst
2015
|
Subjects: | |
Online Access: | https://scholarworks.umass.edu/fishpassage_conference/2015/June24/16 https://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1942&context=fishpassage_conference |
id |
ftunivmassamh:oai:scholarworks.umass.edu:fishpassage_conference-1942 |
---|---|
record_format |
openpolar |
spelling |
ftunivmassamh:oai:scholarworks.umass.edu:fishpassage_conference-1942 2023-05-15T13:28:06+02:00 Session C8: Development of Criteria for the Design and Dimensioning of Fish-Friendly Intakes for Small Hydropower Plant Courret, Dominique Larinier, Michel David, Laurent Chatellier, Ludovic 2015-06-24T21:30:00Z application/pdf https://scholarworks.umass.edu/fishpassage_conference/2015/June24/16 https://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1942&context=fishpassage_conference unknown ScholarWorks@UMass Amherst https://scholarworks.umass.edu/fishpassage_conference/2015/June24/16 https://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1942&context=fishpassage_conference International Conference on Engineering and Ecohydrology for Fish Passage Aquaculture and Fisheries Hydraulic Engineering text 2015 ftunivmassamh 2022-01-09T19:28:37Z Abstract: To conciliate the hydroelectric production and the restoration and protection plans of migratory species, in particular salmon (Salmo salar), sea trout (Salmo trutta) and eel (Anguilla anguilla), and more generally the longitudinal continuity for fish species, it is necessary to avoid or at least reduce damages to fish passing through turbines. The best way to reduce fish mortality would be to install fish-friendly turbines, but it is not a cost-effective solution on existing installations and in the present state of the art their use is very limited in terms of head and discharge ranges. Transforming conventional intakes into socalled “fish-friendly” ones is therefore considered as one of the most acceptable solutions. We present here the development of criteria for the design and dimensioning of fishfriendly intakes for small hydropower plants in France (up to ≈ 100 m3/s until now). These criteria were established from the feedback following the evaluation of existing downstream bypasses in France and abroad, and from hydraulic studies on downscale models. Fish-friendly intakes comprise a trashrack designed to guide fish towards its downstream end and to the entrances of bypasses, through which fish safely reach the tailwater. Criteria concern (1) the clear space between bars to avoid the passage of fish through the trashrack and via turbines, (2) the inclination or angulation of the rack to guide fish towards the bypasses located at its downstream end, (3) the normal velocity through the rack to avoid fish impingement, and (4) the number, positions, dimensions, and discharge of bypasses to collect the fish. New formulae have also been proposed to evaluate head-losses for inclined or angled trashracks with low bar-spacing. Text Anguilla anguilla Salmo salar University of Massachusetts: ScholarWorks@UMass Amherst |
institution |
Open Polar |
collection |
University of Massachusetts: ScholarWorks@UMass Amherst |
op_collection_id |
ftunivmassamh |
language |
unknown |
topic |
Aquaculture and Fisheries Hydraulic Engineering |
spellingShingle |
Aquaculture and Fisheries Hydraulic Engineering Courret, Dominique Larinier, Michel David, Laurent Chatellier, Ludovic Session C8: Development of Criteria for the Design and Dimensioning of Fish-Friendly Intakes for Small Hydropower Plant |
topic_facet |
Aquaculture and Fisheries Hydraulic Engineering |
description |
Abstract: To conciliate the hydroelectric production and the restoration and protection plans of migratory species, in particular salmon (Salmo salar), sea trout (Salmo trutta) and eel (Anguilla anguilla), and more generally the longitudinal continuity for fish species, it is necessary to avoid or at least reduce damages to fish passing through turbines. The best way to reduce fish mortality would be to install fish-friendly turbines, but it is not a cost-effective solution on existing installations and in the present state of the art their use is very limited in terms of head and discharge ranges. Transforming conventional intakes into socalled “fish-friendly” ones is therefore considered as one of the most acceptable solutions. We present here the development of criteria for the design and dimensioning of fishfriendly intakes for small hydropower plants in France (up to ≈ 100 m3/s until now). These criteria were established from the feedback following the evaluation of existing downstream bypasses in France and abroad, and from hydraulic studies on downscale models. Fish-friendly intakes comprise a trashrack designed to guide fish towards its downstream end and to the entrances of bypasses, through which fish safely reach the tailwater. Criteria concern (1) the clear space between bars to avoid the passage of fish through the trashrack and via turbines, (2) the inclination or angulation of the rack to guide fish towards the bypasses located at its downstream end, (3) the normal velocity through the rack to avoid fish impingement, and (4) the number, positions, dimensions, and discharge of bypasses to collect the fish. New formulae have also been proposed to evaluate head-losses for inclined or angled trashracks with low bar-spacing. |
format |
Text |
author |
Courret, Dominique Larinier, Michel David, Laurent Chatellier, Ludovic |
author_facet |
Courret, Dominique Larinier, Michel David, Laurent Chatellier, Ludovic |
author_sort |
Courret, Dominique |
title |
Session C8: Development of Criteria for the Design and Dimensioning of Fish-Friendly Intakes for Small Hydropower Plant |
title_short |
Session C8: Development of Criteria for the Design and Dimensioning of Fish-Friendly Intakes for Small Hydropower Plant |
title_full |
Session C8: Development of Criteria for the Design and Dimensioning of Fish-Friendly Intakes for Small Hydropower Plant |
title_fullStr |
Session C8: Development of Criteria for the Design and Dimensioning of Fish-Friendly Intakes for Small Hydropower Plant |
title_full_unstemmed |
Session C8: Development of Criteria for the Design and Dimensioning of Fish-Friendly Intakes for Small Hydropower Plant |
title_sort |
session c8: development of criteria for the design and dimensioning of fish-friendly intakes for small hydropower plant |
publisher |
ScholarWorks@UMass Amherst |
publishDate |
2015 |
url |
https://scholarworks.umass.edu/fishpassage_conference/2015/June24/16 https://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1942&context=fishpassage_conference |
genre |
Anguilla anguilla Salmo salar |
genre_facet |
Anguilla anguilla Salmo salar |
op_source |
International Conference on Engineering and Ecohydrology for Fish Passage |
op_relation |
https://scholarworks.umass.edu/fishpassage_conference/2015/June24/16 https://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1942&context=fishpassage_conference |
_version_ |
1766402196396572672 |