A Simplified Method for On-Line Determination of Thermal Parameters Responsible to Estimate Temperature History during Thermal Process in Conduction Heating Foods
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概要
- 論文の詳細を見る
An inverse procedure has been proposed for on-line determination of thermal parameters in conduction heating foods to achieve appropriate sterilization. The proposed method made use of data collected at the early stages of the heating phase to predict the parameters responsible for the transfer of heat in the conduction heating food. Inherent with the proposed method are some limitations and instabilities, which are manifested especially when there happened to be noise or disturbances during data acquisition. To eliminate these limitations and instabilities a new robust procedure for on-line control to achieve appropriate sterilization in conduction heating foods is proposed in this paper. This method makes use of the well known fact that after a sufficiently large amount of time has elapsed, a semi-logarithmic plot of temperature against time yields a straight line: of which, from the slope and intercept, the thermal parameters responsible for heat transfer are determined. The inflection point in the time/temperature curve is used as an index to detect the time from which the straight line commences. The use of estimated parameters was validated by experiments to be helpful to achieve a targeted lethality.
- 社団法人 日本食品科学工学会の論文
- 2000-08-01
著者
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Assan Mark
Food Science And Technology Department Tokyo University Of Fisheries
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WATANABE Hisahiko
Food Science and Technology Department, Tokyo University of Fisheries
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MIHORI Tomowo
Food Science and Technology Department, Tokyo University of Fisheries
関連論文
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- An On-Line Inverse Method for Estimation of Thermal Parameters Which Are Responsible to Predicting Temperature History in Food Heating/Freezing.
- A Simplified Method for On-Line Determination of Thermal Parameters Responsible to Estimate Temperature History during Thermal Process in Conduction Heating Foods
- Temperature Distribution at the Surface of Cans in an Industrial Scale Static Retort during Saturated Steam Sterilization