abbas, mohammed and Abdullah, H.K. 2023. 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. Wasit Journal of Engineering Sciences. 11, 1 (Apr. 2023), 29–44. DOI:https://doi.org/10.31185/ejuow.Vol11.Iss1.357.