A Subambient Open Roof Surface under the Mid‐Summer Sun. Issue 9 (26th May 2015) - Gentle, Angus R.
Abstract A novel material open to warm air stays 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.