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Some Aspects of the Modelling of Thin-Layer Drying of Sawdust

Author

Listed:
  • Andrzej Bryś

    (Institute of Mechanical Engineering, Warsaw University of Life Sciences, ul. Nowoursynowska 164, 02-787 Warszawa, Poland)

  • Agnieszka Kaleta

    (Institute of Mechanical Engineering, Warsaw University of Life Sciences, ul. Nowoursynowska 164, 02-787 Warszawa, Poland)

  • Krzysztof Górnicki

    (Institute of Mechanical Engineering, Warsaw University of Life Sciences, ul. Nowoursynowska 164, 02-787 Warszawa, Poland)

  • Szymon Głowacki

    (Institute of Mechanical Engineering, Warsaw University of Life Sciences, ul. Nowoursynowska 164, 02-787 Warszawa, Poland)

  • Weronika Tulej

    (Institute of Mechanical Engineering, Warsaw University of Life Sciences, ul. Nowoursynowska 164, 02-787 Warszawa, Poland)

  • Joanna Bryś

    (Institute of Food Science, Warsaw University of Life Sciences, ul. Nowoursynowska 159c, 02-787 Warszawa, Poland)

  • Piotr Wichowski

    (Institute of Environmental Engineering, Warsaw University of Life Sciences, ul. Nowoursynowska 159, 02-776 Warszawa, Poland)

Abstract

Drying of spruce, beech, willow, and alder sawdust was examined in a laboratory type dryer. The effect of drying air temperature T (25, 60, and 80 °C) and airflow velocity v (0.01, 0.15, and 1.5 m/s) was investigated. The obtained results demonstrated that drying air temperature and airflow velocity have impacts on the drying of sawdust. The experimental dehydration data of sawdust obtained were fitted to theoretical, semi-theoretical, and empirical thin-layer models. The accuracies of the models were estimated using the correlation coefficient ( R ), root mean square error (RMSE), and reduced chi-square (χ 2 ). All models except the theoretical model of a sphere described the drying characteristics of sawdust satisfactorily. The effect of T and v on the parameters (constants and coefficients) of the drying models were determined. The effect, by the proposed equations, was also described. This work combines aspects of mechanical engineering and modelling of the drying process.

Suggested Citation

  • Andrzej Bryś & Agnieszka Kaleta & Krzysztof Górnicki & Szymon Głowacki & Weronika Tulej & Joanna Bryś & Piotr Wichowski, 2021. "Some Aspects of the Modelling of Thin-Layer Drying of Sawdust," Energies, MDPI, vol. 14(3), pages 1-16, January.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:3:p:726-:d:490200
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    References listed on IDEAS

    as
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