Relying on evaporation and radiation — but not electricity — the MIT passive cooling system could keep food fresh longer or supplement air conditioning in buildings. System combines radiative cooling, evaporative cooling and thermal insulation in a slim package that could resemble existing solar panels. It can provide up to about 19 degrees Fahrenheit (9.3 degrees Celsius) of cooling from the ambient temperature. This is enough to permit safe food storage for about 40 percent longer under very humid conditions. Under dryer conditions, it could triple the safe storage time.Read Long Article
