Journal ArticleDOI
Radiative cooling with selectively infrared‐emitting ammonia gas
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TLDR
In this article, spectral measurements for NH3 gas layers are reported, and the potential use of this substance in radiative cooling devices is evaluated; the basic cooling parameters and the radiated power versus temperature drop are computed: the cooling power at near ambient temperature can be exceptionally large.Abstract:
Spectrophotometric measurements are reported for NH3 gas layers, and the potential use of this substance in radiative cooling devices is evaluated. The basic cooling parameters and the radiated power versus temperature drop are computed: the cooling power at near‐ambient temperature can be exceptionally large. The radiative properties are discussed from the configuration of the NH3 molecule. Typically a 2‐cm‐thick NH3 gas slab can provide 26 Wm−2 useful cooling power at 15 °C below ambient temperature in a device with a moderate nonradiative loss (heat transfer coefficient of 1 Wm−2 K−1).read more
Citations
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Transparent conductors as solar energy materials: A panoramic review
TL;DR: Transparent conductors (TCs) have a multitude of applications for solar energy utilization and for energy savings, especially in buildings as discussed by the authors, which leads naturally to considerations of spectral selectivity, angular selectivity, and temporal variability of TCs, as covered in three subsequent sections.
Journal ArticleDOI
Radiative cooling: A review of fundamentals, materials, applications, and prospects
TL;DR: In this article, the current state of the art in passive radiative cooling technology is reviewed and updated, and the advanced materials and structures of various radiators, which are popular topics in radiative heating, are presented.
Journal ArticleDOI
Radiative sky cooling: Fundamental principles, materials, and applications
Dongliang Zhao,Dongliang Zhao,Ablimit Aili,Yao Zhai,Shaoyu Xu,Gang Tan,Xiaobo Yin,Ronggui Yang +7 more
TL;DR: In this paper, the fundamental principles of radiative sky cooling as well as the recent advances, from both materials and systems point of view, are reviewed with special attention to technology viability and benefits.
Journal ArticleDOI
Radiative Heat Pumping from the Earth Using Surface Phonon Resonant Nanoparticles
Angus Gentle,Geoffrey Smith +1 more
TL;DR: A mixture of SiC and SiO(2) nanoparticles yields high performance cooling at low cost within a practical cooling rig and optical properties are presented and subambient cooling performance analyzed for doped polyethylene on aluminum.
Journal ArticleDOI
Nanoparticle embedded double-layer coating for daytime radiative cooling
TL;DR: In this article, a double-layer acrylic resin with nanoparticles for both nighttime and daytime radiative cooling is proposed, where the top and bottom layers are acrylic resin embedded with titanium dioxide and carbon black particles, respectively responsible for reflecting the solar irradiation and emitting the heat in the atmospheric transparency window.
References
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Book
Principles of Optics
TL;DR: In this paper, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
Principles of Optics
TL;DR: In this article, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
ReportDOI
Atmospheric transmittance/radiance: Computer code LOWTRAN 5
TL;DR: In this paper, a computer code for predicting atmospheric transmittance and the thermal radiation emitted by the atmosphere and earth from 350 to 40,000 per cm at a spectral resolution of 20 per cm is described.
Journal ArticleDOI
Radiative cooling to low temperatures: General considerations and application to selectively emitting SiO films
C. G. Granqvist,A. Hjortsberg +1 more
TL;DR: In this paper, the spectral radiative properties of a SiO-coated Al plate placed under transparent polyethylene films in a polystyrene box were determined by a novel and accurate technique.
Journal ArticleDOI
The radiative cooling of selective surfaces
TL;DR: In this paper, a selective surface with optical properties matched to the atmospheric window 8-13 μm was realized for cooling by exposition to the clear sky: in particular, a cooling effect was obtained also during the day.
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Radiative cooling to low temperatures: General considerations and application to selectively emitting SiO films
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