Design of Double‐Sided Optical Coatings for Space Cooling Through Vertical Windows
Passive radiative cooling is a promising energy‐saving strategy for space cooling. Dual‐sided thermal emitters offer efficient heat removal from enclosed spaces; however, existing studies predominantly focus on rooftop applications, with limited attention to vertical surfaces, such as walls and wind...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2025-06-01
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| Series: | Advanced Photonics Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/adpr.202400205 |
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| Summary: | Passive radiative cooling is a promising energy‐saving strategy for space cooling. Dual‐sided thermal emitters offer efficient heat removal from enclosed spaces; however, existing studies predominantly focus on rooftop applications, with limited attention to vertical surfaces, such as walls and windows. Here, a dual‐sided radiative cooling glass (DSRCG) tailored for vertical applications proposed, enhancing enclosure cooling. The DSRCG incorporates multilayer epsilon‐near‐zero materials, including Al2O3 and Si3N4, layered on a double‐sided indium‐tin‐oxide‐coated glass. The outward side of the DSRCG exhibits angular‐selective emission for efficient heat dissipation, while the inward side minimizes thermal radiation into enclosures. The visibly transparent layers enable a visible transmittance exceeding 72%. The simulation results demonstrate that the DSRCG reduces heat transfer to enclosures by 15 W m−2 compared with the conventional glass (C‐glass) at ambient temperatures above 30 °C. These findings highlight the DSRCG's potential as an energy‐saving window for reducing space‐cooling energy usage. |
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| ISSN: | 2699-9293 |