Performance analysis and mathematical modelling of banana slices in a heat pump drying system

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Tunçkal C., Doymaz İ.

RENEWABLE ENERGY, vol.150, pp.918-923, 2020 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 150
  • Publication Date: 2020
  • Doi Number: 10.1016/j.renene.2020.01.040
  • Title of Journal : RENEWABLE ENERGY
  • Page Numbers: pp.918-923
  • Keywords: Activation energy, Banana slices, Effective moisture diffusivity, Heat pump drying system, Mathematical modelling, EXERGOECONOMIC EVALUATION, TOMATO SLICES, KINETICS, TEMPERATURE, DRYER, LAYER, SIMULATION, SHRINKAGE, PART


In this study, banana slices were dried at different temperatures in a closed-loop heat pump drying system. As the temperature and the slice thickness increased, the drying time also increased. Midilli & Kucuk model was found to be the best model to explain the experimental data. The effective moisture diffusivity ranged from 1.12 x 10(-10) to 1.64 x 10(-10) m(2)/s. The dependence of moisture diffusivity on temperature was described by an Arrhenius-type equation and the activation energy was found to be -51.45 kJ/mol. The highest mean specific moisture extraction ratio (SMER) and coefficient of performance (COP) of HPD system were obtained as 0.212 kg/kWh and 3.059, respectively, at the highest drying air temperature. (C) 2020 Elsevier Ltd. All rights reserved.