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Specific energy consumption in microwave drying of garlic cloves

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  • Sharma, G.P.
  • Prasad, Suresh

Abstract

The convective and microwave-convective drying of garlic cloves was carried out in a laboratory scale microwave dryer, which was developed for this purpose. The specific energy consumption involved in the two drying processes was estimated from the energy supplied to the various components of the dryer during the drying period. The specific energy consumption was computed by dividing the total energy supplied by amount of water removed during the drying process. The specific energy consumption in convective drying of garlic cloves at 70°C temperature and 1.0m/s air velocity was estimated as 85.45MJ/kg of water evaporated. The increase in air velocity increased the energy consumption. The specific energy consumption at 40W of microwave power output, 70°C air temperature and 1.0m/s air velocity was 26.32MJ/kg of water removed, resulting in about a 70% energy saving as compared to convective drying processes. The drying time increased with increase in air velocity in microwave-convective drying process; a trend reverse to what was observed in convective drying process of garlic cloves.

Suggested Citation

  • Sharma, G.P. & Prasad, Suresh, 2006. "Specific energy consumption in microwave drying of garlic cloves," Energy, Elsevier, vol. 31(12), pages 1921-1926.
    • Handle: RePEc:eee:energy:v:31:y:2006:i:12:p:1921-1926
    DOI: 10.1016/j.energy.2005.08.006
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    Cited by:

    1. Dhayaneswaran, Y. & Ashok Kumar, L., 2014. "A study on current characteristics of induction motor while operating at its base frequency in textile industry," Energy, Elsevier, vol. 74(C), pages 340-345.
    2. Adolf Rybka & Petr Heřmánek & Ivo Honzík, 2021. "Effect of drying temperature in hop dryer on hop quality," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 67(1), pages 1-7.
    3. Acevedo, Luis & Usón, Sergio & Uche, Javier, 2014. "Exergy transfer analysis of microwave heating systems," Energy, Elsevier, vol. 68(C), pages 349-363.
    4. Palamutcu, S., 2010. "Electric energy consumption in the cotton textile processing stages," Energy, Elsevier, vol. 35(7), pages 2945-2952.
    5. Zhang, Weijiang & Yao, Ye & He, Beixing & Wang, Rongshun, 2011. "The energy-saving characteristic of silica gel regeneration with high-intensity ultrasound," Applied Energy, Elsevier, vol. 88(6), pages 2146-2156, June.
    6. Hany S. EL-Mesery & Abd El-Fatah Abomohra & Chan-Ung Kang & Ji-Kwang Cheon & Bikram Basak & Byong-Hun Jeon, 2019. "Evaluation of Infrared Radiation Combined with Hot Air Convection for Energy-Efficient Drying of Biomass," Energies, MDPI, vol. 12(14), pages 1-15, July.
    7. Bhattacharya, Madhuchhanda & Basak, Tanmay, 2013. "A theoretical study on the use of microwaves in reducing energy consumption for an endothermic reaction: Role of metal coated bounding surface," Energy, Elsevier, vol. 55(C), pages 278-294.
    8. 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.
    9. Anubhav Pratap Singh & Ronit Mandal & Maryam Shojaei & Anika Singh & Przemysław Łukasz Kowalczewski & Marta Ligaj & Jarosław Pawlicz & Maciej Jarzębski, 2020. "Novel Drying Methods for Sustainable Upcycling of Brewers’ Spent Grains as a Plant Protein Source," Sustainability, MDPI, vol. 12(9), pages 1-17, May.
    10. Singh, Shobhana & Kumar, Subodh, 2013. "Solar drying for different test conditions: Proposed framework for estimation of specific energy consumption and CO2 emissions mitigation," Energy, Elsevier, vol. 51(C), pages 27-36.
    11. Azadbakht, Mohsen & Torshizi, Mohammad Vahedi & Noshad, Fatemeh & Rokhbin, Arash, 2018. "Application of artificial neural network method for prediction of osmotic pretreatment based on the energy and exergy analyses in microwave drying of orange slices," Energy, Elsevier, vol. 165(PB), pages 836-845.
    12. Balbay, Asim & Kaya, Yilmaz & Sahin, Omer, 2012. "Drying of black cumin (Nigella sativa) in a microwave assisted drying system and modeling using extreme learning machine," Energy, Elsevier, vol. 44(1), pages 352-357.
    13. Tohidi, Mojtaba & Sadeghi, Morteza & Torki-Harchegani, Mehdi, 2017. "Energy and quality aspects for fixed deep bed drying of paddy," Renewable and Sustainable Energy Reviews, Elsevier, vol. 70(C), pages 519-528.

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