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Natural Gas Intermittent Kiln for the Ceramic Industry: A Transient Thermal Analysis

Author

Listed:
  • Ricardo S. Gomez

    (Department of Mechanical Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil)

  • Túlio R. N. Porto

    (Department of Mechanical Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil)

  • Hortência L. F. Magalhães

    (Department of Chemical Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil)

  • Gicelia Moreira

    (Department of Chemical Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil)

  • Anastácia M. M. C. N. André

    (Department of Mechanical Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil)

  • Ruth B. F. Melo

    (Department of Physics, State University of Paraiba, Campina Grande 58431-410, Brazil)

  • Antonio G. B. Lima

    (Department of Mechanical Engineering, Federal University of Campina Grande, Campina Grande 58429-900, Brazil)

Abstract

Drying and firing of ceramic products are processes that require high energy consumption. Making these processes more efficient can improve product quality, reduce processing time and energy consumption, and promote economic and environmental gains. In this sense, this work aims to quantify heat transfer in an intermittent ceramic kiln during the heating and cooling stages, with and without thermal insulation. All mathematical formulation is based on the first law of thermodynamics. From the results, we conclude that the greatest heat loss occurs by radiation in the sidewalls of the equipment, and that a considerable amount of energy is required to heat the sidewalls, base, and ceiling of the kiln. Further, with the use of thermal insulation, it was concluded that a high reduction in the heat lost through the sidewalls was achieved, thus providing a global energy gain of approximately 35% and a reduction in the maximum external surface temperature from 249.34 to 79.47 °C when compared to the kiln without thermal insulation, reducing the risks of work accidents and thermal discomfort when in operation.

Suggested Citation

  • Ricardo S. Gomez & Túlio R. N. Porto & Hortência L. F. Magalhães & Gicelia Moreira & Anastácia M. M. C. N. André & Ruth B. F. Melo & Antonio G. B. Lima, 2019. "Natural Gas Intermittent Kiln for the Ceramic Industry: A Transient Thermal Analysis," Energies, MDPI, vol. 12(8), pages 1-29, April.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:8:p:1568-:d:225837
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    References listed on IDEAS

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    1. Han, Sang Heon & Chang, Daejun & Huh, Cheol, 2011. "Efficiency analysis of radiative slab heating in a walking-beam-type reheating furnace," Energy, Elsevier, vol. 36(2), pages 1265-1272.
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    3. Hadała, Beata & Malinowski, Zbigniew & Rywotycki, Marcin, 2017. "Energy losses from the furnace chamber walls during heating and heat treatment of heavy forgings," Energy, Elsevier, vol. 139(C), pages 298-314.
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    Cited by:

    1. Iván D. Palacio-Caro & Pedro N. Alvarado-Torres & Luis F. Cardona-Sepúlveda, 2020. "Numerical Simulation of the Flow and Heat Transfer in an Electric Steel Tempering Furnace," Energies, MDPI, vol. 13(14), pages 1-22, July.
    2. Václav Kočí & Lenka Scheinherrová & Jiří Maděra & Martin Keppert & Zbigniew Suchorab & Grzegorz Łagód & Robert Černý, 2020. "Experimental and Computational Study of Thermal Processes in Red Clays Exposed to High Temperatures," Energies, MDPI, vol. 13(9), pages 1-15, May.
    3. Miguel Castro Oliveira & Muriel Iten & Pedro L. Cruz & Helena Monteiro, 2020. "Review on Energy Efficiency Progresses, Technologies and Strategies in the Ceramic Sector Focusing on Waste Heat Recovery," Energies, MDPI, vol. 13(22), pages 1-24, November.
    4. A.M. Vasconcelos da Silva & J.M.P.Q. Delgado & A.S. Guimarães & W.M.P. Barbosa de Lima & R. Soares Gomez & R. Pereira de Farias & E. Santana de Lima & A.G. Barbosa de Lima, 2020. "Industrial Ceramic Blocks for Buildings: Clay Characterization and Drying Experimental Study," Energies, MDPI, vol. 13(11), pages 1-22, June.

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