Experimental investigations on the thermal efficiency of a solar air collector with transverse rectangular baffles inclined by an angle of 135°  

作　　者：Foued Chabane Zouhair Aouissi 

机构地区：[1]Department of Mechanical Engineering,University of Biskra,Biskra,Algeria [2]Laboratoire de GénieMécanique(LGM),Faculty of Technology,University of Biskra,07000,Algeria

出　　处：《Energy and Built Environment》2024年第4期544-555,共12页能源与人工环境（英文）

摘　　要：This work is experimental investigation on the impact of rectangular baffles on the thermo-hydraulic performance of a solar thermal collector.The study was conducted under moderate weather conditions and six cases were studied,including 2M135,6M135,10M135,14M135,18M135,and a smooth plate case.The results showed that the number and placement of baffles plays a crucial role in improving heat transfer and the best cases in terms of thermal performance were cases V and IV,with maximum values of h=15.84 W/m2.k,and h=17.46 W/m2k.The study also found that the heat transfer was greatest at the beginning of the channel and decreased towards the end.The highest thermal efficiency was recorded in case 18M135 with a maximum value ofȠ=0.73.

关 键 词：Baffles Heat transfer Nusselt number Solar thermal collector Thermo-hydraulic performance 

分 类 号：TK513[动力工程及工程热物理—热能工程]