Radiative Cooler

About

Summary: Stanford researchers at the Fan Group have designed and tested a highly efficient radiative cooler prototype with the following record-breaking performance results: Temperature drop of 42 degrees Celsius (and theoretical drop of 60 degrees C) which approaches the fundamental limit on cooling Daytime performance surpassed previous record by almost an order of magnitude Nighttime performance, carried out in a populous area at sea level, significantly exceed previous record carried out at a mountain-top desert This work demonstrates significant potential for radiative cooling, which can have practical impacts ranging from passive building cooling, renewable energy harvesting, and passive refrigeration in arid regions. 
   Applications: High-powered cooling for: Buildings Automobiles Freezers Passive refrigeration in arid regions Possible source of renewable energy (by means of harnessing heat flow towards space)   Advantages: Record breaking performance Can serve as a complement to existing cooling technology, e.g. air conditioning Highly Effective- Significantly exceeds previous maximum efficacy recorded for radiative cooling devices, approaching the fundamental limit for possible cooling Environmentally-friendly- Does not result in the emission of greenhouse gases Economical: Radiative cooling is entirely passive and does not consume power Uses thin film deposition that can be performed at large scales