The role of using nano-based thermal storage material filled into trapezoidal hang wick in a pyramid solar distiller is under study. The study underwent three stages of examination; after the material preparation. First. the pyramid distiller had a trapezoidal hang wick with pure phase change material (PCM) inside the cavity of the hang wick structure. https://www.inmuebleslasmercedes.com/product-category/dessert-cups/