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Assessment of energy and exergy efficiencies of a grate clinker cooling system through the optimization of its operational parameters

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  • Ahamed, J.U.
  • Madlool, N.A.
  • Saidur, R.
  • Shahinuddin, M.I.
  • Kamyar, A.
  • Masjuki, H.H.

Abstract

Grate coolers are widely used in cement industries to recover heat from hot clinker, coming out from the rotary kiln. This study focuses on improving the energy, exergy and recovery efficiencies of a grate cooling system through the optimization of its operational parameters such as masses of cooling air and clinker, cooling air temperature, and grate speed. It has been found that the energy and recovery energy efficiencies of a cooling system can be increased by 1.1% and 1.9%, respectively, with every 5% mass increases of cooling air. Similarly, it has been estimated that energy and recovery energy efficiencies can be increased by 2.0% and 0.4% with every 5% increase of cooling temperature. The exergy and its recovery efficiencies found to be increased by 3.6% and 2.2%, respectively, for the same condition. Energy efficiency and energy recovery efficiencies are increased by 3.5% and 1.4% with every 9.1% increase of grate speed. Using heat recovery from the exhaust air, energy and exergy recovery efficiencies of the cooling system found to be increased by 21.5% and 9.4%, respectively. It has been found that about 38.10% and 30.86% energy cost can be saved by changing mass flow rate of clinker and mass flow rate of cooling air, respectively.

Suggested Citation

  • Ahamed, J.U. & Madlool, N.A. & Saidur, R. & Shahinuddin, M.I. & Kamyar, A. & Masjuki, H.H., 2012. "Assessment of energy and exergy efficiencies of a grate clinker cooling system through the optimization of its operational parameters," Energy, Elsevier, vol. 46(1), pages 664-674.
    • Handle: RePEc:eee:energy:v:46:y:2012:i:1:p:664-674
    DOI: 10.1016/j.energy.2012.06.074
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    References listed on IDEAS

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    1. Saidur, R. & Ahamed, J.U. & Masjuki, H.H., 2010. "Energy, exergy and economic analysis of industrial boilers," Energy Policy, Elsevier, vol. 38(5), pages 2188-2197, May.
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    Cited by:

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    2. Yang, Siyu & Yang, Qingchun & Qian, Yu, 2013. "A composite efficiency metrics for evaluation of resource and energy utilization," Energy, Elsevier, vol. 61(C), pages 455-462.
    3. Fellaou, S. & Bounahmidi, T., 2018. "Analyzing thermodynamic improvement potential of a selected cement manufacturing process: Advanced exergy analysis," Energy, Elsevier, vol. 154(C), pages 190-200.
    4. Karellas, S. & Leontaritis, A.-D. & Panousis, G. & Bellos, E. & Kakaras, E., 2013. "Energetic and exergetic analysis of waste heat recovery systems in the cement industry," Energy, Elsevier, vol. 58(C), pages 147-156.
    5. Madlool, N.A. & Saidur, R. & Rahim, N.A. & Kamalisarvestani, M., 2013. "An overview of energy savings measures for cement industries," Renewable and Sustainable Energy Reviews, Elsevier, vol. 19(C), pages 18-29.
    6. Liu, Yan & Yang, Jian & Wang, Jin & Cheng, Zhi-long & Wang, Qiu-wang, 2014. "Energy and exergy analysis for waste heat cascade utilization in sinter cooling bed," Energy, Elsevier, vol. 67(C), pages 370-380.

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