HUTAGALUNG, L. A. Three Concentric Tube Heat Exchange With NTU-Effective Method . Journal Basic Science and Technology, [S. l.], v. 10, n. 3, p. 99-104, 2022. DOI: 10.35335/jbst.v10i3.1761. Disponível em: http://ejournal.iocscience.org/index.php/JBST/article/view/1761. Acesso em: 18 sep. 2026.