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 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 150
  • Publication Date: 2020
  • Doi Number: 10.1016/j.renene.2020.01.040
  • Journal Name: RENEWABLE ENERGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Communication Abstracts, Compendex, Environment Index, Geobase, Greenfile, Index Islamicus, INSPEC, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, DIALNET, Civil Engineering Abstracts
  • 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
  • Yıldız Technical University Affiliated: Yes

Abstract

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.