Modeling of coupled heat and mass transfer during drying of tropical woods

Published Date
International Journal of Thermal Sciences
November 2016, Vol.109:299–308, doi:10.1016/j.ijthermalsci.2016.06.012

• Author 

• Merlin Simo-Tagne ^a,,
• Romain Rémond ^b
• Yann Rogaume ^b
• André Zoulalian ^c
• Beguide Bonoma ^d

• aLERMaB, ENSTIB, 27 rue Philippe Séguin, PO Box 1041, F-88051 Epinal, France
• bUniversity of Lorraine, LERMaB, ENSTIB, 27 rue Philippe Séguin, PO Box 1041, F-88051 Epinal, France
• cUniversity of Lorraine, LERMaB, PO Box 239–54560, Vandoeuvre les Nancy, Nancy, France
• dUniversity of Yaoundé I, Higher Teacher Training College, Applied Physic Laboratory, PO Box 47, Yaoundé, Cameroon

Received 14 May 2015. Revised 3 June 2016. Accepted 5 June 2016. Available online 17 June 2016.

Highlights

• •
  Modeling of heat and mass transfer during the drying of tropical woods are proposed.
• •
  Using Fortran 77 language, numerical results are generated.
• •
  Results obtained are compared by these given by Luikov’s model and experiment in constant and variable air characteristics phase.
• •
  Thermophysical coefficients of our model can be easily determined experimentally.
• •
  Numerical simulations obtained give close agreement with experimental results and those of Luikov’s model.

Abstract

We have developed a model on drying of two tropical woods of ayous (Triplochiton Scleroxylon) and frake (Terminalia Superba) coming from Cameroon forests. Some thermophysical parameters used in the model were experimentally obtained in this work while the remaining properties were from literature. A comparison is doing between numerical results of our model, these given by the Luikov’s model and experimental data. Numerical simulation results from the developed model give close agreement with experimental results. We note that Luikov’s model not gives a satisfaction results in the non-hygroscopic domain in the case of frake. The present model can be used to explain the drying phenomenon of these two tropical species and can be applied to others species when necessary thermophysical parameters of these species are known. In a future work, it is important to integrate the influence of anatomical direction on our numerical and experimental results.

Keywords

Drying

Heat and mass transfer

Modeling

Simulation

Experiment

Tropical woods

Central Africa

---

Fig. 1.

Fig. 2.

 Table 1

Table 1.

 Table 2

Table 2.

Fig. 3.

Fig. 4.

Fig. 5.

Fig. 6.

Fig. 7.

Fig. 8.

Fig. 9.

 Table 3

Table 3.

Fig. 10.

Fig. 11.

• ∗ 
  Corresponding author. Tel.: +33 613483787.
  
  

For further details log on website :
http://www.sciencedirect.com/science/article/pii/S1290072916307232