Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton
A major challenge for the aquaculture sector is access to sustainable and cost-effective raw materials for feed. Copepods ( Calanus spp.) have potential to meet this need for large volumes of marine raw materials to enable sustainable growth of aquaculture production worldwide. However, the lack of...
Published in: | Ocean Engineering |
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2023
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Online Access: | https://orbit.dtu.dk/en/publications/03b07d85-baf3-4175-8ba5-99a2439f4db2 https://doi.org/10.1016/j.oceaneng.2023.116141 https://backend.orbit.dtu.dk/ws/files/339550232/1-s2.0-S0029801823025258-main.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/03b07d85-baf3-4175-8ba5-99a2439f4db2 2024-09-15T18:25:26+00:00 Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton Grimaldo, Eduardo Herrmann, Bent Kostak, Enis N. Brinkhof, Jesse 2023 application/pdf https://orbit.dtu.dk/en/publications/03b07d85-baf3-4175-8ba5-99a2439f4db2 https://doi.org/10.1016/j.oceaneng.2023.116141 https://backend.orbit.dtu.dk/ws/files/339550232/1-s2.0-S0029801823025258-main.pdf eng eng https://orbit.dtu.dk/en/publications/03b07d85-baf3-4175-8ba5-99a2439f4db2 info:eu-repo/semantics/openAccess Grimaldo , E , Herrmann , B , Kostak , E N & Brinkhof , J 2023 , ' Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton ' , Ocean Engineering , vol. 288 , no. Part 2 , 116141 . https://doi.org/10.1016/j.oceaneng.2023.116141 Calanus spp Drag Filtration efficiency Fishery Flow Trawl Zooplankton /dk/atira/pure/sustainabledevelopmentgoals/decent_work_and_economic_growth name=SDG 8 - Decent Work and Economic Growth /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2023 ftdtupubl https://doi.org/10.1016/j.oceaneng.2023.116141 2024-08-13T00:03:07Z A major challenge for the aquaculture sector is access to sustainable and cost-effective raw materials for feed. Copepods ( Calanus spp.) have potential to meet this need for large volumes of marine raw materials to enable sustainable growth of aquaculture production worldwide. However, the lack of an energy- and catch-efficient trawl technology has limited the development of this fishery in the Northeast Atlantic. Therefore, the goal of this study was to develop a next generation trawl for harvesting zooplankton that was less energy demanding and more catch efficient than current trawl designs. We assessed the filtration efficiency of low porosity nets with different solidities and studied the effects of design parameters (mesh opening, twine thickness, porosity, taper angle) at various flow velocities in a flume tank. We found that the filtration efficiency for a square meshed net increased with increasing velocity and decreasing solidity and taper angle. A large open area ratio (the ratio between the open netting area and the net's mouth area) improved the filtration efficiency at towing velocities below 0.5 ms −1 . These results provided an indication of the initial filtration efficiency of the net designs (i.e., before any clogging occurs) but not of the sustained filtration efficiency. Article in Journal/Newspaper Northeast Atlantic Copepods Technical University of Denmark: DTU Orbit Ocean Engineering 288 116141 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Calanus spp Drag Filtration efficiency Fishery Flow Trawl Zooplankton /dk/atira/pure/sustainabledevelopmentgoals/decent_work_and_economic_growth name=SDG 8 - Decent Work and Economic Growth /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Calanus spp Drag Filtration efficiency Fishery Flow Trawl Zooplankton /dk/atira/pure/sustainabledevelopmentgoals/decent_work_and_economic_growth name=SDG 8 - Decent Work and Economic Growth /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Grimaldo, Eduardo Herrmann, Bent Kostak, Enis N. Brinkhof, Jesse Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
topic_facet |
Calanus spp Drag Filtration efficiency Fishery Flow Trawl Zooplankton /dk/atira/pure/sustainabledevelopmentgoals/decent_work_and_economic_growth name=SDG 8 - Decent Work and Economic Growth /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
A major challenge for the aquaculture sector is access to sustainable and cost-effective raw materials for feed. Copepods ( Calanus spp.) have potential to meet this need for large volumes of marine raw materials to enable sustainable growth of aquaculture production worldwide. However, the lack of an energy- and catch-efficient trawl technology has limited the development of this fishery in the Northeast Atlantic. Therefore, the goal of this study was to develop a next generation trawl for harvesting zooplankton that was less energy demanding and more catch efficient than current trawl designs. We assessed the filtration efficiency of low porosity nets with different solidities and studied the effects of design parameters (mesh opening, twine thickness, porosity, taper angle) at various flow velocities in a flume tank. We found that the filtration efficiency for a square meshed net increased with increasing velocity and decreasing solidity and taper angle. A large open area ratio (the ratio between the open netting area and the net's mouth area) improved the filtration efficiency at towing velocities below 0.5 ms −1 . These results provided an indication of the initial filtration efficiency of the net designs (i.e., before any clogging occurs) but not of the sustained filtration efficiency. |
format |
Article in Journal/Newspaper |
author |
Grimaldo, Eduardo Herrmann, Bent Kostak, Enis N. Brinkhof, Jesse |
author_facet |
Grimaldo, Eduardo Herrmann, Bent Kostak, Enis N. Brinkhof, Jesse |
author_sort |
Grimaldo, Eduardo |
title |
Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
title_short |
Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
title_full |
Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
title_fullStr |
Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
title_full_unstemmed |
Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
title_sort |
understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
publishDate |
2023 |
url |
https://orbit.dtu.dk/en/publications/03b07d85-baf3-4175-8ba5-99a2439f4db2 https://doi.org/10.1016/j.oceaneng.2023.116141 https://backend.orbit.dtu.dk/ws/files/339550232/1-s2.0-S0029801823025258-main.pdf |
genre |
Northeast Atlantic Copepods |
genre_facet |
Northeast Atlantic Copepods |
op_source |
Grimaldo , E , Herrmann , B , Kostak , E N & Brinkhof , J 2023 , ' Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton ' , Ocean Engineering , vol. 288 , no. Part 2 , 116141 . https://doi.org/10.1016/j.oceaneng.2023.116141 |
op_relation |
https://orbit.dtu.dk/en/publications/03b07d85-baf3-4175-8ba5-99a2439f4db2 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.oceaneng.2023.116141 |
container_title |
Ocean Engineering |
container_volume |
288 |
container_start_page |
116141 |
_version_ |
1810465942710255616 |