Al-Amiri, R. Y. .; Al-Akaishi , A. S. Evaluating the Thermal Performance of Solar Water Heating System Used Polypropylene Glycol With Al2O3 Nanoparticles in Different Concentrations As a Thermal Medium. Samarra J. Eng. Sci. Res. 2025, 2 (4), 78-94. https://doi.org/10.65115/41mw6a19.