Drying of Ceramic Bricks: Thermal and Mass Analysis via CFD

Abstract:

Several studies about drying of ceramic materials have been developed in many engineering and fabrication sectors. This process requires high investments and high energy consumption, resulting in high costs to the companies of this sector. In many situations, it is common the use of theoretical solutions that allow, with relative ease and low cost, to change the operational and geometrical conditions of the dryer or object of drying, to obtain the optimized operational conditions. In this sense, this work aims to predict the drying process of a ceramic brick in an oven using the computational fluid dynamics analysis. For a drying temperature of 80°C, the results of the drying and heating kinetics, and the moisture content and temperature distributions of the product and the air and the air velocity and pressure in the oven are shown and analyzed. A comparison between the predicted and experimental data of the average moisture content and temperature of the brick along the process was done and a good agreement was obtained.

• Periodical: Diffusion Foundations (Volume 25)
• Pages: 133-153
• DOI: https://doi.org/10.4028/www.scientific.net/DF.25.133
• Online since: January 2020
• Authors: R.S. Santos*, Severino Rodrigues de Farias Neto, A.G. Barbosa de Lima, J.B. Silva Júnior, Anderson Melchiades Vasconcelos da Silva
• Keywords: Ceramic Brick, Drying, Heat, Mass, Simulation

References

[1] J.B. Silva, Simulation and experimentation of the drying of hollow ceramic bricks. Doctoral Thesis in Process Engineering, Federal University of Campina Grande, Campina Grande, Brazil, 2009, 198 p. (In Portuguese).

DOI: 10.21475/ajcs.2016.10.10.p7455

[2] M.H.F Medeiros, D.J. Souza, J.H. Filho, C.S. Adorno, V.A. Quarcioni, E. Pereira, Red-clay waste and limestone filler added in Portland cement composite: effects on sulfate attack and alkali-silica reaction. Matéria, 21(2) (2016) 282 – 300.

[3] I.O. Martins, M.B. Quadri, V. P. Nicolau, F. Miotto, Simulation of the convective drying of a red clay brick. COBEQ - XXI Brazilian Congress of Chemical Engineering. Fortaleza, Brazil, 2016. 8p. (In Portuguese).

[4] J.B. Silva, Drying of industrial ceramic blocks: modeling, simulation and experimentation. Doctoral Thesis in Process Engineering, Federal University of Campina Grande, Campina Grande, Brazil, 2018. 187 p. (In Portuguese).

DOI: 10.21475/ajcs.2016.10.10.p7455

[5] J.J.S. Nascimento, F.A. Belo, A.G.B. Lima, Experimental Drying of Ceramics Bricks Including Shrinkage, Defect and Diffusion Forum, 365 (2015) 106-111.

DOI: 10.4028/www.scientific.net/ddf.365.106

[6] J.B. Silva, G.S. Almeida, W.C.P.B. Lima, G.A. Neves, A.G.B. Lima, Heat and mass diffusion including shrinkage and hygrothermal stress during drying of holed ceramics bricks, Defect and Diffusion Forum. 312-315 (2011) 971-976.

DOI: 10.4028/www.scientific.net/ddf.312-315.971

[7] G.S. Almeida, F.V.S. Tavares, W.M.P.B. Lima, A.G.B. Lima, Energetic and Exergetic Analysis of the Clay Bricks Drying in an Industrial Tunnel Dryer, Defect and Diffusion Forum, 369 (2016) 104-109.

DOI: 10.4028/www.scientific.net/ddf.369.104

[8] G.S. Almeida, J.B. Silva, C. J. Silva, R. Swarnakar, G.A.N. Neves, A.G.B. Lima, Heat and mass transport in an industrial tunnel dryer: Modeling and simulation applied to hollow bricks. Applied Thermal Engineering, 55 (2013) 78-86.

DOI: 10.1016/j.applthermaleng.2013.02.042

[9] W.P. Silva, C.M.D.P.S. Silva, L.D. Silva, V.S.O. Farias, Drying of clay slabs: Experimental determination and prediction by two-dimensional diffusion models. Ceram. Int. 39 (2013) 7911-7919.

DOI: 10.1016/j.ceramint.2013.03.053

[10] M.V. ARAÚJO, R.S. SANTOS, R.M. SILVA, J.B.S. NASCIMENTO, W.R.G. SANTOS, A.G.B. LIMA, Drying of Industrial Hollow Ceramic Brick: A Numerical Analysis Using CFD. Defect and Diffusion Forum, 391 (2019) 48-53.

DOI: 10.4028/www.scientific.net/ddf.391.48

[11] M.V. Araújo, R.S. Santos, R.M. Silva, A.G.B. Lima, Drying of Industrial Hollow Ceramic Brick: Analysis of the Moisture Content and Temperature Parameters. Defect and Diffusion Forum, 380 (2017) 72-78.

DOI: 10.4028/www.scientific.net/ddf.380.72

[12] Manual Ansys CFX 15.1, (2015).

[13] Y.A. Çengel, J.J. Ghajar, Heat and Mass Transfer: a practical approach. 4th edition –AMGH Editora Ltda. Porto Alegre, (2012).

[14] M.K.T. Brito, Theoretical Study of Heat and Mass Transfer on the Ceramic Bricks Drying with paralelepipedic shape. Master's dissertation in Mechanical Engineering, Federal University of Campina Grande, Campina Grande, Brazil, 2016. 111 p. (In Portuguese).

DOI: 10.21475/ajcs.2016.10.10.p7455