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Thin layer drying of wormwood (Artemisia absinthium L.) leaves: dehydration characteristics, rehydration capacity and energy consumption

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Abstract

This study aimed at determining the influence of temperature on drying, rehydration and consumed energy characteristics of common wormwood leaves during thin layer drying. The experiments were carried out at temperatures of 50, 60 and 70 °C and a constant air velocity of 0.7 m s−1. The dehydration duration decreased significantly with increasing drying air temperature. The usefulness of five different mathematical models to simulate the experimental drying kinetics was evaluated and the Midilli model was found to be the best model for explaining the curves. Effective moisture diffusivity values were obtained to be in the range of 7.099 × 10−8–3.191 × 10−7 m2 s−1. Rehydration capacity of the dried leaves increased with increasing rehydration water temperature and decreasing drying air temperature. The specific energy consumption decreased with any increment in drying air temperature and varied from 17.64 to 32.09 kWh kg−1.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Tiran Branch, Islamic Azad University, Tiran, Iran

    Mohsen Beigi

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  1. Mohsen Beigi
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Correspondence to Mohsen Beigi.

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Beigi, M. Thin layer drying of wormwood (Artemisia absinthium L.) leaves: dehydration characteristics, rehydration capacity and energy consumption. Heat Mass Transfer 53, 2711–2718 (2017). https://doi.org/10.1007/s00231-017-2018-3

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  • DOI: https://doi.org/10.1007/s00231-017-2018-3

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