Effect of square and perforated fins on improving the efficiency of the classic pyramidal solar still. NTU Journal of Renewable Energy, [S. l.], v. 6, n. 1, p. 68–77, 2024. DOI: 10.56286/4988k764. Disponível em: https://journals.ntu.edu.iq/index.php/NTU-JRE/article/view/942.. Acesso em: 28 may. 2025.