asteroza + ir + rejection   6

SkyCool Systems: The future of cooling
Rejecting heat through atmospheric IR windows to space from the ground. Potentially cooling to sub-ambient!
atmospheric  IR  window  heat  rejection  cooling  HVAC 
september 2017 by asteroza
Radiative cooling to deep sub-freezing temperatures through a 24-h day–night cyc...
New record, but requires shading from direct sunlight, and a vacuum chamber, and a zinc selenide emission window on the vacuum chamber wall. But 37 degrees below atmospheric ambient is pretty damn good.
atmospheric  IR  window  heat  rejection  vacuum  chamber  zinc  selenide  cooling  Delicious 
december 2016 by asteroza
A Subambient Open Roof Surface under the Mid-Summer Sun - Gentle - 2015 - Advanced Science - Wiley Online Library
Interesting new surface coating that absorbs little heat, rejects what does get absorbed in IR, resulting in a roof cooler than ambient.
composite  polymer  silver  stack  surface  coating  materials  science  research  technology  cooling  IR  heat  rejection  Delicious 
june 2015 by asteroza

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