In recent years, the sharp rise in energy consumption and the growing concern about climate change have increased the demand for innovative technologies that can accelerate the path towards a sustainable future. The goal of reaching a greener economy can only be achieved by re-designing most of the traditional technologies and industrial processes, with the purpose of mitigating their environmental impact. Cooling systems are one of these technologies. They are the only relief against unstoppable global warming, yet they are energy-intensive and contribute to air pollution generating a climate feedback loop. In this context, the thesis’ work aims to investigate an alternative and greener technique, i.e., daytime passive radiative cooling.