Description of the Profile of Temperature in an Indirect Solar Dryer: Application in the Drying of the “Niebe”

Mamadou Seck Gueye(1*), Omar Ngor Thiam(2), Samba Dia(3), Joseph Sarr(4)

(1) Dakar University, Senegal
(2) Dakar University, Senegal
(3) Dakar University, Senegal
(4) Dakar University, Senegal
(*) Corresponding author

DOI's assignment:
the author of the article can submit here a request for assignment of a DOI number to this resource!
Cost of the service: euros 10,00 (for a DOI)


The aim of our study is to describe the distribution of air temperature and its effect upon a product to dry (e.g cowpeas), processing in the drying cabin. Indeed, the selected dryer operates in indirect mode. It is like an adiabatic cupboard in a vertical position with shelves that play a role of grid supporting the products to be dried. Thus, we have described a mathematical model which describes the simulation of the thermal variations in the drying room and the drying product itself by setting the temperature and the air rate entering the dryer. This model takes into account the character of the transfer air-product globally. The resulting equations are rescaled before being solved by the method of finite differences.

Copyright © 2014 Praise Worthy Prize - All rights reserved.


Forced Convection; Solar Energy; Indirect Drying; Dimensionless Equations; Finite Difference

Full Text:



NGAKOU A., Impact des biofertilisants (mycorizes , rhizobia) et du mycoinsecticide (Metarhizium anisopliae) sur le rendement du niébé (Vigna unguiculata) dans divers agro écosystèmes du Cameroon, Université de Ngaoundéré, Cameroun.

N. Benaouda, Benhamou.A, Biddari.A, Abdellaoui.M, , Belhamel.M Design, realization and experimentation of a drier with partially solar heating functioning in forced convection, Laboratorial of Thermals Centers Development of Renewable Energies Bouzaréah, Algiers.

B. Touati, Theoretical and Experimental study of the solar drying of the sheets of spearmint (Mentha viridis), Thesis Doctor of the INSA of Lyon, Specialty: Energy physics and Materials, October 2004.

A. Boulemtafes, D. Semmar. Design and Realization of an Indirect Solar Drier Thermal Center of Development of Renewable Energies Bouzaréah, Algiers, 1999.

JEAN-FRANÇOIS DAÏAN, Balance and Transfers in Porous environments, Lecturer Ex at the University voluntary Joseph Fourier Enquiring with the LTHE, January 2010.

B. Khiarin, S.B. Mabrouk and Sassi, Simulation of the Phenomena of Transfer in a Granular Medium Study of a Drier Tunnel, 2001.

S.E. Mokretar, R. Miri and Belhamel, study of the Assessment of Energy and Mass of a Drier of the Type Tighten, Applications to the Drying of the Agro-alimentary Products, rev. Energ. Ren. Vol. 7 (2004) 109-123.

A .Khouya, J. Benabdelouhab, A. Draoui, digital simulation of the thermal transfers in a solar system of wood seasoning, Laboratoire of Energetics – Equips with the Thermal Transfers and Energetics, Université Abdelmalek Essaâdi - Faculty of Science and Techniques of Tangier LP 416- Tangier – Morocco, August 2007.

Moussa KA., Modeling of a rotary drier for cereals coated by the method of the electric thermal – Analogies, Application to the " arraw ", 2004.

J.F. Sacadura, Initiation with the thermal transfers, Technique and documentation CAST. INSA of Lyon, 1978.

G. Arnaud and J.P. Fohr, 'Slow Drying Simulation in Thick Layers of Granular Products', Int. J. Heat Mass Transfer, 31 (12), pp. 2517-2526, 1988.

L Zili, ' Study of the Transfers of Heat and Mass in a Cylinder Filled with Grains Wet and Crossed by a Flow of Air', Report/ratio of DEA, ENIM, 1997.

B. Khiari , S. Ben Mabrouk , M. Sassi , Simulation of the Phenomena of Transfer in a Granular Medium Study of a Drier Tunnel, National institute of Scientific and Technical Research, Laboratory of the Solar Applications, B.P. 95, 2050 Hammam Lif, Tunisia National School Engineers, Lab. Study of the Thermal & Energy Systems, Road of Kairouan, 5000 Monastir, Tunisia,2001.

S. Youcef-Ali, & al., Numerical and experimental study in forced convection, International Journal of Energy Research,vol. 52, pp; 537-553.

Solar driers: theory and practical ;UNESCO, 1985.

BENAOUDA nour-eddine, BOULEMTAFES amel, BALHAMEL maïhouf , Study of the thermal and dynamic behavior of a solar drier , Laboratory of Thermics, Centers Development of Renewable Energies Road of the observatory LP 62 Bouzaréah-Algiers, 2005.

Eric Goncalvès -Numerical resolution, discretisation of the EDP and EDO, Institut national polytechnique of Grenoble, 2005.

Jean François SINI: MECANIQUE OF THE FLUIDS, pp 99, 2008.

SYS860_AO7 : Adimensional analysis of the Navier-Stokes equations.


  • There are currently no refbacks.

Please send any question about this web site to
Copyright © 2005-2019 Praise Worthy Prize