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Ultrahigh Passive Cooling Power in Hydrogel with Rationally Designed Optofluidic Properties.
Fei, Jipeng; Han, Di; Zhang, Xuan; Li, Ke; Lavielle, Nicolas; Zhou, Kai; Wang, Xingli; Tan, Jun Yan; Zhong, Jianwei; Wan, Man Pun; Nefzaoui, Elyes; Bourouina, Tarik; Li, Shuzhou; Ng, Bing Feng; Cai, Lili; Li, Hong.
Afiliación
  • Fei J; School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore.
  • Han D; School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore.
  • Zhang X; Department of Energy and Power Engineering, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China.
  • Li K; Institute of Materials Research and Engineering, Agency for Science, Technology and Research, Singapore, 138634, Singapore.
  • Lavielle N; School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
  • Zhou K; Univ Gustave Eiffel, CNRS, ESYCOM, Marne la Vallée F77454, France.
  • Wang X; Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.
  • Tan JY; CINTRA CNRS/NTU/THALES, IRL 3288, Research Techno Plaza, Singapore 637553, Singapore.
  • Zhong J; School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore.
  • Wan MP; Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore.
  • Nefzaoui E; School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore.
  • Bourouina T; Univ Gustave Eiffel, CNRS, ESYCOM, Marne la Vallée F77454, France.
  • Li S; Univ Gustave Eiffel, CNRS, ESYCOM, Marne la Vallée F77454, France.
  • Ng BF; CINTRA CNRS/NTU/THALES, IRL 3288, Research Techno Plaza, Singapore 637553, Singapore.
  • Cai L; School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
  • Li H; School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore.
Nano Lett ; 24(2): 623-631, 2024 Jan 17.
Article en En | MEDLINE | ID: mdl-38048272
The cooling power of a radiative cooler is more than halved in the tropics, e.g., Singapore, because of its harsh weather conditions including high humidity (84% on average), strong downward atmospheric radiation (∼40% higher than elsewhere), abundant rainfall, and intense solar radiation (up to 1200 W/m2 with ∼58% higher UV irradiation). So far, there has been no report of daytime radiative cooling that well achieves effective subambient cooling. Herein, through integrated passive cooling strategies in a hydrogel with desirable optofluidic properties, we demonstrate stable subambient (4-8 °C) cooling even under the strongest solar radiation in Singapore. The integrated passive cooler achieves an ultrahigh cooling power of ∼350 W/m2, 6-10 times higher than a radiative cooler in a tropical climate. An in situ study of radiative cooling with various hydration levels and ambient humidity is conducted to understand the interaction between radiation and evaporative cooling. This work provides insights for the design of an integrated cooler for various climates.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2024 Tipo del documento: Article País de afiliación: Singapur Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2024 Tipo del documento: Article País de afiliación: Singapur Pais de publicación: Estados Unidos