Cooling potential and applications prospects of passive radiative cooling in buildings: The current state-of-the-art

Lu, Xing; Xu, Peng; Wang, Huilong; Yang, Tao; Hou, Jin

doi:10.1016/j.rser.2016.07.058

Cited by 243 publications

(91 citation statements)

References 110 publications

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“…partial pressure of water vapour (mbar). 4,5,6,9,10,11,12,25,26,29,30,31,32,33,40,41,42,44,45 e in [5, [9][10][11][12]29,38,42,43], in [39] , and parameters to compare radiative cooling selective materials (see collector efficiency factor (-)(see [115]) 52 F' in [115] H relative humidity (%), 14 spectral radiance of a blackbody ( ) 49, 50 W in [45] k empirical coefficient depending on the cloud type, to be defined in the original paper (-)…”

Section: Discussionmentioning

confidence: 99%

“…These dynamic properties of earth's atmosphere make the atmosphere an interesting heat sink to eliminate heat excess. As the atmosphere does not act like a blackbody emitter, it is difficult to predict its behaviour although the physical phenomenon can be physically described as it was presented in [4]. Therefore, for engineering purposes, it would be interesting to measure and/or predict the incoming infrared radiation from the atmosphere on a surface facing the sky.…”

Section: Infrared Atmospheric Radiationmentioning

confidence: 99%

“…As the effect produced by the variation of the view factor is easier to estimate than the effect of being exposed to "warmer" zones of the sky, research was mainly focused on finding simple expressions of the effect of having the radiator surface exposed to "warmer" regions of the sky, rather than the analytical expression of the phenomenon as presented in [4].…”

Section: Influence Of the Zenith Angle / Tilted Surfaces / Sky View Fmentioning

confidence: 99%

“…However, in the present all the information is scattered in the literature, making it difficult to identify new research opportunities. Although Lu et al developed a practical review of radiative cooling [4], they focused in passive radiative cooling in buildings, and they did not include detailed information about the phenomenon and the studied materials for radiative cooling as well as the radiative cooling devices and models. Therefore, there is a clear need to compile and structure all this information.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Radiative cooling as low-grade energy source: A literature review

Vall

Castell

2017

Renewable and Sustainable Energy Reviews

168

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Section: Discussionmentioning

confidence: 99%

Section: Infrared Atmospheric Radiationmentioning

confidence: 99%

Section: Influence Of the Zenith Angle / Tilted Surfaces / Sky View Fmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Radiative cooling as low-grade energy source: A literature review

Vall

Castell

2017

Renewable and Sustainable Energy Reviews

168

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show abstract

“…These pioneering works demonstrated the potential to realize daytime radiative cooling with no electricity consumption [15][16][17][18][19][20] . This technology can be used to assist climate control in buildings and significantly reduce energy usage [21][22][23][24][25][26][27] . Therefore, enhanced radiative cooling technology represents a new research topic with a significant impact on the energy sustainability .…”

mentioning

confidence: 99%

A polydimethylsiloxane-coated metal structure for all-day radiative cooling

et al. 2019

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Radiative cooling is a passive cooling strategy with zero consumption of electricity, and it can be used to radiate heat from buildings to reduce air conditioning requirements. Although this technology can work well during optimal atmospheric conditions at nighttime, it is essential to achieve efficient cooling during daytime when peak cooling demand actually occurs. In this article, we report an inexpensive planar polydimethylsiloxane (PDMS)/metal thermal emitter, i.e., a thin film structure, which was fabricated using a fast solution coating process that is scalable for large area manufacturing. By performing tests under different environmental conditions, temperature reductions of 9.5 °C and 11.0 °C were demonstrated in the laboratory and outdoor environment, respectively, with an average cooling power of ~120 W/m 2 for the thin film thermal emitter. In addition, a spectral-selective structure was designed and implemented to suppress the solar input and control the divergence of the thermal emission beam. This enhanced the directionality of the thermal emissions, so the emitter's cooling performance was less dependent on the surrounding environment. Outdoor experiments were performed in Buffalo NY realizing continuous allday cooling of 2~9 °C on a typical clear sunny day at Northern United States latitudes. This practical strategy that cools without electricity input could have a significant impact on global energy consumption.

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Continuous Sandwiched Film Containing Oriented ZnO@HDPE Microfiber for Passive Radiative Cooling

Peng,

Ren,

Zheng

et al. 2024

Adv Funct Materials

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Recently, passive radiative cooling (PRC) that realizes thermal management without consuming any energy has attracted increasing attention. However, few studies focus on low‐cost and robust PRC film fabricated by a facile and environmentally friendly method. In this study, via coextrusion blow film molding and water leaching, sandwiched PRC film (SPRCF) is efficiently prepared, and its skin and core layer are respectively high‐density polyethylene (HDPE) film and oriented ZnO@HDPE microfiber layer. Of note, such a sandwiched structure enables SPRCF to possess remarkable mechanical properties, abrasion, and weather resistance. Moreover, with the introduction of ZnO, SPRCF shows lower sunlight transmittance (≈3.8%) but higher mid‐infrared transmittance (≈88.8%), endowing it with remarkable PRC performance (the maximum cooling power of daytime and nighttime are respectively 73.8 and 96.7 W m−2). Furthermore, the decent self‐cleaning performance of SPRCF‐45 endows it with maintenance‐free features outdoors. This work proposes a facile and environmentally friendly method for preparing low‐cost and robust SPRCF, opening a new pathway to develop PRC film following the concept of polymer “structuring” processing.

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Cooling potential and applications prospects of passive radiative cooling in buildings: The current state-of-the-art

Cited by 243 publications

References 110 publications

Radiative cooling as low-grade energy source: A literature review

Radiative cooling as low-grade energy source: A literature review

A polydimethylsiloxane-coated metal structure for all-day radiative cooling

Continuous Sandwiched Film Containing Oriented ZnO@HDPE Microfiber for Passive Radiative Cooling

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