Abstract
This paper present a mathematical model for the drying of extruded fish feed
pellets. The model relies on conservation balances for moisture and energy. Sorption
isotherms from literature are used together with diffusion and transfer coefficients
obtained from dual parameter regression analysis against experimental data. The lumped
capacitance method for the estimation of the heat transfer coefficient is used. The model
performs well at temperatures ± 5 °C from sorption isotherm specificity, and for different
pellet sizes. There is a slight under-estimation of surface temperature of denser feed
pellets with lower mass diffusivities, possibly owing to a mischievously low conductivity
used for these pellets.
pellets. The model relies on conservation balances for moisture and energy. Sorption
isotherms from literature are used together with diffusion and transfer coefficients
obtained from dual parameter regression analysis against experimental data. The lumped
capacitance method for the estimation of the heat transfer coefficient is used. The model
performs well at temperatures ± 5 °C from sorption isotherm specificity, and for different
pellet sizes. There is a slight under-estimation of surface temperature of denser feed
pellets with lower mass diffusivities, possibly owing to a mischievously low conductivity
used for these pellets.
Originalsprog | Engelsk |
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Publikationsdato | aug. 2014 |
Antal sider | 7 |
Status | Udgivet - aug. 2014 |
Begivenhed | 19th International Drying Symposium - Lyon, Frankrig Varighed: 24. aug. 2014 → 27. aug. 2014 Konferencens nummer: 19 |
Konference
Konference | 19th International Drying Symposium |
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Nummer | 19 |
Land/Område | Frankrig |
By | Lyon |
Periode | 24/08/2014 → 27/08/2014 |