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Experimental Errors Associated with the Estimation of Thermal Diffusivity from Thermal Process Data
Author(s) -
LARKIN JOHN W.,
STEFFE JAMES F.
Publication year - 1987
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.1365-2621.1987.tb06629.x
Subject(s) - thermal diffusivity , thermal conduction , thermocouple , heat equation , thermal , thermodynamics , process (computing) , retort , materials science , mechanics , chemistry , mathematics , physics , computer science , composite material , mathematical analysis , organic chemistry , operating system
An increase in the accuracy and precision of thermal diffusivity (α) was observed when estimated from thermal process data using the analytical heat conduction equation as compared to using the process f h value. Differences in α for the two methods ranged from 2.4 to 3.5%. Correcting for the presence of the thermocouple probe became more important with smaller can sizes. The analytical solution to the heat conduction equation proved to be a very sensitive model with regard to prolonged retort come‐up time and heat conduction along the thermocouple probe.