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Recent Progress in Daytime Radiative Cooling: Is It the Air Conditioner of the Future?
Open accessAbstract
Radiative cooling is a well-researched area. For many years, surfaces relying on radiative cooling failed to exhibit a sub-ambient surface temperature under the sun because of the limited reflectance in the solar spectrum and the reduced absorptivity in the atmospheric window. The recent impressive developments in photonic nanoscience permitted to produce photonic structures exhibiting surface temperatures much below the ambient temperature. This paper aims to present and analyze the main recent achievements concerning daytime radiative cooling technologies. While the conventional radiative systems are briefly presented, the emphasis is given on the various photonic radiative structures and mainly the planar thin film radiators, metamaterials, 2 and 3D photonic structures, polymeric photonic technologies, and passive radiators under the form of a paint. The composition of each structure, as well as its experimental or simulated thermal performance, is reported in detail. The main limitations and constraints of the photonic radiative systems, the proposed technological solutions, and the prospects are presented and discussed.
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“However, buildings can also make use of roof ponds, movable insulation systems, radiators, or existing solar heating systems integrated as passive or active systems (with or without pumps and fans) that extract the heat from the indoor environment and release it to the sky [92,226,228].”
From Resilient cooling strategies – A critical review and qualitative assessment (2021) · cites this paper as [92]
In the citing paper
“However, recent progress in solar reflective materials with high emissivity in the atmospheric window may further enhance the sky radiative cooling's restorative capacity as cooling could be achieved concurrently with the demand, i.e. during the day [92,228].”
From Resilient cooling strategies – A critical review and qualitative assessment (2021) · cites this paper as [92]
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Metadata
- Authors
- Santamouris, M., & Feng, J.
- Affiliations
- UNSW Sydney (AU)
- Corresponding author
- Santamouris, Mattheos
- Venue
- Buildings
- Publisher
- MDPI AG
- Published
- 2018-11-30
- Volume
- 8
- Issue
- 12
- Pages
- 168
- ISSN
- 2075-5309 (ISSN-L)
- OpenAlex
- W2903034540
- Cited by
- 167
- References
- 91
- Citations by year
- 2026: 12 · 2025: 14 · 2024: 27 · 2023: 32 · 2022: 24 · 2021: 28 · 2020: 22 · 2019: 8
- FWCI
- 13.04
- Type
- journal article
- Language
- en
- Open access
- gold
- dx.doi.org
- Licence
- Locations
- Buildings (publishedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Physical Sciences › Engineering › Civil and Structural Engineering › Thermal Radiation and Cooling Technologies
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
- Physical Sciences › Materials Science › Materials Chemistry › Thermal properties of materials
- Keywords
- radiative cooling, daytime cooling, photonic structures, metamaterials, atmospheric window, solar reflectance, passive radiators, air conditioning
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