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Energy and exergy analyses of malt drink production in Nigeria

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Listed:
  • Fadare, D.A.
  • Nkpubre, D.O.
  • Oni, A.O.
  • Falana, A.
  • Waheed, M.A.
  • Bamiro, O.A.

Abstract

Energy requirements and exergy inefficiencies for processing of malt drink were estimated for a Nigerian brewery. The process was divided into twenty-one basic unit operations and grouped into four main group operations: silo house, brew house, filter room and packaging house. The energy intensity for processing a batch of 9.8 tonnes brew grains to 562hl of malt drink was estimated as 261.63MJ/hl consisting of electrical (41.01%), thermal (58.81%) and manual (0.19%) of the total energy. The most energy intensive group operation was the Packaging House operation, followed by the Brew House operation with energy intensities of 223.19 and 35.94MJ/hl, respectively. The exergy analysis revealed that the packaging house operation was responsible for most of the inefficiency (92.16%) followed by brew house operation (7.17%) and the silo house and filter room operations with less than 1% of the total exergy lost. The most exergy loss took place in the pasteurizer, which accounted for 59.75% of the overall system inefficiency. Modification in the pasteurizer and use of spent grains as alternate source of energy in the steam boiler were recommended to improve the energy efficiency of the system.

Suggested Citation

  • Fadare, D.A. & Nkpubre, D.O. & Oni, A.O. & Falana, A. & Waheed, M.A. & Bamiro, O.A., 2010. "Energy and exergy analyses of malt drink production in Nigeria," Energy, Elsevier, vol. 35(12), pages 5336-5346.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:12:p:5336-5346
    DOI: 10.1016/j.energy.2010.07.026
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    References listed on IDEAS

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    4. 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.
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    6. Aghbashlo, Mortaza & Tabatabaei, Meisam & Khalife, Esmail & Roodbar Shojaei, Taha & Dadak, Ali, 2018. "Exergoeconomic analysis of a DI diesel engine fueled with diesel/biodiesel (B5) emulsions containing aqueous nano cerium oxide," Energy, Elsevier, vol. 149(C), pages 967-978.
    7. Dowlati, Majid & Aghbashlo, Mortaza & Mojarab Soufiyan, Mohamad, 2017. "Exergetic performance analysis of an ice-cream manufacturing plant: A comprehensive survey," Energy, Elsevier, vol. 123(C), pages 445-459.

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