Heat Loss Analysis of Continuous Drying Oven with Outside Conveyor Chain

  • Weerayut Jitwiriya Department of Mechanical and Aerospace Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand
  • Tonkid Chantrasmi Department of Mechanical and Aerospace Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand
  • Udomkiat Nontakaew Department of Mechanical and Aerospace Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand
  • Pisit Yongyingsakthavorn Department of Mechanical and Aerospace Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand
Keywords: Drying oven, Energy analysis, Finite difference method

Abstract

In continuous manufacturing lines, conveyor chains are employed to transport future products in and out of these ovens in various processes of the production. As such, the typically metal conveyor system creates a significant heat loss by absorbing the thermal energy from inside the oven and releasing it outside. This work analyzed heat transfer of a novel drying oven design with their conveyor chains outside of the heated zone. The problem was complex due to multiple modes of heat transfer and an intermediate area between the heated zone and the outside chain. A mathematical model was proposed along with a numerical solution approach based on Finite Difference Method (FDM). Using problem parameters from a real latex-gloves production line as an example, it was found that the new design could reduce the heat loss by 23.1% when replacing all conventional ovens with the new designs.

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References

[1] T. Defraeye, “Advanced computational modelling for drying processes – A review,” Applied Energy, vol. 131, no. 3, pp. 323–344, Jul. 2014.

[2] W. Jitwiriya, T. Chantrasmi, P. Yongyingsakthavorn, and U. Nontakaew, “Energy minimizing analysis for continuous drying ovens in a latex-glove production line with humidity,” in International Conference on Engineering Science and Innovative Technology, 2016, pp. 372–379.

[3] C. Rattanapan, T. T. Suksaroj, and W. Ounsaneha, “Development of eco-efficiency indicators for rubber glove production by material flow analysis,” Procedia – Social and Behavioral Sciences, vol. 40, pp. 99–106, Mar. 2012.

[4] A. K. Haghi, “A mathematical model of the drying process,” Acta Polytechnica, vol. 41, no. 3, pp. 20–23, Jan. 2001.

[5] Z. Wang, J. Sun, X. Liao, F. Chen, G. Zhao, J. Wu, and X Hu, “Mathematical modeling on hot air drying of thin layer apple pomace,” Food Research International, vol. 40, pp. 39–46, Jan. 2007.

[6] A. M. Castro, E. Y. Mayorga, and F. L. Moreno, “Mathematical modelling of convective drying of fruits: A review,” Journal of Food Engineering, vol. 223, pp. 152–167, Apr. 2018.

[7] C. Lamnatou, E. Papanicolaou, V. Belessiotis, and N. Kyriakis, “Finite-volume modelling of heat and mass transfer during convective drying of porous bodies – Non-conjugate and conjugate formulations involving the aerodynamic effect,” Renewable Energy, vol. 35, pp. 1391–1402, Jul. 2010.

[8] F. A. Khan and A. G. Straatman, “A conjugate fluid-porous approach to convective heat and mass transfer with application to produce drying,” Journal of Food Engineering, vol. 179, pp. 55– 67, Jun. 2016.
[9] T. Defraeye, B. Blocken, and J. Carmeliet, “Analysis of convective heat and mass transfer coefficient for convective drying of a porous flat plate by conjugate modelling,” International Journal of Heat and Mass Transfer, vol. 55, pp. 112–124, Jan. 2012.

[10] T. Defraeye and A. Radu, “Convective drying of fruit: A deeper look at the air-material interface by conjugate modeling,” International Journal of Heat and Mass Transfer, vol. 108, pp. 1620– 1622, May. 2017.
[11] A. Dorfman and Z. Renner, “Conjugate problems in convective heat transfer: Review,” Hindawi Publishing Corporation Mathematical Problems in Engineering, vol. 2009, pp. 1–27, 2009.

[12] G. Fedorko, V. Molnar, M. Dovica, T. Toth, and M. Kopas, “Analysis of pipe conveyor belt damaged by thermal wear,” Engineering Failure Analysis, vol. 45, pp. 41–48, Oct. 2014.

[13] N. E. Elzayady, R. M. Rashad, M. Elgamil, and M. A. Elhabak, “Design and manufacturing of thermal cyclic fatigue apparatus,” Journal of American Science, vol. 8, pp. 600–606, Aug. 2012.

[14] P. Yongyingsakthavorn, T. Chantrasmi, T. Sriyubol, P. Nimdum, A. Tohsan, and U. Nontakaew, “Innovative design of latex gloves production lines via modular industrial-sized prototypes,” in IOP Conference Series: Materials Science and Engineering, 2019, vol. 526, no. 1, pp. 1–4.

[15] W. Jitwiriya, T. Chantrasmi, P. Yongyingsakthavorn, and U. Nontakaew, “Design and energy analysis of the prototype drying oven for rubber gloves production process,” in International Conference on Engineering Science and Innovative Technology, 2018, pp. 533–540.
Published
2021-07-13
Section
Research Articles