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    Area of Science:

    • Materials Science
    • Nanophotonics
    • Sustainable Building Technologies

    Background:

    • Conventional radiative coolers (RCs) are effective but limited to horizontal installations.
    • Their directional thermal emission restricts application on building facades.

    Purpose of the Study:

    • To propose and analyze an oblique radiation-angled photonic structure (ORAPS) for facade-integrated radiative cooling.
    • To enhance the applicability of radiative cooling technologies in urban environments.

    Main Methods:

    • Theoretical design principles for ORAPS.
    • Simulation-based analysis of cooling performance under various environmental conditions.

    Main Results:

    • ORAPS facilitates directed thermal emission towards outer space, avoiding adjacent structures.
    • The structure reflects incoming radiative heat perpendicularly to the panel surface.
    • Simulations confirm effective cooling performance across diverse environmental parameters.

    Conclusions:

    • ORAPS technology expands the application of radiative cooling to building facades.
    • This innovation is beneficial for thermoregulation in densely packed megacities and during winter.