Mémoires de Fin d’Etudes
Etablissement
Université de Biskra - Mohamed Khider
Affiliation
Département de Génie Mécanique
Auteur
LABED, Adnane
Directeur de thèse
MOUMMI Noureddine (Professeur)
Co-directeur
BRIMA Abdelhafid (Maitre de conférence)
Filière
Mécanique
Diplôme
Doctorat
Titre
Contribution à l’étude des échanges convectifs en régime transitoire dans les Capteurs Solaires Plans à air ; Application au Séchage des produits agro-alimentaires
Mots clés
Contribution à l’étude des échanges convectifs -les Capteurs Solaires Plans à air ; Application au Séchage des produits agro-alimentaires
Résumé
Solar air heaters can be used for many applications at low and moderate temperatures. There are different factors affecting the solar air heater efficiency, e.g. collector length, collector depth, type of absorber plate, glass cover plate, wind speed, etc. In this work we present an extensive comparative study on the thermal performance of various design of: single pass types of solar air heaters, SAHs: i) without obstacles, ii) with rectangular obstacles and iii) with a new form of obstacles (trapezoidal form) in the air flow duct. Thus, we have proceeded to the comparison of the best system with iiii) and double pass flat plate collector having the same type of obstacles in order to determine the best performing model. A theoretical model was constructed for all types of collectors, taking into account the new parameter, called the artificial roughness. Thus, we have proceeded to the application of these systems for the drying of agro alimentary products. We have sought to determine the drying kinetic for the forced convection. The drying air was heated by solar energy under variable outdoor conditions.
Date de soutenance
19/09/2012
Cote
Thé/1464
Pagination
01
Illusatration
229
Format
4
Notes
Solar air heaters can be used for many applications at low and moderate temperatures. There are different factors affecting the solar air heater efficiency, e.g. collector length, collector depth, type of absorber plate, glass cover plate, wind speed,
Statut
Soutenue