Modeling and numerical solutions of industrial drying

of the Iroko (clorophora exelsa) and Doussie (afzelia SPP)

 

L. Monkam1*, B. Bonoma2, D. Njomo3

1 Laboratoire d’Énergie, Institut Universitaire de Technologie, Université de Douala, B .P 8698 Douala Cameroun

2 Laboratoire de Physique Appliquée, École Normale Supérieure, Université de Yaoundé I, BP : 47 Yaoundé, Cameroun

3 Laboratoire d’Analyse des Technologies de l’Énergie et de l’Environnement,

Université de Yaoundé I, B.P 7268 Yaoundé Cameroun

Corresponding author address: BP 8698, Douala, Cameroun

* Corresponding author. E-mail: monkam@yahoo.com

Received: 19 April 2011; revised version accepted: 20 January2012

 

Abstract

     This study is concerned with the drying of a sample of a stack of tropical sawn wood placed in a conventional dryer; the stack is considered as a two-phase porous medium, with known inlet and outlet information of the drying chamber. The transfer equations are written, the method of resolution is indicated which permits the simulation of the behavior of the wood in the dryer under the influence of a certain number of parameters of the drying air and the dried product itself. On the other hand, the experimental procedure used in companies is put in placed and comparative studies between the results obtained experimentally and that obtained via numerical simulations for the moisture content (MC) are done through constructed curves. Values from the drying table of beech wood, established by professionals of the technical center of wood and furniture are fitted in the simulation program in order to compare the results in terms of drying duration and final moisture content . We treat the case of Iroko and Doussie which are species of the beech wood.

 

Keywords: Modeling; Simulation; Drying, porous media; Heat and mass transfers; Wood; Iroko; Doussie.

 


 

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