Résumé:
In order to enhance the performance of an indirect solar dryer, it is crucial to improve the
poor heat transfer between the absorber plate and the inlet air in the air collector. This study
focuses on the impact of fins characteristics on the heat transfer process between the inlet air andthe finned absorber plate. By implanting fins onto the absorber plate, it is expected to optimize
the heat transfer efficiency and thereby enhance the overall performance of the solar dryer. The
present work aims to analyze various fin designs and their influence on the heat transfer
characteristics within the system, by change fin thickness (0.001,0.003,0.005 m), fin material
(M.S, AL, CU) and fin position in the air collector of indirect solar dryer, Where the air flowapplied in the study is the natural convection. A simulation work is conducted by using Fluent
6.2 and 19.2, to evaluate the thermal performance of different fin configurations, leading to
valuable insights for the enhancement of indirect solar dryers. In the results, we found that thereis a clear effect when adding fins average 3 % higher than without fins. Air collector with 0.001fin thickness is approximately 0.299% And 0.799% higher than with 0.003 and 0.005 finthickness respectively. And for the fin position there an effect too. And all of this is shown in the
last chapter. So from this thesis we conclude that the fins increase the heat exchange area and thefluid homogeneity.
