All-day continuous electrical power generator by solar heating and radiative cooling from the sky

Yu, Li; Xi, Zhiyuan; Li, Shuang; Pang, Dan; Yan, Hongjie; Chen, Meijie

doi:10.1016/j.apenergy.2022.119403

Cited by 37 publications

(13 citation statements)

References 39 publications

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Section: Self‐uninterrupted Electricity Power Systemmentioning

confidence: 99%

“…In this case, the thermal energy in the system flows completely from bottom to top, minimizing the amount of heat escaping from the side. As shown in Figure 6j, [ 103 ] a mirror was used to make solar absorber face the sky in an indirect manner; thus, achieving more effective solar energy collection and transfer. In addition, the reflective concentrator can increase the solar energy captured by the solar absorber while reflecting sunlight.…”

Section: Self‐uninterrupted Electricity Power Systemmentioning

confidence: 99%

“…The photothermal conversion performance of the solar absorber and the cooling performance of the radiative cooler have approached the theoretical limit, and the manufacturing technology of thermoelectric materials and devices has also made exciting progress. [102][103][104][105][106] The combination of sky-facing radiative cooler and solar absorber with thermoelectric generator is a new energy device that is easy to implement but has greater parasitic heat loss. The non-planar thermoelectric device integrated with solar heating and radiative cooling can be coupled with a variety of functional devices and environmental heat sources to improve its output performance and enrich its application scenarios, but it has a more complex manufacturing process and needs to consider the path of solar radiation and thermal radiation to reduce the shielding effect.…”

Section: Summary and Comparisonmentioning

confidence: 99%

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An Emerging Energy Technology: Self‐Uninterrupted Electricity Power Harvesting from the Sun and Cold Space

Zhang

Liu

et al. 2023

Advanced Energy Materials

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Harvesting sustainable energy from the sun and cold space to uninterruptedly generate green electricity provides a potential alternative way to solve the unfolding energy crisis and environmental issues. This emerging energy technology is seeing important progress and further advances remain challenging. Herein, the underlying principle, thermodynamic limit, and global potential of this technology are comprehensively reviewed. The recent advances of energy harvesters (solar absorbers or/and radiative coolers) integrated with energy converters (thermoelectric generators) are summarized, and strategies including thermal/optical/radiative cooling concentration, thermal dissipation, and geometric optimization are discussed. Last, the great prospects for uninterrupted energy harvest and electricity generation in extensive fields are outlined, and the scientific and engineering challenges for upcoming growth are proposed.

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Section: Self‐uninterrupted Electricity Power Systemmentioning

confidence: 99%

Section: Self‐uninterrupted Electricity Power Systemmentioning

confidence: 99%

Section: Summary and Comparisonmentioning

confidence: 99%

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An Emerging Energy Technology: Self‐Uninterrupted Electricity Power Harvesting from the Sun and Cold Space

Zhang

Liu

et al. 2023

Advanced Energy Materials

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“…Improving upon the setup design, Assawaworrarit et al (2022) demonstrated a power density of 50 mW/m 2 , using a solar cell as the radiative emitter. Radiative-cooling-based nighttime power generation has also been explored by a number of other experiments (Ono et al, 2019;Zhao et al, 2020;Zhao et al, 2021;Yu et al, 2022;Ishii et al, 2020;Deppe and Munday, 2020;Khan et al, 2021;Liao et al, 2022).…”

Section: Open Accessmentioning

confidence: 99%

Radiative-cooling-based nighttime electricity generation with power density exceeding 100 mW/m2

Omair

Assawaworrarit

et al. 2022

iScience

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“…9,10 This revolutionary technology is widely used in building cooling, 11,12 personal thermal management, 13,14 renewable energy harvesting, 15,16 and passive refrigeration. 17,18 Existing PDRC technology also cools objects during cold winters, resulting in a significant increase in heating energy consumption. 19,20 Therefore, there is an urgent demand to develop an advanced PDRC technology aiming to realize "warm in winter and cool in summer".…”

mentioning

confidence: 99%

“Warm in Winter and Cool in Summer”: Scalable Biochameleon Inspired Temperature-Adaptive Coating with Easy Preparation and Construction

Dong,

Meng,

Wang

et al. 2023

Nano Lett.

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The highly reflective solar radiation of passive daytime radiative cooling (PDRC) increases heating energy consumption in the cold winter. Inspired by the temperature-adaptive skin color of chameleon, we efficiently combine temperature-adaptive solar absorption and PDRC technology to achieve “warm in winter and cool in summer”. The temperature-adaptive radiative cooling coating (TARCC) with color variability is designed and fabricated, achieving 41% visible light regulation capability. Comprehensive seasonal outdoor tests confirm the reliability of the TARCC: in summer, the TARCC exhibits high solar reflectance (∼93%) and atmospheric transmission window emittance (∼94%), resulting in a 6.5 K subambient temperature. In the winter, the TARCC’s dark color strongly absorbs solar radiation, resulting in a 4.3 K temperature rise. Compared with PDRC coatings, the TARCC can save up to 20% of annual energy in midlatitude regions and increase suitable human hours by 55%. With its low cost, easy preparation, and simple construction, the TARCC shows promise for achieving sustainable and comfortable indoor environments.

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All-day continuous electrical power generator by solar heating and radiative cooling from the sky

Cited by 37 publications

References 39 publications

An Emerging Energy Technology: Self‐Uninterrupted Electricity Power Harvesting from the Sun and Cold Space

An Emerging Energy Technology: Self‐Uninterrupted Electricity Power Harvesting from the Sun and Cold Space

Radiative-cooling-based nighttime electricity generation with power density exceeding 100 mW/m2

“Warm in Winter and Cool in Summer”: Scalable Biochameleon Inspired Temperature-Adaptive Coating with Easy Preparation and Construction

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