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Thermodynamic analysis of fluidized bed drying of carrot cubes

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  • Nazghelichi, Tayyeb
  • Kianmehr, Mohammad Hossein
  • Aghbashlo, Mortaza

Abstract

In this study, the energy and exergy analyses of fluidized bed drying of carrot cubes were investigated. Drying experiments were conducted at inlet air temperatures of 50, 60, and 70 °C, BD (bed depths) of 30, 60, and 90 mm and square-cubed carrot dimensions of 4, 7, and 10 mm. The effects of drying variables on energy utilization, energy utilization ratio, exergy loss and exergy efficiency were studied. The energy utilization and energy utilization ratio varied between 0.105–1.949 kJ/s and 0.074–0.486, respectively. The exergy loss and exergy efficiency were found to be in the range of 0.206–1.612 kJ/s and 0.103–0.707, respectively. The results showed that small particles, deep beds and high inlet air temperatures increased energy utilization, energy utilization ratio, and exergy loss due to high value of heat and mass transfer. Also, the exergy efficiency had maximum value when higher drying air temperature, larger CS (cube size) and shorter BD were used for drying experiment.

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  • Nazghelichi, Tayyeb & Kianmehr, Mohammad Hossein & Aghbashlo, Mortaza, 2010. "Thermodynamic analysis of fluidized bed drying of carrot cubes," Energy, Elsevier, vol. 35(12), pages 4679-4684.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:12:p:4679-4684
    DOI: 10.1016/j.energy.2010.09.036
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    5. Beigi, Mohsen & Tohidi, Mojtaba & Torki-Harchegani, Mehdi, 2017. "Exergetic analysis of deep-bed drying of rough rice in a convective dryer," Energy, Elsevier, vol. 140(P1), pages 374-382.
    6. Darvishi, Hosain & Azadbakht, Mohsen & Noralahi, Bashir, 2018. "Experimental performance of mushroom fluidized-bed drying: Effect of osmotic pretreatment and air recirculation," Renewable Energy, Elsevier, vol. 120(C), pages 201-208.
    7. Jankowiak, Lena & Jonkman, Jochem & Rossier-Miranda, Francisco J. & van der Goot, Atze Jan & Boom, Remko M., 2014. "Exergy driven process synthesis for isoflavone recovery from okara," Energy, Elsevier, vol. 74(C), pages 471-483.
    8. Ranjbaran, M. & Zare, D., 2013. "Simulation of energetic- and exergetic performance of microwave-assisted fluidized bed drying of soybeans," Energy, Elsevier, vol. 59(C), pages 484-493.
    9. Liu, Zi-Liang & Zielinska, Magdalena & Yang, Xu-Hai & Yu, Xian-Long & Chen, Chang & Wang, Hui & Wang, Jun & Pan, Zhongli & Xiao, Hong-Wei, 2021. "Moisturizing strategy for enhanced convective drying of mushroom slices," Renewable Energy, Elsevier, vol. 172(C), pages 728-739.
    10. Aghbashlo, Mortaza & Mobli, Hossein & Rafiee, Shahin & Madadlou, Ashkan, 2013. "A review on exergy analysis of drying processes and systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 22(C), pages 1-22.
    11. Motevali, Ali & Minaei, Saeid & Khoshtaghaza, Mohammad Hadi & Amirnejat, Hamed, 2011. "Comparison of energy consumption and specific energy requirements of different methods for drying mushroom slices," Energy, Elsevier, vol. 36(11), pages 6433-6441.
    12. Özahi, Emrah & Demir, Hacımurat, 2013. "A model for the thermodynamic analysis in a batch type fluidized bed dryer," Energy, Elsevier, vol. 59(C), pages 617-624.
    13. Sivakumar, R. & Saravanan, R. & Elaya Perumal, A. & Iniyan, S., 2016. "Fluidized bed drying of some agro products – A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 61(C), pages 280-301.
    14. Yogendrasasidhar, D. & Pydi Setty, Y., 2018. "Drying kinetics, exergy and energy analyses of Kodo millet grains and Fenugreek seeds using wall heated fluidized bed dryer," Energy, Elsevier, vol. 151(C), pages 799-811.

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