Journal ArticleDOI
A review of clear sky radiative cooling developments and applications in renewable power systems and passive building cooling
TLDR
In this paper, a detailed literature survey of published studies on selective emitter structures for daytime and nighttime cooling purposes is presented and a detailed energy analysis is performed identifying key performance indicators and evaluating the cooling performance under various conditions.About:
This article is published in Solar Energy Materials and Solar Cells.The article was published on 2018-05-01. It has received 240 citations till now. The article focuses on the topics: Radiative cooling & Passive cooling.read more
Citations
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Characteristics analysis of the photovoltaic thermal heat pump system on refrigeration mode: An experimental investigation
TL;DR: In this paper, a dual-use photovoltaic thermal heat pump system was used and investigated experimentally with an emphasis on the refrigeration mode, which with the feature of the novel roll-bond photovoloftaic thermal unit working as condenser directly.
Journal ArticleDOI
Comprehensive evaluation of thermal and energy performance of radiative roof cooling in buildings
Jianheng Chen,Lin Lu +1 more
TL;DR: In this article, the authors established a radiative roof cooling performance model to conduct thorough parametric studies on pivotal factors governing achievable equilibrium temperature and net cooling power in building roofs, and developed a detailed building model integrated with radiative rooftop cooling considering typical climate regions in China.
Journal ArticleDOI
Daytime radiative cooling with clear epoxy resin
TL;DR: In this paper, a facile and cost-effective radiative cooling (RC) material was proposed to achieve daytime cooling performance, which achieved sub-ambient cooling performance even in high temperature and humidity areas.
Journal ArticleDOI
Flexible Daytime Radiative Cooling Enhanced by Enabling Three-Phase Composites with Scattering Interfaces between Silica Microspheres and Hierarchical Porous Coatings.
Hongchen Ma,Liang Wang,Shuliang Dou,Haipeng Zhao,Min Huang,Zewen Xu,Xinyuan Zhang,Xiudong Xu,Aiqin Zhang,Huiyu Yue,Ghulam Ali,Caihua Zhang,Caihua Zhang,Wen-Ying Zhou,Yao Li,Yaohui Zhan,Cheng Huang +16 more
TL;DR: In this paper, a three-phase self-assembled hybrid porous composite coating was proposed to increase the average solar reflectance and yield remarkable temperature drops of ∼10 and ∼ 30 °C compared to the ambient circumstance and black paint, respectively, according to the rooftop measurements.
Journal ArticleDOI
Mid-infrared adaptive thermal camouflage using a phase-change material coupled dielectric nanoantenna
TL;DR: In this paper, a PCM-dielectric-based metamaterial mid-infrared adaptive thermal camouflage nanoantenna is designed to perfectly mimic the atmospheric windows, and the adaptive property of the proposed structure is obtained by using an ultrathin VO2 interlayer embedded within the grating.
References
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Thermal radiation heat transfer
Robert Siegel,John R. Howell +1 more
TL;DR: In this article, a comprehensive discussion of heat transfer by thermal radiation is presented, including the radiative behavior of materials, radiation between surfaces, and gas radiation, and the use of the Monte Carlo technique in solving radiant exchange problems and problems of radiative transfer through absorbing-emitting media.
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Thermal Radiation Heat Transfer
Robert Siegel,John R. Howell +1 more
TL;DR: In this paper, a comprehensive discussion of heat transfer by thermal radiation is presented, including the radiative behavior of materials, radiation between surfaces, and gas radiation, and the use of the Monte Carlo technique in solving radiant exchange problems and problems of radiative transfer through absorbing-emitting media.
Journal ArticleDOI
Passive radiative cooling below ambient air temperature under direct sunlight
TL;DR: An integrated photonic solar reflector and thermal emitter consisting of seven layers of HfO2 and SiO2 that reflects 97 per cent of incident sunlight while emitting strongly and selectively in the atmospheric transparency window demonstrates that the cold darkness of the Universe can be used as a renewable thermodynamic resource, even during the hottest hours of the day.
Journal ArticleDOI
Taming the blackbody with infrared metamaterials as selective thermal emitters.
Xianliang Liu,Talmage Tyler,Tatiana Starr,Anthony F. Starr,Nan Marie Jokerst,Willie J. Padilla +5 more
TL;DR: This Letter demonstrates, for the first time, selective thermal emitters based on metamaterial perfect absorbers and finds that emissivity and absorptivity agree very well as predicted by Kirchhoff's law of thermal radiation.
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Scalable-manufactured randomized glass-polymer hybrid metamaterial for daytime radiative cooling
Yao Zhai,Yaoguang Ma,Sabrina N. David,Dongliang Zhao,Runnan Lou,Gang Tan,Ronggui Yang,Xiaobo Yin +7 more
TL;DR: A metamaterial composed of a polymer layer embedded with microspheres, backed with a thin layer of silver, which shows a noontime radiative cooling power of 93 watts per square meter under direct sunshine is constructed.