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Effective moisture diffusivity during hot air solar drying of tomato slices

Author

Listed:
  • H. Samimi. Akhijani

    (Department of Agrotechnology, University of Tehran, College of Abouraihan, Tehran, Iran)

  • A. Arabhosseini

    (Department of Agrotechnology, University of Tehran, College of Abouraihan, Tehran, Iran)

  • M.H. Kianmehr

    (Department of Agrotechnology, University of Tehran, College of Abouraihan, Tehran, Iran)

Abstract

Mathematical modelling and effective moisture diffusivity of tomato (Lycopersicon esculentum) was studied during hot air solar drying. An experimental solar dryer with a swivel collector was used for experiments. The collector followed the solar radiation using a precious sensor. Drying experiments were performed in a thin layer hot air drying at slice thicknesses of 3, 5 and 7 mm and air velocities of 0.5, 1 and 2 m/s. The experimental data were fitted to different mathematical moisture ratio models and the Page model was selected as the best model according to correlation coefficient R2, chi-square χ2 and root mean square error (RMSE) parameters. The maximum values of moisture diffusivity was 6.98 × 10-9 m2/s at air velocity of 2 m/s and slice thickness of 7 mm while the minimum value of the moisture diffusivity was 1.58 × 10-9 m2/s at air velocity of 0.5 m/s and slice thickness of 3 mm.

Suggested Citation

  • H. Samimi. Akhijani & A. Arabhosseini & M.H. Kianmehr, 2016. "Effective moisture diffusivity during hot air solar drying of tomato slices," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 62(1), pages 15-23.
    • Handle: RePEc:caa:jnlrae:v:62:y:2016:i:1:id:33-2014-rae
    DOI: 10.17221/33/2014-RAE
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    References listed on IDEAS

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    1. Akbulut, Abdullah & Durmuş, Aydin, 2010. "Energy and exergy analyses of thin layer drying of mulberry in a forced solar dryer," Energy, Elsevier, vol. 35(4), pages 1754-1763.
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    3. Yaldiz, Osman & Ertekin, Can & Uzun, H.Ibrahim, 2001. "Mathematical modeling of thin layer solar drying of sultana grapes," Energy, Elsevier, vol. 26(5), pages 457-465.
    4. E. Mirzaee & S. Rafiee & A. Keyhani & Z. Emam-Djomeh, 2009. "Determining of moisture diffusivity and activation energy in drying of apricots," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 55(3), pages 114-120.
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    Cited by:

    1. Hadi Samimi Akhijahani & Akbar Arabhosseini & Mohammad Hossein Kianmehr, 2017. "Comparative quality assessment of different drying procedures for plum fruits (Prunus domestica L.)," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 35(5), pages 449-455.

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