Drying Process Modelling for Heavy Clay Products Using a New Thin Layer Drying Model

Abstract:

Drying results, determined on samples made of masonry clay from the locality "Banatski Karlovac", are presented in this study. Experimental investigations were carried out in a laboratory recirculation dryer in which drying parameters (humidity, temperature, and velocity) could be programmed, controlled and monitored during drying process. Several mathematical models were used for drying process modelling. New semi-theoretical thin layer drying model, for heavy clay products, was developed and presented in this study. It represents a modification of Page's and logarithm's thin layer drying models. Results presented in this study have shown that new thin layer drying model describes and correlates the best experimentally determined drying process.

• Periodical: Applied Mechanics and Materials (Volume 371)
• Pages: 323-327
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.371.323
• Online since: August 2013
• Authors: Miloš Vasić, Zagorka Radojević
• Keywords: Drying Process, Heavy Clay Products, Hot Air Convective Drying, Mathematical Modeling, Thin Layer Drying Models

References

[1] E. Ash, E. Baumer, P. Bekker, and others, Brick and Tile Making – Procedures and Operating Practice in the Heavy Clay Industries, Editors W. Bender, and F. Handle., Berlin (1982).

[2] Minitab for windows, available at: http: /www. minitab. com and accessed 15. 02. (2013).

[3] Curve Fitter Version 4. 5, available at: http: /www. math-solutions. org and accessed 15. 02. (2013).

[4] Data Master Version 11. 8. 0. 365, available at: http: /www. datamaster2003. com and accessed 10. 03. (2013).

[5] W. Coumans, Models for drying kinetic based on drying curves of slabs, Chemical Engineering and Process 39 (2000) 53-68.

DOI: 10.1016/s0255-2701(99)00084-7

[6] D. Skansi, S. Tomas, M. Sokole, Convection drying of porous material, Ceramic International 20 (1994) 9-16.

DOI: 10.1016/0272-8842(94)90003-5

[7] J. Cranck, The mathematics of diffusion, (II edition), Oxford University press, London, (1975).

[8] S. Chemkhi, F. Zagrouba, Water diffusion coefficient in clay material from drying data, Desalination 85 (2005) 491-498.

DOI: 10.1016/j.desal.2005.04.052

[9] S. Erenturk, M. Gulaboglu, S. Gultekin, Experimental determination of effective moisture diffusivities of whole – and cut – rosehips in convective drying, Food and bioproducts processing (2010).

DOI: 10.1016/j.fbp.2010.01.007

[10] I. Doymaz, Convective air drying of thin layer carrots, Journal of food engineering 61 (2004) 359-364.

DOI: 10.1016/s0260-8774(03)00142-0

[11] J. O'Callaghan, D. Menzies, P. Bailey, Digital simulation of agricultural dryer performance, Journal of Agricultural Engineering Research 16 (1971) 223–244.

DOI: 10.1016/s0021-8634(71)80016-1

[12] L. Diamante, P. Munro, Mathematical modelling of the thin layer solar drying of sweet potato slices, Solar Energy 51 (1993) 111-117.

DOI: 10.1016/0038-092x(93)90122-5

[13] I. L. Pardeshi, S. Arora, P.A. Borker, Thin-layer drying of green peas and selection of suitable thin-layer drying model, Drying Technology 27 (2009) 288-295.

DOI: 10.1080/07373930802606451

[14] C.Y. Wang, R.P. Singh, Use of variable equilibrium moisture content in modelling rice drying, ASAE Meeting paper No. 78-6505, St. Joseph, MI, ASAE. (1978).

[15] G. Efremov, T. Kudra, Model-Based Estimate for time – dependent Apparent Diffusivity, Drying Technology 23 (2005) 2513-2522.

DOI: 10.1080/07373930500340387

[16] K. M. Kudru, R. Das, A.B. Datta, P.K. Chatterjee, On the Analysis of Drying Process, Drying Technology 23 (2005) 1093-1105.

DOI: 10.1081/drt-200059140