Passive Daytime Cooling Foils for Everyone : A Scalable Lamination Process Based on Upcycling Aluminum-Coated Chips Bags

Titelangaben

Song, Qimeng ; Retsch, Markus:
Passive Daytime Cooling Foils for Everyone : A Scalable Lamination Process Based on Upcycling Aluminum-Coated Chips Bags.
In: ACS Sustainable Chemistry & Engineering. Bd. 11 (2023) Heft 29 . - S. 10631-10639.
ISSN 2168-0485
DOI: https://doi.org/10.1021/acssuschemeng.3c00683

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Abstract

The increasing energy demand for space cooling and environmental pollution caused by post-consumer plastic waste are two of the most challenging issues today. Passive daytime cooling, which dissipates heat to outer space without external energy input, has emerged recently as a sustainable technique for space cooling. In this work, a plastic waste-based passive daytime cooling foil is reported to alleviate both issues simultaneously. The mirror-like aluminum-plastic laminate (APL) waste exhibits a satisfactory solar reflectance of 85.7%. Combining the APL waste with a laminated pouch foil reveals a remarkably simple but effective plastic waste-based cooling foil with a high emissivity of 0.87 in the atmospheric window, resulting in a compelling daytime cooling performance. The sustainable aluminum-plastic laminate waste-based cooling foil is flexible, easily scalable, low-cost, and fabricated with a common laminator. This makes the fabrication of passive cooling materials possible even for nonexperts, which will help to provide advanced sun shelters and comfortable temperatures to a wider community.