title: A Subambient Open Roof Surface under the Mid-Summer Sun.
abstract: A novel material open to warm airstays below ambient temperature under maximum solar intensities of mid-summer. It is found to be 11 °C cooler than a commercial white cool roof nearby. A combination of specially chosen polymers and a silver thin film yields values near 100% for both solar reflectance, and thermal emittance at infrared wavelengths from 7.9 to 13 μm.
authors.affiliation: School of Physics and Advanced Materials University of Technology Sydney PO Box 123 Broadway NSW 2007 Australia.
authors.forename: Angus R
authors.initials: AR
authors.lastname: Gentle
authors.affiliation: School of Physics and Advanced Materials University of Technology Sydney PO Box 123 Broadway NSW 2007 Australia.
authors.forename: Geoff B
authors.initials: GB
authors.lastname: Smith
keywords: albedo; cool roofs; polymer stacks; sky cooling; urban heat islands