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.

Evaporative cooling without electricity. A wet bulb temperature is an indication of the amount of water vapor relative humidity in the air. 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. 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.

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 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. Evaporative cooling is limited by the current wet bulb temperature.

Here are three methods of alternative refrigeration you can use without electricity. The heat just flows explained fan who is senior author of the paper. For this reason the amount of heat flow off the earth that goes to the universe is enormous.