Thin-Layer Drying of Burdock Root in a Convective Dryer: Drying Kinetics and Numerical Simulation

Authors

  • Luan Thanh Nguyen Faculty of Vehicle and Energy Engineering, Ho Chi Minh City University of Technology and Education (HCMUTE), Vietnam
  • Minh Ha Nguyen Faculty of Mechanical Engineering, University of Transport and Communications, Hanoi, Vietnam
  • Hong Son Nguyen Le Faculty of Vehicle and Energy Engineering, Ho Chi Minh City University of Technology and Education (HCMUTE), Vietnam

DOI:

https://doi.org/10.37934/arfmts.104.1.2136

Keywords:

Burdock root (Arctium lappa), thin-layer drying, convective dryer, moisture diffusivity coefficient, moisture transfer coefficient, numerical simulation, drying kinetics

Abstract

This work investigated the thin-layer drying kinetics of Vietnam burdock root in a convective dryer. The thin-layer drying models and mass transfer coefficient were determined by experiment and analysis approach. Furthermore, a numerical simulation was performed to describe the moisture distribution inside the material. The regression models and mathematical equations were determined by Statgraphics software and the EES software. The survey range in this work: 50-70oC air temperature, 1-2 m/s air velocity, 22 ± 5 mm slice diameter, and 5 ± 0.2 mm slice thickness. The results show that the Page model was the best model to describe the drying behavior of burdock root, with the correlation coefficient of R2 > 0.9992; the moisture diffusivity coefficient De = 3.4520 x 10-9-1.8516 x 10-8 m2/s; moisture transfer coefficient hm = 1.3256 x 10-7-7.8375 x 10-7 m/s. Furthermore, the simulation results visualize the moisture distribution inside the burdock root slice in the drying process.

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Author Biographies

Luan Thanh Nguyen, Faculty of Vehicle and Energy Engineering, Ho Chi Minh City University of Technology and Education (HCMUTE), Vietnam

luannt@hcmute.edu.vn

Minh Ha Nguyen, Faculty of Mechanical Engineering, University of Transport and Communications, Hanoi, Vietnam

hanm_ph@utc.edu.vn

Hong Son Nguyen Le, Faculty of Vehicle and Energy Engineering, Ho Chi Minh City University of Technology and Education (HCMUTE), Vietnam

sonnlh@hcmute.edu.vn

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Published

2023-04-03

How to Cite

Luan Thanh Nguyen, Nguyen, M. H. ., & Nguyen Le, H. S. . (2023). Thin-Layer Drying of Burdock Root in a Convective Dryer: Drying Kinetics and Numerical Simulation. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 104(1), 21–36. https://doi.org/10.37934/arfmts.104.1.2136

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