Enhanced passive radiative cooling coating with Y2O3 for thermal management of building

Optical Materials, Journal Year: 2023, Volume and Issue: 138, P. 113710 - 113710

Published: March 31, 2023

Language: Английский

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Solar transparent and thermally insulated silica aerogel for efficiency improvement of photovoltaic/thermal collectors

Carbon Neutrality, Journal Year: 2023, Volume and Issue: 2(1)

Published: March 10, 2023

Abstract Photovoltaic/thermal (PV/T) utilization has been regarded as a promising technique to efficiently harvest solar energy, but its thermal efficiency highly degrades in cold seasons because of remarkable heat loss. Although various methods, such using air or vacuum gap, have used reduce loss the PV/T, radiative still exists. In addition, unlike selective absorbers, current PV/T absorber behaves like an infrared blackbody, showing great To overcome this drawback, novel aerogel (referred “A-PV/T” hereinafter) collector based on transparent and thermally insulated silica is proposed, which can from both non-radiative transfer modes. Experimental testing demonstrates that improvement 25.1%-348% be achieved for within collecting temperature range 35–70 °C when introduced, indicating significant enhancement. Compared with traditional “T-PV/T” collector, stagnation temperatures A-PV/T are 96.7 103.1 outdoor indoor environments, 27.4 25.8 greater, respectively, suppression aerogel. Moreover, simulation reveals useful hardly provided by T-PV/T seasons, exists high performance, good seasonal regional applicability.

Language: Английский

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Performance analysis of a broadband selective absorber/emitter for hybrid utilization of solar thermal and radiative cooling

Renewable Energy, Journal Year: 2023, Volume and Issue: 205, P. 763 - 771

Published: Feb. 1, 2023

Language: Английский

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Superhydrophobic bilayer coating for passive daytime radiative cooling

Nanophotonics, Journal Year: 2023, Volume and Issue: 13(5), P. 583 - 591

Published: Oct. 18, 2023

Passive radiative cooling is an energy-free method by exchanging thermal radiation with the cold universe through transparent atmospheric window. Spectrum tailoring of cooler key to daytime in previously reported works. In addition, coolers large-scale fabrication and self-cleaning characteristics should be further developed improve their industrial applicability. Herein, we propose a bilayer coating superhydrophobic property scalable process, covering TiO

Language: Английский

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Photovoltaic passive cooling via water vapor sorption-evaporation by hydrogel

Applied Thermal Engineering, Journal Year: 2023, Volume and Issue: 240, P. 122185 - 122185

Published: Dec. 9, 2023

Language: Английский

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Transparent radiative cooling cover window for flexible and foldable electronic displays

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: May 24, 2024

Abstract Transparent radiative cooling holds the promise to efficiently manage thermal conditions in various electronic devices without additional energy consumption. Radiative cover windows designed for foldable and flexible displays could enhance capacities ubiquitous deployment of electronics outdoor environments. However, previous demonstrations have not met optical, mechanical, moisture-impermeable criteria such windows. Herein, we report transparent metamaterials with a thickness 50 microns as window by rational design synthesis embedding optically-modulating microstructures clear polyimide. The resulting outcome only includes excellent light emission atmospheric under secured optical transparency but also provides enhanced mechanical properties surpass demands target applications. Our substantially mitigate temperature rise heat-generating exposed solar irradiance management dark conditions. output performance light-emitting diodes on which are deployed is greatly suppressing deterioration associated thermalization.

Language: Английский

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Photonic Crystal Structures for Photovoltaic Applications

Materials, Journal Year: 2024, Volume and Issue: 17(5), P. 1196 - 1196

Published: March 4, 2024

Photonic crystals are artificial structures with a spatial periodicity of dielectric permittivity on the wavelength scale. This feature results in spectral region over which no light can propagate within such material, known as photonic band gap (PBG). It leads to unique interaction between and matter. A crystal redirect, concentrate, or even trap incident light. Different materials (dielectrics, semiconductors, metals, polymers, etc.) 1D, 2D, 3D architectures (layers, inverse opal, woodpile, enable great flexibility designing optical response material. opens an extensive range applications, including photovoltaics. be used anti-reflective light-trapping surfaces, back reflectors, spectrum splitters, absorption enhancers, radiation coolers, electron transport layers. paper presents overview developments trends for different photovoltaic applications.

Language: Английский

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Experimental and numerical investigation on energy-saving performance of radiative cooling coating for metal container office

Energy and Buildings, Journal Year: 2024, Volume and Issue: 310, P. 114084 - 114084

Published: March 15, 2024

Language: Английский

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Combined daytime radiative cooling and solar photovoltaic/thermal hybrid system for year-round energy saving in buildings

Energy, Journal Year: 2024, Volume and Issue: 304, P. 132178 - 132178

Published: June 25, 2024

Language: Английский

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Recent advancements in radiative cooling textiles for personal thermal management

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(25), P. 14866 - 14884

Published: Jan. 1, 2024

This review provides a comprehensive overview of radiative cooling textiles from fundamentals, advanced structures and construction strategies to emerging applications.

Language: Английский

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