Research on indirect cooling for photovoltaic panels based on radiative cooling

Li, Shuai; Zhou, Zhi‐Hua; Liu, Junwei; Ji, Zhiming; Tang, Huajie; Zhang, Zhuofen; Na, Yanling; Jiang, Chongxu

doi:10.1016/j.renene.2022.08.020

Cited by 19 publications

(2 citation statements)

References 33 publications

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“…On the other hand, the indirect combination between photovoltaic panels and radiative coolers may provide great cooling benefits in terms of enhancing power generation and the working lifetime of photovoltaic systems. [12,147]…”

Section: Radiative Coolingmentioning

confidence: 99%

Passive Photovoltaic Cooling: Advances Toward Low‐Temperature Operation

Liu,

Zhou,

Zhou

et al. 2023

Advanced Energy Materials

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With the great increase in installation, photovoltaics will develop as the main power supply source for the world shortly. However, the actual power generation and lifetime of photovoltaics are greatly compromised by the high working temperature under outdoor operation. In this review, the recent advances of four promising passive photovoltaic cooling methods are summarized with the aim to uncover their working principles, cooling performance, and application potential in photovoltaic devices. For radiative cooling, light management strategies with ultraviolet‐photon downshift and sub‐bandgap reflection are discussed in detail to reveal their great potential in reducing photovoltaic working temperature and enhancing power generation. Subsequently, the great cooling benefits of passive evaporative cooling are underlined in terms of its superior cooling power and temperature drop of photovoltaic devices. Moreover, the promising integrated cooling strategy is further highlighted due to its great potential in enhancing electricity production and fresh water supply. Most crucially, the remaining challenges and the authors'r insights are presented to advance the commercial applications of passive cooling methods in photovoltaics.

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Section: Radiative Coolingmentioning

confidence: 99%

Passive Photovoltaic Cooling: Advances Toward Low‐Temperature Operation

Liu,

Zhou,

Zhou

et al. 2023

Advanced Energy Materials

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“…However, thanks to advances in photonics and micro/nano-fabrication technologies, we have witnessed the emergence of highly e cient radiative coolers very recently with hundreds of innovative designs, including multilayer coatings [2][3][4][5] , hierarchically polymers 6-14 , micro bres 15 , and ultra-white paints 16 . On the level of application, radiative cooling has enormous potential for cooling 17 and thermal management in various backgrounds, such as cool roofs and envolops 18 , photovoltaics cooling 19,20 , water harvesting 21,22 , and personal thermal management 15,23,24 .…”

Section: Introductionmentioning

confidence: 99%

A novel black-gray body atmospheric radiation model for accurate long-term radiative cooling performance simulation and analysis

Pei,

Li,

et al. 2024

Preprint

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Passive radiative cooling spontaneously emits thermal radiation into the cold universe, providing an environment-friendly solution for cooling. Unlike the mature methods for annual performance evaluation of solar energy harvesting, appropriate long-term radiative cooling performance simulation methods that can be used across different cities in the world are still missing. The main reason is that the spectral distribution of atmospheric radiation varies sensitively with sky status (e.g., cloudy, humid, etc.), while the normalized solar radiation spectrum is relatively stable regardless of weather conditions. Currently reported atmospheric radiation models in radiative cooling field, including the effective sky emissivity model and Modtran model, cannot simultaneously meet the spectral, spatial, and temporal requirements. Herein, we propose an accurate long-term radiative cooling simulation method by developing a novel black-gray (BG) body atmospheric radiation model based on the atmospheric spectral properties and the measured atmospheric radiative power. Experimental validation has been performed in cities with different climate styles and results show superior accuracy than reported methods. The proposed radiative cooling simulation method is well-suited for diverse environmental conditions, encompassing different weather conditions, climate styles, and seasons. It is also applicable for both spectral broadband and selective coolers, particularly for recently proposed selective coolers. To further apply the proposed method, we propose a concept of atmospheric spectral energy databases for the first time and provide a demo case study in Hefei, China, which aims to guide the accurate long-term radiative cooling simulation analysis.

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Alumina Fiber Membrane Prepared by Electrospinning Technology for Passive Daytime Radiative Cooling

Xin,

Wang,

et al. 2024

Adv Funct Materials

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Passive daytime radiative cooling (PDRC) achieves cooling by simultaneously reflecting sunlight and radiating heat to outer space, without consuming any external energy. Traditional PDRC designs use organic materials that are prone to aging and secondary pollution under solar illumination. Here, a flexible alumina fiber membrane (FAFM) is prepared using electrospinning technology. The fiber‐membrane hierarchical structure ensures macroscopic flexibility, allowing this inorganic material to be assembled on complex surfaces just like organic materials. It can efficiently dissipate heat by emitting infrared radiation that matches the atmospheric window and scattering sunlight. Importantly, it is notable that no aging phenomenon occurs even under prolonged ultraviolet irradiation, which brings additional benefits to its green energy‐saving properties. As a result, its outstanding fire resistance and thermal insulation prevent the possibility of spontaneous combustion in extremely hot weather during the summer and may serve as a multifunctional insulation layer for buildings. This preparation method promotes surface design based on more inorganic structural materials in the future, enabling the design of more low‐cost, highly flexible inorganic PDRC materials.

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Research on indirect cooling for photovoltaic panels based on radiative cooling

Cited by 19 publications

References 33 publications

Passive Photovoltaic Cooling: Advances Toward Low‐Temperature Operation

Passive Photovoltaic Cooling: Advances Toward Low‐Temperature Operation

A novel black-gray body atmospheric radiation model for accurate long-term radiative cooling performance simulation and analysis

Alumina Fiber Membrane Prepared by Electrospinning Technology for Passive Daytime Radiative Cooling

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