Modeling and Simulation of a Co-Current Rotary Dryer Under Steady Conditions

Carlos A. Bustamante, Alan F. Hill, Daniel F. Rodríguez, Mauricio Giraldo, Whady F. Flórez

    Research output: Contribution to journalArticle in an indexed scientific journalpeer-review

    6 Scopus citations


    A model which joins the overall design algorithm of a rotary dryer with the drying kinetics equations derived from experimental data and with a finite segment algorithm is implemented in order to verify the dryer dimensions obtained from a basic sizing procedure. Total energy and mass balances and well-known correlations for the overall heat transfer coefficient are employed to develop it. Moreover, a one-dimensional finite segment model is solved to obtain the length profiles of temperature and water content for the air and solid phases. An experimental correlation for the mass transfer coefficient between solid and air phases is included in the finite segment model. The chosen heat transfer unit number for the basic sizing is verified with the outlet temperature and water content calculated by the finite segment scheme.

    Original languageEnglish
    Pages (from-to)469-475
    Number of pages7
    JournalDrying Technology
    Issue number4
    StatePublished - Feb 2014

    Bibliographical note

    Funding Information:
    The present work is supported by COLCIENCIAS and Empresas Públicas de Medellín (EPM) as part of the funding provided to the project Energetic Assessment of the San Fernando Plant Bio-solids, which has been developed by a consortium of local academic institutions and the public utility company EPM, known as the Energy Research and Innovation Centre (CIIEN).


    • Basic sizing
    • Drying coupled model
    • Finite segment
    • Heat transfer coefficient
    • Mass transfer coefficient
    • Rotary dryer


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