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Simplified Models for Estimating Isothermal Operating Characteristics of Food Extruders
Author(s) -
Levine Leon,
Rockwood Jeffrey
Publication year - 1985
Publication title -
biotechnology progress
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.572
H-Index - 129
eISSN - 1520-6033
pISSN - 8756-7938
DOI - 10.1002/btpr.5420010308
Subject(s) - plastics extrusion , isothermal process , metering mode , compression (physics) , materials science , dissipation , mechanics , mechanical engineering , composite material , process engineering , engineering , thermodynamics , physics
A model of isothermal food extruder performance is described. Inferences about alternative extruder screw designs and their performance are drawn from the model. The model suggests that thread depth or diameter compression screws are superior in performance to a pitch compression screw. The advantage gained from using diameter compression screws is paid for with significantly higher rates of energy dissipation. The use of the model to characterize screws having both a compression zone and metering zone is described.