TY - JOUR
T1 - Oil-paper-umbrella-inspired passive radiative cooling using recycled packaging foam
AU - Liu, Yang
AU - Liu, Xiaojie
AU - Chen, Fangqi
AU - Tian, Yanpei
AU - Caratenuto, Andrew
AU - Zheng, Yi
N1 - KAUST Repository Item: Exported on 2023-05-05
Acknowledgements: This project was supported by the National Science Foundation through grant number CBET-1941743 and PHY-1748958.
PY - 2023/3/28
Y1 - 2023/3/28
N2 - Passive daytime radiative cooling (PDRC) is a promising energy-saving cooling method to cool objects without energy consumption. Although numerous PDRC materials and structures have been proposed to achieve sub-ambient temperatures, the technique faces unprecedented challenges brought on by complicated and expensive fabrication. Herein, inspired by traditional Chinese oil-paper umbrellas, we develop a self-cleaning and self-cooling oil-foam composite (OFC) made of recycled polystyrene foam and tung oil to simultaneously achieve efficient passive radiative cooling and enhanced thermal dissipation of objects. The OFCs show high solar reflectance (0.90) and high mid-infrared thermal emittance (0.89) during the atmospheric transparent window, contributing to a sub-ambient temperature drop of ∼5.4 °C and cooling power of 86 W m−2 under direct solar irradiance. Additionally, the worldwide market of recycled packaging plastics can provide low-cost raw materials, further eliminating the release of plastics into the environment. The OFC offers an energy-efficient, cost-effective and environmentally friendly candidate for building cooling applications and provides a value-added path for plastic recycling.
AB - Passive daytime radiative cooling (PDRC) is a promising energy-saving cooling method to cool objects without energy consumption. Although numerous PDRC materials and structures have been proposed to achieve sub-ambient temperatures, the technique faces unprecedented challenges brought on by complicated and expensive fabrication. Herein, inspired by traditional Chinese oil-paper umbrellas, we develop a self-cleaning and self-cooling oil-foam composite (OFC) made of recycled polystyrene foam and tung oil to simultaneously achieve efficient passive radiative cooling and enhanced thermal dissipation of objects. The OFCs show high solar reflectance (0.90) and high mid-infrared thermal emittance (0.89) during the atmospheric transparent window, contributing to a sub-ambient temperature drop of ∼5.4 °C and cooling power of 86 W m−2 under direct solar irradiance. Additionally, the worldwide market of recycled packaging plastics can provide low-cost raw materials, further eliminating the release of plastics into the environment. The OFC offers an energy-efficient, cost-effective and environmentally friendly candidate for building cooling applications and provides a value-added path for plastic recycling.
UR - http://hdl.handle.net/10754/691435
UR - http://xlink.rsc.org/?DOI=D3TA00823A
UR - http://www.scopus.com/inward/record.url?scp=85153796583&partnerID=8YFLogxK
U2 - 10.1039/d3ta00823a
DO - 10.1039/d3ta00823a
M3 - Article
SN - 2050-7488
VL - 11
SP - 9152
EP - 9159
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 16
ER -