1993 Fiscal Year Final Research Report Summary
Basic Study of Optimization for Determining Temperature of Canned Food in Sterilizing Process
| Project/Area Number |
04660135
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
製造化学・食品
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| Research Institution | Tokyo University of Fisheries |
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Principal Investigator |
HANZAWA Tamotsu Tokyo Univ.of Fisheries ; Professor, 水産学部, 教授 (10008451)
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| Co-Investigator(Kenkyū-buntansha) |
SAKAI Noboru Tokyo Univ.of Fisheries ; Research Associate, 水産学部, 助手 (20134009)
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| Project Period (FY) |
1992 – 1993
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| Keywords | Canned food in oil, / The slowest heating point / Sterilizing process, / Natural convective heat transfer / 自然対流熱伝達 |
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| Research Abstract |
(1992) To obtain a basic understanding of natural convective heat transfer for edible oil in cans, tracer observations of the flow pattern in a cylindrical flat enclosure, which was a model of the cans, were carried out. The temperature profiles and heat transfer coefficients at the bottom surface at constant temperature were measured in the case where the configuration included la heated bottom and cooled side wall, and the top surface was insulated by the head space. The effects of operating conditions on the temperature profiles, flow pattern and heat transfer coefficient were investigated. An empirical equation of the heat transfer coefficient of the heated bottom surface was obtained for natural convective flow in the system.
(1993) To obtain the heat transfer therotically for solid food in this can, the temperature distributions were calculated numerically from fundamental equations at unsteady state. The position of the slowest heating or cooling point was obtained accurately under various operating condisions. Furthermore, to check these calculated results, local temperatu profiles in this can were measured experimentally.
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