GHULAM RIDHA ALI, Ban; KHALEFA KADHIM , Zena. Analysis study of nano fluids and longitudinal fins on the heat transfer in the counter flow double pipe heat exchanger. Wasit Journal of Engineering Sciences, [S. l.], v. 10, n. 2, p. 44–56, 2022. DOI: 10.31185/ejuow.Vol10.Iss2.288. Disponível em: https://ejuow.uowasit.edu.iq/index.php/ejuow/article/view/288. Acesso em: 25 oct. 2025.