Journal of Food Processing and Preservation · 1983 · 11 citations · 4 references
EngineeringFood ScienceMechanical EngineeringHeat TransferThermal AnalysisThermodynamicsHeat ConductionHeat Transfer AnalysisHeat Transfer ModelingRefrigerationTemperature MeasurementThermal History AnalysisConductionConduction CoolingContainer Heat TransferContainersExperimental Thermal TestingHeat Penetration AnalysisHeat Transfer CharacterizationTemperature Rise Analysis
Temperature histories at the geometric center of containers filled with conduction heating products exhibit a rise after steamoff under certain conditions. This temperature rise (called overshooting), is quantified for cylindrical containers subjected to air and water cooling. Results of computer simulations using the Finite Element method suggest that the extent of overshooting is greater during air cooling than during water cooling. Heat penetration tests in laboratory and industrial retorts indicate that the overshooting phenomenon during water cooling is especially pronounced when conduction heating products are packaged in large metal containers and glass jars (e.g., a temperature rise of 2.5°C for 30 min was measured in a No. 10 can).
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