Evaporative Cooling Without Electricity

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.

Evaporative cooling without electricity.

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. Methods of alternative refrigeration passive cooling. 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.

The specialized optical surfaces they developed are a major step toward applying this. Scientists cooled water without electricity by sending excess heat where it won t be noticed space. The heat just flows explained fan who is senior author of the paper. The system cools water flowing through pipes connected to an air conditioning system without requiring electricity by radiating excess heat from water into cold 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. For this reason the amount of heat flow off the earth that goes to the universe is enormous. Evaporative cooling is limited by the current wet bulb temperature.