Numerical Study of Triple Pipe Heat Exchanger Using Copper, Steel, and Aluminium of Varying Thicknesses. Libyan Open University Journal of Applied Sciences (LOUJAS), [S. l.], v. 2, n. 1, p. 127–136, 2026. DOI: 10.65422/loujas.v2i1.192. Disponível em: https://oujournals.ly/index.php/LOUJAS/article/view/192. Acesso em: 21 mar. 2026.