Particle-Solid Transition Architecture for Efficient Passive Building Cooling

Yan, Xiantong1; Yang, Meng2; Duan, Wenhui3; Cui, Hongzhi1

2024-09-01

10.1021/acsnano.4c10659

ACS NANO   影响因子和分区

1936-0851

1936-086X

Electricity consumption for building cooling accounts for a significant portion of global energy usage and carbon emissions. To address this challenge, passive daytime radiative cooling (PDRC) has emerged as a promising technique for cooling buildings without electricity input. However, existing radiative coolers face material mismatch issues, particularly on cementitious composites like concrete, limiting their practical application. Here, we propose a cementitious radiative cooling armor based on a particle-solid transition architecture (PSTA) to overcome these challenges. The PSTA design features an asymmetric yet monolithic morphology and an all-inorganic nature, decoupling radiative cooling from building compatibility while ensuring UV resistance. In the PSTA design, nanoparticles on the surface serve as sunlight scatterers and thermal emitters, while those embedded within a cementitious substrate provide build compatibility and cohesiveness. This configuration results in enhanced interfacial bonding strength, high solar reflectance, and strong mid-infrared emittance. Specifically, the PSTA delivers an enhanced interfacial shear strength (0.93 MPa), several-fold higher than that in control groups (metal, glass, plastic) along with a cooling performance (a subambient temperature drop of similar to 6.6 degrees C and a cooling power of similar to 92.8 W under a direct solar irradiance of similar to 680 W/m(2)) that rivals or outperforms previous reports. Importantly, the design concept of the PSTA is applicable to various particles and solids, facilitating the practical application of PDRC technology in building scenarios.

particle-solid transition architecture subambientdaytime radiative cooling optical anisotropy buildingcompatibility interfacial compatibility energy-efficientbuildings

SCI

英语

其他

National Natural Science Foundation of China["51925804","52308270"] ; China Postdoctoral Science Foundation[2022M722189]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:001323731000001

AMER CHEMICAL SOC

Web of Science

1.Shenzhen Univ, Coll Civil & Transportat Engn, Key Lab Resilient Infrastructures Coastal Cities M, Shenzhen 518060, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
3.Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia

Yan, Xiantong,Yang, Meng,Duan, Wenhui,et al. Particle-Solid Transition Architecture for Efficient Passive Building Cooling[J]. ACS NANO,2024.

Yan, Xiantong,Yang, Meng,Duan, Wenhui,&Cui, Hongzhi.(2024).Particle-Solid Transition Architecture for Efficient Passive Building Cooling.ACS NANO.

Yan, Xiantong,et al."Particle-Solid Transition Architecture for Efficient Passive Building Cooling".ACS NANO (2024).