Improving the Productivity of a Double Slope Solar Still by Integrating a PMMA Fresnel Lens: Experimental Approach. International Research Journal on Advanced Engineering Hub (IRJAEH), [S. l.], v. 3, n. 06, p. 2779–2790, 2025. DOI: 10.47392/IRJAEH.2025.0410. Disponível em: https://irjaeh.com/index.php/journal/article/view/922.. Acesso em: 23 jun. 2025.