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Modeling of Residence Times in Continuous Fluidized Bed Freezers
Author(s) -
VÁZQUEZ A.,
CALVELO A.
Publication year - 1983
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1983.tb09166.x
Subject(s) - fluidized bed , residence time (fluid dynamics) , dispersion (optics) , residence time distribution , mechanics , environmental science , fluidization , particle (ecology) , simulation , mathematics , thermodynamics , computer science , engineering , geotechnical engineering , geology , physics , flow (mathematics) , oceanography , optics
A longitudinal dispersion model is proposed for analyzing the movement of peas along continuous fluidized bed freezers. By comparing the model with experimental data, a dispersion coefficient is obtained which correlates satisfactorily with the bed height and the superficial air velocity. Thus, minimum residence times can be predicted in terms of bed dimensions and operating conditions in the fluidized freezer. By adapting an individual particle model for freezing time prediction to the existing conditions in fluidized bed freezers, the analysis of production rate in terms of design parameters is performed. Thus, an optimum bed height which maximizes the production rate per unit of grid area is obtained.