abbas mohammed, Abdullah HK. Experimental study of natural heat transfer from finned heat exchanger fixed in variable shape of duct: Experimental study of natural heat transfer from finned heat exchanger fixed in variable shape of duct. WJES [Internet]. 2023 Apr. 1 [cited 2026 May 1];11(1):29-44. Available from: https://ejuow.uowasit.edu.iq/index.php/ejuow/article/view/357