Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 423114
Title Natural convection heating of liquids, with reference to sterilization of canned food
Author(s) Hiddink, J.
Source Landbouwhogeschool Wageningen. Promotor(en): J. Schenk, co-promotor(en): S. Bruin. - Wageningen : Centre for Agricultural Publishing and Documentation Pudoc - ISBN 9789022005743 - 128 p.
Department(s) Wageningen University
Publication type Dissertation, internally prepared
Publication year 1975
Keyword(s) ingeblikte producten - inblikken - convectie - voedselbewaring - voedingsmiddelen - plantaardige producten - steriliseren - thermodynamica - canned products - canning - convection - food preservation - foods - plant products - sterilizing - thermodynamics
Categories Transport Phenomena
Abstract <p/>In a model system the physical transport phenomena that occur during the sterilization of a canned liquid food were investigated. Flow phenomena and heat transfer were studied experimentally as well as theoretically. Experiments on flow patterns and temperature profiles revealed a boundary layer flow at the vertical sidewall, a stratified core in the upper part of the container and a perfectly mixed, unstratified region in the lower part of the container. A dimensionless correlation for the overall heat transfer coefficient from steam to liquid was determined.<p/>From the observed flow patterns and temperature profiles a simplified mathematical model was developed, with which temperature stratification in the liquid during heating could be simulated. The applicability of the simplified model for lethality calculations was briefly examined.<p/>Some attention was also paid to the effect of solid particles on heating characteristics of the container contents.<p/>Literature on the research of convection heating of liquids in closed containers was reviewed, as well as literature about the influence of temperature stratification on natural convection boundary layer flow.
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