Evaporative Cooling Without Electricity

Evaporative cooling is limited by the current wet bulb temperature.

Evaporative cooling without electricity. The heat just flows explained fan who is senior author of the paper. Scientists cooled water without electricity by sending excess heat where it won t be noticed space. No matter how much liquid evaporates or how fast it evaporates the minimum temperature that can be reached by direct evaporation is the wet bulb temperature. Several hot and dry regions throughout the world could potentially benefit from evaporative cooling including north africa the sahel region of africa the horn of africa southern africa the middle east arid regions of south asia and australia.

Simple evaporative cooling devices such as evaporative cooling chambers eccs and clay pot coolers or pot in pot refrigerators are simple and inexpensive ways to keep vegetables fresh without the use of electricity. If you have something that is very cold like space and you can dissipate heat into it then you can do cooling without any electricity or work. A wet bulb temperature is an indication of the amount of water vapor relative humidity in the air. Methods of alternative refrigeration passive cooling.

The specialized optical surfaces they developed are a major step toward applying this. A cheap pvc shelf unit from you local hardware store works well. Panels covered in specialized optical surfaces reflect about 97 percent of the sunlight while simultaneously emitting the surface s thermal energy through the atmosphere.