Cristin-resultat-ID: 1216177
Sist endret: 31. januar 2024, 13:50
Resultat
Rapport
2008

Feed pellet durability in pneumatic conveying systems for fish farming

Bidragsytere:
  • Mette Sørensen
  • Gaojie He
  • Maike Marlene Oehme
  • Torbjørn Einar Åsgård
  • Trond Storebakken og
  • Turid Synnøve Aas

Utgiver/serie

Utgiver

Nofima AS

Serie

Nofima rapportserie
ISSN 1890-579X

Om resultatet

Rapport
Publiseringsår: 2008
Hefte: 11/2008
Antall sider: 27
ISBN: 978-82-7251-642-9
Open Access

Beskrivelse Beskrivelse

Tittel

Feed pellet durability in pneumatic conveying systems for fish farming

Sammendrag

This report is based on Gaojie He’s master thesis, which was completed in june 2008 at the Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, supervised by Mette Sørensen and Trond Storebakken. The degradation of three commercial diets (denoted A, B and C) during pneumatic conveying at different air speeds and feeding rates was investigated in the present experiment. The experiment was arranged in a three by three by three factorial design, with physical quality (Doris value of feed A, B and C was 30.6, 23.7 and 16.5, respectively), airspeed (25, 39 and 35 m/s) and feeding rate (9, 18 and 36 kg/min). Degradation during pneumatic transportation was investigated using the research facilities of a company producing computer-controlled pneumatic feeding systems (AkvaMarina CCS Feed System, Akvasmart, AKVA group, Bryne, Norway). Feed samples of 2 kg were pneumatically conveyed through a 400 m pipeline. The samples were collected at the outlet of the pipeline and sieved in order to determine total degradation as well as amount of fractures and dust. Durability and hardness of the pellets were also evaluated by use of Ligno tester and texture analyzer. The results showed that degradation of pellets during pneumatic conveying was affected by physical quality of feed, airspeed and feeding rate. All three different diets showed different degradation patterns during pneumatic conveying. Pneumatic conveying of feed A showed the least degradation, generating the lowest amount of small particles. Feed B was ranked in between feed A and feed C in terms of degradation, but generated a relatively high amount of dust (particle size

Bidragsytere

Mette Sørensen

  • Tilknyttet:
    Forfatter
    ved Ernæring og fôrteknologi ved NOFIMA

Gaojie He

  • Tilknyttet:
    Forfatter
    ved Norges miljø- og biovitenskapelige universitet

Maike Marlene Oehme

  • Tilknyttet:
    Forfatter
    ved Ernæring og fôrteknologi ved NOFIMA

Torbjørn Einar Åsgård

  • Tilknyttet:
    Forfatter
    ved Ernæring og fôrteknologi ved NOFIMA

Trond Storebakken

  • Tilknyttet:
    Forfatter
    ved Institutt for husdyr- og akvakulturvitenskap ved Norges miljø- og biovitenskapelige universitet
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