Integration of daytime radiative cooling and solar heating

Li, Xiuqiang; Shao, Sujin; Huang, Minsheng; Zhang, Shuyuan; Guo, Wei

doi:10.1016/j.isci.2022.105894

Cited by 9 publications

(3 citation statements)

References 48 publications

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“…Some efforts have been devoted to dynamic thermal management to reduce HVAC energy consumption throughout the year. [46][47][48][49][50][51][52][53][54][55][56] A temperature-adaptive coating with tunable heat radiation ability has been designed and prepared, showing distinct advantages in energy savings for most US cities compared to current roof coating materials. [57] It is a pity that self-heating in cold environments via a low emissivity surface cannot be achieved because of its inability to regulate solar reflectivity and fully utilize the heat from solar irradiance.…”

Section: Introductionmentioning

confidence: 99%

Annual Energy‐Saving Smart Windows with Actively Controllable Passive Radiative Cooling and Multimode Heating Regulation

Deng,

Yang,

Xiao

et al. 2024

Advanced Materials

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Smart windows with radiative heat management capability using the sun and outer space as zero‐energy thermodynamic resources have gained prominence, demonstrating a minimum carbon footprint. However, realizing on‐demand thermal management throughout all seasons while reducing fossil energy consumption remains a formidable challenge. Herein, an energy‐efficient smart window that enables actively tunable passive radiative cooling (PRC) and multimode heating regulation is demonstrated by integrating the emission‐enhanced polymer‐dispersed liquid crystal (SiO2@PRC PDLC) film and a low‐emission layer deposited with carbon nanotubes. Specifically, this device can achieve a temperature close to the chamber interior ambient under solar irradiance of 700 W m−2, as well as a temperature drop of 2.3 °C at sunlight of 500 W m−2, whose multistage PRC efficiency can be rapidly adjusted by a moderate voltage. Meanwhile, synchronous cooperation of passive radiative heating, solar heating, and electric heating endows this smart window with the capability to handle complicated heating situations during cold weather. Energy simulation reveals the substantial superiority of this device in energy savings compared with single‐layer SiO2@PRC PDLC, normal glass, and commercial low‐E glass when applied in different climate zones. This work provides a feasible pathway for year‐round thermal management, presenting a huge potential in energy‐saving applications.This article is protected by copyright. All rights reserved

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Section: Introductionmentioning

confidence: 99%

Annual Energy‐Saving Smart Windows with Actively Controllable Passive Radiative Cooling and Multimode Heating Regulation

Deng,

Yang,

Xiao

et al. 2024

Advanced Materials

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“…These materials are intended for the modulation of thermal infrared emissivity or autonomous switching between reflecting solar energy and allowing light transmission/absorption. [53,54] Despite the progress achieved in relation to these materials, there are still bottlenecks that hinder their large-scale application. For instance, VO 2 -based coatings require intricate optical resonant structures for emissivity tuning, while germanium-antimonytellurides and perovskites are constrained by costly production and immutable phase transition points.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Superhydrophobic All‐In‐One Coating for Adaptive Thermoregulation

Liu,

Wu,

Xue

et al. 2024

Advanced Materials

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The development of scalable and passive coatings that can adapt to seasonal temperature changes while maintaining superhydrophobic self‐cleaning functions is crucial for their practical applications. However, the incorporation of passive cooling and heating functions with conflicting optical properties in a superhydrophobic coating is still challenging. Herein, an all‐in‐one coating inspired by the hierarchical structure of a lotus leaf that combines surface wettability, optical structure, and temperature self‐adaptation is obtained through a simple one‐step phase separation process. This coating exhibits an asymmetrical gradient structure with surface‐embedded hydrophobic SiO2 particles and subsurface thermochromic microcapsules within vertically distributed hierarchical porous structures. Moreover, the coating imparts superhydrophobicity, high infrared emission, and thermo‐switchable sunlight reflectivity, enabling autonomous transitions between radiative cooling and solar warming. The all‐in‐one coating prevents contamination and over‐cooling caused by traditional radiative cooling materials, opening up new prospects for the large‐scale manufacturing of intelligent thermoregulatory coatings.This article is protected by copyright. All rights reserved

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“…45 In recent years, numerous stimulus-responsive intelligent PDRC systems have sparked signicant interest due to their versatile property. [46][47][48] It is well known that the dynamic dualmode thermal management based on radiative cooling and solar heating holds the potential to signicantly reduce the ever-increasing energy consumption. This has ignited a strong interest among researchers.…”

Section: Introductionmentioning

confidence: 99%