Challenges and Opportunities for Passive Thermoregulation

Advanced Energy Materials, Год журнала: 2024, Номер 14(34)

Опубликована: Июнь 26, 2024

Abstract The unsustainable nature of energy‐intensive and environmentally unfriendly traditional air conditioning systems, compacted with recent climate change effects, show an urgent need for more sustainable efficient thermoregulation solutions. Innovations in passive daytime radiative coolers (PDRCs) selective solar absorbers (SSAs), which utilize natural resources, the “cold” outer space “hot” sun from sky, offer friendly cost‐effective alternative. However, various factors significantly impede commercial viability these technologies, such as lack emphasis on advancements practical application, challenge reversible functionality between PDRCs SSAs, inconsistent performance evaluation, absence effective mass production strategies. Here current challenges future development trends PDRC SSA‐aided innovation are discussed. Specifically, opportunities relating to application conditions, evaluation parameter standardization, strategies considered large‐scale production, all critical realizing full potential SSAs.

Язык: Английский

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Recent advances in water collection based on solar evaporation

Green Energy & Environment, Год журнала: 2024, Номер 9(12), С. 1812 - 1821

Опубликована: Май 20, 2024

Solar evaporation attracted lots of attention due to its environment-friendly and high efficiency, which is a potential approach collecting fresh water. Many efforts have been made improve the rate in open space. While actual water collection far less than rate, especially passive collection, limiting practical scalable applications. In this review, we focus on freshwater based solar evaporation. Firstly, heat mass transfer behaviors side were summarized performance, including processes thermal radiation, convection, conduction; supply, enthalpy, salt rejection. Sequentially, subcooling, wettability, geometry condensation discussed should be designed collaboratively with confined Finally, recovery electricity generation beyond also introduced, some challenges still need further for applications, integrated system, long-term issues.

Язык: Английский

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Radiative cooling coupled with latent heat storage for dynamic thermal management

Solar Energy Materials and Solar Cells, Год журнала: 2024, Номер 278, С. 113173 - 113173

Опубликована: Сен. 17, 2024

Язык: Английский

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Bioinspired all-day adaptive radiative cooler with high-power cooling and efficient suppressing overcooling

Building and Environment, Год журнала: 2024, Номер 266, С. 112119 - 112119

Опубликована: Сен. 24, 2024

Язык: Английский

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Adhesive Hydrogel Paint for Passive Heat Dissipation via Radiative Coupled Evaporation Cooling

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 10, 2025

Passive cooling technologies have shown great interest recently due to their free electricity, especially for radiative (RC), and evaporation (EC). While single-mode passive is often limited by environmental conditions, such as sunlight, clouds, humidity, resulting in a performance. To address these issues, an adhesive hydrogel paint designed heat dissipation the daytime or high workload via coupled (REC), which also can realize water self-replenishment at night low RC-assisted adsorption moisture capture. Solar reflectance R¯solar${{\bar{R}}_{{\mathrm{solar}}}}$ = 0.91 thermal emittance ε¯LWIR${{\bar{\varepsilon }}_{{\mathrm{LWIR}}}}$ 0.94 are obtained RC. Excellent performance be achieved painting it on 3D W-shaped substrate. Compared with flat RC paint, REC W-shape substrate achieves temperature drop of 5.4 °C heating density 100 W m-2, further increased 11.4 400 m-2 multi-passive strategies. This structural material design provides potential outdoor dissipation.

Язык: Английский

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Anisotropic Hygroscopic Hydrogels with Synergistic Insulation-Radiation-Evaporation for High-Power and Self-Sustained Passive Daytime Cooling

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Апрель 29, 2025

Abstract Hygroscopic hydrogel is a promising evaporative-cooling material for high-power passive daytime cooling with water self-regeneration. However, undesired solar and environmental heating makes it challenge to maintain sub-ambient cooling. While different strategies have been developed mitigate heat gains, they inevitably sacrifice the evaporation regeneration due highly coupled thermal vapor transport. Here, an anisotropic synergistically performed insulation-radiation-evaporation (ASPIRE) cooler by leveraging dual-alignment structure both internal external coordinated The ASPIRE achieves impressive average temperature of ~ 8.2 °C remarkable peak power 311 W m −2 under direct sunlight. Further examining mechanism reveals that reduces gains without comprising evaporation. Moreover, self-sustained multi-day possible self-regeneration at night clear cloudy days. synergistic design provides new insights toward high-power, sustainable, all-weather applications.

Язык: Английский

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Theoretical Model and Application Potential of Hybrid Passive Cooling for Power Yield Improvement of Thermoelectric Generators

Energy, Год журнала: 2025, Номер 327, С. 136367 - 136367

Опубликована: Май 4, 2025

Язык: Английский

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Guidance for combining radiative cooling and evaporative cooling: A heat and mass transfer analysis

Energy Conversion and Management, Год журнала: 2024, Номер 325, С. 119385 - 119385

Опубликована: Дек. 11, 2024

Язык: Английский

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Capillary container array structures for efficient, energy-saving, and sustainable evaporative cooling and humidification

Energy, Год журнала: 2024, Номер 309, С. 133159 - 133159

Опубликована: Сен. 18, 2024

Язык: Английский

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Facile Fabrication of a Porous PDMS Film for Passive Daytime Radiative Cooling via the Dual Template Method

Materials Today Communications, Год журнала: 2024, Номер unknown, С. 111376 - 111376

Опубликована: Дек. 1, 2024

Язык: Английский

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