Simulation of heat and mass transfer in spray drying

J. van der Lijn

    Research output: Thesisexternal PhD, WU

    Abstract

    <p/>A survey is given of heat and mass transfer around droplets in spray dryers and the diffusional transport inside them. A calculational model is developed which includes variable diffusion coefficients in the drying liquid and swelling or shrinking of droplets. Calculations for droplets containing soluble solids show how the drying histories of droplets are influenced by three extreme patterns of air circulation and spray dispersion, and by droplet inflation. The influence of these factors on the properties of spray-dried liquid foods are discussed. Furthermore diffusion equations for binary systems are surveyed and diffusion coefficients for super-saturated aqueous maltose solutions are reported.
    Original languageEnglish
    QualificationDoctor of Philosophy
    Awarding Institution
    Supervisors/Advisors
    • Leniger, H.A., Promotor
    • Thijssen, H.A.C., Co-promotor, External person
    Award date18 Feb 1976
    Place of PublicationWageningen
    Publisher
    Print ISBNs9789022005958
    Publication statusPublished - 1976

    Keywords

    • heat treatment
    • heat exchangers
    • spray drying
    • computer simulation
    • simulation
    • simulation models

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