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Energy and exergy analysis of industrial fluidized bed drying of paddy

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  • Sarker, Md. Sazzat Hossain
  • Ibrahim, Mohd Nordin
  • Abdul Aziz, Norashikin
  • Punan, Mohd Salleh

Abstract

This paper presents energy and exergy analysis of industrial fluidized bed paddy drying. The maximum design capacity of the dryer was 22 t/h. Existing energy and exergy models developed applying the First and Second law of Thermodynamics are employed to estimate the amounts of energy used, the ratios of energy utilization, magnitude of exergy losses and exergy efficiencies during the drying process. The analysis shows that energy usage and (EUR) energy utilization ratios vary between 38.91 kJ/s to 132.00 kJ/s and 5.24–13.92 %, respectively while exergy efficiency vary from 46.99 to 58.14%. A simple exergy balance reveals that only 31.18–37.01 % exergy are utilized for drying of paddy and the remaining large amount of exergy are wasted. Exergy can be increased through providing sufficient insulation on dryer body and recycling the exhaust air which need to be studied further for investigating the economic feasibility.

Suggested Citation

  • Sarker, Md. Sazzat Hossain & Ibrahim, Mohd Nordin & Abdul Aziz, Norashikin & Punan, Mohd Salleh, 2015. "Energy and exergy analysis of industrial fluidized bed drying of paddy," Energy, Elsevier, vol. 84(C), pages 131-138.
    • Handle: RePEc:eee:energy:v:84:y:2015:i:c:p:131-138
    DOI: 10.1016/j.energy.2015.02.064
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    16. Dario Giuseppe Urbano & Andrea Aquino & Flavio Scrucca, 2023. "Energy Performance, Environmental Impacts and Costs of a Drying System: Life Cycle Analysis of Conventional and Heat Recovery Scenarios," Energies, MDPI, vol. 16(3), pages 1-12, February.
    17. Andrea Aquino & Pietro Poesio, 2021. "Off-Design Exergy Analysis of Convective Drying Using a Two-Phase Multispecies Model," Energies, MDPI, vol. 14(1), pages 1-36, January.
    18. El Hallaoui, Zhor & El Hamdani, Fayrouz & Vaudreuil, Sébastien & Bounahmidi, Tijani & Abderafi, Souad, 2022. "Identifying the optimum operating conditions for the integration of a solar loop to power an industrial flash dryer: Combining an exergy analysis with genetic algorithm optimization," Renewable Energy, Elsevier, vol. 191(C), pages 828-841.
    19. Lamidi, Rasaq. O. & Jiang, L. & Pathare, Pankaj B. & Wang, Y.D. & Roskilly, A.P., 2019. "Recent advances in sustainable drying of agricultural produce: A review," Applied Energy, Elsevier, vol. 233, pages 367-385.
    20. 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.
    21. Das, Hirakh Jyoti & Saikia, Rituraj & Mahanta, Pinakeswar, 2023. "Thermo-economic assessment of bubbling fluidized bed paddy dryers," Energy, Elsevier, vol. 263(PC).
    22. 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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