University of Technology Sydney — Gentle / Smith

Snapshot

Why it matters internationally

Gentle and Smith demonstrated sub-ambient daytime radiative cooling on real roofs before the field’s current boom, anchoring the Southern-Hemisphere presence of engineered emissivity and its building applications.

Scope of activity

• Quantities: spectrally selective surfaces · sub-ambient radiative cooling performance
• Spectral range: solar + 8–13 µm sky window
• Temperature: field demonstrations (roof scale)
• Methodology: Pioneering sub-ambient daytime radiative cooling roof demonstrations (coated polymer stack on silver absorbing ~3% solar while strongly emitting in the sky window); spectrally selective surfaces for buildings.

Application domains: cool roofs and buildings · spectrally selective surfaces.

External sources

• Geoff Smith (UTS profile)
• A Subambient Open Roof Surface under the Mid-Summer Sun (Adv. Sci., 2015)
• Sub-ambient daytime radiative cooling roof (Advanced Science / PMC)