I D
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical EngineeringChementator Briefs
Biomethane Last month, NextChem, a subsidiary of Maire Tecnimont S.p.A.…
BUSINESS NEWSTECHNICAL & PRACTICALTOWER DOCTORFEATURE REPORTFACTS AT YOUR FINGERTIPSENGINEERING PRACTICEENVIRONMENTAL MANAGEREQUIPMENT & SERVICESFOCUSSHOW PREVIEWSDEPARTMENTSCHEM CHRONICLES

Comment uncategorized

Radiative cooling: A coating for windows that also cools

By Paul Grad |

A Korean team has proposed an approach for passive radiative cooling. The team, which includes professors Junsuk Rho and Jin Kon Kim of Pohang Universiy of Science and Technology (Pohang, South Korea; www.postech.ac.kr) and professor Heon Lee of Korea University (Seoul, South Korea; www.korea.ac.kr), says its work demonstrates that a simple and low-cost single membrane can be used to produce efficient daytime radiative cooling, whereas many previous methods have required the precise design of multilayers and patterns. “We believe our approach is suitable for the mass production of a low-cost radiative cooler which would help reduce global energy consumption,” the researchers say. The researchers used porous anodic-aluminum-oxide (AAO) coated with thin layers of SiO2. The AAO shows near perfect spectral emissivity in the atmospheric window in the mid-infrared spectrum (8–13µm). According to the team, conventional AAO has a large extinction coefficient over 10µm, and by itself does not produce the required near perfect spectral emissivity band over the entire atmospheric window. The SiO2-coated AAO membrane shows an average cooling flux of 65.6 W/m2 during the daytime, and a maximum cooling of 6.1°C below ambient temperature…
Related Content

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
GMP In The Cosmetic Industry
Solve turbomachinery problems: Miba Tilting Pad Bearings
Six Steps to Designing a Storage Vessel That Really Works
SICK Solutions for Cleaner Industries - Powerful Transitions
Gain a Digital Line of Sight Across the Whole Lifecycle of the Plant with a Digital Twin

View More