Significantly enhanced sub-ambient passive cooling enabled by evaporation, radiation, and insulation

@article{Lu2022SignificantlyES,  title={Significantly enhanced sub-ambient passive cooling enabled by evaporation, radiation, and insulation},  author={Zhengmao Lu and Arny Leroy and Lenan Zhang and Jatin J. Patil and Evelyn N. Wang and Jeffrey C. Grossman},  journal={Cell Reports Physical Science},  year={2022},  url={https://api.semanticscholar.org/CorpusID:252411940}}

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38 References

High-performance subambient radiative cooling enabled by optically selective and thermally insulating polyethylene aerogel

Polyethylene aerogel (PEA) is developed—a solar-reflecting, thermally insulating, and low-thermal-conductivity material that can be integrated with existing emitters to address the challenges of passive radiative cooling under direct sunlight.

Passive radiative cooling below ambient air temperature under direct sunlight

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.

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The basic principles of radiative cooling and its performance characteristics for nonradiative contributions, solar radiation, and atmospheric conditions are discussed and the recent advancements over the traditional approaches and their material and structural characteristics are outlined.

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Cooling systems consume 15% of electricity generated globally and account for 10% of global greenhouse gas emissions. With demand for cooling expected to grow tenfold by 2050, improving the…

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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.

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