Study of the Influence of the Characteristic’s Fin on thePerformance of a Collector with Finned Absorber of anIndirect Solar Dryer

Abstract

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.