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SPIKED‐PLATE FREEZE DRYING
Author(s) -
HATCHER JOHN D.,
SUNDERLAND J. EDWARD
Publication year - 1971
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.1365-2621.1971.tb15556.x
Subject(s) - spike (software development) , hot plate , composite material , materials science , freeze drying , acceleration , analytical chemistry (journal) , chemistry , chromatography , computer science , physics , software engineering , classical mechanics
SUMMARY— The acceleration of freeze‐drying rates using spiked plates was observed experimentally and found to reduce overall drying times by as much as 24 hr. Experiments were conducted using different spike diameters, sample thickness, spike materials and heater plate temperatures. Weight loss and temperature profiles were obtained as a function of drying times. These experimental results were used to develop a simplified mathematical model for predicting drying rates which will be of use to the designer of spiked‐plate freeze‐drying systems. Results obtained using the mathematical model indicate spike diameter, spike spacing and plate temperature have significant effect on the drying rate, whereas sample thickness and spike material are not significant.