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Determination of Retortable Pouch Heat Transfer Coefficients by Optimization Method
Author(s) -
LEBOWITZ SAMUEL F.,
BHOWMIK SANTI R.
Publication year - 1989
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.1365-2621.1989.tb05122.x
Subject(s) - pouch , retort , heat transfer , flow (mathematics) , mechanics , process (computing) , water flow , mass transfer , materials science , heat transfer coefficient , thermodynamics , environmental science , computer science , chemistry , geology , environmental engineering , physics , paleontology , organic chemistry , operating system
A computer‐based optimization technique was developed for determining the apparent heat transfer coefficient (h) for retortable pouches heated by circulated hot water under overriding air pressure. The technique incorporated actual process data, a finite difference model and an optimization criteria to converge on h values. A water flow channel was constructed to fit inside a vertical retort which allowed direct water exposure on the pouch surface at a quantifiable velocity. Because the optimization technique was not dependent on analytical equations, it could be applied to such areas as future heat transfer studies of new retortable pouch materials, designing new pouch‐holding cassettes and improving water flow patterns in retorts.