A thermally stable cooler for efficient passive radiative cooling throughout the day
Source abstract
Abstract
Abstract Passive radiative cooler can dissipate heat from the earth (25 °C ) to the outer space (−270 °C ) through the atmospheric transparent window (8–13 μm) by radiation, making the temperature of the cooler lower than that of ambient air. Here, we fabricated a passive radiative cooler that combined silica nanoparticles with anodic aluminum oxide (AAO) template by a simple dip-pulling method, in which the pores of AAO template were filled with silica nanoparticles. The cooler selectively radiates in the atmospheric window while has low absorptivity outside the atmospheric window. Without convection shields, the temperature of the cooler is significantly lower than that of the ambient air throughout the day. Furthermore, the cooler has excellent thermal stability. Even after 4 h of annealing at 600 °C , the passive radiative cooling performance of the cooler does not deteriorate.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Thermal Radiation and Cooling Technologies · Urban Heat Island Mitigation · Quantum Electrodynamics and Casimir Effect
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. Radiative cooling to deep sub-freezing temperatures through a 24-h day–night cycle10.1038/ncomms13729 ↗
2. Optimized thin film coatings for passive radiative cooling applications10.1016/j.optcom.2017.10.047 ↗
3. Passive cooling for air-conditioning energy savings with new radiative low-cost coatings10.1016/j.enbuild.2010.01.006 ↗
4. Polymeric mesh for durable infra-red transparent convection shields: applications in cool roofs and sky cooling10.1016/j.solmat.2013.03.001 ↗
5. Radiative cooling of selective surfaces10.1016/0038-092X(75)90062-6 ↗
6. Radiative cooling to low temperatures: general considerations and application to selectively emitting SiO films10.1063/1.329270 ↗
7. Radiative cooling efficiency of white pigmented paints10.1016/0038-092X(93)90108-Z ↗
8. Radiative heat pumping from the earth using surface phonon resonant nanoparticles10.1021/nl903271d ↗
9. Passive radiative cooling below ambient air temperature under direct sunlight10.1038/nature13883 ↗
10. Ultrabroadband photonic structures to achieve high-performance daytime radiative cooling10.1021/nl4004283 ↗
11. Daytime radiative cooling using near-black infrared emitters10.1021/acsphotonics.6b00991 ↗
12. Scalable-manufactured randomized glass-polymer hybrid metamaterial for daytime radiative cooling10.1126/science.aai7899 ↗
13. Hierarchically porous polymer coatings for highly efficient passive daytime radiative cooling10.1126/science.aat9513 ↗
14. Radiative cooling: principles, progress, and potentials10.1002/advs.201500360 ↗
15. A robust convection cover material for selective radiative cooling applications10.1016/j.solmat.2011.05.027 ↗
16. A review of clear sky radiative cooling developments and applications in renewable power systems and passive building cooling10.1016/j.solmat.2018.01.015 ↗
17. Double-layer nanoparticle-based coatings for efficient terrestrial radiative cooling10.1016/j.solmat.2017.04.020 ↗
18. Controlling the hydrophobicity of submicrometer silica spheres via surface modification for nanocomposite applications10.1021/la700386z ↗
19. Self-assembly of two- and three-dimensional particle arrays by manipulating the hydrophobicity of silica nanospheres10.1021/jp053692s ↗
20. Fabrication of two- and three-dimensional silica nanocolloidal particle arrays10.1021/jp0221800 ↗
21. Gold nanoparticle silica nanopeapods10.1021/ja411034q ↗
22. Assembly of colloidal nanoparticles into anodic aluminum oxide templates by dip-coating process10.1109/TNANO.2009.2023988 ↗
23. Observing capillarity in hydrophobic silica nanotubes10.1021/ja055535c ↗
24. Spectral radiance of sky and terrain at wavelengths between 1 and 20 microns. I.instrumentation10.1364/JOSA.50.001313 ↗
25. Su · 2009
26. The thermal radiance of clear skies10.1016/0038-092X(82)90245-6 ↗
27. Thermal performance of radiative cooling panels10.1016/S0017-9310(83)80111-2 ↗
28. Nanophotonics-enabled smart windows, buildings and wearables10.1515/nanoph-2016-0014 ↗
29. A metamaterial emitter for highly efficient radiative cooling10.1002/adom.201500119 ↗
30. Radiative heat pumping from the earth using surface phonon resonant nanoparticles10.1021/nl903271d ↗