Section 11
Chapter 10,739

Heat transfer model performance in simulation of process deviations

Teixeira, A.; Balaban, M.; Germer, S.; Sadahira, M.; Teixeira-Neto, R.; Vitali, A.

Journal of food science 64(3): 488-493


ISSN/ISBN: 0022-1147
DOI: 10.1111/j.1365-2621.1999.tb15068.x
Accession: 010738430

Download citation:  

Performance of thermal process simulation software was tested for predicting internal product temperature and lethality. Responses were tested for process deviations on canned products with a wide range of heating characteristics for computer-based on-line control of retorts. Static and agitated processes were tested with products exhibiting heating rate factors (fh) ranging from 2 to 70 min. Cans were fitted with thermocouples and subjected to deviations of various types. Center temperature profiles and lethalities predicted by the model in response to dynamic retort temperatures were compared with those measured by thermocouples. Profiles agreed, and process lethalities calculated from predicted and measured profiles agreed +/- 10% with the model slightly underpredicting measured lethality.

PDF emailed within 0-6 h: $19.90