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Energy and exergy analysis, drying kinetics, modeling, microstructure and thermal properties of convective-dried banana slices

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Abstract

In this presented study, the convective air drying method at three drying temperatures (50, 60 and 70 °C) was applied to investigate in terms of energy and exergy analysis, drying kinetics, modeling, microstructure and thermal properties of banana slices. Results of data analysis displayed that the energy and the exergy efficiencies were reduced, while the drying temperature surged. The drying process at 70 °C shortened the overall drying period (300 min), which was followed by 60 °C (480 min) and 50 °C (720 min), respectively. Moreover, the process occurred in the decreasing rate with time. At each drying temperature, various models (Midilli et al. for 50 °C, diffusion approach for 60 °C and logarithmic for 70 °C) described the best models for the drying curves. The convective-dried banana samples were imaged by the thermal camera and scanning electron microscopy, and a breakdown of cell walls without any regional burns was determined in dried samples at 50 °C. The result of this study could be used as a convective drying in industrial purposes.

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Authors and Affiliations

  1. Department of Biosystems Engineering, Faculty of Agriculture, University of Bursa Uludag, Gorukle Campus, 16059, Bursa, Turkey

    Onur Taskin, Ahmet Polat & Nazmi Izli

  2. Department of Mechanical Engineering, Faculty of Engineering, University of Bursa Uludag, Gorukle Campus, 16059, Bursa, Turkey

    Akin Burak Etemoglu

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  1. Onur Taskin
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Taskin, O., Polat, A., Etemoglu, A.B. et al. Energy and exergy analysis, drying kinetics, modeling, microstructure and thermal properties of convective-dried banana slices. J Therm Anal Calorim 147, 2343–2351 (2022). https://doi.org/10.1007/s10973-021-10639-z

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