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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Journal ArticleDOI
Expanding the horizon of automated metamaterials discovery via quantum annealing
Koki Kitai,Jiang Guo,Shenghong Ju,Shenghong Ju,Shu Tanaka,Koji Tsuda,Koji Tsuda,Junichiro Shiomi,Junichiro Shiomi,Ryo Tamura,Ryo Tamura +10 more
TL;DR: In this article, a proof-of-principle study on designing complex thermofunctional metamaterials consisting of SiO2, SiC, and Poly(methyl methacrylate) was conducted.
Journal ArticleDOI
Environmental design solutions for existing concrete flat roofs in low-cost housing to improve passive cooling in western Mexico
TL;DR: In this paper, the design of a passive cooling strategy was tested to assess its effectiveness to protect flat roofs from short-wave radiation and to allow for heat dissipation in Mexican buildings, and the results showed that a perforated device with an opening percentage of 88% and a cavity of 0.05m between the roof and the device provided effective protection.
Journal ArticleDOI
Directional radiation for optimal radiative cooling
Suwan Jeon,Jonghwa Shin +1 more
TL;DR: In this article, the authors quantitatively illustrate that significant net radiative absorption at high zenith angles limits the performance of such isotropic emitters, and demonstrate that simply cutting off components corresponding to high angles can substantially improve the cooling performance of commonly used isotropics.
Proceedings ArticleDOI
Nighttime Electric Power Generation at a Density of 50 mW/m2 via Radiative Cooling of a Photovoltaic Cell
TL;DR: In this paper , a photovoltaic cell is used to harvest nighttime electricity from the radiative cooling of a PV cell, achieving 50 mW/m2 with a clear night sky.
Journal ArticleDOI
Thermal Performance of Novel Multilayer Cool Coatings for Asphalt Pavements.
Yujing Chen,Kui Hu,Shihao Cao +2 more
TL;DR: A three-layer cool coating is used to experimentally investigate the effects of the reflective layer, the emissive layer, and the thermal insulation layer on the cooling effect using a self-developed cooling effect evaluation device (CEED).
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.
Journal ArticleDOI
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.